зеркало из https://github.com/mozilla/gecko-dev.git
4042 строки
104 KiB
C++
4042 строки
104 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CacheLog.h"
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#include "CacheFileIOManager.h"
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#include "../cache/nsCacheUtils.h"
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#include "CacheHashUtils.h"
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#include "CacheStorageService.h"
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#include "CacheIndex.h"
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#include "CacheFileUtils.h"
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#include "nsThreadUtils.h"
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#include "CacheFile.h"
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#include "CacheObserver.h"
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#include "nsIFile.h"
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#include "CacheFileContextEvictor.h"
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#include "nsITimer.h"
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#include "nsISimpleEnumerator.h"
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#include "nsIDirectoryEnumerator.h"
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#include "nsIObserverService.h"
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#include "nsICacheStorageVisitor.h"
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#include "nsISizeOf.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/Services.h"
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#include "nsDirectoryServiceUtils.h"
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#include "nsAppDirectoryServiceDefs.h"
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#include "private/pprio.h"
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#include "mozilla/VisualEventTracer.h"
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#include "mozilla/Preferences.h"
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#include "nsNetUtil.h"
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// include files for ftruncate (or equivalent)
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#if defined(XP_UNIX)
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#include <unistd.h>
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#elif defined(XP_WIN)
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#include <windows.h>
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#undef CreateFile
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#undef CREATE_NEW
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#else
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// XXX add necessary include file for ftruncate (or equivalent)
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#endif
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namespace mozilla {
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namespace net {
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#define kOpenHandlesLimit 64
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#define kMetadataWriteDelay 5000
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#define kRemoveTrashStartDelay 60000 // in milliseconds
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#define kSmartSizeUpdateInterval 60000 // in milliseconds
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#ifdef ANDROID
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const uint32_t kMaxCacheSizeKB = 200*1024; // 200 MB
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#else
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const uint32_t kMaxCacheSizeKB = 350*1024; // 350 MB
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#endif
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bool
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CacheFileHandle::DispatchRelease()
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{
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if (CacheFileIOManager::IsOnIOThreadOrCeased()) {
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return false;
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}
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nsCOMPtr<nsIEventTarget> ioTarget = CacheFileIOManager::IOTarget();
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if (!ioTarget) {
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return false;
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}
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nsRefPtr<nsRunnableMethod<CacheFileHandle, MozExternalRefCountType, false> > event =
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NS_NewNonOwningRunnableMethod(this, &CacheFileHandle::Release);
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nsresult rv = ioTarget->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
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if (NS_FAILED(rv)) {
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return false;
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}
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return true;
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}
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NS_IMPL_ADDREF(CacheFileHandle)
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NS_IMETHODIMP_(MozExternalRefCountType)
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CacheFileHandle::Release()
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{
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nsrefcnt count = mRefCnt - 1;
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if (DispatchRelease()) {
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// Redispatched to the IO thread.
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return count;
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}
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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LOG(("CacheFileHandle::Release() [this=%p, refcnt=%d]", this, mRefCnt.get()));
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NS_PRECONDITION(0 != mRefCnt, "dup release");
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count = --mRefCnt;
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NS_LOG_RELEASE(this, count, "CacheFileHandle");
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if (0 == count) {
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mRefCnt = 1;
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delete (this);
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return 0;
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}
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return count;
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}
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NS_INTERFACE_MAP_BEGIN(CacheFileHandle)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END_THREADSAFE
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CacheFileHandle::CacheFileHandle(const SHA1Sum::Hash *aHash, bool aPriority)
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: mHash(aHash)
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, mIsDoomed(false)
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, mPriority(aPriority)
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, mClosed(false)
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, mSpecialFile(false)
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, mInvalid(false)
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, mFileExists(false)
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, mFileSize(-1)
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, mFD(nullptr)
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{
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LOG(("CacheFileHandle::CacheFileHandle() [this=%p, hash=%08x%08x%08x%08x%08x]"
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, this, LOGSHA1(aHash)));
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}
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CacheFileHandle::CacheFileHandle(const nsACString &aKey, bool aPriority)
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: mHash(nullptr)
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, mIsDoomed(false)
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, mPriority(aPriority)
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, mClosed(false)
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, mSpecialFile(true)
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, mInvalid(false)
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, mFileExists(false)
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, mFileSize(-1)
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, mFD(nullptr)
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, mKey(aKey)
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{
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LOG(("CacheFileHandle::CacheFileHandle() [this=%p, key=%s]", this,
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PromiseFlatCString(aKey).get()));
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}
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CacheFileHandle::~CacheFileHandle()
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{
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LOG(("CacheFileHandle::~CacheFileHandle() [this=%p]", this));
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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nsRefPtr<CacheFileIOManager> ioMan = CacheFileIOManager::gInstance;
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if (!IsClosed() && ioMan) {
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ioMan->CloseHandleInternal(this);
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}
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}
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void
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CacheFileHandle::Log()
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{
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nsAutoCString leafName;
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if (mFile) {
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mFile->GetNativeLeafName(leafName);
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}
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if (mSpecialFile) {
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LOG(("CacheFileHandle::Log() - special file [this=%p, isDoomed=%d, "
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"priority=%d, closed=%d, invalid=%d, fileExists=%d, fileSize=%lld, "
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"leafName=%s, key=%s]", this, mIsDoomed, mPriority, mClosed, mInvalid,
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mFileExists, mFileSize, leafName.get(), mKey.get()));
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} else {
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LOG(("CacheFileHandle::Log() - entry file [this=%p, hash=%08x%08x%08x%08x"
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"%08x, isDoomed=%d, priority=%d, closed=%d, invalid=%d, fileExists=%d,"
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" fileSize=%lld, leafName=%s, key=%s]", this, LOGSHA1(mHash),
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mIsDoomed, mPriority, mClosed, mInvalid, mFileExists, mFileSize,
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leafName.get(), mKey.get()));
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}
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}
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uint32_t
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CacheFileHandle::FileSizeInK() const
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{
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MOZ_ASSERT(mFileSize != -1);
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uint64_t size64 = mFileSize;
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size64 += 0x3FF;
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size64 >>= 10;
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uint32_t size;
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if (size64 >> 32) {
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NS_WARNING("CacheFileHandle::FileSizeInK() - FileSize is too large, "
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"truncating to PR_UINT32_MAX");
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size = PR_UINT32_MAX;
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} else {
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size = static_cast<uint32_t>(size64);
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}
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return size;
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}
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// Memory reporting
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size_t
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CacheFileHandle::SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const
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{
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size_t n = 0;
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nsCOMPtr<nsISizeOf> sizeOf;
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sizeOf = do_QueryInterface(mFile);
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if (sizeOf) {
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n += sizeOf->SizeOfIncludingThis(mallocSizeOf);
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}
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n += mallocSizeOf(mFD);
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n += mKey.SizeOfExcludingThisIfUnshared(mallocSizeOf);
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return n;
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}
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size_t
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CacheFileHandle::SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const
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{
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return mallocSizeOf(this) + SizeOfExcludingThis(mallocSizeOf);
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}
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/******************************************************************************
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* CacheFileHandles::HandleHashKey
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*****************************************************************************/
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void
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CacheFileHandles::HandleHashKey::AddHandle(CacheFileHandle* aHandle)
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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mHandles.InsertElementAt(0, aHandle);
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}
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void
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CacheFileHandles::HandleHashKey::RemoveHandle(CacheFileHandle* aHandle)
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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DebugOnly<bool> found;
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found = mHandles.RemoveElement(aHandle);
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MOZ_ASSERT(found);
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}
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already_AddRefed<CacheFileHandle>
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CacheFileHandles::HandleHashKey::GetNewestHandle()
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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nsRefPtr<CacheFileHandle> handle;
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if (mHandles.Length()) {
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handle = mHandles[0];
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}
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return handle.forget();
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}
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void
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CacheFileHandles::HandleHashKey::GetHandles(nsTArray<nsRefPtr<CacheFileHandle> > &aResult)
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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for (uint32_t i = 0; i < mHandles.Length(); ++i) {
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CacheFileHandle* handle = mHandles[i];
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aResult.AppendElement(handle);
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}
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}
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#ifdef DEBUG
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void
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CacheFileHandles::HandleHashKey::AssertHandlesState()
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{
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for (uint32_t i = 0; i < mHandles.Length(); ++i) {
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CacheFileHandle* handle = mHandles[i];
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MOZ_ASSERT(handle->IsDoomed());
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}
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}
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#endif
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size_t
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CacheFileHandles::HandleHashKey::SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
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size_t n = 0;
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n += mallocSizeOf(mHash);
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for (uint32_t i = 0; i < mHandles.Length(); ++i) {
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n += mHandles[i]->SizeOfIncludingThis(mallocSizeOf);
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}
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return n;
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}
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/******************************************************************************
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* CacheFileHandles
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*****************************************************************************/
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CacheFileHandles::CacheFileHandles()
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{
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LOG(("CacheFileHandles::CacheFileHandles() [this=%p]", this));
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MOZ_COUNT_CTOR(CacheFileHandles);
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}
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CacheFileHandles::~CacheFileHandles()
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{
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LOG(("CacheFileHandles::~CacheFileHandles() [this=%p]", this));
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MOZ_COUNT_DTOR(CacheFileHandles);
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}
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nsresult
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CacheFileHandles::GetHandle(const SHA1Sum::Hash *aHash,
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CacheFileHandle **_retval)
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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MOZ_ASSERT(aHash);
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#ifdef DEBUG_HANDLES
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LOG(("CacheFileHandles::GetHandle() [hash=%08x%08x%08x%08x%08x]",
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LOGSHA1(aHash)));
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#endif
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// find hash entry for key
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HandleHashKey *entry = mTable.GetEntry(*aHash);
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if (!entry) {
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LOG(("CacheFileHandles::GetHandle() hash=%08x%08x%08x%08x%08x "
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"no handle entries found", LOGSHA1(aHash)));
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return NS_ERROR_NOT_AVAILABLE;
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}
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#ifdef DEBUG_HANDLES
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Log(entry);
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#endif
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// Check if the entry is doomed
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nsRefPtr<CacheFileHandle> handle = entry->GetNewestHandle();
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if (!handle) {
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LOG(("CacheFileHandles::GetHandle() hash=%08x%08x%08x%08x%08x "
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"no handle found %p, entry %p", LOGSHA1(aHash), handle.get(), entry));
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return NS_ERROR_NOT_AVAILABLE;
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}
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if (handle->IsDoomed()) {
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LOG(("CacheFileHandles::GetHandle() hash=%08x%08x%08x%08x%08x "
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"found doomed handle %p, entry %p", LOGSHA1(aHash), handle.get(), entry));
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return NS_ERROR_NOT_AVAILABLE;
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}
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LOG(("CacheFileHandles::GetHandle() hash=%08x%08x%08x%08x%08x "
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"found handle %p, entry %p", LOGSHA1(aHash), handle.get(), entry));
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handle.forget(_retval);
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return NS_OK;
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}
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nsresult
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CacheFileHandles::NewHandle(const SHA1Sum::Hash *aHash,
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bool aPriority,
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CacheFileHandle **_retval)
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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MOZ_ASSERT(aHash);
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#ifdef DEBUG_HANDLES
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LOG(("CacheFileHandles::NewHandle() [hash=%08x%08x%08x%08x%08x]", LOGSHA1(aHash)));
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#endif
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// find hash entry for key
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HandleHashKey *entry = mTable.PutEntry(*aHash);
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#ifdef DEBUG_HANDLES
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Log(entry);
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#endif
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#ifdef DEBUG
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entry->AssertHandlesState();
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#endif
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nsRefPtr<CacheFileHandle> handle = new CacheFileHandle(entry->Hash(), aPriority);
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entry->AddHandle(handle);
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LOG(("CacheFileHandles::NewHandle() hash=%08x%08x%08x%08x%08x "
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"created new handle %p, entry=%p", LOGSHA1(aHash), handle.get(), entry));
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handle.forget(_retval);
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return NS_OK;
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}
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void
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CacheFileHandles::RemoveHandle(CacheFileHandle *aHandle)
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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MOZ_ASSERT(aHandle);
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if (!aHandle) {
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return;
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}
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#ifdef DEBUG_HANDLES
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LOG(("CacheFileHandles::RemoveHandle() [handle=%p, hash=%08x%08x%08x%08x%08x]"
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, aHandle, LOGSHA1(aHandle->Hash())));
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#endif
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// find hash entry for key
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HandleHashKey *entry = mTable.GetEntry(*aHandle->Hash());
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if (!entry) {
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MOZ_ASSERT(CacheFileIOManager::IsShutdown(),
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"Should find entry when removing a handle before shutdown");
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LOG(("CacheFileHandles::RemoveHandle() hash=%08x%08x%08x%08x%08x "
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"no entries found", LOGSHA1(aHandle->Hash())));
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return;
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}
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#ifdef DEBUG_HANDLES
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Log(entry);
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#endif
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LOG(("CacheFileHandles::RemoveHandle() hash=%08x%08x%08x%08x%08x "
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"removing handle %p", LOGSHA1(entry->Hash()), aHandle));
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entry->RemoveHandle(aHandle);
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if (entry->IsEmpty()) {
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LOG(("CacheFileHandles::RemoveHandle() hash=%08x%08x%08x%08x%08x "
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"list is empty, removing entry %p", LOGSHA1(entry->Hash()), entry));
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mTable.RemoveEntry(*entry->Hash());
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}
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}
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static PLDHashOperator
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GetAllHandlesEnum(CacheFileHandles::HandleHashKey* aEntry, void *aClosure)
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{
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nsTArray<nsRefPtr<CacheFileHandle> > *array =
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static_cast<nsTArray<nsRefPtr<CacheFileHandle> > *>(aClosure);
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aEntry->GetHandles(*array);
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return PL_DHASH_NEXT;
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}
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void
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CacheFileHandles::GetAllHandles(nsTArray<nsRefPtr<CacheFileHandle> > *_retval)
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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mTable.EnumerateEntries(&GetAllHandlesEnum, _retval);
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}
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static PLDHashOperator
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GetActiveHandlesEnum(CacheFileHandles::HandleHashKey* aEntry, void *aClosure)
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{
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nsTArray<nsRefPtr<CacheFileHandle> > *array =
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static_cast<nsTArray<nsRefPtr<CacheFileHandle> > *>(aClosure);
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nsRefPtr<CacheFileHandle> handle = aEntry->GetNewestHandle();
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MOZ_ASSERT(handle);
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if (!handle->IsDoomed()) {
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array->AppendElement(handle);
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}
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return PL_DHASH_NEXT;
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}
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void
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CacheFileHandles::GetActiveHandles(
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nsTArray<nsRefPtr<CacheFileHandle> > *_retval)
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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mTable.EnumerateEntries(&GetActiveHandlesEnum, _retval);
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}
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void
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CacheFileHandles::ClearAll()
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
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mTable.Clear();
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}
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uint32_t
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CacheFileHandles::HandleCount()
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{
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return mTable.Count();
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}
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#ifdef DEBUG_HANDLES
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void
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CacheFileHandles::Log(CacheFileHandlesEntry *entry)
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{
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LOG(("CacheFileHandles::Log() BEGIN [entry=%p]", entry));
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nsTArray<nsRefPtr<CacheFileHandle> > array;
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aEntry->GetHandles(array);
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for (uint32_t i = 0; i < array.Length(); ++i) {
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CacheFileHandle *handle = array[i];
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handle->Log();
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}
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LOG(("CacheFileHandles::Log() END [entry=%p]", entry));
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}
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#endif
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// Memory reporting
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size_t
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CacheFileHandles::SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf) const
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{
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MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
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return mTable.SizeOfExcludingThis(mallocSizeOf);
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}
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// Events
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class ShutdownEvent : public nsRunnable {
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public:
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ShutdownEvent(mozilla::Mutex *aLock, mozilla::CondVar *aCondVar)
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: mLock(aLock)
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, mCondVar(aCondVar)
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{
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MOZ_COUNT_CTOR(ShutdownEvent);
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}
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protected:
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~ShutdownEvent()
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{
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MOZ_COUNT_DTOR(ShutdownEvent);
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}
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public:
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NS_IMETHOD Run()
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{
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MutexAutoLock lock(*mLock);
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CacheFileIOManager::gInstance->ShutdownInternal();
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mCondVar->Notify();
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
mozilla::Mutex *mLock;
|
|
mozilla::CondVar *mCondVar;
|
|
};
|
|
|
|
class OpenFileEvent : public nsRunnable {
|
|
public:
|
|
OpenFileEvent(const nsACString &aKey, uint32_t aFlags,
|
|
CacheFileIOListener *aCallback)
|
|
: mFlags(aFlags)
|
|
, mCallback(aCallback)
|
|
, mKey(aKey)
|
|
{
|
|
MOZ_COUNT_CTOR(OpenFileEvent);
|
|
mIOMan = CacheFileIOManager::gInstance;
|
|
|
|
MOZ_EVENT_TRACER_NAME_OBJECT(static_cast<nsIRunnable*>(this), aKey.BeginReading());
|
|
MOZ_EVENT_TRACER_WAIT(static_cast<nsIRunnable*>(this), "net::cache::open-background");
|
|
}
|
|
|
|
protected:
|
|
~OpenFileEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(OpenFileEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!(mFlags & CacheFileIOManager::SPECIAL_FILE)) {
|
|
SHA1Sum sum;
|
|
sum.update(mKey.BeginReading(), mKey.Length());
|
|
sum.finish(mHash);
|
|
}
|
|
|
|
MOZ_EVENT_TRACER_EXEC(static_cast<nsIRunnable*>(this), "net::cache::open-background");
|
|
if (!mIOMan) {
|
|
rv = NS_ERROR_NOT_INITIALIZED;
|
|
} else {
|
|
if (mFlags & CacheFileIOManager::SPECIAL_FILE) {
|
|
rv = mIOMan->OpenSpecialFileInternal(mKey, mFlags,
|
|
getter_AddRefs(mHandle));
|
|
} else {
|
|
rv = mIOMan->OpenFileInternal(&mHash, mKey, mFlags,
|
|
getter_AddRefs(mHandle));
|
|
}
|
|
mIOMan = nullptr;
|
|
if (mHandle) {
|
|
MOZ_EVENT_TRACER_NAME_OBJECT(mHandle.get(), mKey.get());
|
|
if (mHandle->Key().IsEmpty()) {
|
|
mHandle->Key() = mKey;
|
|
}
|
|
}
|
|
}
|
|
MOZ_EVENT_TRACER_DONE(static_cast<nsIRunnable*>(this), "net::cache::open-background");
|
|
|
|
MOZ_EVENT_TRACER_EXEC(static_cast<nsIRunnable*>(this), "net::cache::open-result");
|
|
mCallback->OnFileOpened(mHandle, rv);
|
|
MOZ_EVENT_TRACER_DONE(static_cast<nsIRunnable*>(this), "net::cache::open-result");
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
SHA1Sum::Hash mHash;
|
|
uint32_t mFlags;
|
|
nsCOMPtr<CacheFileIOListener> mCallback;
|
|
nsRefPtr<CacheFileIOManager> mIOMan;
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
nsCString mKey;
|
|
};
|
|
|
|
class ReadEvent : public nsRunnable {
|
|
public:
|
|
ReadEvent(CacheFileHandle *aHandle, int64_t aOffset, char *aBuf,
|
|
int32_t aCount, CacheFileIOListener *aCallback)
|
|
: mHandle(aHandle)
|
|
, mOffset(aOffset)
|
|
, mBuf(aBuf)
|
|
, mCount(aCount)
|
|
, mCallback(aCallback)
|
|
{
|
|
MOZ_COUNT_CTOR(ReadEvent);
|
|
|
|
MOZ_EVENT_TRACER_NAME_OBJECT(static_cast<nsIRunnable*>(this), aHandle->Key().get());
|
|
MOZ_EVENT_TRACER_WAIT(static_cast<nsIRunnable*>(this), "net::cache::read-background");
|
|
}
|
|
|
|
protected:
|
|
~ReadEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(ReadEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsresult rv;
|
|
|
|
MOZ_EVENT_TRACER_EXEC(static_cast<nsIRunnable*>(this), "net::cache::read-background");
|
|
if (mHandle->IsClosed()) {
|
|
rv = NS_ERROR_NOT_INITIALIZED;
|
|
} else {
|
|
rv = CacheFileIOManager::gInstance->ReadInternal(
|
|
mHandle, mOffset, mBuf, mCount);
|
|
}
|
|
MOZ_EVENT_TRACER_DONE(static_cast<nsIRunnable*>(this), "net::cache::read-background");
|
|
|
|
MOZ_EVENT_TRACER_EXEC(static_cast<nsIRunnable*>(this), "net::cache::read-result");
|
|
mCallback->OnDataRead(mHandle, mBuf, rv);
|
|
MOZ_EVENT_TRACER_DONE(static_cast<nsIRunnable*>(this), "net::cache::read-result");
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
int64_t mOffset;
|
|
char *mBuf;
|
|
int32_t mCount;
|
|
nsCOMPtr<CacheFileIOListener> mCallback;
|
|
};
|
|
|
|
class WriteEvent : public nsRunnable {
|
|
public:
|
|
WriteEvent(CacheFileHandle *aHandle, int64_t aOffset, const char *aBuf,
|
|
int32_t aCount, bool aValidate, bool aTruncate,
|
|
CacheFileIOListener *aCallback)
|
|
: mHandle(aHandle)
|
|
, mOffset(aOffset)
|
|
, mBuf(aBuf)
|
|
, mCount(aCount)
|
|
, mValidate(aValidate)
|
|
, mTruncate(aTruncate)
|
|
, mCallback(aCallback)
|
|
{
|
|
MOZ_COUNT_CTOR(WriteEvent);
|
|
|
|
MOZ_EVENT_TRACER_NAME_OBJECT(static_cast<nsIRunnable*>(this), aHandle->Key().get());
|
|
MOZ_EVENT_TRACER_WAIT(static_cast<nsIRunnable*>(this), "net::cache::write-background");
|
|
}
|
|
|
|
protected:
|
|
~WriteEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(WriteEvent);
|
|
|
|
if (!mCallback && mBuf) {
|
|
free(const_cast<char *>(mBuf));
|
|
}
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsresult rv;
|
|
|
|
MOZ_EVENT_TRACER_EXEC(static_cast<nsIRunnable*>(this), "net::cache::write-background");
|
|
if (mHandle->IsClosed()) {
|
|
rv = NS_ERROR_NOT_INITIALIZED;
|
|
} else {
|
|
rv = CacheFileIOManager::gInstance->WriteInternal(
|
|
mHandle, mOffset, mBuf, mCount, mValidate, mTruncate);
|
|
if (NS_FAILED(rv) && !mCallback) {
|
|
// No listener is going to handle the error, doom the file
|
|
CacheFileIOManager::gInstance->DoomFileInternal(mHandle);
|
|
}
|
|
}
|
|
MOZ_EVENT_TRACER_DONE(static_cast<nsIRunnable*>(this), "net::cache::write-background");
|
|
|
|
MOZ_EVENT_TRACER_EXEC(static_cast<nsIRunnable*>(this), "net::cache::write-result");
|
|
if (mCallback) {
|
|
mCallback->OnDataWritten(mHandle, mBuf, rv);
|
|
} else {
|
|
free(const_cast<char *>(mBuf));
|
|
mBuf = nullptr;
|
|
}
|
|
MOZ_EVENT_TRACER_DONE(static_cast<nsIRunnable*>(this), "net::cache::write-result");
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
int64_t mOffset;
|
|
const char *mBuf;
|
|
int32_t mCount;
|
|
bool mValidate : 1;
|
|
bool mTruncate : 1;
|
|
nsCOMPtr<CacheFileIOListener> mCallback;
|
|
};
|
|
|
|
class DoomFileEvent : public nsRunnable {
|
|
public:
|
|
DoomFileEvent(CacheFileHandle *aHandle,
|
|
CacheFileIOListener *aCallback)
|
|
: mCallback(aCallback)
|
|
, mHandle(aHandle)
|
|
{
|
|
MOZ_COUNT_CTOR(DoomFileEvent);
|
|
|
|
MOZ_EVENT_TRACER_NAME_OBJECT(static_cast<nsIRunnable*>(this), aHandle->Key().get());
|
|
MOZ_EVENT_TRACER_WAIT(static_cast<nsIRunnable*>(this), "net::cache::doom-background");
|
|
}
|
|
|
|
protected:
|
|
~DoomFileEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(DoomFileEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsresult rv;
|
|
|
|
MOZ_EVENT_TRACER_EXEC(static_cast<nsIRunnable*>(this), "net::cache::doom-background");
|
|
if (mHandle->IsClosed()) {
|
|
rv = NS_ERROR_NOT_INITIALIZED;
|
|
} else {
|
|
rv = CacheFileIOManager::gInstance->DoomFileInternal(mHandle);
|
|
}
|
|
MOZ_EVENT_TRACER_DONE(static_cast<nsIRunnable*>(this), "net::cache::doom-background");
|
|
|
|
MOZ_EVENT_TRACER_EXEC(static_cast<nsIRunnable*>(this), "net::cache::doom-result");
|
|
if (mCallback) {
|
|
mCallback->OnFileDoomed(mHandle, rv);
|
|
}
|
|
MOZ_EVENT_TRACER_DONE(static_cast<nsIRunnable*>(this), "net::cache::doom-result");
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
nsCOMPtr<CacheFileIOListener> mCallback;
|
|
nsCOMPtr<nsIEventTarget> mTarget;
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
};
|
|
|
|
class DoomFileByKeyEvent : public nsRunnable {
|
|
public:
|
|
DoomFileByKeyEvent(const nsACString &aKey,
|
|
CacheFileIOListener *aCallback)
|
|
: mCallback(aCallback)
|
|
{
|
|
MOZ_COUNT_CTOR(DoomFileByKeyEvent);
|
|
|
|
SHA1Sum sum;
|
|
sum.update(aKey.BeginReading(), aKey.Length());
|
|
sum.finish(mHash);
|
|
|
|
mIOMan = CacheFileIOManager::gInstance;
|
|
}
|
|
|
|
protected:
|
|
~DoomFileByKeyEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(DoomFileByKeyEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsresult rv;
|
|
|
|
if (!mIOMan) {
|
|
rv = NS_ERROR_NOT_INITIALIZED;
|
|
} else {
|
|
rv = mIOMan->DoomFileByKeyInternal(&mHash);
|
|
mIOMan = nullptr;
|
|
}
|
|
|
|
if (mCallback) {
|
|
mCallback->OnFileDoomed(nullptr, rv);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
SHA1Sum::Hash mHash;
|
|
nsCOMPtr<CacheFileIOListener> mCallback;
|
|
nsRefPtr<CacheFileIOManager> mIOMan;
|
|
};
|
|
|
|
class ReleaseNSPRHandleEvent : public nsRunnable {
|
|
public:
|
|
explicit ReleaseNSPRHandleEvent(CacheFileHandle *aHandle)
|
|
: mHandle(aHandle)
|
|
{
|
|
MOZ_COUNT_CTOR(ReleaseNSPRHandleEvent);
|
|
}
|
|
|
|
protected:
|
|
~ReleaseNSPRHandleEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(ReleaseNSPRHandleEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
if (mHandle->mFD && !mHandle->IsClosed()) {
|
|
CacheFileIOManager::gInstance->ReleaseNSPRHandleInternal(mHandle);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
};
|
|
|
|
class TruncateSeekSetEOFEvent : public nsRunnable {
|
|
public:
|
|
TruncateSeekSetEOFEvent(CacheFileHandle *aHandle, int64_t aTruncatePos,
|
|
int64_t aEOFPos, CacheFileIOListener *aCallback)
|
|
: mHandle(aHandle)
|
|
, mTruncatePos(aTruncatePos)
|
|
, mEOFPos(aEOFPos)
|
|
, mCallback(aCallback)
|
|
{
|
|
MOZ_COUNT_CTOR(TruncateSeekSetEOFEvent);
|
|
}
|
|
|
|
protected:
|
|
~TruncateSeekSetEOFEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(TruncateSeekSetEOFEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsresult rv;
|
|
|
|
if (mHandle->IsClosed()) {
|
|
rv = NS_ERROR_NOT_INITIALIZED;
|
|
} else {
|
|
rv = CacheFileIOManager::gInstance->TruncateSeekSetEOFInternal(
|
|
mHandle, mTruncatePos, mEOFPos);
|
|
}
|
|
|
|
if (mCallback) {
|
|
mCallback->OnEOFSet(mHandle, rv);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
int64_t mTruncatePos;
|
|
int64_t mEOFPos;
|
|
nsCOMPtr<CacheFileIOListener> mCallback;
|
|
};
|
|
|
|
class RenameFileEvent : public nsRunnable {
|
|
public:
|
|
RenameFileEvent(CacheFileHandle *aHandle, const nsACString &aNewName,
|
|
CacheFileIOListener *aCallback)
|
|
: mHandle(aHandle)
|
|
, mNewName(aNewName)
|
|
, mCallback(aCallback)
|
|
{
|
|
MOZ_COUNT_CTOR(RenameFileEvent);
|
|
}
|
|
|
|
protected:
|
|
~RenameFileEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(RenameFileEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsresult rv;
|
|
|
|
if (mHandle->IsClosed()) {
|
|
rv = NS_ERROR_NOT_INITIALIZED;
|
|
} else {
|
|
rv = CacheFileIOManager::gInstance->RenameFileInternal(mHandle,
|
|
mNewName);
|
|
}
|
|
|
|
if (mCallback) {
|
|
mCallback->OnFileRenamed(mHandle, rv);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
nsCString mNewName;
|
|
nsCOMPtr<CacheFileIOListener> mCallback;
|
|
};
|
|
|
|
class InitIndexEntryEvent : public nsRunnable {
|
|
public:
|
|
InitIndexEntryEvent(CacheFileHandle *aHandle, uint32_t aAppId,
|
|
bool aAnonymous, bool aInBrowser)
|
|
: mHandle(aHandle)
|
|
, mAppId(aAppId)
|
|
, mAnonymous(aAnonymous)
|
|
, mInBrowser(aInBrowser)
|
|
{
|
|
MOZ_COUNT_CTOR(InitIndexEntryEvent);
|
|
}
|
|
|
|
protected:
|
|
~InitIndexEntryEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(InitIndexEntryEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
if (mHandle->IsClosed() || mHandle->IsDoomed()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
CacheIndex::InitEntry(mHandle->Hash(), mAppId, mAnonymous, mInBrowser);
|
|
|
|
// We cannot set the filesize before we init the entry. If we're opening
|
|
// an existing entry file, frecency and expiration time will be set after
|
|
// parsing the entry file, but we must set the filesize here since nobody is
|
|
// going to set it if there is no write to the file.
|
|
uint32_t sizeInK = mHandle->FileSizeInK();
|
|
CacheIndex::UpdateEntry(mHandle->Hash(), nullptr, nullptr, &sizeInK);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
uint32_t mAppId;
|
|
bool mAnonymous;
|
|
bool mInBrowser;
|
|
};
|
|
|
|
class UpdateIndexEntryEvent : public nsRunnable {
|
|
public:
|
|
UpdateIndexEntryEvent(CacheFileHandle *aHandle, const uint32_t *aFrecency,
|
|
const uint32_t *aExpirationTime)
|
|
: mHandle(aHandle)
|
|
, mHasFrecency(false)
|
|
, mHasExpirationTime(false)
|
|
{
|
|
MOZ_COUNT_CTOR(UpdateIndexEntryEvent);
|
|
if (aFrecency) {
|
|
mHasFrecency = true;
|
|
mFrecency = *aFrecency;
|
|
}
|
|
if (aExpirationTime) {
|
|
mHasExpirationTime = true;
|
|
mExpirationTime = *aExpirationTime;
|
|
}
|
|
}
|
|
|
|
protected:
|
|
~UpdateIndexEntryEvent()
|
|
{
|
|
MOZ_COUNT_DTOR(UpdateIndexEntryEvent);
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD Run()
|
|
{
|
|
if (mHandle->IsClosed() || mHandle->IsDoomed()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
CacheIndex::UpdateEntry(mHandle->Hash(),
|
|
mHasFrecency ? &mFrecency : nullptr,
|
|
mHasExpirationTime ? &mExpirationTime : nullptr,
|
|
nullptr);
|
|
return NS_OK;
|
|
}
|
|
|
|
protected:
|
|
nsRefPtr<CacheFileHandle> mHandle;
|
|
bool mHasFrecency;
|
|
bool mHasExpirationTime;
|
|
uint32_t mFrecency;
|
|
uint32_t mExpirationTime;
|
|
};
|
|
|
|
class MetadataWriteScheduleEvent : public nsRunnable
|
|
{
|
|
public:
|
|
enum EMode {
|
|
SCHEDULE,
|
|
UNSCHEDULE,
|
|
SHUTDOWN
|
|
} mMode;
|
|
|
|
nsRefPtr<CacheFile> mFile;
|
|
nsRefPtr<CacheFileIOManager> mIOMan;
|
|
|
|
MetadataWriteScheduleEvent(CacheFileIOManager * aManager,
|
|
CacheFile * aFile,
|
|
EMode aMode)
|
|
: mMode(aMode)
|
|
, mFile(aFile)
|
|
, mIOMan(aManager)
|
|
{ }
|
|
|
|
virtual ~MetadataWriteScheduleEvent() { }
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsRefPtr<CacheFileIOManager> ioMan = CacheFileIOManager::gInstance;
|
|
if (!ioMan) {
|
|
NS_WARNING("CacheFileIOManager already gone in MetadataWriteScheduleEvent::Run()");
|
|
return NS_OK;
|
|
}
|
|
|
|
switch (mMode)
|
|
{
|
|
case SCHEDULE:
|
|
ioMan->ScheduleMetadataWriteInternal(mFile);
|
|
break;
|
|
case UNSCHEDULE:
|
|
ioMan->UnscheduleMetadataWriteInternal(mFile);
|
|
break;
|
|
case SHUTDOWN:
|
|
ioMan->ShutdownMetadataWriteSchedulingInternal();
|
|
break;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
CacheFileIOManager * CacheFileIOManager::gInstance = nullptr;
|
|
|
|
NS_IMPL_ISUPPORTS(CacheFileIOManager, nsITimerCallback)
|
|
|
|
CacheFileIOManager::CacheFileIOManager()
|
|
: mShuttingDown(false)
|
|
, mTreeCreated(false)
|
|
, mOverLimitEvicting(false)
|
|
, mRemovingTrashDirs(false)
|
|
{
|
|
LOG(("CacheFileIOManager::CacheFileIOManager [this=%p]", this));
|
|
MOZ_COUNT_CTOR(CacheFileIOManager);
|
|
MOZ_ASSERT(!gInstance, "multiple CacheFileIOManager instances!");
|
|
}
|
|
|
|
CacheFileIOManager::~CacheFileIOManager()
|
|
{
|
|
LOG(("CacheFileIOManager::~CacheFileIOManager [this=%p]", this));
|
|
MOZ_COUNT_DTOR(CacheFileIOManager);
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::Init()
|
|
{
|
|
LOG(("CacheFileIOManager::Init()"));
|
|
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (gInstance) {
|
|
return NS_ERROR_ALREADY_INITIALIZED;
|
|
}
|
|
|
|
nsRefPtr<CacheFileIOManager> ioMan = new CacheFileIOManager();
|
|
|
|
nsresult rv = ioMan->InitInternal();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
ioMan.swap(gInstance);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::InitInternal()
|
|
{
|
|
nsresult rv;
|
|
|
|
mIOThread = new CacheIOThread();
|
|
|
|
rv = mIOThread->Init();
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv), "Can't create background thread");
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mStartTime = TimeStamp::NowLoRes();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::Shutdown()
|
|
{
|
|
LOG(("CacheFileIOManager::Shutdown() [gInstance=%p]", gInstance));
|
|
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (!gInstance) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
Telemetry::AutoTimer<Telemetry::NETWORK_DISK_CACHE_SHUTDOWN_V2> shutdownTimer;
|
|
|
|
CacheIndex::PreShutdown();
|
|
|
|
ShutdownMetadataWriteScheduling();
|
|
|
|
{
|
|
mozilla::Mutex lock("CacheFileIOManager::Shutdown() lock");
|
|
mozilla::CondVar condVar(lock, "CacheFileIOManager::Shutdown() condVar");
|
|
|
|
MutexAutoLock autoLock(lock);
|
|
nsRefPtr<ShutdownEvent> ev = new ShutdownEvent(&lock, &condVar);
|
|
DebugOnly<nsresult> rv;
|
|
rv = gInstance->mIOThread->Dispatch(ev, CacheIOThread::CLOSE);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
|
condVar.Wait();
|
|
}
|
|
|
|
MOZ_ASSERT(gInstance->mHandles.HandleCount() == 0);
|
|
MOZ_ASSERT(gInstance->mHandlesByLastUsed.Length() == 0);
|
|
|
|
if (gInstance->mIOThread) {
|
|
gInstance->mIOThread->Shutdown();
|
|
}
|
|
|
|
CacheIndex::Shutdown();
|
|
|
|
if (CacheObserver::ClearCacheOnShutdown()) {
|
|
Telemetry::AutoTimer<Telemetry::NETWORK_DISK_CACHE2_SHUTDOWN_CLEAR_PRIVATE> totalTimer;
|
|
gInstance->SyncRemoveAllCacheFiles();
|
|
}
|
|
|
|
nsRefPtr<CacheFileIOManager> ioMan;
|
|
ioMan.swap(gInstance);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::ShutdownInternal()
|
|
{
|
|
LOG(("CacheFileIOManager::ShutdownInternal() [this=%p]", this));
|
|
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
// No new handles can be created after this flag is set
|
|
mShuttingDown = true;
|
|
|
|
// close all handles and delete all associated files
|
|
nsTArray<nsRefPtr<CacheFileHandle> > handles;
|
|
mHandles.GetAllHandles(&handles);
|
|
handles.AppendElements(mSpecialHandles);
|
|
|
|
for (uint32_t i=0 ; i<handles.Length() ; i++) {
|
|
CacheFileHandle *h = handles[i];
|
|
h->mClosed = true;
|
|
|
|
h->Log();
|
|
|
|
// Close file handle
|
|
if (h->mFD) {
|
|
ReleaseNSPRHandleInternal(h);
|
|
}
|
|
|
|
// Remove file if entry is doomed or invalid
|
|
if (h->mFileExists && (h->mIsDoomed || h->mInvalid)) {
|
|
LOG(("CacheFileIOManager::ShutdownInternal() - Removing file from disk"));
|
|
h->mFile->Remove(false);
|
|
}
|
|
|
|
if (!h->IsSpecialFile() && !h->mIsDoomed &&
|
|
(h->mInvalid || !h->mFileExists)) {
|
|
CacheIndex::RemoveEntry(h->Hash());
|
|
}
|
|
|
|
// Remove the handle from mHandles/mSpecialHandles
|
|
if (h->IsSpecialFile()) {
|
|
mSpecialHandles.RemoveElement(h);
|
|
} else {
|
|
mHandles.RemoveHandle(h);
|
|
}
|
|
|
|
// Pointer to the hash is no longer valid once the last handle with the
|
|
// given hash is released. Null out the pointer so that we crash if there
|
|
// is a bug in this code and we dereference the pointer after this point.
|
|
if (!h->IsSpecialFile()) {
|
|
h->mHash = nullptr;
|
|
}
|
|
}
|
|
|
|
// Assert the table is empty. When we are here, no new handles can be added
|
|
// and handles will no longer remove them self from this table and we don't
|
|
// want to keep invalid handles here. Also, there is no lookup after this
|
|
// point to happen.
|
|
MOZ_ASSERT(mHandles.HandleCount() == 0);
|
|
|
|
// Release trash directory enumerator
|
|
if (mTrashDirEnumerator) {
|
|
mTrashDirEnumerator->Close();
|
|
mTrashDirEnumerator = nullptr;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::OnProfile()
|
|
{
|
|
LOG(("CacheFileIOManager::OnProfile() [gInstance=%p]", gInstance));
|
|
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
if (!ioMan) {
|
|
// CacheFileIOManager::Init() failed, probably could not create the IO
|
|
// thread, just go with it...
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsIFile> directory;
|
|
|
|
CacheObserver::ParentDirOverride(getter_AddRefs(directory));
|
|
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
nsCOMPtr<nsIFile> profilelessDirectory;
|
|
char* cachePath = getenv("CACHE_DIRECTORY");
|
|
if (!directory && cachePath && *cachePath) {
|
|
rv = NS_NewNativeLocalFile(nsDependentCString(cachePath),
|
|
true, getter_AddRefs(directory));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// Save this directory as the profileless path.
|
|
rv = directory->Clone(getter_AddRefs(profilelessDirectory));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Add profile leaf name to the directory name to distinguish
|
|
// multiple profiles Fennec supports.
|
|
nsCOMPtr<nsIFile> profD;
|
|
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
|
|
getter_AddRefs(profD));
|
|
|
|
nsAutoCString leafName;
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = profD->GetNativeLeafName(leafName);
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = directory->AppendNative(leafName);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
directory = nullptr;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (!directory) {
|
|
rv = NS_GetSpecialDirectory(NS_APP_CACHE_PARENT_DIR,
|
|
getter_AddRefs(directory));
|
|
}
|
|
|
|
if (!directory) {
|
|
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_LOCAL_50_DIR,
|
|
getter_AddRefs(directory));
|
|
}
|
|
|
|
if (directory) {
|
|
rv = directory->Append(NS_LITERAL_STRING("cache2"));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// All functions return a clone.
|
|
ioMan->mCacheDirectory.swap(directory);
|
|
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
if (profilelessDirectory) {
|
|
rv = profilelessDirectory->Append(NS_LITERAL_STRING("cache2"));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
ioMan->mCacheProfilelessDirectory.swap(profilelessDirectory);
|
|
#endif
|
|
|
|
if (ioMan->mCacheDirectory) {
|
|
CacheIndex::Init(ioMan->mCacheDirectory);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
already_AddRefed<nsIEventTarget>
|
|
CacheFileIOManager::IOTarget()
|
|
{
|
|
nsCOMPtr<nsIEventTarget> target;
|
|
if (gInstance && gInstance->mIOThread) {
|
|
target = gInstance->mIOThread->Target();
|
|
}
|
|
|
|
return target.forget();
|
|
}
|
|
|
|
// static
|
|
already_AddRefed<CacheIOThread>
|
|
CacheFileIOManager::IOThread()
|
|
{
|
|
nsRefPtr<CacheIOThread> thread;
|
|
if (gInstance) {
|
|
thread = gInstance->mIOThread;
|
|
}
|
|
|
|
return thread.forget();
|
|
}
|
|
|
|
// static
|
|
bool
|
|
CacheFileIOManager::IsOnIOThread()
|
|
{
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
if (ioMan && ioMan->mIOThread) {
|
|
return ioMan->mIOThread->IsCurrentThread();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// static
|
|
bool
|
|
CacheFileIOManager::IsOnIOThreadOrCeased()
|
|
{
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
if (ioMan && ioMan->mIOThread) {
|
|
return ioMan->mIOThread->IsCurrentThread();
|
|
}
|
|
|
|
// Ceased...
|
|
return true;
|
|
}
|
|
|
|
// static
|
|
bool
|
|
CacheFileIOManager::IsShutdown()
|
|
{
|
|
if (!gInstance) {
|
|
return true;
|
|
}
|
|
return gInstance->mShuttingDown;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::ScheduleMetadataWrite(CacheFile * aFile)
|
|
{
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
NS_ENSURE_TRUE(ioMan, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
NS_ENSURE_TRUE(!ioMan->mShuttingDown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsRefPtr<MetadataWriteScheduleEvent> event = new MetadataWriteScheduleEvent(
|
|
ioMan, aFile, MetadataWriteScheduleEvent::SCHEDULE);
|
|
nsCOMPtr<nsIEventTarget> target = ioMan->IOTarget();
|
|
NS_ENSURE_TRUE(target, NS_ERROR_UNEXPECTED);
|
|
return target->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::ScheduleMetadataWriteInternal(CacheFile * aFile)
|
|
{
|
|
MOZ_ASSERT(IsOnIOThreadOrCeased());
|
|
|
|
nsresult rv;
|
|
|
|
if (!mMetadataWritesTimer) {
|
|
mMetadataWritesTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = mMetadataWritesTimer->InitWithCallback(
|
|
this, kMetadataWriteDelay, nsITimer::TYPE_ONE_SHOT);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (mScheduledMetadataWrites.IndexOf(aFile) !=
|
|
mScheduledMetadataWrites.NoIndex) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mScheduledMetadataWrites.AppendElement(aFile);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::UnscheduleMetadataWrite(CacheFile * aFile)
|
|
{
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
NS_ENSURE_TRUE(ioMan, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
NS_ENSURE_TRUE(!ioMan->mShuttingDown, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsRefPtr<MetadataWriteScheduleEvent> event = new MetadataWriteScheduleEvent(
|
|
ioMan, aFile, MetadataWriteScheduleEvent::UNSCHEDULE);
|
|
nsCOMPtr<nsIEventTarget> target = ioMan->IOTarget();
|
|
NS_ENSURE_TRUE(target, NS_ERROR_UNEXPECTED);
|
|
return target->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::UnscheduleMetadataWriteInternal(CacheFile * aFile)
|
|
{
|
|
MOZ_ASSERT(IsOnIOThreadOrCeased());
|
|
|
|
mScheduledMetadataWrites.RemoveElement(aFile);
|
|
|
|
if (mScheduledMetadataWrites.Length() == 0 &&
|
|
mMetadataWritesTimer) {
|
|
mMetadataWritesTimer->Cancel();
|
|
mMetadataWritesTimer = nullptr;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::ShutdownMetadataWriteScheduling()
|
|
{
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
NS_ENSURE_TRUE(ioMan, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
nsRefPtr<MetadataWriteScheduleEvent> event = new MetadataWriteScheduleEvent(
|
|
ioMan, nullptr, MetadataWriteScheduleEvent::SHUTDOWN);
|
|
nsCOMPtr<nsIEventTarget> target = ioMan->IOTarget();
|
|
NS_ENSURE_TRUE(target, NS_ERROR_UNEXPECTED);
|
|
return target->Dispatch(event, nsIEventTarget::DISPATCH_NORMAL);
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::ShutdownMetadataWriteSchedulingInternal()
|
|
{
|
|
MOZ_ASSERT(IsOnIOThreadOrCeased());
|
|
|
|
nsTArray<nsRefPtr<CacheFile> > files;
|
|
files.SwapElements(mScheduledMetadataWrites);
|
|
for (uint32_t i = 0; i < files.Length(); ++i) {
|
|
CacheFile * file = files[i];
|
|
file->WriteMetadataIfNeeded();
|
|
}
|
|
|
|
if (mMetadataWritesTimer) {
|
|
mMetadataWritesTimer->Cancel();
|
|
mMetadataWritesTimer = nullptr;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileIOManager::Notify(nsITimer * aTimer)
|
|
{
|
|
MOZ_ASSERT(IsOnIOThreadOrCeased());
|
|
MOZ_ASSERT(mMetadataWritesTimer == aTimer);
|
|
|
|
mMetadataWritesTimer = nullptr;
|
|
|
|
nsTArray<nsRefPtr<CacheFile> > files;
|
|
files.SwapElements(mScheduledMetadataWrites);
|
|
for (uint32_t i = 0; i < files.Length(); ++i) {
|
|
CacheFile * file = files[i];
|
|
file->WriteMetadataIfNeeded();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::OpenFile(const nsACString &aKey,
|
|
uint32_t aFlags, CacheFileIOListener *aCallback)
|
|
{
|
|
LOG(("CacheFileIOManager::OpenFile() [key=%s, flags=%d, listener=%p]",
|
|
PromiseFlatCString(aKey).get(), aFlags, aCallback));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (!ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
bool priority = aFlags & CacheFileIOManager::PRIORITY;
|
|
nsRefPtr<OpenFileEvent> ev = new OpenFileEvent(aKey, aFlags, aCallback);
|
|
rv = ioMan->mIOThread->Dispatch(ev, priority
|
|
? CacheIOThread::OPEN_PRIORITY
|
|
: CacheIOThread::OPEN);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::OpenFileInternal(const SHA1Sum::Hash *aHash,
|
|
const nsACString &aKey,
|
|
uint32_t aFlags,
|
|
CacheFileHandle **_retval)
|
|
{
|
|
LOG(("CacheFileIOManager::OpenFileInternal() [hash=%08x%08x%08x%08x%08x, "
|
|
"key=%s, flags=%d]", LOGSHA1(aHash), PromiseFlatCString(aKey).get(),
|
|
aFlags));
|
|
|
|
MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
|
|
|
|
nsresult rv;
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (!mTreeCreated) {
|
|
rv = CreateCacheTree();
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = GetFile(aHash, getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsRefPtr<CacheFileHandle> handle;
|
|
mHandles.GetHandle(aHash, getter_AddRefs(handle));
|
|
|
|
if ((aFlags & (OPEN | CREATE | CREATE_NEW)) == CREATE_NEW) {
|
|
if (handle) {
|
|
rv = DoomFileInternal(handle);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
handle = nullptr;
|
|
}
|
|
|
|
rv = mHandles.NewHandle(aHash, aFlags & PRIORITY, getter_AddRefs(handle));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool exists;
|
|
rv = file->Exists(&exists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (exists) {
|
|
CacheIndex::RemoveEntry(aHash);
|
|
|
|
LOG(("CacheFileIOManager::OpenFileInternal() - Removing old file from "
|
|
"disk"));
|
|
rv = file->Remove(false);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Cannot remove old entry from the disk");
|
|
LOG(("CacheFileIOManager::OpenFileInternal() - Removing old file failed"
|
|
". [rv=0x%08x]", rv));
|
|
}
|
|
}
|
|
|
|
CacheIndex::AddEntry(aHash);
|
|
handle->mFile.swap(file);
|
|
handle->mFileSize = 0;
|
|
}
|
|
|
|
if (handle) {
|
|
handle.swap(*_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
bool exists;
|
|
rv = file->Exists(&exists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (exists && mContextEvictor) {
|
|
if (mContextEvictor->ContextsCount() == 0) {
|
|
mContextEvictor = nullptr;
|
|
} else {
|
|
bool wasEvicted = false;
|
|
mContextEvictor->WasEvicted(aKey, file, &wasEvicted);
|
|
if (wasEvicted) {
|
|
LOG(("CacheFileIOManager::OpenFileInternal() - Removing file since the "
|
|
"entry was evicted by EvictByContext()"));
|
|
exists = false;
|
|
file->Remove(false);
|
|
CacheIndex::RemoveEntry(aHash);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!exists && (aFlags & (OPEN | CREATE | CREATE_NEW)) == OPEN) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
rv = mHandles.NewHandle(aHash, aFlags & PRIORITY, getter_AddRefs(handle));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (exists) {
|
|
rv = file->GetFileSize(&handle->mFileSize);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
handle->mFileExists = true;
|
|
|
|
CacheIndex::EnsureEntryExists(aHash);
|
|
} else {
|
|
handle->mFileSize = 0;
|
|
|
|
CacheIndex::AddEntry(aHash);
|
|
}
|
|
|
|
handle->mFile.swap(file);
|
|
handle.swap(*_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::OpenSpecialFileInternal(const nsACString &aKey,
|
|
uint32_t aFlags,
|
|
CacheFileHandle **_retval)
|
|
{
|
|
LOG(("CacheFileIOManager::OpenSpecialFileInternal() [key=%s, flags=%d]",
|
|
PromiseFlatCString(aKey).get(), aFlags));
|
|
|
|
MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
|
|
|
|
nsresult rv;
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (!mTreeCreated) {
|
|
rv = CreateCacheTree();
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = GetSpecialFile(aKey, getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsRefPtr<CacheFileHandle> handle;
|
|
for (uint32_t i = 0 ; i < mSpecialHandles.Length() ; i++) {
|
|
if (!mSpecialHandles[i]->IsDoomed() && mSpecialHandles[i]->Key() == aKey) {
|
|
handle = mSpecialHandles[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((aFlags & (OPEN | CREATE | CREATE_NEW)) == CREATE_NEW) {
|
|
if (handle) {
|
|
rv = DoomFileInternal(handle);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
handle = nullptr;
|
|
}
|
|
|
|
handle = new CacheFileHandle(aKey, aFlags & PRIORITY);
|
|
mSpecialHandles.AppendElement(handle);
|
|
|
|
bool exists;
|
|
rv = file->Exists(&exists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (exists) {
|
|
LOG(("CacheFileIOManager::OpenSpecialFileInternal() - Removing file from "
|
|
"disk"));
|
|
rv = file->Remove(false);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Cannot remove old entry from the disk");
|
|
LOG(("CacheFileIOManager::OpenSpecialFileInternal() - Removing file "
|
|
"failed. [rv=0x%08x]", rv));
|
|
}
|
|
}
|
|
|
|
handle->mFile.swap(file);
|
|
handle->mFileSize = 0;
|
|
}
|
|
|
|
if (handle) {
|
|
handle.swap(*_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
bool exists;
|
|
rv = file->Exists(&exists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!exists && (aFlags & (OPEN | CREATE | CREATE_NEW)) == OPEN) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
handle = new CacheFileHandle(aKey, aFlags & PRIORITY);
|
|
mSpecialHandles.AppendElement(handle);
|
|
|
|
if (exists) {
|
|
rv = file->GetFileSize(&handle->mFileSize);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
handle->mFileExists = true;
|
|
} else {
|
|
handle->mFileSize = 0;
|
|
}
|
|
|
|
handle->mFile.swap(file);
|
|
handle.swap(*_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::CloseHandleInternal(CacheFileHandle *aHandle)
|
|
{
|
|
LOG(("CacheFileIOManager::CloseHandleInternal() [handle=%p]", aHandle));
|
|
|
|
MOZ_ASSERT(!aHandle->IsClosed());
|
|
|
|
aHandle->Log();
|
|
|
|
MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
|
|
|
|
// Close file handle
|
|
if (aHandle->mFD) {
|
|
ReleaseNSPRHandleInternal(aHandle);
|
|
}
|
|
|
|
// Delete the file if the entry was doomed or invalid
|
|
if (aHandle->mIsDoomed || aHandle->mInvalid) {
|
|
LOG(("CacheFileIOManager::CloseHandleInternal() - Removing file from "
|
|
"disk"));
|
|
aHandle->mFile->Remove(false);
|
|
}
|
|
|
|
if (!aHandle->IsSpecialFile() && !aHandle->mIsDoomed &&
|
|
(aHandle->mInvalid || !aHandle->mFileExists)) {
|
|
CacheIndex::RemoveEntry(aHandle->Hash());
|
|
}
|
|
|
|
// Don't remove handles after shutdown
|
|
if (!mShuttingDown) {
|
|
if (aHandle->IsSpecialFile()) {
|
|
mSpecialHandles.RemoveElement(aHandle);
|
|
} else {
|
|
mHandles.RemoveHandle(aHandle);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::Read(CacheFileHandle *aHandle, int64_t aOffset,
|
|
char *aBuf, int32_t aCount,
|
|
CacheFileIOListener *aCallback)
|
|
{
|
|
LOG(("CacheFileIOManager::Read() [handle=%p, offset=%lld, count=%d, "
|
|
"listener=%p]", aHandle, aOffset, aCount, aCallback));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (aHandle->IsClosed() || !ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsRefPtr<ReadEvent> ev = new ReadEvent(aHandle, aOffset, aBuf, aCount,
|
|
aCallback);
|
|
rv = ioMan->mIOThread->Dispatch(ev, aHandle->IsPriority()
|
|
? CacheIOThread::READ_PRIORITY
|
|
: CacheIOThread::READ);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::ReadInternal(CacheFileHandle *aHandle, int64_t aOffset,
|
|
char *aBuf, int32_t aCount)
|
|
{
|
|
LOG(("CacheFileIOManager::ReadInternal() [handle=%p, offset=%lld, count=%d]",
|
|
aHandle, aOffset, aCount));
|
|
|
|
nsresult rv;
|
|
|
|
if (!aHandle->mFileExists) {
|
|
NS_WARNING("Trying to read from non-existent file");
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
if (!aHandle->mFD) {
|
|
rv = OpenNSPRHandle(aHandle);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
NSPRHandleUsed(aHandle);
|
|
}
|
|
|
|
// Check again, OpenNSPRHandle could figure out the file was gone.
|
|
if (!aHandle->mFileExists) {
|
|
NS_WARNING("Trying to read from non-existent file");
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
int64_t offset = PR_Seek64(aHandle->mFD, aOffset, PR_SEEK_SET);
|
|
if (offset == -1) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
int32_t bytesRead = PR_Read(aHandle->mFD, aBuf, aCount);
|
|
if (bytesRead != aCount) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::Write(CacheFileHandle *aHandle, int64_t aOffset,
|
|
const char *aBuf, int32_t aCount, bool aValidate,
|
|
bool aTruncate, CacheFileIOListener *aCallback)
|
|
{
|
|
LOG(("CacheFileIOManager::Write() [handle=%p, offset=%lld, count=%d, "
|
|
"validate=%d, truncate=%d, listener=%p]", aHandle, aOffset, aCount,
|
|
aValidate, aTruncate, aCallback));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (aHandle->IsClosed() || !ioMan) {
|
|
if (!aCallback) {
|
|
// When no callback is provided, CacheFileIOManager is responsible for
|
|
// releasing the buffer. We must release it even in case of failure.
|
|
free(const_cast<char *>(aBuf));
|
|
}
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsRefPtr<WriteEvent> ev = new WriteEvent(aHandle, aOffset, aBuf, aCount,
|
|
aValidate, aTruncate, aCallback);
|
|
rv = ioMan->mIOThread->Dispatch(ev, CacheIOThread::WRITE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsresult
|
|
TruncFile(PRFileDesc *aFD, int64_t aEOF)
|
|
{
|
|
#if defined(XP_UNIX)
|
|
if (ftruncate(PR_FileDesc2NativeHandle(aFD), aEOF) != 0) {
|
|
NS_ERROR("ftruncate failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
#elif defined(XP_WIN)
|
|
int64_t cnt = PR_Seek64(aFD, aEOF, PR_SEEK_SET);
|
|
if (cnt == -1) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
if (!SetEndOfFile((HANDLE) PR_FileDesc2NativeHandle(aFD))) {
|
|
NS_ERROR("SetEndOfFile failed");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
#else
|
|
MOZ_ASSERT(false, "Not implemented!");
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::WriteInternal(CacheFileHandle *aHandle, int64_t aOffset,
|
|
const char *aBuf, int32_t aCount,
|
|
bool aValidate, bool aTruncate)
|
|
{
|
|
LOG(("CacheFileIOManager::WriteInternal() [handle=%p, offset=%lld, count=%d, "
|
|
"validate=%d, truncate=%d]", aHandle, aOffset, aCount, aValidate,
|
|
aTruncate));
|
|
|
|
nsresult rv;
|
|
|
|
if (!aHandle->mFileExists) {
|
|
rv = CreateFile(aHandle);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (!aHandle->mFD) {
|
|
rv = OpenNSPRHandle(aHandle);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
NSPRHandleUsed(aHandle);
|
|
}
|
|
|
|
// Check again, OpenNSPRHandle could figure out the file was gone.
|
|
if (!aHandle->mFileExists) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
// Check whether this write would cause critical low disk space.
|
|
if (aHandle->mFileSize < aOffset + aCount) {
|
|
int64_t freeSpace = -1;
|
|
rv = mCacheDirectory->GetDiskSpaceAvailable(&freeSpace);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("CacheFileIOManager::WriteInternal() - GetDiskSpaceAvailable() "
|
|
"failed! [rv=0x%08x]", rv));
|
|
} else {
|
|
uint32_t limit = CacheObserver::DiskFreeSpaceHardLimit();
|
|
if (freeSpace - aOffset - aCount + aHandle->mFileSize < limit) {
|
|
LOG(("CacheFileIOManager::WriteInternal() - Low free space, refusing "
|
|
"to write! [freeSpace=%lld, limit=%u]", freeSpace, limit));
|
|
return NS_ERROR_FILE_DISK_FULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Write invalidates the entry by default
|
|
aHandle->mInvalid = true;
|
|
|
|
int64_t offset = PR_Seek64(aHandle->mFD, aOffset, PR_SEEK_SET);
|
|
if (offset == -1) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
int32_t bytesWritten = PR_Write(aHandle->mFD, aBuf, aCount);
|
|
|
|
if (bytesWritten != -1) {
|
|
uint32_t oldSizeInK = aHandle->FileSizeInK();
|
|
int64_t writeEnd = aOffset + bytesWritten;
|
|
|
|
if (aTruncate) {
|
|
rv = TruncFile(aHandle->mFD, writeEnd);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
aHandle->mFileSize = writeEnd;
|
|
} else {
|
|
if (aHandle->mFileSize < writeEnd) {
|
|
aHandle->mFileSize = writeEnd;
|
|
}
|
|
}
|
|
|
|
uint32_t newSizeInK = aHandle->FileSizeInK();
|
|
|
|
if (oldSizeInK != newSizeInK && !aHandle->IsDoomed() &&
|
|
!aHandle->IsSpecialFile()) {
|
|
CacheIndex::UpdateEntry(aHandle->Hash(), nullptr, nullptr, &newSizeInK);
|
|
|
|
if (oldSizeInK < newSizeInK) {
|
|
EvictIfOverLimitInternal();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bytesWritten != aCount) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Write was successful and this write validates the entry (i.e. metadata)
|
|
if (aValidate) {
|
|
aHandle->mInvalid = false;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::DoomFile(CacheFileHandle *aHandle,
|
|
CacheFileIOListener *aCallback)
|
|
{
|
|
LOG(("CacheFileIOManager::DoomFile() [handle=%p, listener=%p]",
|
|
aHandle, aCallback));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (aHandle->IsClosed() || !ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsRefPtr<DoomFileEvent> ev = new DoomFileEvent(aHandle, aCallback);
|
|
rv = ioMan->mIOThread->Dispatch(ev, aHandle->IsPriority()
|
|
? CacheIOThread::OPEN_PRIORITY
|
|
: CacheIOThread::OPEN);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::DoomFileInternal(CacheFileHandle *aHandle)
|
|
{
|
|
LOG(("CacheFileIOManager::DoomFileInternal() [handle=%p]", aHandle));
|
|
aHandle->Log();
|
|
|
|
nsresult rv;
|
|
|
|
if (aHandle->IsDoomed()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aHandle->mFileExists) {
|
|
// we need to move the current file to the doomed directory
|
|
if (aHandle->mFD) {
|
|
ReleaseNSPRHandleInternal(aHandle);
|
|
}
|
|
|
|
// find unused filename
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = GetDoomedFile(getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIFile> parentDir;
|
|
rv = file->GetParent(getter_AddRefs(parentDir));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsAutoCString leafName;
|
|
rv = file->GetNativeLeafName(leafName);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = aHandle->mFile->MoveToNative(parentDir, leafName);
|
|
if (NS_ERROR_FILE_NOT_FOUND == rv || NS_ERROR_FILE_TARGET_DOES_NOT_EXIST == rv) {
|
|
LOG((" file already removed under our hands"));
|
|
aHandle->mFileExists = false;
|
|
rv = NS_OK;
|
|
} else {
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
aHandle->mFile.swap(file);
|
|
}
|
|
}
|
|
|
|
if (!aHandle->IsSpecialFile()) {
|
|
CacheIndex::RemoveEntry(aHandle->Hash());
|
|
}
|
|
|
|
aHandle->mIsDoomed = true;
|
|
|
|
if (!aHandle->IsSpecialFile()) {
|
|
nsRefPtr<CacheStorageService> storageService = CacheStorageService::Self();
|
|
if (storageService) {
|
|
nsAutoCString idExtension, url;
|
|
nsCOMPtr<nsILoadContextInfo> info =
|
|
CacheFileUtils::ParseKey(aHandle->Key(), &idExtension, &url);
|
|
MOZ_ASSERT(info);
|
|
if (info) {
|
|
storageService->CacheFileDoomed(info, idExtension, url);
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::DoomFileByKey(const nsACString &aKey,
|
|
CacheFileIOListener *aCallback)
|
|
{
|
|
LOG(("CacheFileIOManager::DoomFileByKey() [key=%s, listener=%p]",
|
|
PromiseFlatCString(aKey).get(), aCallback));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (!ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsRefPtr<DoomFileByKeyEvent> ev = new DoomFileByKeyEvent(aKey, aCallback);
|
|
rv = ioMan->mIOThread->DispatchAfterPendingOpens(ev);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::DoomFileByKeyInternal(const SHA1Sum::Hash *aHash)
|
|
{
|
|
LOG(("CacheFileIOManager::DoomFileByKeyInternal() [hash=%08x%08x%08x%08x%08x]"
|
|
, LOGSHA1(aHash)));
|
|
|
|
MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
|
|
|
|
nsresult rv;
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (!mCacheDirectory) {
|
|
return NS_ERROR_FILE_INVALID_PATH;
|
|
}
|
|
|
|
// Find active handle
|
|
nsRefPtr<CacheFileHandle> handle;
|
|
mHandles.GetHandle(aHash, getter_AddRefs(handle));
|
|
|
|
if (handle) {
|
|
handle->Log();
|
|
|
|
return DoomFileInternal(handle);
|
|
}
|
|
|
|
// There is no handle for this file, delete the file if exists
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = GetFile(aHash, getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool exists;
|
|
rv = file->Exists(&exists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!exists) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
LOG(("CacheFileIOManager::DoomFileByKeyInternal() - Removing file from "
|
|
"disk"));
|
|
rv = file->Remove(false);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Cannot remove old entry from the disk");
|
|
LOG(("CacheFileIOManager::DoomFileByKeyInternal() - Removing file failed. "
|
|
"[rv=0x%08x]", rv));
|
|
}
|
|
|
|
CacheIndex::RemoveEntry(aHash);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::ReleaseNSPRHandle(CacheFileHandle *aHandle)
|
|
{
|
|
LOG(("CacheFileIOManager::ReleaseNSPRHandle() [handle=%p]", aHandle));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (aHandle->IsClosed() || !ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsRefPtr<ReleaseNSPRHandleEvent> ev = new ReleaseNSPRHandleEvent(aHandle);
|
|
rv = ioMan->mIOThread->Dispatch(ev, CacheIOThread::CLOSE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::ReleaseNSPRHandleInternal(CacheFileHandle *aHandle)
|
|
{
|
|
LOG(("CacheFileIOManager::ReleaseNSPRHandleInternal() [handle=%p]", aHandle));
|
|
|
|
MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
|
|
MOZ_ASSERT(aHandle->mFD);
|
|
|
|
DebugOnly<bool> found;
|
|
found = mHandlesByLastUsed.RemoveElement(aHandle);
|
|
MOZ_ASSERT(found);
|
|
|
|
PR_Close(aHandle->mFD);
|
|
aHandle->mFD = nullptr;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::TruncateSeekSetEOF(CacheFileHandle *aHandle,
|
|
int64_t aTruncatePos, int64_t aEOFPos,
|
|
CacheFileIOListener *aCallback)
|
|
{
|
|
LOG(("CacheFileIOManager::TruncateSeekSetEOF() [handle=%p, truncatePos=%lld, "
|
|
"EOFPos=%lld, listener=%p]", aHandle, aTruncatePos, aEOFPos, aCallback));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (aHandle->IsClosed() || !ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsRefPtr<TruncateSeekSetEOFEvent> ev = new TruncateSeekSetEOFEvent(
|
|
aHandle, aTruncatePos, aEOFPos,
|
|
aCallback);
|
|
rv = ioMan->mIOThread->Dispatch(ev, CacheIOThread::WRITE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
void CacheFileIOManager::GetCacheDirectory(nsIFile** result)
|
|
{
|
|
*result = nullptr;
|
|
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
if (!ioMan) {
|
|
return;
|
|
}
|
|
|
|
ioMan->mCacheDirectory->Clone(result);
|
|
}
|
|
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
|
|
// static
|
|
void CacheFileIOManager::GetProfilelessCacheDirectory(nsIFile** result)
|
|
{
|
|
*result = nullptr;
|
|
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
if (!ioMan || !ioMan->mCacheProfilelessDirectory) {
|
|
return;
|
|
}
|
|
|
|
ioMan->mCacheProfilelessDirectory->Clone(result);
|
|
}
|
|
|
|
#endif
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::GetEntryInfo(const SHA1Sum::Hash *aHash,
|
|
CacheStorageService::EntryInfoCallback *aCallback)
|
|
{
|
|
MOZ_ASSERT(CacheFileIOManager::IsOnIOThread());
|
|
|
|
nsresult rv;
|
|
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
if (!ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsAutoCString enhanceId;
|
|
nsAutoCString uriSpec;
|
|
|
|
nsRefPtr<CacheFileHandle> handle;
|
|
ioMan->mHandles.GetHandle(aHash, getter_AddRefs(handle));
|
|
if (handle) {
|
|
nsRefPtr<nsILoadContextInfo> info =
|
|
CacheFileUtils::ParseKey(handle->Key(), &enhanceId, &uriSpec);
|
|
|
|
MOZ_ASSERT(info);
|
|
if (!info) {
|
|
return NS_OK; // ignore
|
|
}
|
|
|
|
nsRefPtr<CacheStorageService> service = CacheStorageService::Self();
|
|
if (!service) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// Invokes OnCacheEntryInfo when an existing entry is found
|
|
if (service->GetCacheEntryInfo(info, enhanceId, uriSpec, aCallback)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// When we are here, there is no existing entry and we need
|
|
// to synchrnously load metadata from a disk file.
|
|
}
|
|
|
|
// Locate the actual file
|
|
nsCOMPtr<nsIFile> file;
|
|
ioMan->GetFile(aHash, getter_AddRefs(file));
|
|
|
|
// Read metadata from the file synchronously
|
|
nsRefPtr<CacheFileMetadata> metadata = new CacheFileMetadata();
|
|
rv = metadata->SyncReadMetadata(file);
|
|
if (NS_FAILED(rv)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Now get the context + enhance id + URL from the key.
|
|
nsAutoCString key;
|
|
metadata->GetKey(key);
|
|
|
|
nsRefPtr<nsILoadContextInfo> info =
|
|
CacheFileUtils::ParseKey(key, &enhanceId, &uriSpec);
|
|
MOZ_ASSERT(info);
|
|
if (!info) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Pick all data to pass to the callback.
|
|
int64_t dataSize = metadata->Offset();
|
|
uint32_t fetchCount;
|
|
if (NS_FAILED(metadata->GetFetchCount(&fetchCount))) {
|
|
fetchCount = 0;
|
|
}
|
|
uint32_t expirationTime;
|
|
if (NS_FAILED(metadata->GetExpirationTime(&expirationTime))) {
|
|
expirationTime = 0;
|
|
}
|
|
uint32_t lastModified;
|
|
if (NS_FAILED(metadata->GetLastModified(&lastModified))) {
|
|
lastModified = 0;
|
|
}
|
|
|
|
// Call directly on the callback.
|
|
aCallback->OnEntryInfo(uriSpec, enhanceId, dataSize, fetchCount,
|
|
lastModified, expirationTime);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::TruncateSeekSetEOFInternal(CacheFileHandle *aHandle,
|
|
int64_t aTruncatePos,
|
|
int64_t aEOFPos)
|
|
{
|
|
LOG(("CacheFileIOManager::TruncateSeekSetEOFInternal() [handle=%p, "
|
|
"truncatePos=%lld, EOFPos=%lld]", aHandle, aTruncatePos, aEOFPos));
|
|
|
|
nsresult rv;
|
|
|
|
if (!aHandle->mFileExists) {
|
|
rv = CreateFile(aHandle);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (!aHandle->mFD) {
|
|
rv = OpenNSPRHandle(aHandle);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
NSPRHandleUsed(aHandle);
|
|
}
|
|
|
|
// Check again, OpenNSPRHandle could figure out the file was gone.
|
|
if (!aHandle->mFileExists) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
// Check whether this operation would cause critical low disk space.
|
|
if (aHandle->mFileSize < aEOFPos) {
|
|
int64_t freeSpace = -1;
|
|
rv = mCacheDirectory->GetDiskSpaceAvailable(&freeSpace);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("CacheFileIOManager::TruncateSeekSetEOFInternal() - "
|
|
"GetDiskSpaceAvailable() failed! [rv=0x%08x]", rv));
|
|
} else {
|
|
uint32_t limit = CacheObserver::DiskFreeSpaceHardLimit();
|
|
if (freeSpace - aEOFPos + aHandle->mFileSize < limit) {
|
|
LOG(("CacheFileIOManager::TruncateSeekSetEOFInternal() - Low free space"
|
|
", refusing to write! [freeSpace=%lld, limit=%u]", freeSpace,
|
|
limit));
|
|
return NS_ERROR_FILE_DISK_FULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
// This operation always invalidates the entry
|
|
aHandle->mInvalid = true;
|
|
|
|
rv = TruncFile(aHandle->mFD, aTruncatePos);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (aTruncatePos != aEOFPos) {
|
|
rv = TruncFile(aHandle->mFD, aEOFPos);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
uint32_t oldSizeInK = aHandle->FileSizeInK();
|
|
aHandle->mFileSize = aEOFPos;
|
|
uint32_t newSizeInK = aHandle->FileSizeInK();
|
|
|
|
if (oldSizeInK != newSizeInK && !aHandle->IsDoomed() &&
|
|
!aHandle->IsSpecialFile()) {
|
|
CacheIndex::UpdateEntry(aHandle->Hash(), nullptr, nullptr, &newSizeInK);
|
|
|
|
if (oldSizeInK < newSizeInK) {
|
|
EvictIfOverLimitInternal();
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::RenameFile(CacheFileHandle *aHandle,
|
|
const nsACString &aNewName,
|
|
CacheFileIOListener *aCallback)
|
|
{
|
|
LOG(("CacheFileIOManager::RenameFile() [handle=%p, newName=%s, listener=%p]",
|
|
aHandle, PromiseFlatCString(aNewName).get(), aCallback));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (aHandle->IsClosed() || !ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (!aHandle->IsSpecialFile()) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsRefPtr<RenameFileEvent> ev = new RenameFileEvent(aHandle, aNewName,
|
|
aCallback);
|
|
rv = ioMan->mIOThread->Dispatch(ev, CacheIOThread::WRITE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::RenameFileInternal(CacheFileHandle *aHandle,
|
|
const nsACString &aNewName)
|
|
{
|
|
LOG(("CacheFileIOManager::RenameFileInternal() [handle=%p, newName=%s]",
|
|
aHandle, PromiseFlatCString(aNewName).get()));
|
|
|
|
nsresult rv;
|
|
|
|
MOZ_ASSERT(aHandle->IsSpecialFile());
|
|
|
|
if (aHandle->IsDoomed()) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
// Doom old handle if it exists and is not doomed
|
|
for (uint32_t i = 0 ; i < mSpecialHandles.Length() ; i++) {
|
|
if (!mSpecialHandles[i]->IsDoomed() &&
|
|
mSpecialHandles[i]->Key() == aNewName) {
|
|
MOZ_ASSERT(aHandle != mSpecialHandles[i]);
|
|
rv = DoomFileInternal(mSpecialHandles[i]);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
break;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = GetSpecialFile(aNewName, getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool exists;
|
|
rv = file->Exists(&exists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (exists) {
|
|
LOG(("CacheFileIOManager::RenameFileInternal() - Removing old file from "
|
|
"disk"));
|
|
rv = file->Remove(false);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Cannot remove file from the disk");
|
|
LOG(("CacheFileIOManager::RenameFileInternal() - Removing old file failed"
|
|
". [rv=0x%08x]", rv));
|
|
}
|
|
}
|
|
|
|
if (!aHandle->FileExists()) {
|
|
aHandle->mKey = aNewName;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aHandle->mFD) {
|
|
ReleaseNSPRHandleInternal(aHandle);
|
|
}
|
|
|
|
rv = aHandle->mFile->MoveToNative(nullptr, aNewName);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
aHandle->mKey = aNewName;
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::EvictIfOverLimit()
|
|
{
|
|
LOG(("CacheFileIOManager::EvictIfOverLimit()"));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (!ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> ev;
|
|
ev = NS_NewRunnableMethod(ioMan,
|
|
&CacheFileIOManager::EvictIfOverLimitInternal);
|
|
|
|
rv = ioMan->mIOThread->Dispatch(ev, CacheIOThread::EVICT);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::EvictIfOverLimitInternal()
|
|
{
|
|
LOG(("CacheFileIOManager::EvictIfOverLimitInternal()"));
|
|
|
|
nsresult rv;
|
|
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (mOverLimitEvicting) {
|
|
LOG(("CacheFileIOManager::EvictIfOverLimitInternal() - Eviction already "
|
|
"running."));
|
|
return NS_OK;
|
|
}
|
|
|
|
int64_t freeSpace;
|
|
rv = mCacheDirectory->GetDiskSpaceAvailable(&freeSpace);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
freeSpace = -1;
|
|
|
|
// Do not change smart size.
|
|
LOG(("CacheFileIOManager::EvictIfOverLimitInternal() - "
|
|
"GetDiskSpaceAvailable() failed! [rv=0x%08x]", rv));
|
|
} else {
|
|
UpdateSmartCacheSize(freeSpace);
|
|
}
|
|
|
|
uint32_t cacheUsage;
|
|
rv = CacheIndex::GetCacheSize(&cacheUsage);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t cacheLimit = CacheObserver::DiskCacheCapacity() >> 10;
|
|
uint32_t freeSpaceLimit = CacheObserver::DiskFreeSpaceSoftLimit();
|
|
|
|
if (cacheUsage <= cacheLimit &&
|
|
(freeSpace == -1 || freeSpace >= freeSpaceLimit)) {
|
|
LOG(("CacheFileIOManager::EvictIfOverLimitInternal() - Cache size and free "
|
|
"space in limits. [cacheSize=%ukB, cacheSizeLimit=%ukB, "
|
|
"freeSpace=%lld, freeSpaceLimit=%u]", cacheUsage, cacheLimit,
|
|
freeSpace, freeSpaceLimit));
|
|
return NS_OK;
|
|
}
|
|
|
|
LOG(("CacheFileIOManager::EvictIfOverLimitInternal() - Cache size exceeded "
|
|
"limit. Starting overlimit eviction. [cacheSize=%u, limit=%u]",
|
|
cacheUsage, cacheLimit));
|
|
|
|
nsCOMPtr<nsIRunnable> ev;
|
|
ev = NS_NewRunnableMethod(this,
|
|
&CacheFileIOManager::OverLimitEvictionInternal);
|
|
|
|
rv = mIOThread->Dispatch(ev, CacheIOThread::EVICT);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mOverLimitEvicting = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::OverLimitEvictionInternal()
|
|
{
|
|
LOG(("CacheFileIOManager::OverLimitEvictionInternal()"));
|
|
|
|
nsresult rv;
|
|
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
// mOverLimitEvicting is accessed only on IO thread, so we can set it to false
|
|
// here and set it to true again once we dispatch another event that will
|
|
// continue with the eviction. The reason why we do so is that we can fail
|
|
// early anywhere in this method and the variable will contain a correct
|
|
// value. Otherwise we would need to set it to false on every failing place.
|
|
mOverLimitEvicting = false;
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
while (true) {
|
|
int64_t freeSpace = -1;
|
|
rv = mCacheDirectory->GetDiskSpaceAvailable(&freeSpace);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
// Do not change smart size.
|
|
LOG(("CacheFileIOManager::EvictIfOverLimitInternal() - "
|
|
"GetDiskSpaceAvailable() failed! [rv=0x%08x]", rv));
|
|
} else {
|
|
UpdateSmartCacheSize(freeSpace);
|
|
}
|
|
|
|
uint32_t cacheUsage;
|
|
rv = CacheIndex::GetCacheSize(&cacheUsage);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t cacheLimit = CacheObserver::DiskCacheCapacity() >> 10;
|
|
uint32_t freeSpaceLimit = CacheObserver::DiskFreeSpaceSoftLimit();
|
|
|
|
if (cacheUsage > cacheLimit) {
|
|
LOG(("CacheFileIOManager::OverLimitEvictionInternal() - Cache size over "
|
|
"limit. [cacheSize=%u, limit=%u]", cacheUsage, cacheLimit));
|
|
} else if (freeSpace != 1 && freeSpace < freeSpaceLimit) {
|
|
LOG(("CacheFileIOManager::OverLimitEvictionInternal() - Free space under "
|
|
"limit. [freeSpace=%lld, freeSpaceLimit=%u]", freeSpace,
|
|
freeSpaceLimit));
|
|
} else {
|
|
LOG(("CacheFileIOManager::OverLimitEvictionInternal() - Cache size and "
|
|
"free space in limits. [cacheSize=%ukB, cacheSizeLimit=%ukB, "
|
|
"freeSpace=%lld, freeSpaceLimit=%u]", cacheUsage, cacheLimit,
|
|
freeSpace, freeSpaceLimit));
|
|
return NS_OK;
|
|
}
|
|
|
|
if (CacheIOThread::YieldAndRerun()) {
|
|
LOG(("CacheFileIOManager::OverLimitEvictionInternal() - Breaking loop "
|
|
"for higher level events."));
|
|
mOverLimitEvicting = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
SHA1Sum::Hash hash;
|
|
uint32_t cnt;
|
|
static uint32_t consecutiveFailures = 0;
|
|
rv = CacheIndex::GetEntryForEviction(false, &hash, &cnt);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = DoomFileByKeyInternal(&hash);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
consecutiveFailures = 0;
|
|
} else if (rv == NS_ERROR_NOT_AVAILABLE) {
|
|
LOG(("CacheFileIOManager::OverLimitEvictionInternal() - "
|
|
"DoomFileByKeyInternal() failed. [rv=0x%08x]", rv));
|
|
// TODO index is outdated, start update
|
|
|
|
// Make sure index won't return the same entry again
|
|
CacheIndex::RemoveEntry(&hash);
|
|
consecutiveFailures = 0;
|
|
} else {
|
|
// This shouldn't normally happen, but the eviction must not fail
|
|
// completely if we ever encounter this problem.
|
|
NS_WARNING("CacheFileIOManager::OverLimitEvictionInternal() - Unexpected "
|
|
"failure of DoomFileByKeyInternal()");
|
|
|
|
LOG(("CacheFileIOManager::OverLimitEvictionInternal() - "
|
|
"DoomFileByKeyInternal() failed. [rv=0x%08x]", rv));
|
|
|
|
// Normally, CacheIndex::UpdateEntry() is called only to update newly
|
|
// created/opened entries which are always fresh and UpdateEntry() expects
|
|
// and checks this flag. The way we use UpdateEntry() here is a kind of
|
|
// hack and we must make sure the flag is set by calling
|
|
// EnsureEntryExists().
|
|
rv = CacheIndex::EnsureEntryExists(&hash);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Move the entry at the end of both lists to make sure we won't end up
|
|
// failing on one entry forever.
|
|
uint32_t frecency = 0;
|
|
uint32_t expTime = nsICacheEntry::NO_EXPIRATION_TIME;
|
|
rv = CacheIndex::UpdateEntry(&hash, &frecency, &expTime, nullptr);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
consecutiveFailures++;
|
|
if (consecutiveFailures >= cnt) {
|
|
// This doesn't necessarily mean that we've tried to doom every entry
|
|
// but we've reached a sane number of tries. It is likely that another
|
|
// eviction will start soon. And as said earlier, this normally doesn't
|
|
// happen at all.
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_NOTREACHED("We should never get here");
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::EvictAll()
|
|
{
|
|
LOG(("CacheFileIOManager::EvictAll()"));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (!ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> ev;
|
|
ev = NS_NewRunnableMethod(ioMan, &CacheFileIOManager::EvictAllInternal);
|
|
|
|
rv = ioMan->mIOThread->DispatchAfterPendingOpens(ev);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
namespace {
|
|
|
|
class EvictionNotifierRunnable : public nsRunnable
|
|
{
|
|
public:
|
|
NS_DECL_NSIRUNNABLE
|
|
};
|
|
|
|
NS_IMETHODIMP
|
|
EvictionNotifierRunnable::Run()
|
|
{
|
|
nsCOMPtr<nsIObserverService> obsSvc = mozilla::services::GetObserverService();
|
|
if (obsSvc) {
|
|
obsSvc->NotifyObservers(nullptr, "cacheservice:empty-cache", nullptr);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
nsresult
|
|
CacheFileIOManager::EvictAllInternal()
|
|
{
|
|
LOG(("CacheFileIOManager::EvictAllInternal()"));
|
|
|
|
nsresult rv;
|
|
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
nsRefPtr<EvictionNotifierRunnable> r = new EvictionNotifierRunnable();
|
|
|
|
if (!mCacheDirectory) {
|
|
// This is a kind of hack. Somebody called EvictAll() without a profile.
|
|
// This happens in xpcshell tests that use cache without profile. We need
|
|
// to notify observers in this case since the tests are waiting for it.
|
|
NS_DispatchToMainThread(r);
|
|
return NS_ERROR_FILE_INVALID_PATH;
|
|
}
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (!mTreeCreated) {
|
|
rv = CreateCacheTree();
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Doom all active handles
|
|
nsTArray<nsRefPtr<CacheFileHandle> > handles;
|
|
mHandles.GetActiveHandles(&handles);
|
|
|
|
for (uint32_t i = 0; i < handles.Length(); ++i) {
|
|
rv = DoomFileInternal(handles[i]);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("CacheFileIOManager::EvictAllInternal() - Cannot doom handle "
|
|
"[handle=%p]", handles[i].get()));
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = mCacheDirectory->Clone(getter_AddRefs(file));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
rv = file->AppendNative(NS_LITERAL_CSTRING(ENTRIES_DIR));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
// Trash current entries directory
|
|
rv = TrashDirectory(file);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
// Files are now inaccessible in entries directory, notify observers.
|
|
NS_DispatchToMainThread(r);
|
|
|
|
// Create a new empty entries directory
|
|
rv = CheckAndCreateDir(mCacheDirectory, ENTRIES_DIR, false);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
CacheIndex::RemoveAll();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::EvictByContext(nsILoadContextInfo *aLoadContextInfo)
|
|
{
|
|
LOG(("CacheFileIOManager::EvictByContext() [loadContextInfo=%p]",
|
|
aLoadContextInfo));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (!ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> ev;
|
|
ev = NS_NewRunnableMethodWithArg<nsCOMPtr<nsILoadContextInfo> >
|
|
(ioMan, &CacheFileIOManager::EvictByContextInternal, aLoadContextInfo);
|
|
|
|
rv = ioMan->mIOThread->DispatchAfterPendingOpens(ev);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::EvictByContextInternal(nsILoadContextInfo *aLoadContextInfo)
|
|
{
|
|
LOG(("CacheFileIOManager::EvictByContextInternal() [loadContextInfo=%p, "
|
|
"anonymous=%u, inBrowser=%u, appId=%u]", aLoadContextInfo,
|
|
aLoadContextInfo->IsAnonymous(), aLoadContextInfo->IsInBrowserElement(),
|
|
aLoadContextInfo->AppId()));
|
|
|
|
nsresult rv;
|
|
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
MOZ_ASSERT(!aLoadContextInfo->IsPrivate());
|
|
if (aLoadContextInfo->IsPrivate()) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
if (!mCacheDirectory) {
|
|
return NS_ERROR_FILE_INVALID_PATH;
|
|
}
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (!mTreeCreated) {
|
|
rv = CreateCacheTree();
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// Doom all active handles that matches the load context
|
|
nsTArray<nsRefPtr<CacheFileHandle> > handles;
|
|
mHandles.GetActiveHandles(&handles);
|
|
|
|
for (uint32_t i = 0; i < handles.Length(); ++i) {
|
|
bool equals;
|
|
rv = CacheFileUtils::KeyMatchesLoadContextInfo(handles[i]->Key(),
|
|
aLoadContextInfo,
|
|
&equals);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("CacheFileIOManager::EvictByContextInternal() - Cannot parse key in "
|
|
"handle! [handle=%p, key=%s]", handles[i].get(),
|
|
handles[i]->Key().get()));
|
|
MOZ_CRASH("Unexpected error!");
|
|
}
|
|
|
|
if (equals) {
|
|
rv = DoomFileInternal(handles[i]);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("CacheFileIOManager::EvictByContextInternal() - Cannot doom handle"
|
|
" [handle=%p]", handles[i].get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mContextEvictor) {
|
|
mContextEvictor = new CacheFileContextEvictor();
|
|
mContextEvictor->Init(mCacheDirectory);
|
|
}
|
|
|
|
mContextEvictor->AddContext(aLoadContextInfo);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::CacheIndexStateChanged()
|
|
{
|
|
LOG(("CacheFileIOManager::CacheIndexStateChanged()"));
|
|
|
|
nsresult rv;
|
|
|
|
// CacheFileIOManager lives longer than CacheIndex so gInstance must be
|
|
// non-null here.
|
|
MOZ_ASSERT(gInstance);
|
|
|
|
// We have to re-distatch even if we are on IO thread to prevent reentering
|
|
// the lock in CacheIndex
|
|
nsCOMPtr<nsIRunnable> ev;
|
|
ev = NS_NewRunnableMethod(
|
|
gInstance, &CacheFileIOManager::CacheIndexStateChangedInternal);
|
|
|
|
nsCOMPtr<nsIEventTarget> ioTarget = IOTarget();
|
|
MOZ_ASSERT(ioTarget);
|
|
|
|
rv = ioTarget->Dispatch(ev, nsIEventTarget::DISPATCH_NORMAL);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::CacheIndexStateChangedInternal()
|
|
{
|
|
if (mShuttingDown) {
|
|
// ignore notification during shutdown
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mContextEvictor) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mContextEvictor->CacheIndexStateChanged();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::TrashDirectory(nsIFile *aFile)
|
|
{
|
|
nsAutoCString path;
|
|
aFile->GetNativePath(path);
|
|
LOG(("CacheFileIOManager::TrashDirectory() [file=%s]", path.get()));
|
|
|
|
nsresult rv;
|
|
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
MOZ_ASSERT(mCacheDirectory);
|
|
|
|
// When the directory is empty, it is cheaper to remove it directly instead of
|
|
// using the trash mechanism.
|
|
bool isEmpty;
|
|
rv = IsEmptyDirectory(aFile, &isEmpty);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (isEmpty) {
|
|
rv = aFile->Remove(false);
|
|
LOG(("CacheFileIOManager::TrashDirectory() - Directory removed [rv=0x%08x]",
|
|
rv));
|
|
return rv;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
nsCOMPtr<nsIFile> dirCheck;
|
|
rv = aFile->GetParent(getter_AddRefs(dirCheck));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool equals = false;
|
|
rv = dirCheck->Equals(mCacheDirectory, &equals);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
MOZ_ASSERT(equals);
|
|
#endif
|
|
|
|
nsCOMPtr<nsIFile> dir, trash;
|
|
nsAutoCString leaf;
|
|
|
|
rv = aFile->Clone(getter_AddRefs(dir));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = aFile->Clone(getter_AddRefs(trash));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
srand(static_cast<unsigned>(PR_Now()));
|
|
while (true) {
|
|
leaf = TRASH_DIR;
|
|
leaf.AppendInt(rand());
|
|
rv = trash->SetNativeLeafName(leaf);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool exists;
|
|
if (NS_SUCCEEDED(trash->Exists(&exists)) && !exists) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
LOG(("CacheFileIOManager::TrashDirectory() - Renaming directory [leaf=%s]",
|
|
leaf.get()));
|
|
|
|
rv = dir->MoveToNative(nullptr, leaf);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
StartRemovingTrash();
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
void
|
|
CacheFileIOManager::OnTrashTimer(nsITimer *aTimer, void *aClosure)
|
|
{
|
|
LOG(("CacheFileIOManager::OnTrashTimer() [timer=%p, closure=%p]", aTimer,
|
|
aClosure));
|
|
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (!ioMan) {
|
|
return;
|
|
}
|
|
|
|
ioMan->mTrashTimer = nullptr;
|
|
ioMan->StartRemovingTrash();
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::StartRemovingTrash()
|
|
{
|
|
LOG(("CacheFileIOManager::StartRemovingTrash()"));
|
|
|
|
nsresult rv;
|
|
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (!mCacheDirectory) {
|
|
return NS_ERROR_FILE_INVALID_PATH;
|
|
}
|
|
|
|
if (mTrashTimer) {
|
|
LOG(("CacheFileIOManager::StartRemovingTrash() - Trash timer exists."));
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mRemovingTrashDirs) {
|
|
LOG(("CacheFileIOManager::StartRemovingTrash() - Trash removing in "
|
|
"progress."));
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t elapsed = (TimeStamp::NowLoRes() - mStartTime).ToMilliseconds();
|
|
if (elapsed < kRemoveTrashStartDelay) {
|
|
nsCOMPtr<nsITimer> timer = do_CreateInstance("@mozilla.org/timer;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIEventTarget> ioTarget = IOTarget();
|
|
MOZ_ASSERT(ioTarget);
|
|
|
|
rv = timer->SetTarget(ioTarget);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = timer->InitWithFuncCallback(CacheFileIOManager::OnTrashTimer, nullptr,
|
|
kRemoveTrashStartDelay - elapsed,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mTrashTimer.swap(timer);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> ev;
|
|
ev = NS_NewRunnableMethod(this,
|
|
&CacheFileIOManager::RemoveTrashInternal);
|
|
|
|
rv = mIOThread->Dispatch(ev, CacheIOThread::EVICT);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mRemovingTrashDirs = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::RemoveTrashInternal()
|
|
{
|
|
LOG(("CacheFileIOManager::RemoveTrashInternal()"));
|
|
|
|
nsresult rv;
|
|
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
if (mShuttingDown) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
MOZ_ASSERT(!mTrashTimer);
|
|
MOZ_ASSERT(mRemovingTrashDirs);
|
|
|
|
if (!mTreeCreated) {
|
|
rv = CreateCacheTree();
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
// mRemovingTrashDirs is accessed only on IO thread, so we can drop the flag
|
|
// here and set it again once we dispatch a continuation event. By doing so,
|
|
// we don't have to drop the flag on any possible early return.
|
|
mRemovingTrashDirs = false;
|
|
|
|
while (true) {
|
|
if (CacheIOThread::YieldAndRerun()) {
|
|
LOG(("CacheFileIOManager::RemoveTrashInternal() - Breaking loop for "
|
|
"higher level events."));
|
|
mRemovingTrashDirs = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
// Find some trash directory
|
|
if (!mTrashDir) {
|
|
MOZ_ASSERT(!mTrashDirEnumerator);
|
|
|
|
rv = FindTrashDirToRemove();
|
|
if (rv == NS_ERROR_NOT_AVAILABLE) {
|
|
LOG(("CacheFileIOManager::RemoveTrashInternal() - No trash directory "
|
|
"found."));
|
|
return NS_OK;
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsISimpleEnumerator> enumerator;
|
|
rv = mTrashDir->GetDirectoryEntries(getter_AddRefs(enumerator));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mTrashDirEnumerator = do_QueryInterface(enumerator, &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
continue; // check elapsed time
|
|
}
|
|
|
|
// We null out mTrashDirEnumerator once we remove all files in the
|
|
// directory, so remove the trash directory if we don't have enumerator.
|
|
if (!mTrashDirEnumerator) {
|
|
rv = mTrashDir->Remove(false);
|
|
if (NS_FAILED(rv)) {
|
|
// There is no reason why removing an empty directory should fail, but
|
|
// if it does, we should continue and try to remove all other trash
|
|
// directories.
|
|
nsAutoCString leafName;
|
|
mTrashDir->GetNativeLeafName(leafName);
|
|
mFailedTrashDirs.AppendElement(leafName);
|
|
LOG(("CacheFileIOManager::RemoveTrashInternal() - Cannot remove "
|
|
"trashdir. [name=%s]", leafName.get()));
|
|
}
|
|
|
|
mTrashDir = nullptr;
|
|
continue; // check elapsed time
|
|
}
|
|
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = mTrashDirEnumerator->GetNextFile(getter_AddRefs(file));
|
|
if (!file) {
|
|
mTrashDirEnumerator->Close();
|
|
mTrashDirEnumerator = nullptr;
|
|
continue; // check elapsed time
|
|
} else {
|
|
bool isDir = false;
|
|
file->IsDirectory(&isDir);
|
|
if (isDir) {
|
|
NS_WARNING("Found a directory in a trash directory! It will be removed "
|
|
"recursively, but this can block IO thread for a while!");
|
|
if (LOG_ENABLED()) {
|
|
nsAutoCString path;
|
|
file->GetNativePath(path);
|
|
LOG(("CacheFileIOManager::RemoveTrashInternal() - Found a directory in a trash "
|
|
"directory! It will be removed recursively, but this can block IO "
|
|
"thread for a while! [file=%s]", path.get()));
|
|
}
|
|
}
|
|
file->Remove(isDir);
|
|
}
|
|
}
|
|
|
|
NS_NOTREACHED("We should never get here");
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::FindTrashDirToRemove()
|
|
{
|
|
LOG(("CacheFileIOManager::FindTrashDirToRemove()"));
|
|
|
|
nsresult rv;
|
|
|
|
// We call this method on the main thread during shutdown when user wants to
|
|
// remove all cache files.
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread() || mShuttingDown);
|
|
|
|
nsCOMPtr<nsISimpleEnumerator> iter;
|
|
rv = mCacheDirectory->GetDirectoryEntries(getter_AddRefs(iter));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool more;
|
|
nsCOMPtr<nsISupports> elem;
|
|
|
|
while (NS_SUCCEEDED(iter->HasMoreElements(&more)) && more) {
|
|
rv = iter->GetNext(getter_AddRefs(elem));
|
|
if (NS_FAILED(rv)) {
|
|
continue;
|
|
}
|
|
|
|
nsCOMPtr<nsIFile> file = do_QueryInterface(elem);
|
|
if (!file) {
|
|
continue;
|
|
}
|
|
|
|
bool isDir = false;
|
|
file->IsDirectory(&isDir);
|
|
if (!isDir) {
|
|
continue;
|
|
}
|
|
|
|
nsAutoCString leafName;
|
|
rv = file->GetNativeLeafName(leafName);
|
|
if (NS_FAILED(rv)) {
|
|
continue;
|
|
}
|
|
|
|
if (leafName.Length() < strlen(TRASH_DIR)) {
|
|
continue;
|
|
}
|
|
|
|
if (!StringBeginsWith(leafName, NS_LITERAL_CSTRING(TRASH_DIR))) {
|
|
continue;
|
|
}
|
|
|
|
if (mFailedTrashDirs.Contains(leafName)) {
|
|
continue;
|
|
}
|
|
|
|
LOG(("CacheFileIOManager::FindTrashDirToRemove() - Returning directory %s",
|
|
leafName.get()));
|
|
|
|
mTrashDir = file;
|
|
return NS_OK;
|
|
}
|
|
|
|
// When we're here we've tried to delete all trash directories. Clear
|
|
// mFailedTrashDirs so we will try to delete them again when we start removing
|
|
// trash directories next time.
|
|
mFailedTrashDirs.Clear();
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::InitIndexEntry(CacheFileHandle *aHandle,
|
|
uint32_t aAppId,
|
|
bool aAnonymous,
|
|
bool aInBrowser)
|
|
{
|
|
LOG(("CacheFileIOManager::InitIndexEntry() [handle=%p, appId=%u, anonymous=%d"
|
|
", inBrowser=%d]", aHandle, aAppId, aAnonymous, aInBrowser));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (aHandle->IsClosed() || !ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (aHandle->IsSpecialFile()) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsRefPtr<InitIndexEntryEvent> ev =
|
|
new InitIndexEntryEvent(aHandle, aAppId, aAnonymous, aInBrowser);
|
|
rv = ioMan->mIOThread->Dispatch(ev, CacheIOThread::WRITE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::UpdateIndexEntry(CacheFileHandle *aHandle,
|
|
const uint32_t *aFrecency,
|
|
const uint32_t *aExpirationTime)
|
|
{
|
|
LOG(("CacheFileIOManager::UpdateIndexEntry() [handle=%p, frecency=%s, "
|
|
"expirationTime=%s]", aHandle,
|
|
aFrecency ? nsPrintfCString("%u", *aFrecency).get() : "",
|
|
aExpirationTime ? nsPrintfCString("%u", *aExpirationTime).get() : ""));
|
|
|
|
nsresult rv;
|
|
nsRefPtr<CacheFileIOManager> ioMan = gInstance;
|
|
|
|
if (aHandle->IsClosed() || !ioMan) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (aHandle->IsSpecialFile()) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsRefPtr<UpdateIndexEntryEvent> ev =
|
|
new UpdateIndexEntryEvent(aHandle, aFrecency, aExpirationTime);
|
|
rv = ioMan->mIOThread->Dispatch(ev, CacheIOThread::WRITE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::CreateFile(CacheFileHandle *aHandle)
|
|
{
|
|
MOZ_ASSERT(!aHandle->mFD);
|
|
MOZ_ASSERT(aHandle->mFile);
|
|
|
|
nsresult rv;
|
|
|
|
if (aHandle->IsDoomed()) {
|
|
nsCOMPtr<nsIFile> file;
|
|
|
|
rv = GetDoomedFile(getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
aHandle->mFile.swap(file);
|
|
} else {
|
|
bool exists;
|
|
if (NS_SUCCEEDED(aHandle->mFile->Exists(&exists)) && exists) {
|
|
NS_WARNING("Found a file that should not exist!");
|
|
}
|
|
}
|
|
|
|
rv = OpenNSPRHandle(aHandle, true);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
aHandle->mFileSize = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
void
|
|
CacheFileIOManager::HashToStr(const SHA1Sum::Hash *aHash, nsACString &_retval)
|
|
{
|
|
_retval.Truncate();
|
|
const char hexChars[] = {'0', '1', '2', '3', '4', '5', '6', '7',
|
|
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
|
|
for (uint32_t i=0 ; i<sizeof(SHA1Sum::Hash) ; i++) {
|
|
_retval.Append(hexChars[(*aHash)[i] >> 4]);
|
|
_retval.Append(hexChars[(*aHash)[i] & 0xF]);
|
|
}
|
|
}
|
|
|
|
// static
|
|
nsresult
|
|
CacheFileIOManager::StrToHash(const nsACString &aHash, SHA1Sum::Hash *_retval)
|
|
{
|
|
if (aHash.Length() != 2*sizeof(SHA1Sum::Hash)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
for (uint32_t i=0 ; i<aHash.Length() ; i++) {
|
|
uint8_t value;
|
|
|
|
if (aHash[i] >= '0' && aHash[i] <= '9') {
|
|
value = aHash[i] - '0';
|
|
} else if (aHash[i] >= 'A' && aHash[i] <= 'F') {
|
|
value = aHash[i] - 'A' + 10;
|
|
} else if (aHash[i] >= 'a' && aHash[i] <= 'f') {
|
|
value = aHash[i] - 'a' + 10;
|
|
} else {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
if (i%2 == 0) {
|
|
(reinterpret_cast<uint8_t *>(_retval))[i/2] = value << 4;
|
|
} else {
|
|
(reinterpret_cast<uint8_t *>(_retval))[i/2] += value;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::GetFile(const SHA1Sum::Hash *aHash, nsIFile **_retval)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = mCacheDirectory->Clone(getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = file->AppendNative(NS_LITERAL_CSTRING(ENTRIES_DIR));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsAutoCString leafName;
|
|
HashToStr(aHash, leafName);
|
|
|
|
rv = file->AppendNative(leafName);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
file.swap(*_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::GetSpecialFile(const nsACString &aKey, nsIFile **_retval)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = mCacheDirectory->Clone(getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = file->AppendNative(aKey);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
file.swap(*_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::GetDoomedFile(nsIFile **_retval)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = mCacheDirectory->Clone(getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = file->AppendNative(NS_LITERAL_CSTRING(DOOMED_DIR));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = file->AppendNative(NS_LITERAL_CSTRING("dummyleaf"));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
srand(static_cast<unsigned>(PR_Now()));
|
|
nsAutoCString leafName;
|
|
uint32_t iter=0;
|
|
while (true) {
|
|
iter++;
|
|
leafName.AppendInt(rand());
|
|
rv = file->SetNativeLeafName(leafName);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool exists;
|
|
if (NS_SUCCEEDED(file->Exists(&exists)) && !exists) {
|
|
break;
|
|
}
|
|
|
|
leafName.Truncate();
|
|
}
|
|
|
|
// Telemetry::Accumulate(Telemetry::DISK_CACHE_GETDOOMEDFILE_ITERATIONS, iter);
|
|
|
|
file.swap(*_retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::IsEmptyDirectory(nsIFile *aFile, bool *_retval)
|
|
{
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsISimpleEnumerator> enumerator;
|
|
rv = aFile->GetDirectoryEntries(getter_AddRefs(enumerator));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool hasMoreElements = false;
|
|
rv = enumerator->HasMoreElements(&hasMoreElements);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
*_retval = !hasMoreElements;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::CheckAndCreateDir(nsIFile *aFile, const char *aDir,
|
|
bool aEnsureEmptyDir)
|
|
{
|
|
nsresult rv;
|
|
|
|
nsCOMPtr<nsIFile> file;
|
|
if (!aDir) {
|
|
file = aFile;
|
|
} else {
|
|
nsAutoCString dir(aDir);
|
|
rv = aFile->Clone(getter_AddRefs(file));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = file->AppendNative(dir);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
bool exists = false;
|
|
rv = file->Exists(&exists);
|
|
if (NS_SUCCEEDED(rv) && exists) {
|
|
bool isDirectory = false;
|
|
rv = file->IsDirectory(&isDirectory);
|
|
if (NS_FAILED(rv) || !isDirectory) {
|
|
// Try to remove the file
|
|
rv = file->Remove(false);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
exists = false;
|
|
}
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (aEnsureEmptyDir && NS_SUCCEEDED(rv) && exists) {
|
|
bool isEmpty;
|
|
rv = IsEmptyDirectory(file, &isEmpty);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!isEmpty) {
|
|
rv = TrashDirectory(file);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
exists = false;
|
|
}
|
|
}
|
|
|
|
if (NS_SUCCEEDED(rv) && !exists) {
|
|
rv = file->Create(nsIFile::DIRECTORY_TYPE, 0700);
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Cannot create directory");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::CreateCacheTree()
|
|
{
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
MOZ_ASSERT(!mTreeCreated);
|
|
|
|
if (!mCacheDirectory) {
|
|
return NS_ERROR_FILE_INVALID_PATH;
|
|
}
|
|
|
|
nsresult rv;
|
|
|
|
// ensure parent directory exists
|
|
nsCOMPtr<nsIFile> parentDir;
|
|
rv = mCacheDirectory->GetParent(getter_AddRefs(parentDir));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = CheckAndCreateDir(parentDir, nullptr, false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// ensure cache directory exists
|
|
rv = CheckAndCreateDir(mCacheDirectory, nullptr, false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// ensure entries directory exists
|
|
rv = CheckAndCreateDir(mCacheDirectory, ENTRIES_DIR, false);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// ensure doomed directory exists
|
|
rv = CheckAndCreateDir(mCacheDirectory, DOOMED_DIR, true);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mTreeCreated = true;
|
|
|
|
if (!mContextEvictor) {
|
|
nsRefPtr<CacheFileContextEvictor> contextEvictor;
|
|
contextEvictor = new CacheFileContextEvictor();
|
|
|
|
// Init() method will try to load unfinished contexts from the disk. Store
|
|
// the evictor as a member only when there is some unfinished job.
|
|
contextEvictor->Init(mCacheDirectory);
|
|
if (contextEvictor->ContextsCount()) {
|
|
contextEvictor.swap(mContextEvictor);
|
|
}
|
|
}
|
|
|
|
StartRemovingTrash();
|
|
|
|
if (!CacheObserver::CacheFSReported()) {
|
|
uint32_t fsType = 4; // Other OS
|
|
|
|
#ifdef XP_WIN
|
|
nsAutoString target;
|
|
nsresult rv = mCacheDirectory->GetTarget(target);
|
|
if (NS_FAILED(rv)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
wchar_t volume_path[MAX_PATH + 1] = { 0 };
|
|
if (!::GetVolumePathNameW(target.get(),
|
|
volume_path,
|
|
mozilla::ArrayLength(volume_path))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
wchar_t fsName[6] = { 0 };
|
|
if (!::GetVolumeInformationW(volume_path, nullptr, 0, nullptr, nullptr,
|
|
nullptr, fsName,
|
|
mozilla::ArrayLength(fsName))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (wcscmp(fsName, L"NTFS") == 0) {
|
|
fsType = 0;
|
|
} else if (wcscmp(fsName, L"FAT32") == 0) {
|
|
fsType = 1;
|
|
} else if (wcscmp(fsName, L"FAT") == 0) {
|
|
fsType = 2;
|
|
} else {
|
|
fsType = 3;
|
|
}
|
|
#endif
|
|
|
|
Telemetry::Accumulate(Telemetry::NETWORK_CACHE_FS_TYPE, fsType);
|
|
CacheObserver::SetCacheFSReported();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::OpenNSPRHandle(CacheFileHandle *aHandle, bool aCreate)
|
|
{
|
|
MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
|
|
MOZ_ASSERT(!aHandle->mFD);
|
|
MOZ_ASSERT(mHandlesByLastUsed.IndexOf(aHandle) == mHandlesByLastUsed.NoIndex);
|
|
MOZ_ASSERT(mHandlesByLastUsed.Length() <= kOpenHandlesLimit);
|
|
MOZ_ASSERT((aCreate && !aHandle->mFileExists) ||
|
|
(!aCreate && aHandle->mFileExists));
|
|
|
|
nsresult rv;
|
|
|
|
if (mHandlesByLastUsed.Length() == kOpenHandlesLimit) {
|
|
// close handle that hasn't been used for the longest time
|
|
rv = ReleaseNSPRHandleInternal(mHandlesByLastUsed[0]);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
if (aCreate) {
|
|
rv = aHandle->mFile->OpenNSPRFileDesc(
|
|
PR_RDWR | PR_CREATE_FILE | PR_TRUNCATE, 0600, &aHandle->mFD);
|
|
if (rv == NS_ERROR_FILE_ALREADY_EXISTS || // error from nsLocalFileWin
|
|
rv == NS_ERROR_FILE_NO_DEVICE_SPACE) { // error from nsLocalFileUnix
|
|
LOG(("CacheFileIOManager::OpenNSPRHandle() - Cannot create a new file, we"
|
|
" might reached a limit on FAT32. Will evict a single entry and try "
|
|
"again. [hash=%08x%08x%08x%08x%08x]", LOGSHA1(aHandle->Hash())));
|
|
|
|
SHA1Sum::Hash hash;
|
|
uint32_t cnt;
|
|
|
|
rv = CacheIndex::GetEntryForEviction(true, &hash, &cnt);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = DoomFileByKeyInternal(&hash);
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = aHandle->mFile->OpenNSPRFileDesc(
|
|
PR_RDWR | PR_CREATE_FILE | PR_TRUNCATE, 0600, &aHandle->mFD);
|
|
LOG(("CacheFileIOManager::OpenNSPRHandle() - Successfully evicted entry"
|
|
" with hash %08x%08x%08x%08x%08x. %s to create the new file.",
|
|
LOGSHA1(&hash), NS_SUCCEEDED(rv) ? "Succeeded" : "Failed"));
|
|
|
|
// Report the full size only once per session
|
|
static bool sSizeReported = false;
|
|
if (!sSizeReported) {
|
|
uint32_t cacheUsage;
|
|
if (NS_SUCCEEDED(CacheIndex::GetCacheSize(&cacheUsage))) {
|
|
cacheUsage >>= 10;
|
|
Telemetry::Accumulate(Telemetry::NETWORK_CACHE_SIZE_FULL_FAT,
|
|
cacheUsage);
|
|
sSizeReported = true;
|
|
}
|
|
}
|
|
} else {
|
|
LOG(("CacheFileIOManager::OpenNSPRHandle() - Couldn't evict an existing"
|
|
" entry."));
|
|
rv = NS_ERROR_FILE_NO_DEVICE_SPACE;
|
|
}
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
aHandle->mFileExists = true;
|
|
} else {
|
|
rv = aHandle->mFile->OpenNSPRFileDesc(PR_RDWR, 0600, &aHandle->mFD);
|
|
if (NS_ERROR_FILE_NOT_FOUND == rv) {
|
|
LOG((" file doesn't exists"));
|
|
aHandle->mFileExists = false;
|
|
return DoomFileInternal(aHandle);
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
mHandlesByLastUsed.AppendElement(aHandle);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
CacheFileIOManager::NSPRHandleUsed(CacheFileHandle *aHandle)
|
|
{
|
|
MOZ_ASSERT(CacheFileIOManager::IsOnIOThreadOrCeased());
|
|
MOZ_ASSERT(aHandle->mFD);
|
|
|
|
DebugOnly<bool> found;
|
|
found = mHandlesByLastUsed.RemoveElement(aHandle);
|
|
MOZ_ASSERT(found);
|
|
|
|
mHandlesByLastUsed.AppendElement(aHandle);
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::SyncRemoveDir(nsIFile *aFile, const char *aDir)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIFile> file;
|
|
|
|
if (!aDir) {
|
|
file = aFile;
|
|
} else {
|
|
rv = aFile->Clone(getter_AddRefs(file));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
rv = file->AppendNative(nsDependentCString(aDir));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
if (LOG_ENABLED()) {
|
|
nsAutoCString path;
|
|
file->GetNativePath(path);
|
|
LOG(("CacheFileIOManager::SyncRemoveDir() - Removing directory %s",
|
|
path.get()));
|
|
}
|
|
|
|
rv = file->Remove(true);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("CacheFileIOManager::SyncRemoveDir() - Removing failed! [rv=0x%08x]",
|
|
rv));
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
CacheFileIOManager::SyncRemoveAllCacheFiles()
|
|
{
|
|
LOG(("CacheFileIOManager::SyncRemoveAllCacheFiles()"));
|
|
|
|
nsresult rv;
|
|
|
|
SyncRemoveDir(mCacheDirectory, ENTRIES_DIR);
|
|
SyncRemoveDir(mCacheDirectory, DOOMED_DIR);
|
|
|
|
// Clear any intermediate state of trash dir enumeration.
|
|
mFailedTrashDirs.Clear();
|
|
mTrashDir = nullptr;
|
|
|
|
while (true) {
|
|
// FindTrashDirToRemove() fills mTrashDir if there is any trash directory.
|
|
rv = FindTrashDirToRemove();
|
|
if (rv == NS_ERROR_NOT_AVAILABLE) {
|
|
LOG(("CacheFileIOManager::SyncRemoveAllCacheFiles() - No trash directory "
|
|
"found."));
|
|
break;
|
|
}
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("CacheFileIOManager::SyncRemoveAllCacheFiles() - "
|
|
"FindTrashDirToRemove() returned an unexpected error. [rv=0x%08x]",
|
|
rv));
|
|
break;
|
|
}
|
|
|
|
rv = SyncRemoveDir(mTrashDir, nullptr);
|
|
if (NS_FAILED(rv)) {
|
|
nsAutoCString leafName;
|
|
mTrashDir->GetNativeLeafName(leafName);
|
|
mFailedTrashDirs.AppendElement(leafName);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Returns default ("smart") size (in KB) of cache, given available disk space
|
|
// (also in KB)
|
|
static uint32_t
|
|
SmartCacheSize(const uint32_t availKB)
|
|
{
|
|
uint32_t maxSize = kMaxCacheSizeKB;
|
|
|
|
if (availKB > 100 * 1024 * 1024) {
|
|
return maxSize; // skip computing if we're over 100 GB
|
|
}
|
|
|
|
// Grow/shrink in 10 MB units, deliberately, so that in the common case we
|
|
// don't shrink cache and evict items every time we startup (it's important
|
|
// that we don't slow down startup benchmarks).
|
|
uint32_t sz10MBs = 0;
|
|
uint32_t avail10MBs = availKB / (1024*10);
|
|
|
|
// .5% of space above 25 GB
|
|
if (avail10MBs > 2500) {
|
|
sz10MBs += static_cast<uint32_t>((avail10MBs - 2500)*.005);
|
|
avail10MBs = 2500;
|
|
}
|
|
// 1% of space between 7GB -> 25 GB
|
|
if (avail10MBs > 700) {
|
|
sz10MBs += static_cast<uint32_t>((avail10MBs - 700)*.01);
|
|
avail10MBs = 700;
|
|
}
|
|
// 5% of space between 500 MB -> 7 GB
|
|
if (avail10MBs > 50) {
|
|
sz10MBs += static_cast<uint32_t>((avail10MBs - 50)*.05);
|
|
avail10MBs = 50;
|
|
}
|
|
|
|
#ifdef ANDROID
|
|
// On Android, smaller/older devices may have very little storage and
|
|
// device owners may be sensitive to storage footprint: Use a smaller
|
|
// percentage of available space and a smaller minimum.
|
|
|
|
// 20% of space up to 500 MB (10 MB min)
|
|
sz10MBs += std::max<uint32_t>(1, static_cast<uint32_t>(avail10MBs * .2));
|
|
#else
|
|
// 40% of space up to 500 MB (50 MB min)
|
|
sz10MBs += std::max<uint32_t>(5, static_cast<uint32_t>(avail10MBs * .4));
|
|
#endif
|
|
|
|
return std::min<uint32_t>(maxSize, sz10MBs * 10 * 1024);
|
|
}
|
|
|
|
nsresult
|
|
CacheFileIOManager::UpdateSmartCacheSize(int64_t aFreeSpace)
|
|
{
|
|
MOZ_ASSERT(mIOThread->IsCurrentThread());
|
|
|
|
nsresult rv;
|
|
|
|
if (!CacheObserver::UseNewCache()) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
if (!CacheObserver::SmartCacheSizeEnabled()) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
// Wait at least kSmartSizeUpdateInterval before recomputing smart size.
|
|
static const TimeDuration kUpdateLimit =
|
|
TimeDuration::FromMilliseconds(kSmartSizeUpdateInterval);
|
|
if (!mLastSmartSizeTime.IsNull() &&
|
|
(TimeStamp::NowLoRes() - mLastSmartSizeTime) < kUpdateLimit) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Do not compute smart size when cache size is not reliable.
|
|
bool isUpToDate = false;
|
|
CacheIndex::IsUpToDate(&isUpToDate);
|
|
if (!isUpToDate) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
uint32_t cacheUsage;
|
|
rv = CacheIndex::GetCacheSize(&cacheUsage);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
LOG(("CacheFileIOManager::UpdateSmartCacheSize() - Cannot get cacheUsage! "
|
|
"[rv=0x%08x]", rv));
|
|
return rv;
|
|
}
|
|
|
|
mLastSmartSizeTime = TimeStamp::NowLoRes();
|
|
|
|
uint32_t smartSize = SmartCacheSize(static_cast<uint32_t>(aFreeSpace / 1024) +
|
|
cacheUsage);
|
|
|
|
if (smartSize == (CacheObserver::DiskCacheCapacity() >> 10)) {
|
|
// Smart size has not changed.
|
|
return NS_OK;
|
|
}
|
|
|
|
CacheObserver::SetDiskCacheCapacity(smartSize << 10);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Memory reporting
|
|
|
|
namespace { // anon
|
|
|
|
// A helper class that dispatches and waits for an event that gets result of
|
|
// CacheFileIOManager->mHandles.SizeOfExcludingThis() on the I/O thread
|
|
// to safely get handles memory report.
|
|
// We must do this, since the handle list is only accessed and managed w/o
|
|
// locking on the I/O thread. That is by design.
|
|
class SizeOfHandlesRunnable : public nsRunnable
|
|
{
|
|
public:
|
|
SizeOfHandlesRunnable(mozilla::MallocSizeOf mallocSizeOf,
|
|
CacheFileHandles const &handles,
|
|
nsTArray<CacheFileHandle *> const &specialHandles)
|
|
: mMonitor("SizeOfHandlesRunnable.mMonitor")
|
|
, mMallocSizeOf(mallocSizeOf)
|
|
, mHandles(handles)
|
|
, mSpecialHandles(specialHandles)
|
|
{
|
|
}
|
|
|
|
size_t Get(CacheIOThread* thread)
|
|
{
|
|
nsCOMPtr<nsIEventTarget> target = thread->Target();
|
|
if (!target) {
|
|
NS_ERROR("If we have the I/O thread we also must have the I/O target");
|
|
return 0;
|
|
}
|
|
|
|
mozilla::MonitorAutoLock mon(mMonitor);
|
|
nsresult rv = target->Dispatch(this, nsIEventTarget::DISPATCH_NORMAL);
|
|
if (NS_FAILED(rv)) {
|
|
NS_ERROR("Dispatch failed, cannot do memory report of CacheFileHandles");
|
|
return 0;
|
|
}
|
|
|
|
mon.Wait();
|
|
return mSize;
|
|
}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
mozilla::MonitorAutoLock mon(mMonitor);
|
|
// Excluding this since the object itself is a member of CacheFileIOManager
|
|
// reported in CacheFileIOManager::SizeOfIncludingThis as part of |this|.
|
|
mSize = mHandles.SizeOfExcludingThis(mMallocSizeOf);
|
|
for (uint32_t i = 0; i < mSpecialHandles.Length(); ++i) {
|
|
mSize += mSpecialHandles[i]->SizeOfIncludingThis(mMallocSizeOf);
|
|
}
|
|
|
|
mon.Notify();
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
mozilla::Monitor mMonitor;
|
|
mozilla::MallocSizeOf mMallocSizeOf;
|
|
CacheFileHandles const &mHandles;
|
|
nsTArray<CacheFileHandle *> const &mSpecialHandles;
|
|
size_t mSize;
|
|
};
|
|
|
|
} // anon
|
|
|
|
size_t
|
|
CacheFileIOManager::SizeOfExcludingThisInternal(mozilla::MallocSizeOf mallocSizeOf) const
|
|
{
|
|
size_t n = 0;
|
|
nsCOMPtr<nsISizeOf> sizeOf;
|
|
|
|
if (mIOThread) {
|
|
n += mIOThread->SizeOfIncludingThis(mallocSizeOf);
|
|
|
|
// mHandles and mSpecialHandles must be accessed only on the I/O thread,
|
|
// must sync dispatch.
|
|
nsRefPtr<SizeOfHandlesRunnable> sizeOfHandlesRunnable =
|
|
new SizeOfHandlesRunnable(mallocSizeOf, mHandles, mSpecialHandles);
|
|
n += sizeOfHandlesRunnable->Get(mIOThread);
|
|
}
|
|
|
|
// mHandlesByLastUsed just refers handles reported by mHandles.
|
|
|
|
sizeOf = do_QueryInterface(mCacheDirectory);
|
|
if (sizeOf)
|
|
n += sizeOf->SizeOfIncludingThis(mallocSizeOf);
|
|
|
|
sizeOf = do_QueryInterface(mMetadataWritesTimer);
|
|
if (sizeOf)
|
|
n += sizeOf->SizeOfIncludingThis(mallocSizeOf);
|
|
|
|
sizeOf = do_QueryInterface(mTrashTimer);
|
|
if (sizeOf)
|
|
n += sizeOf->SizeOfIncludingThis(mallocSizeOf);
|
|
|
|
sizeOf = do_QueryInterface(mTrashDir);
|
|
if (sizeOf)
|
|
n += sizeOf->SizeOfIncludingThis(mallocSizeOf);
|
|
|
|
for (uint32_t i = 0; i < mFailedTrashDirs.Length(); ++i) {
|
|
n += mFailedTrashDirs[i].SizeOfExcludingThisIfUnshared(mallocSizeOf);
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
// static
|
|
size_t
|
|
CacheFileIOManager::SizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf)
|
|
{
|
|
if (!gInstance)
|
|
return 0;
|
|
|
|
return gInstance->SizeOfExcludingThisInternal(mallocSizeOf);
|
|
}
|
|
|
|
// static
|
|
size_t
|
|
CacheFileIOManager::SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf)
|
|
{
|
|
return mallocSizeOf(gInstance) + SizeOfExcludingThis(mallocSizeOf);
|
|
}
|
|
|
|
} // net
|
|
} // mozilla
|