зеркало из https://github.com/mozilla/gecko-dev.git
749 строки
17 KiB
C++
749 строки
17 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* 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 "DOMStorageIPC.h"
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#include "DOMStorageManager.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/dom/ContentParent.h"
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#include "mozilla/unused.h"
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#include "nsIDiskSpaceWatcher.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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namespace dom {
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// ----------------------------------------------------------------------------
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// Child
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// ----------------------------------------------------------------------------
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NS_IMPL_ADDREF(DOMStorageDBChild)
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NS_IMETHODIMP_(MozExternalRefCountType) DOMStorageDBChild::Release(void)
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{
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NS_PRECONDITION(0 != mRefCnt, "dup release");
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nsrefcnt count = --mRefCnt;
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NS_LOG_RELEASE(this, count, "DOMStorageDBChild");
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if (count == 1 && mIPCOpen) {
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Send__delete__(this);
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return 0;
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}
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if (count == 0) {
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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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void
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DOMStorageDBChild::AddIPDLReference()
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{
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MOZ_ASSERT(!mIPCOpen, "Attempting to retain multiple IPDL references");
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mIPCOpen = true;
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AddRef();
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}
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void
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DOMStorageDBChild::ReleaseIPDLReference()
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{
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MOZ_ASSERT(mIPCOpen, "Attempting to release non-existent IPDL reference");
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mIPCOpen = false;
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Release();
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}
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DOMStorageDBChild::DOMStorageDBChild(DOMLocalStorageManager* aManager)
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: mManager(aManager)
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, mStatus(NS_OK)
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, mIPCOpen(false)
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{
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}
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DOMStorageDBChild::~DOMStorageDBChild()
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{
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}
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nsTHashtable<nsCStringHashKey>&
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DOMStorageDBChild::ScopesHavingData()
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{
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if (!mScopesHavingData) {
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mScopesHavingData = new nsTHashtable<nsCStringHashKey>;
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}
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return *mScopesHavingData;
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}
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nsresult
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DOMStorageDBChild::Init()
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{
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ContentChild* child = ContentChild::GetSingleton();
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AddIPDLReference();
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child->SendPStorageConstructor(this);
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return NS_OK;
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}
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nsresult
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DOMStorageDBChild::Shutdown()
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{
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// There is nothing to do here, IPC will release automatically and
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// the actual thread running on the parent process will also stop
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// automatically in profile-before-change topic observer.
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return NS_OK;
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}
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void
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DOMStorageDBChild::AsyncPreload(DOMStorageCacheBridge* aCache, bool aPriority)
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{
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if (mIPCOpen) {
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// Adding ref to cache for the time of preload. This ensures a reference to
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// to the cache and that all keys will load into this cache object.
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mLoadingCaches.PutEntry(aCache);
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SendAsyncPreload(aCache->Scope(), aPriority);
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} else {
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// No IPC, no love. But the LoadDone call is expected.
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aCache->LoadDone(NS_ERROR_UNEXPECTED);
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}
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}
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void
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DOMStorageDBChild::AsyncGetUsage(DOMStorageUsageBridge* aUsage)
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{
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if (mIPCOpen) {
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SendAsyncGetUsage(aUsage->Scope());
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}
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}
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void
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DOMStorageDBChild::SyncPreload(DOMStorageCacheBridge* aCache, bool aForceSync)
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{
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if (NS_FAILED(mStatus)) {
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aCache->LoadDone(mStatus);
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return;
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}
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if (!mIPCOpen) {
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aCache->LoadDone(NS_ERROR_UNEXPECTED);
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return;
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}
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// There is no way to put the child process to a wait state to receive all
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// incoming async responses from the parent, hence we have to do a sync preload
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// instead. We are smart though, we only demand keys that are left to load in
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// case the async preload has already loaded some keys.
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InfallibleTArray<nsString> keys, values;
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nsresult rv;
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SendPreload(aCache->Scope(), aCache->LoadedCount(), &keys, &values, &rv);
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for (uint32_t i = 0; i < keys.Length(); ++i) {
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aCache->LoadItem(keys[i], values[i]);
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}
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aCache->LoadDone(rv);
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}
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nsresult
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DOMStorageDBChild::AsyncAddItem(DOMStorageCacheBridge* aCache,
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const nsAString& aKey,
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const nsAString& aValue)
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{
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if (NS_FAILED(mStatus) || !mIPCOpen) {
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return mStatus;
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}
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SendAsyncAddItem(aCache->Scope(), nsString(aKey), nsString(aValue));
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ScopesHavingData().PutEntry(aCache->Scope());
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return NS_OK;
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}
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nsresult
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DOMStorageDBChild::AsyncUpdateItem(DOMStorageCacheBridge* aCache,
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const nsAString& aKey,
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const nsAString& aValue)
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{
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if (NS_FAILED(mStatus) || !mIPCOpen) {
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return mStatus;
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}
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SendAsyncUpdateItem(aCache->Scope(), nsString(aKey), nsString(aValue));
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ScopesHavingData().PutEntry(aCache->Scope());
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return NS_OK;
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}
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nsresult
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DOMStorageDBChild::AsyncRemoveItem(DOMStorageCacheBridge* aCache,
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const nsAString& aKey)
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{
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if (NS_FAILED(mStatus) || !mIPCOpen) {
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return mStatus;
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}
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SendAsyncRemoveItem(aCache->Scope(), nsString(aKey));
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return NS_OK;
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}
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nsresult
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DOMStorageDBChild::AsyncClear(DOMStorageCacheBridge* aCache)
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{
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if (NS_FAILED(mStatus) || !mIPCOpen) {
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return mStatus;
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}
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SendAsyncClear(aCache->Scope());
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ScopesHavingData().RemoveEntry(aCache->Scope());
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return NS_OK;
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}
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bool
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DOMStorageDBChild::ShouldPreloadScope(const nsACString& aScope)
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{
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// Return true if we didn't receive the aScope list yet.
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// I tend to rather preserve a bit of early-after-start performance
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// then a bit of memory here.
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return !mScopesHavingData || mScopesHavingData->Contains(aScope);
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}
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bool
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DOMStorageDBChild::RecvObserve(const nsCString& aTopic,
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const nsCString& aScopePrefix)
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{
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DOMStorageObserver::Self()->Notify(aTopic.get(), aScopePrefix);
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return true;
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}
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bool
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DOMStorageDBChild::RecvScopesHavingData(nsTArray<nsCString>&& aScopes)
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{
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for (uint32_t i = 0; i < aScopes.Length(); ++i) {
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ScopesHavingData().PutEntry(aScopes[i]);
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}
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return true;
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}
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bool
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DOMStorageDBChild::RecvLoadItem(const nsCString& aScope,
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const nsString& aKey,
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const nsString& aValue)
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{
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DOMStorageCache* aCache = mManager->GetCache(aScope);
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if (aCache) {
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aCache->LoadItem(aKey, aValue);
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}
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return true;
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}
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bool
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DOMStorageDBChild::RecvLoadDone(const nsCString& aScope, const nsresult& aRv)
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{
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DOMStorageCache* aCache = mManager->GetCache(aScope);
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if (aCache) {
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aCache->LoadDone(aRv);
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// Just drop reference to this cache now since the load is done.
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mLoadingCaches.RemoveEntry(static_cast<DOMStorageCacheBridge*>(aCache));
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}
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return true;
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}
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bool
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DOMStorageDBChild::RecvLoadUsage(const nsCString& aScope, const int64_t& aUsage)
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{
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nsRefPtr<DOMStorageUsageBridge> scopeUsage = mManager->GetScopeUsage(aScope);
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scopeUsage->LoadUsage(aUsage);
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return true;
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}
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bool
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DOMStorageDBChild::RecvError(const nsresult& aRv)
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{
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mStatus = aRv;
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return true;
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}
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// ----------------------------------------------------------------------------
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// Parent
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// ----------------------------------------------------------------------------
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NS_IMPL_ADDREF(DOMStorageDBParent)
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NS_IMPL_RELEASE(DOMStorageDBParent)
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void
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DOMStorageDBParent::AddIPDLReference()
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{
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MOZ_ASSERT(!mIPCOpen, "Attempting to retain multiple IPDL references");
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mIPCOpen = true;
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AddRef();
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}
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void
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DOMStorageDBParent::ReleaseIPDLReference()
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{
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MOZ_ASSERT(mIPCOpen, "Attempting to release non-existent IPDL reference");
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mIPCOpen = false;
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Release();
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}
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namespace {
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class SendInitialChildDataRunnable : public nsRunnable
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{
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public:
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explicit SendInitialChildDataRunnable(DOMStorageDBParent* aParent)
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: mParent(aParent)
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{}
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private:
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NS_IMETHOD Run()
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{
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if (!mParent->IPCOpen()) {
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return NS_OK;
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}
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DOMStorageDBBridge* db = DOMStorageCache::GetDatabase();
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if (db) {
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InfallibleTArray<nsCString> scopes;
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db->GetScopesHavingData(&scopes);
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mozilla::unused << mParent->SendScopesHavingData(scopes);
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}
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// We need to check if the device is in a low disk space situation, so
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// we can forbid in that case any write in localStorage.
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nsCOMPtr<nsIDiskSpaceWatcher> diskSpaceWatcher =
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do_GetService("@mozilla.org/toolkit/disk-space-watcher;1");
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if (!diskSpaceWatcher) {
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NS_WARNING("Could not get disk information from DiskSpaceWatcher");
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return NS_OK;
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}
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bool lowDiskSpace = false;
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diskSpaceWatcher->GetIsDiskFull(&lowDiskSpace);
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if (lowDiskSpace) {
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mozilla::unused << mParent->SendObserve(
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nsDependentCString("low-disk-space"), EmptyCString());
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}
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return NS_OK;
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}
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nsRefPtr<DOMStorageDBParent> mParent;
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};
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} // namespace
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DOMStorageDBParent::DOMStorageDBParent()
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: mIPCOpen(false)
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{
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DOMStorageObserver* observer = DOMStorageObserver::Self();
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if (observer) {
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observer->AddSink(this);
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}
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// We are always open by IPC only
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AddIPDLReference();
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// Cannot send directly from here since the channel
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// is not completely built at this moment.
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nsRefPtr<SendInitialChildDataRunnable> r =
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new SendInitialChildDataRunnable(this);
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NS_DispatchToCurrentThread(r);
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}
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DOMStorageDBParent::~DOMStorageDBParent()
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{
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DOMStorageObserver* observer = DOMStorageObserver::Self();
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if (observer) {
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observer->RemoveSink(this);
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}
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}
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mozilla::ipc::IProtocol*
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DOMStorageDBParent::CloneProtocol(Channel* aChannel,
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mozilla::ipc::ProtocolCloneContext* aCtx)
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{
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ContentParent* contentParent = aCtx->GetContentParent();
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nsAutoPtr<PStorageParent> actor(contentParent->AllocPStorageParent());
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if (!actor || !contentParent->RecvPStorageConstructor(actor)) {
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return nullptr;
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}
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return actor.forget();
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}
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DOMStorageDBParent::CacheParentBridge*
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DOMStorageDBParent::NewCache(const nsACString& aScope)
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{
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return new CacheParentBridge(this, aScope);
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}
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void
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DOMStorageDBParent::ActorDestroy(ActorDestroyReason aWhy)
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{
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// Implement me! Bug 1005169
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}
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bool
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DOMStorageDBParent::RecvAsyncPreload(const nsCString& aScope, const bool& aPriority)
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{
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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if (!db) {
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return false;
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}
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db->AsyncPreload(NewCache(aScope), aPriority);
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return true;
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}
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bool
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DOMStorageDBParent::RecvAsyncGetUsage(const nsCString& aScope)
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{
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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if (!db) {
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return false;
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}
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// The object releases it self in LoadUsage method
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nsRefPtr<UsageParentBridge> usage = new UsageParentBridge(this, aScope);
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db->AsyncGetUsage(usage);
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return true;
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}
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namespace {
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// We need another implementation of DOMStorageCacheBridge to do
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// synchronous IPC preload. This class just receives Load* notifications
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// and fills the returning arguments of RecvPreload with the database
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// values for us.
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class SyncLoadCacheHelper : public DOMStorageCacheBridge
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{
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public:
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SyncLoadCacheHelper(const nsCString& aScope,
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uint32_t aAlreadyLoadedCount,
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InfallibleTArray<nsString>* aKeys,
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InfallibleTArray<nsString>* aValues,
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nsresult* rv)
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: mMonitor("DOM Storage SyncLoad IPC")
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, mScope(aScope)
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, mKeys(aKeys)
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, mValues(aValues)
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, mRv(rv)
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, mLoaded(false)
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, mLoadedCount(aAlreadyLoadedCount)
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{
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// Precaution
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*mRv = NS_ERROR_UNEXPECTED;
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}
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virtual const nsCString& Scope() const { return mScope; }
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virtual bool Loaded() { return mLoaded; }
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virtual uint32_t LoadedCount() { return mLoadedCount; }
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virtual bool LoadItem(const nsAString& aKey, const nsString& aValue)
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{
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// Called on the aCache background thread
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if (mLoaded) {
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return false;
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}
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++mLoadedCount;
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mKeys->AppendElement(aKey);
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mValues->AppendElement(aValue);
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return true;
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}
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virtual void LoadDone(nsresult aRv)
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{
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// Called on the aCache background thread
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MonitorAutoLock monitor(mMonitor);
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mLoaded = true;
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*mRv = aRv;
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monitor.Notify();
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}
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virtual void LoadWait()
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{
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// Called on the main thread, exits after LoadDone() call
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MonitorAutoLock monitor(mMonitor);
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while (!mLoaded) {
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monitor.Wait();
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}
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}
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private:
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Monitor mMonitor;
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nsCString mScope;
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InfallibleTArray<nsString>* mKeys;
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InfallibleTArray<nsString>* mValues;
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nsresult* mRv;
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bool mLoaded;
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uint32_t mLoadedCount;
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};
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} // namespace
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bool
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DOMStorageDBParent::RecvPreload(const nsCString& aScope,
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const uint32_t& aAlreadyLoadedCount,
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InfallibleTArray<nsString>* aKeys,
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InfallibleTArray<nsString>* aValues,
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nsresult* aRv)
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{
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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if (!db) {
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return false;
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}
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nsRefPtr<SyncLoadCacheHelper> cache(
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new SyncLoadCacheHelper(aScope, aAlreadyLoadedCount, aKeys, aValues, aRv));
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db->SyncPreload(cache, true);
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return true;
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}
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bool
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DOMStorageDBParent::RecvAsyncAddItem(const nsCString& aScope,
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const nsString& aKey,
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const nsString& aValue)
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{
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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if (!db) {
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return false;
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}
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nsresult rv = db->AsyncAddItem(NewCache(aScope), aKey, aValue);
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if (NS_FAILED(rv) && mIPCOpen) {
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mozilla::unused << SendError(rv);
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}
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return true;
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}
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bool
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DOMStorageDBParent::RecvAsyncUpdateItem(const nsCString& aScope,
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const nsString& aKey,
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const nsString& aValue)
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{
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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if (!db) {
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return false;
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}
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nsresult rv = db->AsyncUpdateItem(NewCache(aScope), aKey, aValue);
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if (NS_FAILED(rv) && mIPCOpen) {
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mozilla::unused << SendError(rv);
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}
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return true;
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}
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bool
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DOMStorageDBParent::RecvAsyncRemoveItem(const nsCString& aScope,
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const nsString& aKey)
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{
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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if (!db) {
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return false;
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}
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nsresult rv = db->AsyncRemoveItem(NewCache(aScope), aKey);
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if (NS_FAILED(rv) && mIPCOpen) {
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mozilla::unused << SendError(rv);
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}
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return true;
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}
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bool
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DOMStorageDBParent::RecvAsyncClear(const nsCString& aScope)
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{
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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if (!db) {
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return false;
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}
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nsresult rv = db->AsyncClear(NewCache(aScope));
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if (NS_FAILED(rv) && mIPCOpen) {
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mozilla::unused << SendError(rv);
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}
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return true;
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}
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|
|
bool
|
|
DOMStorageDBParent::RecvAsyncFlush()
|
|
{
|
|
DOMStorageDBBridge* db = DOMStorageCache::GetDatabase();
|
|
if (!db) {
|
|
return false;
|
|
}
|
|
|
|
db->AsyncFlush();
|
|
return true;
|
|
}
|
|
|
|
// DOMStorageObserverSink
|
|
|
|
nsresult
|
|
DOMStorageDBParent::Observe(const char* aTopic,
|
|
const nsACString& aScopePrefix)
|
|
{
|
|
if (mIPCOpen) {
|
|
#ifdef MOZ_NUWA_PROCESS
|
|
if (!(static_cast<ContentParent*>(Manager())->IsNuwaProcess() &&
|
|
ContentParent::IsNuwaReady())) {
|
|
#endif
|
|
mozilla::unused << SendObserve(nsDependentCString(aTopic),
|
|
nsCString(aScopePrefix));
|
|
#ifdef MOZ_NUWA_PROCESS
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
namespace {
|
|
|
|
// Results must be sent back on the main thread
|
|
class LoadRunnable : public nsRunnable
|
|
{
|
|
public:
|
|
enum TaskType {
|
|
loadItem,
|
|
loadDone
|
|
};
|
|
|
|
LoadRunnable(DOMStorageDBParent* aParent,
|
|
TaskType aType,
|
|
const nsACString& aScope,
|
|
const nsAString& aKey = EmptyString(),
|
|
const nsAString& aValue = EmptyString())
|
|
: mParent(aParent)
|
|
, mType(aType)
|
|
, mScope(aScope)
|
|
, mKey(aKey)
|
|
, mValue(aValue)
|
|
{ }
|
|
|
|
LoadRunnable(DOMStorageDBParent* aParent,
|
|
TaskType aType,
|
|
const nsACString& aScope,
|
|
nsresult aRv)
|
|
: mParent(aParent)
|
|
, mType(aType)
|
|
, mScope(aScope)
|
|
, mRv(aRv)
|
|
{ }
|
|
|
|
private:
|
|
nsRefPtr<DOMStorageDBParent> mParent;
|
|
TaskType mType;
|
|
nsCString mScope;
|
|
nsString mKey;
|
|
nsString mValue;
|
|
nsresult mRv;
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
if (!mParent->IPCOpen()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
switch (mType)
|
|
{
|
|
case loadItem:
|
|
mozilla::unused << mParent->SendLoadItem(mScope, mKey, mValue);
|
|
break;
|
|
case loadDone:
|
|
mozilla::unused << mParent->SendLoadDone(mScope, mRv);
|
|
break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
} // namespace
|
|
|
|
// DOMStorageDBParent::CacheParentBridge
|
|
|
|
bool
|
|
DOMStorageDBParent::CacheParentBridge::LoadItem(const nsAString& aKey, const nsString& aValue)
|
|
{
|
|
if (mLoaded) {
|
|
return false;
|
|
}
|
|
|
|
++mLoadedCount;
|
|
|
|
nsRefPtr<LoadRunnable> r =
|
|
new LoadRunnable(mParent, LoadRunnable::loadItem, mScope, aKey, aValue);
|
|
NS_DispatchToMainThread(r);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
DOMStorageDBParent::CacheParentBridge::LoadDone(nsresult aRv)
|
|
{
|
|
// Prevent send of duplicate LoadDone.
|
|
if (mLoaded) {
|
|
return;
|
|
}
|
|
|
|
mLoaded = true;
|
|
|
|
nsRefPtr<LoadRunnable> r =
|
|
new LoadRunnable(mParent, LoadRunnable::loadDone, mScope, aRv);
|
|
NS_DispatchToMainThread(r);
|
|
}
|
|
|
|
void
|
|
DOMStorageDBParent::CacheParentBridge::LoadWait()
|
|
{
|
|
// Should never be called on this implementation
|
|
MOZ_ASSERT(false);
|
|
}
|
|
|
|
// DOMStorageDBParent::UsageParentBridge
|
|
|
|
namespace {
|
|
|
|
class UsageRunnable : public nsRunnable
|
|
{
|
|
public:
|
|
UsageRunnable(DOMStorageDBParent* aParent, const nsACString& aScope, const int64_t& aUsage)
|
|
: mParent(aParent)
|
|
, mScope(aScope)
|
|
, mUsage(aUsage)
|
|
{}
|
|
|
|
private:
|
|
NS_IMETHOD Run()
|
|
{
|
|
if (!mParent->IPCOpen()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mozilla::unused << mParent->SendLoadUsage(mScope, mUsage);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsRefPtr<DOMStorageDBParent> mParent;
|
|
nsCString mScope;
|
|
int64_t mUsage;
|
|
};
|
|
|
|
} // namespace
|
|
|
|
void
|
|
DOMStorageDBParent::UsageParentBridge::LoadUsage(const int64_t aUsage)
|
|
{
|
|
nsRefPtr<UsageRunnable> r = new UsageRunnable(mParent, mScope, aUsage);
|
|
NS_DispatchToMainThread(r);
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|