зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
2.7 KiB
C++
85 строки
2.7 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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#ifndef mozilla_ipc_CrashReporterClient_h
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#define mozilla_ipc_CrashReporterClient_h
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#include "mozilla/Assertions.h"
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#include "mozilla/StaticMutex.h"
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#include "mozilla/StaticPtr.h"
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#include "mozilla/Unused.h"
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#include "mozilla/ipc/Shmem.h"
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namespace mozilla {
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namespace ipc {
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class CrashReporterMetadataShmem;
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class CrashReporterClient {
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CrashReporterClient);
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// |aTopLevelProtocol| must be a top-level protocol instance, as sub-actors
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// do not have AllocUnsafeShmem. It must also have a child-to-parent message:
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//
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// async InitCrashReporter(Shmem shmem, NativeThreadId threadId);
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//
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// The parent-side receive function of this message should save the shmem
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// somewhere, and when the top-level actor's ActorDestroy runs (or when the
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// crash reporter needs metadata), the shmem should be parsed.
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template <typename T>
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static void InitSingleton(T* aToplevelProtocol) {
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// The crash reporter is not enabled in recording/replaying processes.
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if (recordreplay::IsRecordingOrReplaying()) {
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return;
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}
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Shmem shmem;
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if (!AllocShmem(aToplevelProtocol, &shmem)) {
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MOZ_DIAGNOSTIC_ASSERT(false, "failed to allocate crash reporter shmem");
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return;
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}
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InitSingletonWithShmem(shmem);
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Unused << aToplevelProtocol->SendInitCrashReporter(
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std::move(shmem), CrashReporter::CurrentThreadId());
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}
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template <typename T>
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static bool AllocShmem(T* aToplevelProtocol, Shmem* aOutShmem) {
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// 16KB should be enough for most metadata - see bug 1278717 comment #11.
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static const size_t kShmemSize = 16 * 1024;
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return aToplevelProtocol->AllocUnsafeShmem(
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kShmemSize, SharedMemory::TYPE_BASIC, aOutShmem);
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}
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static void InitSingletonWithShmem(const Shmem& aShmem);
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static void DestroySingleton();
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static RefPtr<CrashReporterClient> GetSingleton();
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void AnnotateCrashReport(CrashReporter::Annotation aKey,
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const nsACString& aData);
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void AppendAppNotes(const nsACString& aData);
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private:
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explicit CrashReporterClient(const Shmem& aShmem);
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~CrashReporterClient();
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private:
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static StaticMutex sLock;
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static StaticRefPtr<CrashReporterClient> sClientSingleton;
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private:
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UniquePtr<CrashReporterMetadataShmem> mMetadata;
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};
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} // namespace ipc
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} // namespace mozilla
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#endif // mozilla_ipc_CrashReporterClient_h
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