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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_ipc_CrashReporterClient_h
#define mozilla_ipc_CrashReporterClient_h
#include "mozilla/StaticMutex.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/Unused.h"
#include "mozilla/ipc/Shmem.h"
namespace mozilla {
namespace ipc {
class CrashReporterMetadataShmem;
class CrashReporterClient
{
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CrashReporterClient);
// |aTopLevelProtocol| must be a top-level protocol instance, as sub-actors
// do not have AllocUnsafeShmem. It must also have a child-to-parent message:
//
// async SetCrashReporterClient(Shmem shmem);
//
// The parent-side receive function of this message should save the shmem
// somewhere, and when the top-level actor's ActorDestroy runs (or when the
// crash reporter needs metadata), the shmem should be parsed.
template <typename T>
static bool InitSingleton(T* aToplevelProtocol) {
// 16KB should be enough for most metadata - see bug 1278717 comment #11.
static const size_t kShmemSize = 16 * 1024;
Shmem shmem;
bool rv = aToplevelProtocol->AllocUnsafeShmem(
kShmemSize,
SharedMemory::TYPE_BASIC,
&shmem);
if (!rv) {
return false;
}
InitSingletonWithShmem(shmem);
Unused << aToplevelProtocol->SendInitCrashReporter(shmem);
return true;
}
static void DestroySingleton();
static RefPtr<CrashReporterClient> GetSingleton();
void AnnotateCrashReport(const nsCString& aKey, const nsCString& aData);
void AppendAppNotes(const nsCString& aData);
private:
explicit CrashReporterClient(const Shmem& aShmem);
~CrashReporterClient();
static void InitSingletonWithShmem(const Shmem& aShmem);
private:
static StaticMutex sLock;
static StaticRefPtr<CrashReporterClient> sClientSingleton;
private:
UniquePtr<CrashReporterMetadataShmem> mMetadata;
};
} // namespace ipc
} // namespace mozilla
#endif // mozilla_ipc_CrashReporterClient_h
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