gecko-dev/ipc/glue/CrashReporterHost.h

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4.6 KiB
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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_CrashReporterHost_h
#define mozilla_ipc_CrashReporterHost_h
#include <functional>
#include "mozilla/UniquePtr.h"
#include "mozilla/ipc/Shmem.h"
#include "base/process.h"
#include "nsExceptionHandler.h"
#include "nsThreadUtils.h"
namespace mozilla {
namespace ipc {
// This is the newer replacement for CrashReporterParent. It is created in
// response to a InitCrashReporter message on a top-level actor, and simply
// holds the metadata shmem alive until the process ends. When the process
// terminates abnormally, the top-level should call GenerateCrashReport to
// automatically integrate metadata.
class CrashReporterHost
{
typedef mozilla::ipc::Shmem Shmem;
typedef CrashReporter::AnnotationTable AnnotationTable;
public:
CrashReporterHost(GeckoProcessType aProcessType,
const Shmem& aShmem,
CrashReporter::ThreadId aThreadId);
// Helper function for generating a crash report for a process that probably
// crashed (i.e., had an AbnormalShutdown in ActorDestroy). Returns true if
// the process has a minidump attached and we were able to generate a report.
bool GenerateCrashReport(base::ProcessId aPid);
// Given an existing minidump for a crashed child process, take ownership of
// it from IPDL. After this, FinalizeCrashReport may be called.
RefPtr<nsIFile> TakeCrashedChildMinidump(base::ProcessId aPid, uint32_t* aOutSequence);
// Replace the stored minidump with a new one. After this,
// FinalizeCrashReport may be called.
bool AdoptMinidump(nsIFile* aFile);
// If a minidump was already captured (e.g. via the hang reporter), this
// finalizes the existing report by attaching metadata and notifying the
// crash service.
bool FinalizeCrashReport();
// Generate a paired minidump. This does not take the crash report, as
// GenerateCrashReport does. After this, FinalizeCrashReport may be called.
//
// This calls TakeCrashedChildMinidump and FinalizeCrashReport.
template <typename Toplevel>
bool GenerateMinidumpAndPair(Toplevel* aToplevelProtocol,
nsIFile* aMinidumpToPair,
const nsACString& aPairName)
{
ScopedProcessHandle childHandle;
#ifdef XP_MACOSX
childHandle = aToplevelProtocol->Process()->GetChildTask();
#else
if (!base::OpenPrivilegedProcessHandle(aToplevelProtocol->OtherPid(),
&childHandle.rwget()))
{
NS_WARNING("Failed to open child process handle.");
return false;
}
#endif
nsCOMPtr<nsIFile> targetDump;
if (!CrashReporter::CreateMinidumpsAndPair(childHandle,
mThreadId,
aPairName,
aMinidumpToPair,
getter_AddRefs(targetDump)))
{
return false;
}
return CrashReporter::GetIDFromMinidump(targetDump, mDumpID);
}
void AddAnnotation(CrashReporter::Annotation aKey, bool aValue);
void AddAnnotation(CrashReporter::Annotation aKey, int aValue);
void AddAnnotation(CrashReporter::Annotation aKey, unsigned int aValue);
void AddAnnotation(CrashReporter::Annotation aKey, const nsCString& aValue);
bool HasMinidump() const {
return !mDumpID.IsEmpty();
}
const nsString& MinidumpID() const {
MOZ_ASSERT(HasMinidump());
return mDumpID;
}
private:
static void AsyncAddCrash(int32_t aProcessType, int32_t aCrashType,
const nsString& aChildDumpID);
// Get the nsICrashService crash type to use for an impending crash.
int32_t GetCrashType(const CrashReporter::AnnotationTable& aAnnotations);
// This is a static helper function to notify the crash service that a
// crash has occurred. This can be called from any thread, and if not
// called from the main thread, will post a synchronous message to the
// main thread.
static void NotifyCrashService(
GeckoProcessType aProcessType,
int32_t aCrashType,
const nsString& aChildDumpID);
private:
GeckoProcessType mProcessType;
Shmem mShmem;
CrashReporter::ThreadId mThreadId;
time_t mStartTime;
AnnotationTable mExtraAnnotations;
nsString mDumpID;
bool mFinalized;
};
} // namespace ipc
} // namespace mozilla
#endif // mozilla_ipc_CrashReporterHost_h