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a1f6255102
This reverts the changes in bug 1360308, bug 1390143 and bug 1469603. Minidump generation will now only happen on the main process' main thread which might lead to hangs but is known to be fairly robust. Asynchronous generation proved too brittle and enormously increased the complexity of this already hard-to-read code. Differential Revision: https://phabricator.services.mozilla.com/D5147 --HG-- extra : moz-landing-system : lando
132 lines
4.6 KiB
C++
132 lines
4.6 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_CrashReporterHost_h
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#define mozilla_ipc_CrashReporterHost_h
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#include <functional>
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#include "mozilla/UniquePtr.h"
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#include "mozilla/ipc/Shmem.h"
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#include "base/process.h"
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#include "nsExceptionHandler.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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namespace ipc {
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// This is the newer replacement for CrashReporterParent. It is created in
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// response to a InitCrashReporter message on a top-level actor, and simply
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// holds the metadata shmem alive until the process ends. When the process
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// terminates abnormally, the top-level should call GenerateCrashReport to
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// automatically integrate metadata.
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class CrashReporterHost
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{
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typedef mozilla::ipc::Shmem Shmem;
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typedef CrashReporter::AnnotationTable AnnotationTable;
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public:
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CrashReporterHost(GeckoProcessType aProcessType,
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const Shmem& aShmem,
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CrashReporter::ThreadId aThreadId);
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// Helper function for generating a crash report for a process that probably
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// crashed (i.e., had an AbnormalShutdown in ActorDestroy). Returns true if
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// the process has a minidump attached and we were able to generate a report.
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bool GenerateCrashReport(base::ProcessId aPid);
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// Given an existing minidump for a crashed child process, take ownership of
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// it from IPDL. After this, FinalizeCrashReport may be called.
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RefPtr<nsIFile> TakeCrashedChildMinidump(base::ProcessId aPid, uint32_t* aOutSequence);
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// Replace the stored minidump with a new one. After this,
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// FinalizeCrashReport may be called.
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bool AdoptMinidump(nsIFile* aFile);
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// If a minidump was already captured (e.g. via the hang reporter), this
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// finalizes the existing report by attaching metadata and notifying the
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// crash service.
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bool FinalizeCrashReport();
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// Generate a paired minidump. This does not take the crash report, as
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// GenerateCrashReport does. After this, FinalizeCrashReport may be called.
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//
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// This calls TakeCrashedChildMinidump and FinalizeCrashReport.
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template <typename Toplevel>
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bool GenerateMinidumpAndPair(Toplevel* aToplevelProtocol,
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nsIFile* aMinidumpToPair,
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const nsACString& aPairName)
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{
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ScopedProcessHandle childHandle;
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#ifdef XP_MACOSX
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childHandle = aToplevelProtocol->Process()->GetChildTask();
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#else
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if (!base::OpenPrivilegedProcessHandle(aToplevelProtocol->OtherPid(),
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&childHandle.rwget()))
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{
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NS_WARNING("Failed to open child process handle.");
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return false;
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}
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#endif
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nsCOMPtr<nsIFile> targetDump;
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if (!CrashReporter::CreateMinidumpsAndPair(childHandle,
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mThreadId,
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aPairName,
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aMinidumpToPair,
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getter_AddRefs(targetDump)))
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{
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return false;
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}
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return CrashReporter::GetIDFromMinidump(targetDump, mDumpID);
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}
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void AddAnnotation(CrashReporter::Annotation aKey, bool aValue);
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void AddAnnotation(CrashReporter::Annotation aKey, int aValue);
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void AddAnnotation(CrashReporter::Annotation aKey, unsigned int aValue);
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void AddAnnotation(CrashReporter::Annotation aKey, const nsCString& aValue);
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bool HasMinidump() const {
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return !mDumpID.IsEmpty();
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}
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const nsString& MinidumpID() const {
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MOZ_ASSERT(HasMinidump());
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return mDumpID;
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}
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private:
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static void AsyncAddCrash(int32_t aProcessType, int32_t aCrashType,
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const nsString& aChildDumpID);
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// Get the nsICrashService crash type to use for an impending crash.
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int32_t GetCrashType(const CrashReporter::AnnotationTable& aAnnotations);
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// This is a static helper function to notify the crash service that a
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// crash has occurred. This can be called from any thread, and if not
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// called from the main thread, will post a synchronous message to the
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// main thread.
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static void NotifyCrashService(
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GeckoProcessType aProcessType,
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int32_t aCrashType,
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const nsString& aChildDumpID);
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private:
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GeckoProcessType mProcessType;
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Shmem mShmem;
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CrashReporter::ThreadId mThreadId;
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time_t mStartTime;
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AnnotationTable mExtraAnnotations;
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nsString mDumpID;
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bool mFinalized;
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};
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} // namespace ipc
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} // namespace mozilla
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#endif // mozilla_ipc_CrashReporterHost_h
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