135 lines
4.5 KiB
C++
135 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "gfxCrashReporterUtils.h"
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#if defined(MOZ_CRASHREPORTER)
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#define MOZ_GFXFEATUREREPORTER 1
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#endif
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#ifdef MOZ_GFXFEATUREREPORTER
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#include "gfxCrashReporterUtils.h"
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#include <string.h> // for strcmp
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#include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2
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#include "mozilla/Services.h" // for GetObserverService
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#include "mozilla/StaticMutex.h"
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#include "mozilla/mozalloc.h" // for operator new, etc
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#include "nsAutoPtr.h" // for nsRefPtr
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#include "nsCOMPtr.h" // for nsCOMPtr
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#include "nsError.h" // for NS_OK, NS_FAILED, nsresult
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#include "nsExceptionHandler.h" // for AppendAppNotesToCrashReport
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#include "nsID.h"
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#include "nsIEventTarget.h" // for NS_DISPATCH_NORMAL
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#include "nsIObserver.h" // for nsIObserver, etc
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#include "nsIObserverService.h" // for nsIObserverService
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#include "nsIRunnable.h" // for nsIRunnable
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#include "nsISupports.h"
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#include "nsString.h" // for nsAutoCString, nsCString, etc
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#include "nsTArray.h" // for nsTArray
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#include "nsThreadUtils.h" // for NS_DispatchToMainThread, etc
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#include "nscore.h" // for NS_IMETHOD, NS_IMETHODIMP, etc
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namespace mozilla {
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static nsTArray<nsCString> *gFeaturesAlreadyReported = nullptr;
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static StaticMutex gFeaturesAlreadyReportedMutex;
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class ObserverToDestroyFeaturesAlreadyReported final : public nsIObserver
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIOBSERVER
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ObserverToDestroyFeaturesAlreadyReported() {}
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private:
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virtual ~ObserverToDestroyFeaturesAlreadyReported() {}
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};
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NS_IMPL_ISUPPORTS(ObserverToDestroyFeaturesAlreadyReported,
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nsIObserver)
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NS_IMETHODIMP
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ObserverToDestroyFeaturesAlreadyReported::Observe(nsISupports* aSubject,
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const char* aTopic,
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const char16_t* aData)
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{
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if (!strcmp(aTopic, "xpcom-shutdown")) {
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StaticMutexAutoLock al(gFeaturesAlreadyReportedMutex);
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if (gFeaturesAlreadyReported) {
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delete gFeaturesAlreadyReported;
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gFeaturesAlreadyReported = nullptr;
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}
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}
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return NS_OK;
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}
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class RegisterObserverRunnable : public nsRunnable {
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public:
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NS_IMETHOD Run() override {
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// LeakLog made me do this. Basically, I just wanted gFeaturesAlreadyReported to be a static nsTArray<nsCString>,
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// and LeakLog was complaining about leaks like this:
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// leaked 1 instance of nsTArray_base with size 8 bytes
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// leaked 7 instances of nsStringBuffer with size 8 bytes each (56 bytes total)
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// So this is a work-around using a pointer, and using a nsIObserver to deallocate on xpcom shutdown.
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// Yay for fighting bloat.
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nsCOMPtr<nsIObserverService> observerService = mozilla::services::GetObserverService();
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if (!observerService)
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return NS_OK;
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RefPtr<ObserverToDestroyFeaturesAlreadyReported> observer = new ObserverToDestroyFeaturesAlreadyReported;
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observerService->AddObserver(observer, "xpcom-shutdown", false);
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return NS_OK;
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}
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};
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class AppendAppNotesRunnable : public nsCancelableRunnable {
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public:
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explicit AppendAppNotesRunnable(nsAutoCString aFeatureStr)
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: mFeatureString(aFeatureStr)
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{
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}
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NS_IMETHOD Run() override {
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CrashReporter::AppendAppNotesToCrashReport(mFeatureString);
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return NS_OK;
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}
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private:
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nsCString mFeatureString;
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};
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void
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ScopedGfxFeatureReporter::WriteAppNote(char statusChar)
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{
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StaticMutexAutoLock al(gFeaturesAlreadyReportedMutex);
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if (!gFeaturesAlreadyReported) {
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gFeaturesAlreadyReported = new nsTArray<nsCString>;
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nsCOMPtr<nsIRunnable> r = new RegisterObserverRunnable();
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NS_DispatchToMainThread(r);
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}
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nsAutoCString featureString;
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featureString.AppendPrintf("%s%c ",
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mFeature,
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statusChar);
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if (!gFeaturesAlreadyReported->Contains(featureString)) {
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gFeaturesAlreadyReported->AppendElement(featureString);
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nsCOMPtr<nsIRunnable> r = new AppendAppNotesRunnable(featureString);
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NS_DispatchToMainThread(r);
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}
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}
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} // end namespace mozilla
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#else
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namespace mozilla {
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void ScopedGfxFeatureReporter::WriteAppNote(char) {}
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} // namespace mozilla
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#endif
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