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110 lines
3.4 KiB
C++
110 lines
3.4 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 "nsExceptionHandler.h"
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#include "nsString.h"
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#include "nsIObserverService.h"
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#include "nsIObserver.h"
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#include "nsAutoPtr.h"
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#include "nsServiceManagerUtils.h"
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#include "mozilla/Services.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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static nsTArray<nsCString> *gFeaturesAlreadyReported = nullptr;
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class ObserverToDestroyFeaturesAlreadyReported : 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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virtual ~ObserverToDestroyFeaturesAlreadyReported() {}
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};
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NS_IMPL_ISUPPORTS1(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 PRUnichar* aData)
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{
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if (!strcmp(aTopic, "xpcom-shutdown")) {
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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 ScopedGfxFeatureReporter::AppNoteWritingRunnable : public nsRunnable {
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public:
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AppNoteWritingRunnable(char aStatusChar, const char *aFeature) :
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mStatusChar(aStatusChar), mFeature(aFeature) {}
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NS_IMETHOD Run() {
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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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if (!gFeaturesAlreadyReported) {
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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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nsRefPtr<ObserverToDestroyFeaturesAlreadyReported> observer = new ObserverToDestroyFeaturesAlreadyReported;
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nsresult rv = observerService->AddObserver(observer, "xpcom-shutdown", false);
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if (NS_FAILED(rv)) {
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observer = nullptr;
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return NS_OK;
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}
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gFeaturesAlreadyReported = new nsTArray<nsCString>;
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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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mStatusChar);
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if (!gFeaturesAlreadyReported->Contains(featureString)) {
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gFeaturesAlreadyReported->AppendElement(featureString);
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CrashReporter::AppendAppNotesToCrashReport(featureString);
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}
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return NS_OK;
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}
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private:
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char mStatusChar;
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const char *mFeature;
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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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nsCOMPtr<nsIRunnable> r = new AppNoteWritingRunnable(statusChar, mFeature);
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NS_DispatchToMainThread(r.get(), NS_DISPATCH_NORMAL);
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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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}
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#endif
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