1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/src/gfxCrashReporterUtils.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,120 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "gfxCrashReporterUtils.h"
1.10 +
1.11 +#if defined(MOZ_CRASHREPORTER)
1.12 +#define MOZ_GFXFEATUREREPORTER 1
1.13 +#endif
1.14 +
1.15 +#ifdef MOZ_GFXFEATUREREPORTER
1.16 +#include "gfxCrashReporterUtils.h"
1.17 +#include <string.h> // for strcmp
1.18 +#include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2
1.19 +#include "mozilla/Services.h" // for GetObserverService
1.20 +#include "mozilla/mozalloc.h" // for operator new, etc
1.21 +#include "nsAutoPtr.h" // for nsRefPtr
1.22 +#include "nsCOMPtr.h" // for nsCOMPtr
1.23 +#include "nsError.h" // for NS_OK, NS_FAILED, nsresult
1.24 +#include "nsExceptionHandler.h" // for AppendAppNotesToCrashReport
1.25 +#include "nsID.h"
1.26 +#include "nsIEventTarget.h" // for NS_DISPATCH_NORMAL
1.27 +#include "nsIObserver.h" // for nsIObserver, etc
1.28 +#include "nsIObserverService.h" // for nsIObserverService
1.29 +#include "nsIRunnable.h" // for nsIRunnable
1.30 +#include "nsISupports.h"
1.31 +#include "nsString.h" // for nsAutoCString, nsCString, etc
1.32 +#include "nsTArray.h" // for nsTArray
1.33 +#include "nsThreadUtils.h" // for NS_DispatchToMainThread, etc
1.34 +#include "nscore.h" // for NS_IMETHOD, NS_IMETHODIMP, etc
1.35 +
1.36 +namespace mozilla {
1.37 +
1.38 +static nsTArray<nsCString> *gFeaturesAlreadyReported = nullptr;
1.39 +
1.40 +class ObserverToDestroyFeaturesAlreadyReported : public nsIObserver
1.41 +{
1.42 +
1.43 +public:
1.44 + NS_DECL_ISUPPORTS
1.45 + NS_DECL_NSIOBSERVER
1.46 +
1.47 + ObserverToDestroyFeaturesAlreadyReported() {}
1.48 + virtual ~ObserverToDestroyFeaturesAlreadyReported() {}
1.49 +};
1.50 +
1.51 +NS_IMPL_ISUPPORTS(ObserverToDestroyFeaturesAlreadyReported,
1.52 + nsIObserver)
1.53 +
1.54 +NS_IMETHODIMP
1.55 +ObserverToDestroyFeaturesAlreadyReported::Observe(nsISupports* aSubject,
1.56 + const char* aTopic,
1.57 + const char16_t* aData)
1.58 +{
1.59 + if (!strcmp(aTopic, "xpcom-shutdown")) {
1.60 + if (gFeaturesAlreadyReported) {
1.61 + delete gFeaturesAlreadyReported;
1.62 + gFeaturesAlreadyReported = nullptr;
1.63 + }
1.64 + }
1.65 + return NS_OK;
1.66 +}
1.67 +
1.68 +class ScopedGfxFeatureReporter::AppNoteWritingRunnable : public nsRunnable {
1.69 +public:
1.70 + AppNoteWritingRunnable(char aStatusChar, const char *aFeature) :
1.71 + mStatusChar(aStatusChar), mFeature(aFeature) {}
1.72 + NS_IMETHOD Run() {
1.73 + // LeakLog made me do this. Basically, I just wanted gFeaturesAlreadyReported to be a static nsTArray<nsCString>,
1.74 + // and LeakLog was complaining about leaks like this:
1.75 + // leaked 1 instance of nsTArray_base with size 8 bytes
1.76 + // leaked 7 instances of nsStringBuffer with size 8 bytes each (56 bytes total)
1.77 + // So this is a work-around using a pointer, and using a nsIObserver to deallocate on xpcom shutdown.
1.78 + // Yay for fighting bloat.
1.79 + if (!gFeaturesAlreadyReported) {
1.80 + nsCOMPtr<nsIObserverService> observerService = mozilla::services::GetObserverService();
1.81 + if (!observerService)
1.82 + return NS_OK;
1.83 + nsRefPtr<ObserverToDestroyFeaturesAlreadyReported> observer = new ObserverToDestroyFeaturesAlreadyReported;
1.84 + nsresult rv = observerService->AddObserver(observer, "xpcom-shutdown", false);
1.85 + if (NS_FAILED(rv)) {
1.86 + observer = nullptr;
1.87 + return NS_OK;
1.88 + }
1.89 + gFeaturesAlreadyReported = new nsTArray<nsCString>;
1.90 + }
1.91 +
1.92 + nsAutoCString featureString;
1.93 + featureString.AppendPrintf("%s%c ",
1.94 + mFeature,
1.95 + mStatusChar);
1.96 +
1.97 + if (!gFeaturesAlreadyReported->Contains(featureString)) {
1.98 + gFeaturesAlreadyReported->AppendElement(featureString);
1.99 + CrashReporter::AppendAppNotesToCrashReport(featureString);
1.100 + }
1.101 + return NS_OK;
1.102 + }
1.103 +private:
1.104 + char mStatusChar;
1.105 + const char *mFeature;
1.106 +};
1.107 +
1.108 +void
1.109 +ScopedGfxFeatureReporter::WriteAppNote(char statusChar)
1.110 +{
1.111 + nsCOMPtr<nsIRunnable> r = new AppNoteWritingRunnable(statusChar, mFeature);
1.112 + NS_DispatchToMainThread(r.get(), NS_DISPATCH_NORMAL);
1.113 +}
1.114 +
1.115 +} // end namespace mozilla
1.116 +
1.117 +#else
1.118 +
1.119 +namespace mozilla {
1.120 +void ScopedGfxFeatureReporter::WriteAppNote(char) {}
1.121 +}
1.122 +
1.123 +#endif
