The Tor Browser / file comparison
comparison: gfx/src/gfxCrashReporterUtils.cpp
gfx/src/gfxCrashReporterUtils.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:61159ff45db8 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "gfxCrashReporterUtils.h" | |
| 7 | |
| 8 #if defined(MOZ_CRASHREPORTER) | |
| 9 #define MOZ_GFXFEATUREREPORTER 1 | |
| 10 #endif | |
| 11 | |
| 12 #ifdef MOZ_GFXFEATUREREPORTER | |
| 13 #include "gfxCrashReporterUtils.h" | |
| 14 #include <string.h> // for strcmp | |
| 15 #include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2 | |
| 16 #include "mozilla/Services.h" // for GetObserverService | |
| 17 #include "mozilla/mozalloc.h" // for operator new, etc | |
| 18 #include "nsAutoPtr.h" // for nsRefPtr | |
| 19 #include "nsCOMPtr.h" // for nsCOMPtr | |
| 20 #include "nsError.h" // for NS_OK, NS_FAILED, nsresult | |
| 21 #include "nsExceptionHandler.h" // for AppendAppNotesToCrashReport | |
| 22 #include "nsID.h" | |
| 23 #include "nsIEventTarget.h" // for NS_DISPATCH_NORMAL | |
| 24 #include "nsIObserver.h" // for nsIObserver, etc | |
| 25 #include "nsIObserverService.h" // for nsIObserverService | |
| 26 #include "nsIRunnable.h" // for nsIRunnable | |
| 27 #include "nsISupports.h" | |
| 28 #include "nsString.h" // for nsAutoCString, nsCString, etc | |
| 29 #include "nsTArray.h" // for nsTArray | |
| 30 #include "nsThreadUtils.h" // for NS_DispatchToMainThread, etc | |
| 31 #include "nscore.h" // for NS_IMETHOD, NS_IMETHODIMP, etc | |
| 32 | |
| 33 namespace mozilla { | |
| 34 | |
| 35 static nsTArray<nsCString> *gFeaturesAlreadyReported = nullptr; | |
| 36 | |
| 37 class ObserverToDestroyFeaturesAlreadyReported : public nsIObserver | |
| 38 { | |
| 39 | |
| 40 public: | |
| 41 NS_DECL_ISUPPORTS | |
| 42 NS_DECL_NSIOBSERVER | |
| 43 | |
| 44 ObserverToDestroyFeaturesAlreadyReported() {} | |
| 45 virtual ~ObserverToDestroyFeaturesAlreadyReported() {} | |
| 46 }; | |
| 47 | |
| 48 NS_IMPL_ISUPPORTS(ObserverToDestroyFeaturesAlreadyReported, | |
| 49 nsIObserver) | |
| 50 | |
| 51 NS_IMETHODIMP | |
| 52 ObserverToDestroyFeaturesAlreadyReported::Observe(nsISupports* aSubject, | |
| 53 const char* aTopic, | |
| 54 const char16_t* aData) | |
| 55 { | |
| 56 if (!strcmp(aTopic, "xpcom-shutdown")) { | |
| 57 if (gFeaturesAlreadyReported) { | |
| 58 delete gFeaturesAlreadyReported; | |
| 59 gFeaturesAlreadyReported = nullptr; | |
| 60 } | |
| 61 } | |
| 62 return NS_OK; | |
| 63 } | |
| 64 | |
| 65 class ScopedGfxFeatureReporter::AppNoteWritingRunnable : public nsRunnable { | |
| 66 public: | |
| 67 AppNoteWritingRunnable(char aStatusChar, const char *aFeature) : | |
| 68 mStatusChar(aStatusChar), mFeature(aFeature) {} | |
| 69 NS_IMETHOD Run() { | |
| 70 // LeakLog made me do this. Basically, I just wanted gFeaturesAlreadyReported to be a static nsTArray<nsCString>, | |
| 71 // and LeakLog was complaining about leaks like this: | |
| 72 // leaked 1 instance of nsTArray_base with size 8 bytes | |
| 73 // leaked 7 instances of nsStringBuffer with size 8 bytes each (56 bytes total) | |
| 74 // So this is a work-around using a pointer, and using a nsIObserver to deallocate on xpcom shutdown. | |
| 75 // Yay for fighting bloat. | |
| 76 if (!gFeaturesAlreadyReported) { | |
| 77 nsCOMPtr<nsIObserverService> observerService = mozilla::services::GetObserverService(); | |
| 78 if (!observerService) | |
| 79 return NS_OK; | |
| 80 nsRefPtr<ObserverToDestroyFeaturesAlreadyReported> observer = new ObserverToDestroyFeaturesAlreadyReported; | |
| 81 nsresult rv = observerService->AddObserver(observer, "xpcom-shutdown", false); | |
| 82 if (NS_FAILED(rv)) { | |
| 83 observer = nullptr; | |
| 84 return NS_OK; | |
| 85 } | |
| 86 gFeaturesAlreadyReported = new nsTArray<nsCString>; | |
| 87 } | |
| 88 | |
| 89 nsAutoCString featureString; | |
| 90 featureString.AppendPrintf("%s%c ", | |
| 91 mFeature, | |
| 92 mStatusChar); | |
| 93 | |
| 94 if (!gFeaturesAlreadyReported->Contains(featureString)) { | |
| 95 gFeaturesAlreadyReported->AppendElement(featureString); | |
| 96 CrashReporter::AppendAppNotesToCrashReport(featureString); | |
| 97 } | |
| 98 return NS_OK; | |
| 99 } | |
| 100 private: | |
| 101 char mStatusChar; | |
| 102 const char *mFeature; | |
| 103 }; | |
| 104 | |
| 105 void | |
| 106 ScopedGfxFeatureReporter::WriteAppNote(char statusChar) | |
| 107 { | |
| 108 nsCOMPtr<nsIRunnable> r = new AppNoteWritingRunnable(statusChar, mFeature); | |
| 109 NS_DispatchToMainThread(r.get(), NS_DISPATCH_NORMAL); | |
| 110 } | |
| 111 | |
| 112 } // end namespace mozilla | |
| 113 | |
| 114 #else | |
| 115 | |
| 116 namespace mozilla { | |
| 117 void ScopedGfxFeatureReporter::WriteAppNote(char) {} | |
| 118 } | |
| 119 | |
| 120 #endif |
