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2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla Corporation code.
16 : *
17 : * The Initial Developer of the Original Code is Mozilla Foundation.
18 : * Portions created by the Initial Developer are Copyright (C) 2011
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Alternatively, the contents of this file may be used under the terms of
22 : * either of the GNU General Public License Version 2 or later (the "GPL"),
23 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
24 : * in which case the provisions of the GPL or the LGPL are applicable instead
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33 : * ***** END LICENSE BLOCK ***** */
34 :
35 : #include "gfxCrashReporterUtils.h"
36 :
37 : #if defined(MOZ_CRASHREPORTER)
38 : #define MOZ_GFXFEATUREREPORTER 1
39 : #endif
40 :
41 : #ifdef MOZ_GFXFEATUREREPORTER
42 : #include "nsExceptionHandler.h"
43 : #include "nsString.h"
44 : #include "nsIObserverService.h"
45 : #include "nsIObserver.h"
46 : #include "nsAutoPtr.h"
47 : #include "nsServiceManagerUtils.h"
48 : #include "mozilla/Services.h"
49 :
50 : namespace mozilla {
51 :
52 : static nsTArray<nsCString> *gFeaturesAlreadyReported = nsnull;
53 :
54 : class ObserverToDestroyFeaturesAlreadyReported : public nsIObserver
55 : {
56 :
57 : public:
58 : NS_DECL_ISUPPORTS
59 : NS_DECL_NSIOBSERVER
60 :
61 0 : ObserverToDestroyFeaturesAlreadyReported() {}
62 0 : virtual ~ObserverToDestroyFeaturesAlreadyReported() {}
63 : };
64 :
65 0 : NS_IMPL_ISUPPORTS1(ObserverToDestroyFeaturesAlreadyReported,
66 : nsIObserver)
67 :
68 : NS_IMETHODIMP
69 0 : ObserverToDestroyFeaturesAlreadyReported::Observe(nsISupports* aSubject,
70 : const char* aTopic,
71 : const PRUnichar* aData)
72 : {
73 0 : if (!strcmp(aTopic, "xpcom-shutdown")) {
74 0 : if (gFeaturesAlreadyReported) {
75 0 : delete gFeaturesAlreadyReported;
76 0 : gFeaturesAlreadyReported = nsnull;
77 : }
78 : }
79 0 : return NS_OK;
80 : }
81 :
82 :
83 : void
84 0 : ScopedGfxFeatureReporter::WriteAppNote(char statusChar)
85 : {
86 : // LeakLog made me do this. Basically, I just wanted gFeaturesAlreadyReported to be a static nsTArray<nsCString>,
87 : // and LeakLog was complaining about leaks like this:
88 : // leaked 1 instance of nsTArray_base with size 8 bytes
89 : // leaked 7 instances of nsStringBuffer with size 8 bytes each (56 bytes total)
90 : // So this is a work-around using a pointer, and using a nsIObserver to deallocate on xpcom shutdown.
91 : // Yay for fighting bloat.
92 0 : if (!gFeaturesAlreadyReported) {
93 0 : nsCOMPtr<nsIObserverService> observerService = mozilla::services::GetObserverService();
94 0 : if (!observerService)
95 : return;
96 0 : nsRefPtr<ObserverToDestroyFeaturesAlreadyReported> observer = new ObserverToDestroyFeaturesAlreadyReported;
97 0 : nsresult rv = observerService->AddObserver(observer, "xpcom-shutdown", false);
98 0 : if (NS_FAILED(rv)) {
99 0 : observer = nsnull;
100 : return;
101 : }
102 0 : gFeaturesAlreadyReported = new nsTArray<nsCString>;
103 : }
104 :
105 0 : nsCAutoString featureString;
106 : featureString.AppendPrintf("%s%c ",
107 : mFeature,
108 0 : statusChar);
109 :
110 0 : if (!gFeaturesAlreadyReported->Contains(featureString)) {
111 0 : gFeaturesAlreadyReported->AppendElement(featureString);
112 0 : CrashReporter::AppendAppNotesToCrashReport(featureString);
113 : }
114 : }
115 :
116 : } // end namespace mozilla
117 :
118 : #else
119 :
120 : namespace mozilla {
121 : void ScopedGfxFeatureReporter::WriteAppNote(char) {}
122 : }
123 :
124 : #endif
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