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1 /* | |
2 * Copyright (C) 2010 Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #include "config.h" | |
32 | |
33 | |
34 #include "bindings/v8/ScriptGCEvent.h" | |
35 #include "bindings/v8/V8Binding.h" | |
36 #include "core/inspector/ScriptGCEventListener.h" | |
37 | |
38 #include "wtf/CurrentTime.h" | |
39 | |
40 namespace WebCore { | |
41 | |
42 static GCEventData* isolateGCEventData() | |
43 { | |
44 V8PerIsolateData* isolateData = V8PerIsolateData::from(v8::Isolate::GetCurre
nt()); | |
45 ASSERT(isolateData); | |
46 return isolateData->gcEventData(); | |
47 } | |
48 | |
49 void ScriptGCEvent::addEventListener(ScriptGCEventListener* eventListener) | |
50 { | |
51 GCEventData::GCEventListeners& listeners = isolateGCEventData()->listeners()
; | |
52 if (listeners.isEmpty()) { | |
53 v8::V8::AddGCPrologueCallback(ScriptGCEvent::gcPrologueCallback); | |
54 v8::V8::AddGCEpilogueCallback(ScriptGCEvent::gcEpilogueCallback); | |
55 } | |
56 listeners.append(eventListener); | |
57 } | |
58 | |
59 void ScriptGCEvent::removeEventListener(ScriptGCEventListener* eventListener) | |
60 { | |
61 ASSERT(eventListener); | |
62 GCEventData::GCEventListeners& listeners = isolateGCEventData()->listeners()
; | |
63 ASSERT(!listeners.isEmpty()); | |
64 size_t i = listeners.find(eventListener); | |
65 ASSERT(i != kNotFound); | |
66 listeners.remove(i); | |
67 if (listeners.isEmpty()) { | |
68 v8::V8::RemoveGCPrologueCallback(ScriptGCEvent::gcPrologueCallback); | |
69 v8::V8::RemoveGCEpilogueCallback(ScriptGCEvent::gcEpilogueCallback); | |
70 } | |
71 } | |
72 | |
73 void ScriptGCEvent::getHeapSize(HeapInfo& info) | |
74 { | |
75 v8::HeapStatistics heapStatistics; | |
76 v8::Isolate::GetCurrent()->GetHeapStatistics(&heapStatistics); | |
77 info.usedJSHeapSize = heapStatistics.used_heap_size(); | |
78 info.totalJSHeapSize = heapStatistics.total_physical_size(); | |
79 info.jsHeapSizeLimit = heapStatistics.heap_size_limit(); | |
80 } | |
81 | |
82 size_t ScriptGCEvent::getUsedHeapSize() | |
83 { | |
84 v8::HeapStatistics heapStatistics; | |
85 v8::Isolate::GetCurrent()->GetHeapStatistics(&heapStatistics); | |
86 return heapStatistics.used_heap_size(); | |
87 } | |
88 | |
89 void ScriptGCEvent::gcPrologueCallback(v8::GCType type, v8::GCCallbackFlags flag
s) | |
90 { | |
91 GCEventData* gcEventData = isolateGCEventData(); | |
92 gcEventData->setStartTime(WTF::monotonicallyIncreasingTime()); | |
93 gcEventData->setUsedHeapSize(getUsedHeapSize()); | |
94 } | |
95 | |
96 void ScriptGCEvent::gcEpilogueCallback(v8::GCType type, v8::GCCallbackFlags flag
s) | |
97 { | |
98 GCEventData* gcEventData = isolateGCEventData(); | |
99 if (!gcEventData->usedHeapSize()) | |
100 return; | |
101 double endTime = WTF::monotonicallyIncreasingTime(); | |
102 size_t usedHeapSize = getUsedHeapSize(); | |
103 size_t collectedBytes = usedHeapSize > gcEventData->usedHeapSize() ? 0 : gcE
ventData->usedHeapSize() - usedHeapSize; | |
104 GCEventData::GCEventListeners& listeners = gcEventData->listeners(); | |
105 for (GCEventData::GCEventListeners::iterator i = listeners.begin(); i != lis
teners.end(); ++i) | |
106 (*i)->didGC(gcEventData->startTime(), endTime, collectedBytes); | |
107 gcEventData->clear(); | |
108 } | |
109 | |
110 } // namespace WebCore | |
111 | |
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