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 #include "ScriptProfiler.h"
33
34 #include "InspectorValues.h"
35 #include "RetainedDOMInfo.h"
36 #include "V8Binding.h"
37 #include "V8Node.h"
38
39 #include <v8-profiler.h>
40
41 namespace WebCore {
42
43 #if ENABLE(INSPECTOR)
start(ScriptState * state,const String & title)44 void ScriptProfiler::start(ScriptState* state, const String& title)
45 {
46 v8::HandleScope hs;
47 v8::CpuProfiler::StartProfiling(v8String(title));
48 }
49
stop(ScriptState * state,const String & title)50 PassRefPtr<ScriptProfile> ScriptProfiler::stop(ScriptState* state, const String& title)
51 {
52 v8::HandleScope hs;
53 const v8::CpuProfile* profile = state ?
54 v8::CpuProfiler::StopProfiling(v8String(title), state->context()->GetSecurityToken()) :
55 v8::CpuProfiler::StopProfiling(v8String(title));
56 return profile ? ScriptProfile::create(profile) : 0;
57 }
58
collectGarbage()59 void ScriptProfiler::collectGarbage()
60 {
61 // NOTE : There is currently no direct way to collect memory from the v8 C++ API
62 // but notifying low-memory forces a mark-compact, which is exactly what we want
63 // in this case.
64 v8::V8::LowMemoryNotification();
65 }
66
67 namespace {
68
69 class ActivityControlAdapter : public v8::ActivityControl {
70 public:
ActivityControlAdapter(ScriptProfiler::HeapSnapshotProgress * progress)71 ActivityControlAdapter(ScriptProfiler::HeapSnapshotProgress* progress)
72 : m_progress(progress), m_firstReport(true) { }
ReportProgressValue(int done,int total)73 ControlOption ReportProgressValue(int done, int total)
74 {
75 ControlOption result = m_progress->isCanceled() ? kAbort : kContinue;
76 if (m_firstReport) {
77 m_firstReport = false;
78 m_progress->Start(total);
79 } else
80 m_progress->Worked(done);
81 if (done >= total)
82 m_progress->Done();
83 return result;
84 }
85 private:
86 ScriptProfiler::HeapSnapshotProgress* m_progress;
87 bool m_firstReport;
88 };
89
90 } // namespace
91
takeHeapSnapshot(const String & title,HeapSnapshotProgress * control)92 PassRefPtr<ScriptHeapSnapshot> ScriptProfiler::takeHeapSnapshot(const String& title, HeapSnapshotProgress* control)
93 {
94 v8::HandleScope hs;
95 const v8::HeapSnapshot* snapshot = 0;
96 if (control) {
97 ActivityControlAdapter adapter(control);
98 snapshot = v8::HeapProfiler::TakeSnapshot(v8String(title), v8::HeapSnapshot::kFull, &adapter);
99 } else
100 snapshot = v8::HeapProfiler::TakeSnapshot(v8String(title), v8::HeapSnapshot::kAggregated);
101 return snapshot ? ScriptHeapSnapshot::create(snapshot) : 0;
102 }
103
retainedDOMInfo(uint16_t classId,v8::Handle<v8::Value> wrapper)104 static v8::RetainedObjectInfo* retainedDOMInfo(uint16_t classId, v8::Handle<v8::Value> wrapper)
105 {
106 ASSERT(classId == v8DOMSubtreeClassId);
107 if (!wrapper->IsObject())
108 return 0;
109 Node* node = V8Node::toNative(wrapper.As<v8::Object>());
110 return node ? new RetainedDOMInfo(node) : 0;
111 }
112 #endif // ENABLE(INSPECTOR)
113
initialize()114 void ScriptProfiler::initialize()
115 {
116 #if ENABLE(INSPECTOR)
117 v8::HeapProfiler::DefineWrapperClass(v8DOMSubtreeClassId, &retainedDOMInfo);
118 #endif // ENABLE(INSPECTOR)
119 }
120
121
122 } // namespace WebCore
123