1 /*
2 * Copyright (C) 2007-2009 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 "bindings/v8/ScheduledAction.h"
33
34 #include "bindings/v8/ScriptController.h"
35 #include "bindings/v8/ScriptSourceCode.h"
36 #include "bindings/v8/V8Binding.h"
37 #include "bindings/v8/V8GCController.h"
38 #include "bindings/v8/V8ScriptRunner.h"
39 #include "core/dom/Document.h"
40 #include "core/dom/ExecutionContext.h"
41 #include "core/frame/LocalFrame.h"
42 #include "core/workers/WorkerGlobalScope.h"
43 #include "core/workers/WorkerThread.h"
44 #include "platform/TraceEvent.h"
45
46 namespace WebCore {
47
ScheduledAction(ScriptState * scriptState,v8::Handle<v8::Function> function,int argc,v8::Handle<v8::Value> argv[],v8::Isolate * isolate)48 ScheduledAction::ScheduledAction(ScriptState* scriptState, v8::Handle<v8::Function> function, int argc, v8::Handle<v8::Value> argv[], v8::Isolate* isolate)
49 : m_scriptState(scriptState)
50 , m_function(isolate, function)
51 , m_info(isolate)
52 , m_code(String(), KURL(), TextPosition::belowRangePosition())
53 {
54 m_info.ReserveCapacity(argc);
55 for (int i = 0; i < argc; ++i)
56 m_info.Append(argv[i]);
57 }
58
ScheduledAction(ScriptState * scriptState,const String & code,const KURL & url,v8::Isolate * isolate)59 ScheduledAction::ScheduledAction(ScriptState* scriptState, const String& code, const KURL& url, v8::Isolate* isolate)
60 : m_scriptState(scriptState)
61 , m_info(isolate)
62 , m_code(code, url)
63 {
64 }
65
~ScheduledAction()66 ScheduledAction::~ScheduledAction()
67 {
68 }
69
execute(ExecutionContext * context)70 void ScheduledAction::execute(ExecutionContext* context)
71 {
72 if (context->isDocument()) {
73 LocalFrame* frame = toDocument(context)->frame();
74 if (!frame)
75 return;
76 if (!frame->script().canExecuteScripts(AboutToExecuteScript))
77 return;
78 execute(frame);
79 } else {
80 execute(toWorkerGlobalScope(context));
81 }
82 }
83
execute(LocalFrame * frame)84 void ScheduledAction::execute(LocalFrame* frame)
85 {
86 if (m_scriptState->contextIsEmpty())
87 return;
88
89 TRACE_EVENT0("v8", "ScheduledAction::execute");
90 ScriptState::Scope scope(m_scriptState.get());
91 if (!m_function.isEmpty()) {
92 Vector<v8::Handle<v8::Value> > info;
93 createLocalHandlesForArgs(&info);
94 frame->script().callFunction(m_function.newLocal(m_scriptState->isolate()), m_scriptState->context()->Global(), info.size(), info.data());
95 } else {
96 frame->script().executeScriptAndReturnValue(m_scriptState->context(), ScriptSourceCode(m_code));
97 }
98
99 // The frame might be invalid at this point because JavaScript could have released it.
100 }
101
execute(WorkerGlobalScope * worker)102 void ScheduledAction::execute(WorkerGlobalScope* worker)
103 {
104 ASSERT(worker->thread()->isCurrentThread());
105 ASSERT(!m_scriptState->contextIsEmpty());
106 if (!m_function.isEmpty()) {
107 ScriptState::Scope scope(m_scriptState.get());
108 Vector<v8::Handle<v8::Value> > info;
109 createLocalHandlesForArgs(&info);
110 V8ScriptRunner::callFunction(m_function.newLocal(m_scriptState->isolate()), worker, m_scriptState->context()->Global(), info.size(), info.data(), m_scriptState->isolate());
111 } else {
112 worker->script()->evaluate(m_code);
113 }
114 }
115
createLocalHandlesForArgs(Vector<v8::Handle<v8::Value>> * handles)116 void ScheduledAction::createLocalHandlesForArgs(Vector<v8::Handle<v8::Value> >* handles)
117 {
118 handles->reserveCapacity(m_info.Size());
119 for (size_t i = 0; i < m_info.Size(); ++i)
120 handles->append(m_info.Get(i));
121 }
122
123 } // namespace WebCore
124