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/core/v8/ScheduledAction.h" 33 34 #include "bindings/core/v8/ScriptController.h" 35 #include "bindings/core/v8/ScriptSourceCode.h" 36 #include "bindings/core/v8/V8Binding.h" 37 #include "bindings/core/v8/V8GCController.h" 38 #include "bindings/core/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/Logging.h" 45 #include "platform/TraceEvent.h" 46 47 namespace blink { 48 49 ScheduledAction::ScheduledAction(ScriptState* scriptState, v8::Handle<v8::Function> function, int argc, v8::Handle<v8::Value> argv[], v8::Isolate* isolate) 50 : m_scriptState(scriptState) 51 , m_function(isolate, function) 52 , m_info(isolate) 53 , m_code(String(), KURL(), TextPosition::belowRangePosition()) 54 { 55 m_info.ReserveCapacity(argc); 56 for (int i = 0; i < argc; ++i) 57 m_info.Append(argv[i]); 58 } 59 60 ScheduledAction::ScheduledAction(ScriptState* scriptState, const String& code, const KURL& url, v8::Isolate* isolate) 61 : m_scriptState(scriptState) 62 , m_info(isolate) 63 , m_code(code, url) 64 { 65 } 66 67 ScheduledAction::~ScheduledAction() 68 { 69 } 70 71 void ScheduledAction::execute(ExecutionContext* context) 72 { 73 if (context->isDocument()) { 74 LocalFrame* frame = toDocument(context)->frame(); 75 if (!frame) { 76 WTF_LOG(Timers, "ScheduledAction::execute %p: no frame", this); 77 return; 78 } 79 if (!frame->script().canExecuteScripts(AboutToExecuteScript)) { 80 WTF_LOG(Timers, "ScheduledAction::execute %p: frame can not execute scripts", this); 81 return; 82 } 83 execute(frame); 84 } else { 85 WTF_LOG(Timers, "ScheduledAction::execute %p: worker scope", this); 86 execute(toWorkerGlobalScope(context)); 87 } 88 } 89 90 void ScheduledAction::execute(LocalFrame* frame) 91 { 92 if (m_scriptState->contextIsValid()) { 93 WTF_LOG(Timers, "ScheduledAction::execute %p: context is empty", this); 94 return; 95 } 96 97 TRACE_EVENT0("v8", "ScheduledAction::execute"); 98 ScriptState::Scope scope(m_scriptState.get()); 99 if (!m_function.isEmpty()) { 100 WTF_LOG(Timers, "ScheduledAction::execute %p: have function", this); 101 Vector<v8::Handle<v8::Value> > info; 102 createLocalHandlesForArgs(&info); 103 frame->script().callFunction(m_function.newLocal(m_scriptState->isolate()), m_scriptState->context()->Global(), info.size(), info.data()); 104 } else { 105 WTF_LOG(Timers, "ScheduledAction::execute %p: executing from source", this); 106 frame->script().executeScriptAndReturnValue(m_scriptState->context(), ScriptSourceCode(m_code)); 107 } 108 109 // The frame might be invalid at this point because JavaScript could have released it. 110 } 111 112 void ScheduledAction::execute(WorkerGlobalScope* worker) 113 { 114 ASSERT(worker->thread()->isCurrentThread()); 115 ASSERT(!m_scriptState->contextIsValid()); 116 if (!m_function.isEmpty()) { 117 ScriptState::Scope scope(m_scriptState.get()); 118 Vector<v8::Handle<v8::Value> > info; 119 createLocalHandlesForArgs(&info); 120 V8ScriptRunner::callFunction(m_function.newLocal(m_scriptState->isolate()), worker, m_scriptState->context()->Global(), info.size(), info.data(), m_scriptState->isolate()); 121 } else { 122 worker->script()->evaluate(m_code); 123 } 124 } 125 126 void ScheduledAction::createLocalHandlesForArgs(Vector<v8::Handle<v8::Value> >* handles) 127 { 128 handles->reserveCapacity(m_info.Size()); 129 for (size_t i = 0; i < m_info.Size(); ++i) 130 handles->append(m_info.Get(i)); 131 } 132 133 } // namespace blink 134
