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 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 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 66 ScheduledAction::~ScheduledAction() 67 { 68 } 69 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 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 } 101 102 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 } 115 116 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