1/* 2 * Copyright (c) 2011 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#if ENABLE(JAVASCRIPT_DEBUGGER) 34 35#include "PageScriptDebugServer.h" 36 37#include "EventLoop.h" 38#include "Frame.h" 39#include "FrameView.h" 40#include "JSDOMWindowCustom.h" 41#include "Page.h" 42#include "PageGroup.h" 43#include "PluginView.h" 44#include "ScriptController.h" 45#include "ScriptDebugListener.h" 46#include "Widget.h" 47#include <runtime/JSLock.h> 48#include <wtf/MainThread.h> 49#include <wtf/OwnPtr.h> 50#include <wtf/PassOwnPtr.h> 51#include <wtf/StdLibExtras.h> 52 53using namespace JSC; 54 55namespace WebCore { 56 57static Page* toPage(JSGlobalObject* globalObject) 58{ 59 ASSERT_ARG(globalObject, globalObject); 60 61 JSDOMWindow* window = asJSDOMWindow(globalObject); 62 Frame* frame = window->impl()->frame(); 63 return frame ? frame->page() : 0; 64} 65 66PageScriptDebugServer& PageScriptDebugServer::shared() 67{ 68 DEFINE_STATIC_LOCAL(PageScriptDebugServer, server, ()); 69 return server; 70} 71 72PageScriptDebugServer::PageScriptDebugServer() 73 : ScriptDebugServer() 74 , m_pausedPage(0) 75{ 76} 77 78PageScriptDebugServer::~PageScriptDebugServer() 79{ 80} 81 82void PageScriptDebugServer::addListener(ScriptDebugListener* listener, Page* page) 83{ 84 ASSERT_ARG(listener, listener); 85 ASSERT_ARG(page, page); 86 87 OwnPtr<ListenerSet>& listeners = m_pageListenersMap.add(page, nullptr).iterator->value; 88 if (!listeners) 89 listeners = adoptPtr(new ListenerSet); 90 listeners->add(listener); 91 92 recompileAllJSFunctionsSoon(); 93 page->setDebugger(this); 94} 95 96void PageScriptDebugServer::removeListener(ScriptDebugListener* listener, Page* page) 97{ 98 ASSERT_ARG(listener, listener); 99 ASSERT_ARG(page, page); 100 101 PageListenersMap::iterator it = m_pageListenersMap.find(page); 102 if (it == m_pageListenersMap.end()) 103 return; 104 105 ListenerSet* listeners = it->value.get(); 106 listeners->remove(listener); 107 if (listeners->isEmpty()) { 108 m_pageListenersMap.remove(it); 109 didRemoveLastListener(page); 110 } 111} 112 113void PageScriptDebugServer::recompileAllJSFunctions(Timer<ScriptDebugServer>*) 114{ 115 JSLockHolder lock(JSDOMWindow::commonVM()); 116 // If JavaScript stack is not empty postpone recompilation. 117 if (JSDOMWindow::commonVM()->dynamicGlobalObject) 118 recompileAllJSFunctionsSoon(); 119 else 120 Debugger::recompileAllJSFunctions(JSDOMWindow::commonVM()); 121} 122 123ScriptDebugServer::ListenerSet* PageScriptDebugServer::getListenersForGlobalObject(JSGlobalObject* globalObject) 124{ 125 Page* page = toPage(globalObject); 126 if (!page) 127 return 0; 128 return m_pageListenersMap.get(page); 129} 130 131void PageScriptDebugServer::didPause(JSC::JSGlobalObject* globalObject) 132{ 133 ASSERT(!m_pausedPage); 134 135 Page* page = toPage(globalObject); 136 ASSERT(page); 137 if (!page) 138 return; 139 140 m_pausedPage = page; 141 142 setJavaScriptPaused(page->group(), true); 143} 144 145void PageScriptDebugServer::didContinue(JSC::JSGlobalObject* globalObject) 146{ 147 // Page can be null if we are continuing because the Page closed. 148 Page* page = toPage(globalObject); 149 ASSERT(!page || page == m_pausedPage); 150 151 m_pausedPage = 0; 152 153 if (page) 154 setJavaScriptPaused(page->group(), false); 155} 156 157void PageScriptDebugServer::didRemoveLastListener(Page* page) 158{ 159 ASSERT(page); 160 161 if (m_pausedPage == page) 162 m_doneProcessingDebuggerEvents = true; 163 164 recompileAllJSFunctionsSoon(); 165 page->setDebugger(0); 166} 167 168void PageScriptDebugServer::runEventLoopWhilePaused() 169{ 170 EventLoop loop; 171 while (!m_doneProcessingDebuggerEvents && !loop.ended()) 172 loop.cycle(); 173} 174 175void PageScriptDebugServer::setJavaScriptPaused(const PageGroup& pageGroup, bool paused) 176{ 177 setMainThreadCallbacksPaused(paused); 178 179 const HashSet<Page*>& pages = pageGroup.pages(); 180 181 HashSet<Page*>::const_iterator end = pages.end(); 182 for (HashSet<Page*>::const_iterator it = pages.begin(); it != end; ++it) 183 setJavaScriptPaused(*it, paused); 184} 185 186void PageScriptDebugServer::setJavaScriptPaused(Page* page, bool paused) 187{ 188 ASSERT_ARG(page, page); 189 190 page->setDefersLoading(paused); 191 192 for (Frame* frame = page->mainFrame(); frame; frame = frame->tree()->traverseNext()) 193 setJavaScriptPaused(frame, paused); 194} 195 196void PageScriptDebugServer::setJavaScriptPaused(Frame* frame, bool paused) 197{ 198 ASSERT_ARG(frame, frame); 199 200 if (!frame->script()->canExecuteScripts(NotAboutToExecuteScript)) 201 return; 202 203 frame->script()->setPaused(paused); 204 205 Document* document = frame->document(); 206 if (paused) { 207 document->suspendScriptedAnimationControllerCallbacks(); 208 document->suspendActiveDOMObjects(ActiveDOMObject::JavaScriptDebuggerPaused); 209 } else { 210 document->resumeActiveDOMObjects(ActiveDOMObject::JavaScriptDebuggerPaused); 211 document->resumeScriptedAnimationControllerCallbacks(); 212 } 213 214 setJavaScriptPaused(frame->view(), paused); 215} 216 217void PageScriptDebugServer::setJavaScriptPaused(FrameView* view, bool paused) 218{ 219 if (!view) 220 return; 221 222 const HashSet<RefPtr<Widget> >* children = view->children(); 223 ASSERT(children); 224 225 HashSet<RefPtr<Widget> >::const_iterator end = children->end(); 226 for (HashSet<RefPtr<Widget> >::const_iterator it = children->begin(); it != end; ++it) { 227 Widget* widget = (*it).get(); 228 if (!widget->isPluginView()) 229 continue; 230 toPluginView(widget)->setJavaScriptPaused(paused); 231 } 232} 233 234} // namespace WebCore 235 236#endif // ENABLE(JAVASCRIPT_DEBUGGER) 237