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      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 #include "core/inspector/WorkerDebuggerAgent.h"
     33 
     34 #include "bindings/v8/ScriptDebugServer.h"
     35 #include "core/workers/WorkerGlobalScope.h"
     36 #include "core/workers/WorkerThread.h"
     37 #include "wtf/MessageQueue.h"
     38 
     39 namespace WebCore {
     40 
     41 namespace {
     42 
     43 Mutex& workerDebuggerAgentsMutex()
     44 {
     45     AtomicallyInitializedStatic(Mutex&, mutex = *new Mutex);
     46     return mutex;
     47 }
     48 
     49 typedef HashMap<WorkerThread*, WorkerDebuggerAgent*> WorkerDebuggerAgents;
     50 
     51 WorkerDebuggerAgents& workerDebuggerAgents()
     52 {
     53     DEFINE_STATIC_LOCAL(WorkerDebuggerAgents, agents, ());
     54     return agents;
     55 }
     56 
     57 
     58 class RunInspectorCommandsTask : public ScriptDebugServer::Task {
     59 public:
     60     RunInspectorCommandsTask(WorkerThread* thread, WorkerGlobalScope* workerGlobalScope)
     61         : m_thread(thread)
     62         , m_workerGlobalScope(workerGlobalScope) { }
     63     virtual ~RunInspectorCommandsTask() { }
     64     virtual void run()
     65     {
     66         // Process all queued debugger commands. It is safe to use m_workerGlobalScope here
     67         // because it is alive if RunWorkerLoop is not terminated, otherwise it will
     68         // just be ignored. WorkerThread is certainly alive if this task is being executed.
     69         while (MessageQueueMessageReceived == m_thread->runLoop().runInMode(m_workerGlobalScope, WorkerDebuggerAgent::debuggerTaskMode, WorkerRunLoop::DontWaitForMessage)) { }
     70     }
     71 
     72 private:
     73     WorkerThread* m_thread;
     74     WorkerGlobalScope* m_workerGlobalScope;
     75 };
     76 
     77 } // namespace
     78 
     79 const char* WorkerDebuggerAgent::debuggerTaskMode = "debugger";
     80 
     81 PassOwnPtr<WorkerDebuggerAgent> WorkerDebuggerAgent::create(InstrumentingAgents* instrumentingAgents, InspectorCompositeState* inspectorState, WorkerScriptDebugServer* scriptDebugServer, WorkerGlobalScope* inspectedWorkerGlobalScope, InjectedScriptManager* injectedScriptManager)
     82 {
     83     return adoptPtr(new WorkerDebuggerAgent(instrumentingAgents, inspectorState, scriptDebugServer, inspectedWorkerGlobalScope, injectedScriptManager));
     84 }
     85 
     86 WorkerDebuggerAgent::WorkerDebuggerAgent(InstrumentingAgents* instrumentingAgents, InspectorCompositeState* inspectorState, WorkerScriptDebugServer* scriptDebugServer, WorkerGlobalScope* inspectedWorkerGlobalScope, InjectedScriptManager* injectedScriptManager)
     87     : InspectorDebuggerAgent(instrumentingAgents, inspectorState, injectedScriptManager)
     88     , m_scriptDebugServer(scriptDebugServer)
     89     , m_inspectedWorkerGlobalScope(inspectedWorkerGlobalScope)
     90 {
     91     MutexLocker lock(workerDebuggerAgentsMutex());
     92     workerDebuggerAgents().set(inspectedWorkerGlobalScope->thread(), this);
     93 }
     94 
     95 WorkerDebuggerAgent::~WorkerDebuggerAgent()
     96 {
     97     MutexLocker lock(workerDebuggerAgentsMutex());
     98     ASSERT(workerDebuggerAgents().contains(m_inspectedWorkerGlobalScope->thread()));
     99     workerDebuggerAgents().remove(m_inspectedWorkerGlobalScope->thread());
    100 }
    101 
    102 void WorkerDebuggerAgent::interruptAndDispatchInspectorCommands(WorkerThread* thread)
    103 {
    104     MutexLocker lock(workerDebuggerAgentsMutex());
    105     WorkerDebuggerAgent* agent = workerDebuggerAgents().get(thread);
    106     if (agent)
    107         agent->m_scriptDebugServer->interruptAndRunTask(adoptPtr(new RunInspectorCommandsTask(thread, agent->m_inspectedWorkerGlobalScope)));
    108 }
    109 
    110 void WorkerDebuggerAgent::startListeningScriptDebugServer()
    111 {
    112     scriptDebugServer().addListener(this);
    113 }
    114 
    115 void WorkerDebuggerAgent::stopListeningScriptDebugServer()
    116 {
    117     scriptDebugServer().removeListener(this);
    118 }
    119 
    120 WorkerScriptDebugServer& WorkerDebuggerAgent::scriptDebugServer()
    121 {
    122     return *m_scriptDebugServer;
    123 }
    124 
    125 InjectedScript WorkerDebuggerAgent::injectedScriptForEval(ErrorString* error, const int* executionContextId)
    126 {
    127     if (executionContextId) {
    128         *error = "Execution context id is not supported for workers as there is only one execution context.";
    129         return InjectedScript();
    130     }
    131     ScriptState* scriptState = scriptStateFromWorkerGlobalScope(m_inspectedWorkerGlobalScope);
    132     return injectedScriptManager()->injectedScriptFor(scriptState);
    133 }
    134 
    135 void WorkerDebuggerAgent::muteConsole()
    136 {
    137     // We don't need to mute console for workers.
    138 }
    139 
    140 void WorkerDebuggerAgent::unmuteConsole()
    141 {
    142     // We don't need to mute console for workers.
    143 }
    144 
    145 void WorkerDebuggerAgent::addConsoleMessage(MessageSource source, MessageLevel level, const String& message, const String& sourceURL)
    146 {
    147     ScriptExecutionContext* context = m_inspectedWorkerGlobalScope;
    148     context->addConsoleMessage(source, level, message, sourceURL, 0);
    149 }
    150 
    151 } // namespace WebCore
    152