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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 
     33 #include "core/inspector/WorkerRuntimeAgent.h"
     34 
     35 #include "bindings/v8/ScriptState.h"
     36 #include "core/inspector/InjectedScript.h"
     37 #include "core/inspector/InstrumentingAgents.h"
     38 #include "core/inspector/WorkerDebuggerAgent.h"
     39 #include "core/workers/WorkerGlobalScope.h"
     40 #include "core/workers/WorkerRunLoop.h"
     41 #include "core/workers/WorkerThread.h"
     42 
     43 namespace WebCore {
     44 
     45 WorkerRuntimeAgent::WorkerRuntimeAgent(InstrumentingAgents* instrumentingAgents, InspectorCompositeState* state, InjectedScriptManager* injectedScriptManager, ScriptDebugServer* scriptDebugServer, WorkerGlobalScope* workerGlobalScope)
     46     : InspectorRuntimeAgent(instrumentingAgents, state, injectedScriptManager, scriptDebugServer)
     47     , m_workerGlobalScope(workerGlobalScope)
     48     , m_paused(false)
     49 {
     50     m_instrumentingAgents->setWorkerRuntimeAgent(this);
     51 }
     52 
     53 WorkerRuntimeAgent::~WorkerRuntimeAgent()
     54 {
     55     m_instrumentingAgents->setWorkerRuntimeAgent(0);
     56 }
     57 
     58 InjectedScript WorkerRuntimeAgent::injectedScriptForEval(ErrorString* error, const int* executionContextId)
     59 {
     60     if (executionContextId) {
     61         *error = "Execution context id is not supported for workers as there is only one execution context.";
     62         return InjectedScript();
     63     }
     64     ScriptState* scriptState = scriptStateFromWorkerGlobalScope(m_workerGlobalScope);
     65     return injectedScriptManager()->injectedScriptFor(scriptState);
     66 }
     67 
     68 void WorkerRuntimeAgent::muteConsole()
     69 {
     70     // We don't need to mute console for workers.
     71 }
     72 
     73 void WorkerRuntimeAgent::unmuteConsole()
     74 {
     75     // We don't need to mute console for workers.
     76 }
     77 
     78 void WorkerRuntimeAgent::run(ErrorString*)
     79 {
     80     m_paused = false;
     81 }
     82 
     83 void WorkerRuntimeAgent::willEvaluateWorkerScript(WorkerGlobalScope* context, int workerThreadStartMode)
     84 {
     85     if (workerThreadStartMode != PauseWorkerGlobalScopeOnStart)
     86         return;
     87 
     88     m_paused = true;
     89     MessageQueueWaitResult result;
     90     do {
     91         result = context->thread()->runLoop().runInMode(context, WorkerDebuggerAgent::debuggerTaskMode);
     92     // Keep waiting until execution is resumed.
     93     } while (result == MessageQueueMessageReceived && m_paused);
     94 }
     95 
     96 } // namespace WebCore
     97