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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/core/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/WorkerThread.h"
     41 
     42 namespace blink {
     43 
     44 WorkerRuntimeAgent::WorkerRuntimeAgent(InjectedScriptManager* injectedScriptManager, ScriptDebugServer* scriptDebugServer, WorkerGlobalScope* workerGlobalScope)
     45     : InspectorRuntimeAgent(injectedScriptManager, scriptDebugServer)
     46     , m_workerGlobalScope(workerGlobalScope)
     47     , m_paused(false)
     48 {
     49 }
     50 
     51 WorkerRuntimeAgent::~WorkerRuntimeAgent()
     52 {
     53 #if !ENABLE(OILPAN)
     54     m_instrumentingAgents->setWorkerRuntimeAgent(0);
     55 #endif
     56 }
     57 
     58 void WorkerRuntimeAgent::trace(Visitor* visitor)
     59 {
     60     visitor->trace(m_workerGlobalScope);
     61     InspectorRuntimeAgent::trace(visitor);
     62 }
     63 
     64 void WorkerRuntimeAgent::init()
     65 {
     66     m_instrumentingAgents->setWorkerRuntimeAgent(this);
     67 }
     68 
     69 void WorkerRuntimeAgent::enable(ErrorString* errorString)
     70 {
     71     if (m_enabled)
     72         return;
     73 
     74     InspectorRuntimeAgent::enable(errorString);
     75     addExecutionContextToFrontend(m_workerGlobalScope->script()->scriptState(), true, m_workerGlobalScope->url(), "");
     76 }
     77 
     78 InjectedScript WorkerRuntimeAgent::injectedScriptForEval(ErrorString* error, const int* executionContextId)
     79 {
     80     if (!executionContextId)
     81         return injectedScriptManager()->injectedScriptFor(m_workerGlobalScope->script()->scriptState());
     82 
     83     InjectedScript injectedScript = injectedScriptManager()->injectedScriptForId(*executionContextId);
     84     if (injectedScript.isEmpty())
     85         *error = "Execution context with given id not found.";
     86     return injectedScript;
     87 }
     88 
     89 void WorkerRuntimeAgent::muteConsole()
     90 {
     91     // We don't need to mute console for workers.
     92 }
     93 
     94 void WorkerRuntimeAgent::unmuteConsole()
     95 {
     96     // We don't need to mute console for workers.
     97 }
     98 
     99 void WorkerRuntimeAgent::run(ErrorString*)
    100 {
    101     m_paused = false;
    102 }
    103 
    104 void WorkerRuntimeAgent::isRunRequired(ErrorString*, bool* out_result)
    105 {
    106     *out_result = m_paused;
    107 }
    108 
    109 void WorkerRuntimeAgent::willEvaluateWorkerScript(WorkerGlobalScope* context, int workerThreadStartMode)
    110 {
    111     if (workerThreadStartMode != PauseWorkerGlobalScopeOnStart)
    112         return;
    113 
    114     m_paused = true;
    115     MessageQueueWaitResult result;
    116     context->thread()->willEnterNestedLoop();
    117     do {
    118         result = context->thread()->runDebuggerTask();
    119     // Keep waiting until execution is resumed.
    120     } while (result == MessageQueueMessageReceived && m_paused);
    121     context->thread()->didLeaveNestedLoop();
    122 }
    123 
    124 } // namespace blink
    125