Source/core/inspector/WorkerRuntimeAgent.cpp

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#include "config.h"

#include "core/inspector/WorkerRuntimeAgent.h"

#include "bindings/core/v8/ScriptState.h"
#include "core/inspector/InjectedScript.h"
#include "core/inspector/InstrumentingAgents.h"
#include "core/inspector/WorkerDebuggerAgent.h"
#include "core/workers/WorkerGlobalScope.h"
#include "core/workers/WorkerThread.h"

namespace blink {

WorkerRuntimeAgent::WorkerRuntimeAgent(InjectedScriptManager* injectedScriptManager, ScriptDebugServer* scriptDebugServer, WorkerGlobalScope* workerGlobalScope)
    : InspectorRuntimeAgent(injectedScriptManager, scriptDebugServer)
    , m_workerGlobalScope(workerGlobalScope)
    , m_paused(false)
{
}

WorkerRuntimeAgent::~WorkerRuntimeAgent()
{
#if !ENABLE(OILPAN)
    m_instrumentingAgents->setWorkerRuntimeAgent(0);
#endif
}

void WorkerRuntimeAgent::trace(Visitor* visitor)
{
    visitor->trace(m_workerGlobalScope);
    InspectorRuntimeAgent::trace(visitor);
}

void WorkerRuntimeAgent::init()
{
    m_instrumentingAgents->setWorkerRuntimeAgent(this);
}

void WorkerRuntimeAgent::enable(ErrorString* errorString)
{
    if (m_enabled)
        return;

    InspectorRuntimeAgent::enable(errorString);
    addExecutionContextToFrontend(m_workerGlobalScope->script()->scriptState(), true, m_workerGlobalScope->url(), "");
}

InjectedScript WorkerRuntimeAgent::injectedScriptForEval(ErrorString* error, const int* executionContextId)
{
    if (!executionContextId)
        return injectedScriptManager()->injectedScriptFor(m_workerGlobalScope->script()->scriptState());

    InjectedScript injectedScript = injectedScriptManager()->injectedScriptForId(*executionContextId);
    if (injectedScript.isEmpty())
        *error = "Execution context with given id not found.";
    return injectedScript;
}

void WorkerRuntimeAgent::muteConsole()
{
    // We don't need to mute console for workers.
}

void WorkerRuntimeAgent::unmuteConsole()
{
    // We don't need to mute console for workers.
}

void WorkerRuntimeAgent::run(ErrorString*)
{
    m_paused = false;
}

void WorkerRuntimeAgent::isRunRequired(ErrorString*, bool* out_result)
{
    *out_result = m_paused;
}

void WorkerRuntimeAgent::willEvaluateWorkerScript(WorkerGlobalScope* context, int workerThreadStartMode)
{
    if (workerThreadStartMode != PauseWorkerGlobalScopeOnStart)
        return;

    m_paused = true;
    MessageQueueWaitResult result;
    context->thread()->willEnterNestedLoop();
    do {
        result = context->thread()->runDebuggerTask();
    // Keep waiting until execution is resumed.
    } while (result == MessageQueueMessageReceived && m_paused);
    context->thread()->didLeaveNestedLoop();
}

} // namespace blink