src/third_party/WebKit/Source/core/inspector/WorkerDebuggerAgent.cpp

   1 /*
   2  * Copyright (C) 2011 Google Inc. All rights reserved.
   3  *
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   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
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  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  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 FINAL : public ScriptDebugServer::Task {
  59 public:
  60     explicit RunInspectorCommandsTask(WorkerThread* thread)
  61         : m_thread(thread) { }
  62     virtual ~RunInspectorCommandsTask() { }
  63     virtual void run() OVERRIDE
  64     {
  65         // Process all queued debugger commands. WorkerThread is certainly
  66         // alive if this task is being executed.
  67         while (MessageQueueMessageReceived == m_thread->runLoop().runDebuggerTask(WorkerRunLoop::DontWaitForMessage)) { }
  68     }
  69
  70 private:
  71     WorkerThread* m_thread;
  72 };
  73
  74 } // namespace
  75
  76 PassOwnPtr<WorkerDebuggerAgent> WorkerDebuggerAgent::create(WorkerScriptDebugServer* scriptDebugServer, WorkerGlobalScope* inspectedWorkerGlobalScope, InjectedScriptManager* injectedScriptManager)
  77 {
  78     return adoptPtr(new WorkerDebuggerAgent(scriptDebugServer, inspectedWorkerGlobalScope, injectedScriptManager));
  79 }
  80
  81 WorkerDebuggerAgent::WorkerDebuggerAgent(WorkerScriptDebugServer* scriptDebugServer, WorkerGlobalScope* inspectedWorkerGlobalScope, InjectedScriptManager* injectedScriptManager)
  82     : InspectorDebuggerAgent(injectedScriptManager)
  83     , m_scriptDebugServer(scriptDebugServer)
  84     , m_inspectedWorkerGlobalScope(inspectedWorkerGlobalScope)
  85 {
  86     MutexLocker lock(workerDebuggerAgentsMutex());
  87     workerDebuggerAgents().set(inspectedWorkerGlobalScope->thread(), this);
  88 }
  89
  90 WorkerDebuggerAgent::~WorkerDebuggerAgent()
  91 {
  92     MutexLocker lock(workerDebuggerAgentsMutex());
  93     ASSERT(workerDebuggerAgents().contains(m_inspectedWorkerGlobalScope->thread()));
  94     workerDebuggerAgents().remove(m_inspectedWorkerGlobalScope->thread());
  95 }
  96
  97 void WorkerDebuggerAgent::interruptAndDispatchInspectorCommands(WorkerThread* thread)
  98 {
  99     MutexLocker lock(workerDebuggerAgentsMutex());
 100     WorkerDebuggerAgent* agent = workerDebuggerAgents().get(thread);
 101     if (agent)
 102         agent->m_scriptDebugServer->interruptAndRunTask(adoptPtr(new RunInspectorCommandsTask(thread)));
 103 }
 104
 105 void WorkerDebuggerAgent::startListeningScriptDebugServer()
 106 {
 107     scriptDebugServer().addListener(this);
 108 }
 109
 110 void WorkerDebuggerAgent::stopListeningScriptDebugServer()
 111 {
 112     scriptDebugServer().removeListener(this);
 113 }
 114
 115 WorkerScriptDebugServer& WorkerDebuggerAgent::scriptDebugServer()
 116 {
 117     return *m_scriptDebugServer;
 118 }
 119
 120 InjectedScript WorkerDebuggerAgent::injectedScriptForEval(ErrorString* error, const int* executionContextId)
 121 {
 122     if (executionContextId) {
 123         *error = "Execution context id is not supported for workers as there is only one execution context.";
 124         return InjectedScript();
 125     }
 126     return injectedScriptManager()->injectedScriptFor(m_inspectedWorkerGlobalScope->script()->scriptState());
 127 }
 128
 129 void WorkerDebuggerAgent::muteConsole()
 130 {
 131     // We don't need to mute console for workers.
 132 }
 133
 134 void WorkerDebuggerAgent::unmuteConsole()
 135 {
 136     // We don't need to mute console for workers.
 137 }
 138
 139 } // namespace WebCore