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base/win/process_monitor.h

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_WIN_PROCESS_MONITOR_H_
+#define BASE_WIN_PROCESS_MONITOR_H_
+#pragma once
+
+#include <windows.h>
+
+#include "base/base_export.h"
+#include "base/compiler_specific.h"
+#include "base/callback.h"
+#include "base/threading/platform_thread.h"
+
+namespace base {
+class MessageLoopProxy;
+}
+
+namespace base {
+namespace win {
+
+// This class monitors a process handle (via a background thread) and runs a
+// callback when that process and all other processes it has spawned
+// have exited.
+class BASE_EXPORT ProcessMonitor : public PlatformThread::Delegate {
+ public:
+  ProcessMonitor();
+  virtual ~ProcessMonitor();
+
+  // Initializes the process monitoring.
+  // Parameters:
+  // process_handle
+  //   Handle to the process which is to be added to the process monitoring job.
+  // callback
+  //   The callback to be called when the process has finished.
+  //   The callback will be called on the current thread.
+  void Initialize(HANDLE process_handle, const Closure& callback);
+
+  // Stops the thread.
+  void Stop();
+
+ private:
+  // PlatformThread::Delegate methods:
+  virtual void ThreadMain() OVERRIDE;
+
+  PlatformThreadHandle thread_;
+
+  // The monitoring job completion port. Created in Initialize.
+  HANDLE monitoring_job_completion_port_;
+  // Indicates that job monitoring is to be stopped
+  bool stop_job_monitoring_;
+  // The monitoring job. Should be created before the job monitor thread
+  // is started.
+  HANDLE monitoring_job_;
+
+  // Callback when the process has finished.
+  Closure callback_;
+  scoped_refptr<MessageLoopProxy> callback_message_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(ProcessMonitor);
+};
+
+}  // namespace win
+}  // namespace base
+
+#endif  // BASE_WIN_PROCESS_MONITOR_H_