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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_APP_EXIT_CODE_WATCHER_WIN_H_
#define CHROME_APP_EXIT_CODE_WATCHER_WIN_H_
#include "base/process/process.h"
#include "base/threading/thread.h"
#include "base/win/scoped_handle.h"
// Watches for the exit code of a process and records
class ExitCodeWatcher {
public:
ExitCodeWatcher();
ExitCodeWatcher(const ExitCodeWatcher&) = delete;
ExitCodeWatcher& operator=(const ExitCodeWatcher&) = delete;
~ExitCodeWatcher();
// This function expects |process| to be open with sufficient privilege to
// wait and retrieve the process exit code.
// It checks the handle for validity and takes ownership of it.
bool Initialize(base::Process process);
bool StartWatching();
void StopWatching();
const base::Process& process() const { return process_; }
int ExitCodeForTesting() const { return exit_code_; }
private:
// Waits for the process to exit and records its exit code in a histogram.
// This is a blocking call.
void WaitForExit();
// Watched process and its creation time.
base::Process process_;
// The thread that runs WaitForExit().
base::Thread background_thread_;
// The exit code of the watched process. Valid after WaitForExit.
int exit_code_;
// Event handle to use to stop exit watcher thread
base::win::ScopedHandle stop_watching_handle_;
};
#endif // CHROME_APP_EXIT_CODE_WATCHER_WIN_H_
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