| // Copyright 2015 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 CHROME_APP_CHROME_WATCHER_CLIENT_WIN_H_ |
| #define CHROME_APP_CHROME_WATCHER_CLIENT_WIN_H_ |
| |
| #include <windows.h> |
| |
| #include "base/callback.h" |
| #include "base/command_line.h" |
| #include "base/macros.h" |
| #include "base/process/process.h" |
| #include "base/time/time.h" |
| #include "base/win/scoped_handle.h" |
| |
| // Launches a Chrome watcher process and permits the client to wait until the |
| // process is fully initialized. |
| class ChromeWatcherClient { |
| public: |
| // A CommandLineGenerator generates command lines that will launch a separate |
| // process and pass the supplied values to WatcherMain in that process. |
| // |parent_process| is the process that the watcher process should watch; |
| // |main_thread_id| is the parent process' main thread ID. |
| // |on_initialized_event| should be signaled when the watcher process is fully |
| // initialized. The process will be launched such that the HANDLEs are |
| // inherited by the new process. |
| typedef base::Callback<base::CommandLine(HANDLE parent_process, |
| DWORD main_thread_id, |
| HANDLE on_initialized_event)> |
| CommandLineGenerator; |
| |
| // Constructs an instance that launches its watcher process using the command |
| // line generated by |command_line_generator|. |
| explicit ChromeWatcherClient( |
| const CommandLineGenerator& command_line_generator); |
| |
| ~ChromeWatcherClient(); |
| |
| // Launches the watcher process such that the child process is able to inherit |
| // a handle to the current process. Returns true if the process is |
| // successfully launched. |
| bool LaunchWatcher(); |
| |
| // Blocks until the process, previously launched by LaunchWatcher, is either |
| // fully initialized or has terminated. Returns true if the process |
| // successfully initializes. May be called multiple times. |
| bool EnsureInitialized(); |
| |
| // Waits for the process to exit. Returns true on success. It is up to the |
| // client to somehow signal the process to exit. |
| bool WaitForExit(int* exit_code); |
| |
| // Same as WaitForExit() but only waits for up to |timeout|. |
| bool WaitForExitWithTimeout(base::TimeDelta timeout, int* exit_code); |
| |
| private: |
| CommandLineGenerator command_line_generator_; |
| base::win::ScopedHandle on_initialized_event_; |
| base::Process process_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChromeWatcherClient); |
| }; |
| |
| #endif // CHROME_APP_CHROME_WATCHER_CLIENT_WIN_H_ |