| // Copyright (c) 2014 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 COMPONENTS_BROWSER_WATCHER_EXIT_CODE_WATCHER_WIN_H_ |
| #define COMPONENTS_BROWSER_WATCHER_EXIT_CODE_WATCHER_WIN_H_ |
| |
| #include "base/macros.h" |
| #include "base/process/process.h" |
| #include "base/strings/string16.h" |
| #include "base/strings/string_piece.h" |
| #include "base/time/time.h" |
| #include "base/win/scoped_handle.h" |
| |
| namespace browser_watcher { |
| |
| // Watches for the exit code of a process and records it in a given registry |
| // location. |
| class ExitCodeWatcher { |
| public: |
| // Initialize the watcher with a registry path. |
| explicit ExitCodeWatcher(base::StringPiece16 registry_path); |
| ~ExitCodeWatcher(); |
| |
| // Initializes from arguments on |cmd_line|, returns true on success. |
| // 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. |
| // The intent is for this handle to be inherited into the watcher process |
| // hosting the instance of this class. |
| bool Initialize(base::Process process); |
| |
| // Waits for the process to exit and records its exit code in registry. |
| // This is a blocking call. |
| void WaitForExit(); |
| |
| const base::Process& process() const { return process_; } |
| int exit_code() const { return exit_code_; } |
| |
| private: |
| // Writes |exit_code| to registry, returns true on success. |
| bool WriteProcessExitCode(int exit_code); |
| |
| // The registry path the exit codes are written to. |
| const base::string16 registry_path_; |
| |
| // Watched process and its creation time. |
| base::Process process_; |
| base::Time process_creation_time_; |
| |
| // The exit code of the watched process. Valid after WaitForExit. |
| int exit_code_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ExitCodeWatcher); |
| }; |
| |
| } // namespace browser_watcher |
| |
| #endif // COMPONENTS_BROWSER_WATCHER_EXIT_CODE_WATCHER_WIN_H_ |