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// 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.
#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 {
// Initialize the watcher with a registry path.
explicit ExitCodeWatcher(base::StringPiece16 registry_path);
// 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_; }
// 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_;
} // namespace browser_watcher