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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/callback.h"
#include "base/macros.h"
#include "base/process/process.h"
namespace base {
class CommandLine;
} // namespace base
namespace browser_watcher {
// An interface class to take care of the details in launching a browser
// watch process.
class WatcherClient {
// A CommandLineGenerator generates command lines that will launch a separate
// process and pass the supplied HANDLE to ExitCodeWatcher in that process.
typedef base::Callback<base::CommandLine(HANDLE)> CommandLineGenerator;
// Constructs a watcher client that launches its watcher process using the
// command line generated by |command_line_generator|.
explicit WatcherClient(const CommandLineGenerator& command_line_generator);
// Launches the watcher process such that the child process is able to inherit
// a handle to the current process.
void LaunchWatcher();
// Ensures that |handle| may be inherited by the watcher process. |handle|
// must still be inheritable, and it's the client's responsibility to
// communicate the value of |handle| to the launched process.
void AddInheritedHandle(HANDLE handle);
// Returns the launched process.
const base::Process& process() const { return process_; }
// The CommandLineGenerator passed to the constructor.
CommandLineGenerator command_line_generator_;
// A handle to the launched watcher process. Valid after a successful
// LaunchWatcher() call.
base::Process process_;
std::vector<HANDLE> inherited_handles_;
} // namespace browser_watcher