chromium/chrome/browser/process_singleton.h

// Copyright 2012 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_BROWSER_PROCESS_SINGLETON_H_
#define CHROME_BROWSER_PROCESS_SINGLETON_H_

#include "base/sequence_checker.h"
#include "build/build_config.h"

#if BUILDFLAG(IS_WIN)
#include "base/win/windows_types.h"
#endif  // BUILDFLAG(IS_WIN)

#include "base/check.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/functional/callback.h"
#include "base/memory/ref_counted.h"
#include "base/process/process.h"
#include "ui/gfx/native_widget_types.h"

#if BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_ANDROID)
#include "base/files/scoped_temp_dir.h"
#endif

#if BUILDFLAG(IS_WIN)
#include "base/win/message_window.h"
#endif  // BUILDFLAG(IS_WIN)

namespace base {
class CommandLine;
}

// ProcessSingleton ----------------------------------------------------------
//
// This class allows different browser processes to communicate with
// each other.  It is named according to the user data directory, so
// we can be sure that no more than one copy of the application can be
// running at once with a given data directory.
//
// Implementation notes:
// - the Windows implementation uses an invisible global message window;
// - the Linux implementation uses a Unix domain socket in the user data dir.

class ProcessSingleton { … };

#endif  // CHROME_BROWSER_PROCESS_SINGLETON_H_