/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ // Copyright (c) 2006-2008 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 BASE_PROCESS_H_ #define BASE_PROCESS_H_
#include"base/basictypes.h"
#include <sys/types.h> #ifdef XP_WIN # include <windows.h> #endif
namespace base {
// ProcessHandle is a platform specific type which represents the underlying OS // handle to a process. // ProcessId is a number which identifies the process in the OS. #ifdefined(XP_WIN) typedef HANDLE ProcessHandle; typedef DWORD ProcessId; // inttypes.h-like macro for ProcessId formatting. # define PRIPID "lu"
// In theory, on Windows, this is a valid process ID, but in practice they are // currently divisible by four. Process IDs share the kernel handle allocation // code and they are guaranteed to be divisible by four. // As this could change for process IDs we shouldn't generally rely on this // property, however even if that were to change, it seems safe to rely on this // particular value never being used. const ProcessId kInvalidProcessId = kuint32max; #else // On POSIX, our ProcessHandle will just be the PID. typedef pid_t ProcessHandle; typedef pid_t ProcessId; // inttypes.h-like macro for ProcessId formatting. # define PRIPID "d"
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