process.h

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00001 /****************************************************************
00002  *  Vidalia is distributed under the following license:
00003  *
00004  *  Copyright (C) 2006,  Matt Edman, Justin Hipple
00005  *
00006  *  This program is free software; you can redistribute it and/or
00007  *  modify it under the terms of the GNU General Public License
00008  *  as published by the Free Software Foundation; either version 2
00009  *  of the License, or (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019  *  Boston, MA  02110-1301, USA.
00020  ****************************************************************/
00021 
00022 /**
00023  * \file process.h
00024  * \version $Id: process.h 1563 2006-12-26 06:06:04Z edmanm $
00025  * \brief Process information and pidfile functions
00026  */
00027 
00028 #ifndef _PROCESS_H
00029 #define _PROCESS_H
00030 
00031 #include <QString>
00032 
00033 #if defined(Q_OS_WIN)
00034 #include "win32.h"
00035 #else
00036 #include <sys/types.h>
00037 #include <unistd.h>
00038 #include <signal.h>
00039 #include <errno.h>
00040 #endif
00041 
00042 
00043 /** Returns the PID of the current process. */
00044 qint64 get_pid();
00045 
00046 /** Returns true if a process with the given PID is running. */
00047 bool is_process_running(qint64 pid);
00048 
00049 /** Writes the given file to disk containing the current process's PID. */
00050 bool write_pidfile(QString pidfile, QString *errmsg = 0);
00051 
00052 /** Reads the giiven pidfile and returns the value in it. If the file does not
00053  * exist, -1 is returned. */
00054 qint64 read_pidfile(QString pidfile, QString *errmsg = 0);
00055 
00056 #endif
00057 

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