GNU CommonC++

process.h

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00001 // Copyright (C) 1999-2005 Open Source Telecom Corporation.
00002 // Copyright (C) 2006-2010 David Sugar, Tycho Softworks.
00003 //
00004 // This program is free software; you can redistribute it and/or modify
00005 // it under the terms of the GNU General Public License as published by
00006 // the Free Software Foundation; either version 2 of the License, or
00007 // (at your option) any later version.
00008 //
00009 // This program is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 // GNU General Public License for more details.
00013 //
00014 // You should have received a copy of the GNU General Public License
00015 // along with this program; if not, write to the Free Software
00016 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017 //
00018 // As a special exception, you may use this file as part of a free software
00019 // library without restriction.  Specifically, if other files instantiate
00020 // templates or use macros or inline functions from this file, or you compile
00021 // this file and link it with other files to produce an executable, this
00022 // file does not by itself cause the resulting executable to be covered by
00023 // the GNU General Public License.  This exception does not however
00024 // invalidate any other reasons why the executable file might be covered by
00025 // the GNU General Public License.
00026 //
00027 // This exception applies only to the code released under the name GNU
00028 // Common C++.  If you copy code from other releases into a copy of GNU
00029 // Common C++, as the General Public License permits, the exception does
00030 // not apply to the code that you add in this way.  To avoid misleading
00031 // anyone as to the status of such modified files, you must delete
00032 // this exception notice from them.
00033 //
00034 // If you write modifications of your own for GNU Common C++, it is your choice
00035 // whether to permit this exception to apply to your modifications.
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00037 //
00038 
00044 #ifndef CCXX_PROCESS_H_
00045 #define CCXX_PROCESS_H_
00046 
00047 #ifndef CCXX_CONFIG_H_
00048 #include <cc++/config.h>
00049 #endif
00050 
00051 #ifndef CCXX_THREAD_H_
00052 #include <cc++/thread.h>
00053 #endif
00054 
00055 #ifdef  CCXX_NAMESPACES
00056 namespace ost {
00057 #endif
00058 
00069 class __EXPORT Process
00070 {
00071 private:
00072     static bool rtflag;
00073 
00074 public:
00075 #ifndef WIN32
00076     typedef RETSIGTYPE (*Trap)(int);
00077 
00083     static void detach(void);
00084 
00092     static void attach(const char *devname);
00093 
00101     static Trap setPosixSignal(int signo, Trap handler);
00102 
00110     static Trap setInterruptSignal(int signo, Trap handler);
00111 #endif
00112 
00120     bool lock(bool future = true);
00121 
00125     void unlock(void);
00126 
00144     static int spawn(const char *exec, const char **argv, bool wait = true);
00145 
00153     static int join(int pid);
00154 
00162     static bool cancel(int pid, int sig = 0);
00163 
00170     static const char *getEnv(const char *name);
00171 
00179     static void setEnv(const char *name, const char *value, bool overwrite);
00180 
00186     static const char *getConfigDir(void);
00187 
00193     static const char *getHomeDir(void);
00194 
00200     static const char *getUser(void);
00201 
00207     static bool setUser(const char *id, bool grp = true);
00208 
00214     static bool setGroup(const char *id);
00215 
00221     static size_t getPageSize(void);
00222 
00226     static void setPriority(int pri);
00227 
00231     static void setScheduler(const char *policy);
00232 
00236     static void setRealtime(int pri = 0);
00237 
00241     static bool isScheduler(void);
00242 
00246     static inline bool isRealtime(void)
00247         {return rtflag;};
00248 };
00249 
00259 class __EXPORT Lockfile
00260 {
00261 private:
00262 #ifdef  WIN32
00263     HANDLE  _mutex;
00264     bool    _flagged;
00265 #else
00266     char *_path;
00267 #endif
00268 
00269 public:
00275     Lockfile(const char *name);
00276 
00280     Lockfile();
00281 
00285     ~Lockfile()
00286         {unlock();};
00287 
00296     bool lock(const char *name);
00297 
00301     void unlock(void);
00302 
00308     bool isLocked(void);
00309 };
00310 
00311 #ifdef  CCXX_NAMESPACES
00312 }
00313 #endif
00314 
00315 #endif
00316