process.h

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00001 // Copyright (C) 1999-2005 Open Source Telecom Corporation.
00002 //
00003 // This program is free software; you can redistribute it and/or modify
00004 // it under the terms of the GNU General Public License as published by
00005 // the Free Software Foundation; either version 2 of the License, or
00006 // (at your option) any later version.
00007 //
00008 // This program is distributed in the hope that it will be useful,
00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00011 // GNU General Public License for more details.
00012 //
00013 // You should have received a copy of the GNU General Public License
00014 // along with this program; if not, write to the Free Software
00015 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00016 // 
00017 // As a special exception, you may use this file as part of a free software
00018 // library without restriction.  Specifically, if other files instantiate
00019 // templates or use macros or inline functions from this file, or you compile
00020 // this file and link it with other files to produce an executable, this
00021 // file does not by itself cause the resulting executable to be covered by
00022 // the GNU General Public License.  This exception does not however    
00023 // invalidate any other reasons why the executable file might be covered by
00024 // the GNU General Public License.    
00025 //
00026 // This exception applies only to the code released under the name GNU
00027 // Common C++.  If you copy code from other releases into a copy of GNU
00028 // Common C++, as the General Public License permits, the exception does
00029 // not apply to the code that you add in this way.  To avoid misleading
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00037 
00043 #ifndef CCXX_PROCESS_H_
00044 #define CCXX_PROCESS_H_
00045 
00046 #ifndef CCXX_CONFIG_H_
00047 #include <cc++/config.h>
00048 #endif
00049 
00050 #ifndef CCXX_THREAD_H_
00051 #include <cc++/thread.h>
00052 #endif
00053 
00054 #ifdef  CCXX_NAMESPACES
00055 namespace ost {
00056 #endif
00057 
00068 class __EXPORT Process
00069 {
00070 private:
00071         static bool rtflag;
00072 
00073 public:
00074 #ifndef WIN32
00075         typedef RETSIGTYPE (*Trap)(int);
00076 
00082         static void detach(void);
00083 
00091         static void attach(const char *devname);
00092 
00100         static Trap setPosixSignal(int signo, Trap handler);
00101 
00109         static Trap setInterruptSignal(int signo, Trap handler);
00110 #endif
00111 
00119         bool lock(bool future = true);
00120 
00124         void unlock(void);
00125         
00143         static int spawn(const char *exec, const char **argv, bool wait = true);
00144 
00152         static int join(int pid);
00153 
00161         static bool cancel(int pid, int sig = 0);
00162 
00169         static const char *getEnv(const char *name);
00170 
00178         static void setEnv(const char *name, const char *value, bool overwrite);
00179 
00185         static const char *getConfigDir(void);
00186 
00192         static const char *getHomeDir(void);
00193 
00199         static const char *getUser(void);
00200 
00206         static bool setUser(const char *id, bool grp = true);
00207 
00213         static bool setGroup(const char *id);
00214 
00220         static size_t getPageSize(void);
00221 
00225         static void setPriority(int pri);
00226 
00230         static void setScheduler(const char *policy);
00231 
00235         static void setRealtime(int pri = 0);
00236 
00240         static bool isScheduler(void);
00241 
00245         static inline bool isRealtime(void)
00246                 {return rtflag;};
00247 };
00248 
00258 class __EXPORT Lockfile
00259 {
00260 private:
00261 #ifdef  WIN32
00262         HANDLE  _mutex;
00263         bool    _flagged;
00264 #else
00265         char *_path;
00266 #endif
00267 
00268 public:
00274         Lockfile(const char *name);
00275 
00279         Lockfile();
00280 
00284         ~Lockfile()
00285                 {unlock();};
00286 
00295         bool lock(const char *name);
00296 
00300         void unlock(void);
00301 
00307         bool isLocked(void);
00308 };
00309 
00310 #ifdef  CCXX_NAMESPACES
00311 }
00312 #endif
00313 
00314 #endif
00315 

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