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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
00030 // anyone as to the status of such modified files, you must delete
00031 // this exception notice from them.
00032 //
00033 // If you write modifications of your own for GNU Common C++, it is your choice
00034 // whether to permit this exception to apply to your modifications.
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00036 //
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 public:
00071 #ifndef WIN32
00072         typedef RETSIGTYPE (*Trap)(int);
00073 
00079         static void detach(void);
00080 
00088         static void attach(const char *devname);
00089 
00097         static Trap setPosixSignal(int signo, Trap handler);
00098 
00106         static Trap setInterruptSignal(int signo, Trap handler);
00107 #endif
00108 
00116         bool lock(bool future = true);
00117 
00121         void unlock(void);
00122         
00140         static int spawn(const char *exec, const char **argv, bool wait = true);
00141 
00149         static int join(int pid);
00150 
00158         static bool cancel(int pid, int sig = 0);
00159 
00166         static const char *getEnv(const char *name);
00167 
00175         static void setEnv(const char *name, const char *value, bool overwrite);
00176 
00182         static const char *getConfigDir(void);
00183 
00189         static const char *getHomeDir(void);
00190 
00196         static const char *getUser(void);
00197 
00203         static bool setUser(const char *id, bool grp = true);
00204 
00210         static bool setGroup(const char *id);
00211 
00217         static size_t getPageSize(void);
00218 
00222         static void setPriority(int pri);
00223 
00227         static void setScheduler(const char *policy);
00228 
00232         static void setRealtime(int pri = 0);
00233 
00237         static bool isScheduler(void);
00238 };
00239 
00249 class __EXPORT Lockfile
00250 {
00251 private:
00252 #ifdef  WIN32
00253         HANDLE  _mutex;
00254         bool    _flagged;
00255 #else
00256         char *_path;
00257 #endif
00258 
00259 public:
00265         Lockfile(const char *name);
00266 
00270         Lockfile();
00271 
00275         ~Lockfile()
00276                 {unlock();};
00277 
00286         bool lock(const char *name);
00287 
00291         void unlock(void);
00292 
00298         bool isLocked(void);
00299 };
00300 
00301 #ifdef  CCXX_NAMESPACES
00302 }
00303 #endif
00304 
00305 #endif
00306 

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