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00001 // Copyright (C) 1999-2005 Open Source Telecom Corporation.
00002 // Copyright (C) 2006-2014 David Sugar, Tycho Softworks.
00003 // Copyright (C) 2015 Cherokees of Idaho.
00004 //
00005 // This program is free software; you can redistribute it and/or modify
00006 // it under the terms of the GNU General Public License as published by
00007 // the Free Software Foundation; either version 2 of the License, or
00008 // (at your option) any later version.
00009 //
00010 // This program is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU Lesser General Public License
00016 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 COMMONCPP_PROCESS_H_
00045 #define COMMONCPP_PROCESS_H_
00046 
00047 #ifndef COMMONCPP_CONFIG_H_
00048 #include <commoncpp/config.h>
00049 #endif
00050 
00051 #ifndef COMMONCPP_THREAD_H_
00052 #include <commoncpp/thread.h>
00053 #endif
00054 
00055 namespace ost {
00056 
00067 class __EXPORT Process
00068 {
00069 private:
00070     static bool rtflag;
00071 
00072 public:
00073 #ifndef _MSWINDOWS_
00074     typedef void (*Trap)(int);
00075 
00081     static void detach(void);
00082 
00090     static void attach(const char *devname);
00091 
00099     static Trap setPosixSignal(int signo, Trap handler);
00100 
00108     static Trap setInterruptSignal(int signo, Trap handler);
00109 #endif
00110 
00118     bool lock(bool future = true);
00119 
00123     void unlock(void);
00124 
00142     static int spawn(const char *exec, const char **argv, bool wait = true);
00143 
00151     static int join(int pid);
00152 
00160     static bool cancel(int pid, int sig = 0);
00161 
00168     static const char *getEnv(const char *name);
00169 
00177     static void setEnv(const char *name, const char *value, bool overwrite);
00178 
00184     static const char *getConfigDir(void);
00185 
00191     static const char *getHomeDir(void);
00192 
00198     static const char *getUser(void);
00199 
00205     static bool setUser(const char *id, bool grp = true);
00206 
00212     static bool setGroup(const char *id);
00213 
00219     static size_t getPageSize(void);
00220 
00224     static void setPriority(int pri);
00225 
00229     static void setScheduler(const char *policy);
00230 
00234     static void setRealtime(int pri = 0);
00235 
00239     static bool isScheduler(void);
00240 
00244     static inline bool isRealtime(void)
00245         {return rtflag;}
00246 };
00247 
00257 class __EXPORT Lockfile
00258 {
00259 private:
00260 #ifdef  _MSWINDOWS_
00261     HANDLE  _mutex;
00262     bool    _flagged;
00263 #else
00264     char *_path;
00265 #endif
00266 
00267 public:
00273     Lockfile(const char *name);
00274 
00278     Lockfile();
00279 
00283     ~Lockfile()
00284         {unlock();}
00285 
00294     bool lock(const char *name);
00295 
00299     void unlock(void);
00300 
00306     bool isLocked(void);
00307 };
00308 
00309 } // namespace ost
00310 
00311 #endif