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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. 00036 // If you do not wish that, delete this exception notice. 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