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00001 // Copyright (C) 1999-2005 Open Source Telecom Corporation. 00002 // Copyright (C) 2006-2014 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 Lesser General Public License 00015 // along with this program. If not, see <http://www.gnu.org/licenses/>. 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. 00035 // If you do not wish that, delete this exception notice. 00036 // 00037 00043 #ifndef COMMONCPP_PROCESS_H_ 00044 #define COMMONCPP_PROCESS_H_ 00045 00046 #ifndef COMMONCPP_CONFIG_H_ 00047 #include <commoncpp/config.h> 00048 #endif 00049 00050 #ifndef COMMONCPP_THREAD_H_ 00051 #include <commoncpp/thread.h> 00052 #endif 00053 00054 namespace ost { 00055 00066 class __EXPORT Process 00067 { 00068 private: 00069 static bool rtflag; 00070 00071 public: 00072 #ifndef _MSWINDOWS_ 00073 typedef void (*Trap)(int); 00074 00080 static void detach(void); 00081 00089 static void attach(const char *devname); 00090 00098 static Trap setPosixSignal(int signo, Trap handler); 00099 00107 static Trap setInterruptSignal(int signo, Trap handler); 00108 #endif 00109 00117 bool lock(bool future = true); 00118 00122 void unlock(void); 00123 00141 static int spawn(const char *exec, const char **argv, bool wait = true); 00142 00150 static int join(int pid); 00151 00159 static bool cancel(int pid, int sig = 0); 00160 00167 static const char *getEnv(const char *name); 00168 00176 static void setEnv(const char *name, const char *value, bool overwrite); 00177 00183 static const char *getConfigDir(void); 00184 00190 static const char *getHomeDir(void); 00191 00197 static const char *getUser(void); 00198 00204 static bool setUser(const char *id, bool grp = true); 00205 00211 static bool setGroup(const char *id); 00212 00218 static size_t getPageSize(void); 00219 00223 static void setPriority(int pri); 00224 00228 static void setScheduler(const char *policy); 00229 00233 static void setRealtime(int pri = 0); 00234 00238 static bool isScheduler(void); 00239 00243 static inline bool isRealtime(void) 00244 {return rtflag;} 00245 }; 00246 00256 class __EXPORT Lockfile 00257 { 00258 private: 00259 #ifdef _MSWINDOWS_ 00260 HANDLE _mutex; 00261 bool _flagged; 00262 #else 00263 char *_path; 00264 #endif 00265 00266 public: 00272 Lockfile(const char *name); 00273 00277 Lockfile(); 00278 00282 ~Lockfile() 00283 {unlock();} 00284 00293 bool lock(const char *name); 00294 00298 void unlock(void); 00299 00305 bool isLocked(void); 00306 }; 00307 00308 } // namespace ost 00309 00310 #endif