00001 // 00002 // thread.h 00003 // 00004 // Copyright (C) 1997 Limit Point Systems, Inc. 00005 // 00006 // Author: Edward Seidl <seidl@janed.com> 00007 // Maintainer: LPS 00008 // 00009 // This file is part of the SC Toolkit. 00010 // 00011 // The SC Toolkit is free software; you can redistribute it and/or modify 00012 // it under the terms of the GNU Library General Public License as published by 00013 // the Free Software Foundation; either version 2, or (at your option) 00014 // any later version. 00015 // 00016 // The SC Toolkit is distributed in the hope that it will be useful, 00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 // GNU Library General Public License for more details. 00020 // 00021 // You should have received a copy of the GNU Library General Public License 00022 // along with the SC Toolkit; see the file COPYING.LIB. If not, write to 00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 00024 // 00025 // The U.S. Government is granted a limited license as per AL 91-7. 00026 // 00027 00028 #ifndef _util_group_thread_h 00029 #define _util_group_thread_h 00030 00031 #ifdef __GNUC__ 00032 #pragma interface 00033 #endif 00034 00035 #include <util/class/class.h> 00036 00040 class ThreadLock : public RefCount { 00041 public: 00042 ThreadLock(); 00043 virtual ~ThreadLock(); 00044 00046 virtual void lock() =0; 00048 virtual void unlock() =0; 00049 }; 00050 00051 00054 class Thread { 00055 public: 00056 Thread(); 00057 virtual ~Thread(); 00058 00059 static void *run_Thread_run(void*thread); 00060 00062 virtual void run() =0; 00063 }; 00064 00065 extern "C" { 00066 // a C linkage interface to run_Thread_run 00067 void *Thread__run_Thread_run(void*thread); 00068 } 00069 00072 class ThreadGrp: public DescribedClass { 00073 protected: 00074 Thread** threads_; 00075 int nthread_; 00076 00077 public: 00078 ThreadGrp(); 00079 ThreadGrp(const Ref<KeyVal>&); 00080 ThreadGrp(const ThreadGrp&, int nthread = -1); 00081 virtual ~ThreadGrp(); 00082 00085 void add_thread(int, Thread*); 00087 int nthread() const { return nthread_; } 00088 00089 void delete_threads(); 00090 00093 virtual int start_threads() =0; 00096 virtual int wait_threads() =0; 00098 virtual Ref<ThreadLock> new_lock() =0; 00099 00104 virtual ThreadGrp* clone(int nthread = -1); 00105 00106 static void set_default_threadgrp(const Ref<ThreadGrp>&); 00107 static ThreadGrp * get_default_threadgrp(); 00108 static ThreadGrp * initial_threadgrp(int &argc, char ** argv); 00109 }; 00110 00111 00115 class ProcThreadGrp: public ThreadGrp { 00116 public: 00117 ProcThreadGrp(); 00118 ProcThreadGrp(const Ref<KeyVal>&); 00119 ~ProcThreadGrp(); 00120 00121 int start_threads(); 00122 int wait_threads(); 00123 Ref<ThreadLock> new_lock(); 00124 00125 ThreadGrp* clone(int nthread = -1); 00126 }; 00127 00128 #endif 00129 00130 // Local Variables: 00131 // mode: c++ 00132 // c-file-style: "ETS" 00133 // End: