00001 #if !defined(__EVENTSEMAPHORE_HPP) 00002 #define __EVENTSEMAPHORE_HPP 00003 00004 /* 00005 CoreLinux++ 00006 Copyright (C) 1999,2000 CoreLinux Consortium 00007 00008 The CoreLinux++ Library is free software; you can redistribute it and/or 00009 modify it under the terms of the GNU Library General Public License as 00010 published by the Free Software Foundation; either version 2 of the 00011 License, or (at your option) any later version. 00012 00013 The CoreLinux++ Library Library is distributed in the hope that it will 00014 be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 Library General Public License for more details. 00017 00018 You should have received a copy of the GNU Library General Public 00019 License along with the GNU C Library; see the file COPYING.LIB. If not, 00020 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 00021 Boston, MA 02111-1307, USA. 00022 */ 00023 00024 #if !defined(__COMMON_HPP) 00025 #include <Common.hpp> 00026 #endif 00027 00028 #if !defined(__SEMAPHORE_HPP) 00029 #include <Semaphore.hpp> 00030 #endif 00031 00032 namespace corelinux 00033 { 00034 DECLARE_CLASS( EventSemaphore ); 00035 00041 class EventSemaphore : public Semaphore 00042 { 00043 public: 00044 00045 // 00046 // Constructors and destructors 00047 // 00048 00062 EventSemaphore 00063 ( 00064 SemaphoreGroupPtr aGroup, 00065 SemaphoreIdentifierRef aIdentifier, 00066 Counter aLimit, 00067 bool aRecursionFlag = true, 00068 bool aBalkingFlag = false 00069 ) throw ( NullPointerException ); 00070 00072 00073 virtual ~EventSemaphore( void ); 00074 00075 // 00076 // Accessors 00077 // 00078 00080 00081 virtual bool isLocked( void ) ; 00082 00083 // 00084 // Mutators 00085 // 00086 00091 SemaphoreOperationStatus post( void ) 00092 throw( SemaphoreException ); 00093 00099 virtual SemaphoreOperationStatus lockWithWait( void ) 00100 throw( SemaphoreException ); 00101 00106 virtual SemaphoreOperationStatus lockWithNoWait( void ) 00107 throw( SemaphoreException ); 00108 00110 00111 // virtual SemaphoreOperationStatus lockWithTimeOut( Timer ) 00112 // throw(SemaphoreException) = 0; 00113 00115 00116 virtual SemaphoreOperationStatus release( void ) 00117 throw( SemaphoreException ); 00118 00127 virtual void setLimit ( Counter aLimit ) throw ( SemaphoreException ); 00128 00133 virtual Counter getLimit ( void ) const; 00134 00135 protected: 00136 00137 // 00138 // Constructors 00139 // 00141 00142 EventSemaphore( void ) throw( Assertion ); 00143 00145 00146 EventSemaphore( EventSemaphoreCref ) throw( Assertion ); 00147 00148 // 00149 // Operator overloads 00150 // 00152 00153 EventSemaphoreRef operator=( EventSemaphoreCref ) 00154 throw( Assertion ); 00155 00156 private: 00157 00159 00160 Counter theNumListeners; 00161 00163 00164 Counter theMaxListeners; 00165 }; 00166 00167 } 00168 00169 #endif // if !defined(__EVENTSEMAPHORE_HPP) 00170 00171 /* 00172 Common rcs information do not modify 00173 $Author: dulimart $ 00174 $Revision: 1.7 $ 00175 $Date: 2000/11/15 22:32:06 $ 00176 $Locker: $ 00177 */ 00178 00179