sc_barrier.h revision 12855:588919e0e4aa
1/***************************************************************************** 2 3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 4 more contributor license agreements. See the NOTICE file distributed 5 with this work for additional information regarding copyright ownership. 6 Accellera licenses this file to you under the Apache License, Version 2.0 7 (the "License"); you may not use this file except in compliance with the 8 License. You may obtain a copy of the License at 9 10 http://www.apache.org/licenses/LICENSE-2.0 11 12 Unless required by applicable law or agreed to in writing, software 13 distributed under the License is distributed on an "AS IS" BASIS, 14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 15 implied. See the License for the specific language governing 16 permissions and limitations under the License. 17 18 *****************************************************************************/ 19 20/***************************************************************************** 21 22 sc_barrier.h -- Barrier Process Synchronization Definition 23 24 Original Author: Andy Goodrich, Forte Design Systems, 5 May 2003 25 26 *****************************************************************************/ 27 28/***************************************************************************** 29 30 MODIFICATION LOG - modifiers, enter your name, affiliation, date and 31 changes you are making here. 32 33 Name, Affiliation, Date: 34 Description of Modification: 35 36 *****************************************************************************/ 37 38// $Log: sc_barrier.h,v $ 39// Revision 1.1.1.1 2006/12/15 20:26:03 acg 40// systemc_tests-2.3 41// 42// Revision 1.2 2006/01/24 21:04:52 acg 43// Andy Goodrich: replacement of deprecated features with their non-deprecated 44// counterparts. 45// 46 47#ifndef SC_BARRIER_H 48#define SC_BARRIER_H 49 50namespace sc_dp { 51 52// ----------------------------------------------------------------------------- 53// CLASS sc_barrier 54// 55// This class provides a way of synchronising a set of processes. Each process 56// calls the wait() method and one all processes have called that method they 57// will all be released for execution. 58// ----------------------------------------------------------------------------- 59 60class sc_barrier { 61 public: 62 void initialize( int thread_n ) 63 { 64 m_thread_n = thread_n; 65 } 66 67 void wait() 68 { 69 m_thread_n--; 70 if ( m_thread_n ) 71 { 72 ::sc_core::wait(m_barrier_event); 73 } 74 else 75 { 76 m_barrier_event.notify(SC_ZERO_TIME); 77 ::sc_core::wait(m_barrier_event); 78 } 79 } 80 81 protected: 82 sc_event m_barrier_event; // Event to wait on. 83 int m_thread_n; // # of threads left to wait. 84}; 85 86} // namespace sc_dp 87 88#endif // SC_BARRIER_H 89