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/*****************************************************************************
Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
more contributor license agreements. See the NOTICE file distributed
with this work for additional information regarding copyright ownership.
Accellera licenses this file to you under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with the
License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied. See the License for the specific language governing
permissions and limitations under the License.
*****************************************************************************/
/*****************************************************************************
sc_barrier.h -- Barrier Process Synchronization Definition
Original Author: Andy Goodrich, Forte Design Systems, 5 May 2003
*****************************************************************************/
/*****************************************************************************
MODIFICATION LOG - modifiers, enter your name, affiliation, date and
changes you are making here.
Name, Affiliation, Date:
Description of Modification:
*****************************************************************************/
// $Log: sc_barrier.h,v $
// Revision 1.1.1.1 2006/12/15 20:26:03 acg
// systemc_tests-2.3
//
// Revision 1.2 2006/01/24 21:04:52 acg
// Andy Goodrich: replacement of deprecated features with their non-deprecated
// counterparts.
//
#ifndef SC_BARRIER_H
#define SC_BARRIER_H
namespace sc_dp {
// -----------------------------------------------------------------------------
// CLASS sc_barrier
//
// This class provides a way of synchronising a set of processes. Each process
// calls the wait() method and one all processes have called that method they
// will all be released for execution.
// -----------------------------------------------------------------------------
class sc_barrier {
public:
void initialize( int thread_n )
{
m_thread_n = thread_n;
}
void wait()
{
m_thread_n--;
if ( m_thread_n )
{
::sc_core::wait(m_barrier_event);
}
else
{
m_barrier_event.notify(SC_ZERO_TIME);
::sc_core::wait(m_barrier_event);
}
}
protected:
sc_event m_barrier_event; // Event to wait on.
int m_thread_n; // # of threads left to wait.
};
} // namespace sc_dp
#endif // SC_BARRIER_H
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