/******************************************************************************
*
* Copyright (c) 2015 TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer.
*
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* Barrier.h
*
*****************************************************************************/
#pragma once
#include <oz++/CommonObject.h>
#include <oz++/Exception.h>
#include <pthread.h>
namespace OZ {
class Barrier :public CommonObject {
private:
pthread_barrier_t barrier;
size_t size;
public:
Barrier(size_t size, const pthread_barrierattr_t* attr=NULL)
:size(size)
{
if (size < 1) {
throw IException("Invalid argument %d", size);
}
int rc = pthread_barrier_init(&barrier, attr, size);
if (rc < 0) {
throw IException("Failed to pthread_barrier_init: %s", error());
}
}
~Barrier()
{
try {
destroy();
} catch (Exception& ex) {
ex.display();
}
}
void destroy()
{
int rc = pthread_barrier_destroy(&barrier);
if (rc != 0) {
throw IException("Failed to pthread_barrier_destroy:%s",
error());
}
}
void wait()
{
int rc = pthread_barrier_wait(&barrier);
if (rc == 0 || rc == PTHREAD_BARRIER_SERIAL_THREAD ) {
printf("Barrier::wait rc %d\n", rc);
; //OK
} else {
throw IException("Failed to pthread_barrier_wait: %s",
error() );
}
}
};
}