blob: 68683e5ba966d1302c6b0d390d71d6482a636b84 [file] [log] [blame]
/*
m5threads, a pthread library for the M5 simulator
Copyright (C) 2009, Stanford University
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
pthread_barrier_t barrier;
//int A[MAX_NUM_CPUS][64];
void* run (void* arg) {
long long int my_id = (long long int) arg;
//A[my_id][0]++;
printf("%i BEFORE\n", my_id);
pthread_barrier_wait(&barrier);
printf("%i AFTER\n", my_id);
//A[my_id][0]++;
return NULL;
}
int main (int argc, const char** const argv) {
int i;
if (argc != 2) {
printf("Usage: ./test_atomic <nthreads>\n");
exit(1);
}
int nthreads = atoi(argv[1]);
pthread_t* pth = (pthread_t*) calloc(nthreads, sizeof(pthread_t));
pthread_barrier_init(&barrier, NULL, nthreads);
for (i=1; i < nthreads; i++) {
pthread_create(&pth[i], NULL, run, (void*) i);
}
run((void*)0);
for (i=1; i < nthreads; i++) {
pthread_join(pth[i], NULL);
}
pthread_barrier_destroy(&barrier);
free(pth);
}