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/*
* Berkeley Lab Checkpoint/Restart (BLCR) for Linux is Copyright (c)
* 2008, The Regents of the University of California, through Lawrence
* Berkeley National Laboratory (subject to receipt of any required
* approvals from the U.S. Dept. of Energy). All rights reserved.
*
* Portions may be copyrighted by others, as may be noted in specific
* copyright notices within specific files.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: cs_enter_leave2.c,v 1.12 2008/12/26 10:50:35 phargrov Exp $
*/
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <pthread.h>
#include "crut_util.h"
#define LIMIT 30
static volatile int dummy = 0;
static volatile int counter = 0;
static volatile int done = 0;
static int my_callback(void *arg)
{
printf("%d enter callback\n", 3*counter+1);
(void)cr_checkpoint(CR_CHECKPOINT_READY);
printf("%d leave callback\n", 3*counter+2);
return 0;
}
static void *thread_main(void *arg)
{
cr_client_id_t my_id;
cr_callback_id_t cb_id;
my_id = cr_init();
if (my_id < 0) {
printf("XXX cr_init() failed\n");
exit(-1);
}
cb_id = cr_register_callback(my_callback, NULL, CR_SIGNAL_CONTEXT);
if (cb_id < 0) {
printf("XXX cr_register_callback() unexpectedly returned %d\n", cb_id);
exit(-1);
}
fprintf(stderr, "cs_enter_leave2:");
crut_progress_start(time(NULL), LIMIT, 10);
do {
int prev = dummy;
printf("%d issue request %d\n", 3*counter, counter);
crut_checkpoint_block(NULL);
++counter;
while (dummy == prev) sched_yield(); // Avoid overflowing stack with nested signal frames
} while (crut_progress_step(time(NULL)));
done = 1 | dummy;
return NULL;
}
int main(void)
{
pthread_t th;
int join_ret;
void *join_val;
cr_client_id_t my_id;
setlinebuf(stdout);
printf("#ST_ALARM:%d\n", 2*LIMIT);
my_id = cr_init();
if (my_id < 0) {
printf("XXX cr_init() failed\n");
exit(-1);
}
if (crut_pthread_create(&th, NULL, &thread_main, NULL) != 0) {
printf("XXX pthread_create() unexpectedly failed\n");
exit(-1);
}
do {
cr_enter_cs(my_id);
dummy = dummy ^ counter;
cr_leave_cs(my_id);
} while (!done);
join_ret = pthread_join(th, &join_val);
if (join_ret || join_val) {
printf("XXX pthread_join() unexpectedly failed\n");
exit(-1);
}
printf("%d DONE\n", 3*counter);
return 0;
}
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