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/*
* Copyright 2011-2015 Samy Al Bahra.
* 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <errno.h>
#include <inttypes.h>
#include <pthread.h>
#include <math.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <unistd.h>
#include <sys/time.h>
#include <ck_cc.h>
#include <ck_pr.h>
#include <ck_spinlock.h>
#include "../../common.h"
#ifndef ITERATE
#define ITERATE 1000000
#endif
struct block {
unsigned int tid;
};
static struct affinity a;
static unsigned int locked = 0;
static uint64_t nthr;
LOCK_DEFINE;
static void *
thread(void *null CK_CC_UNUSED)
{
#ifdef LOCK_STATE
LOCK_STATE;
#endif
unsigned int i = ITERATE;
unsigned int j;
unsigned int core;
if (aff_iterate_core(&a, &core)) {
perror("ERROR: Could not affine thread");
exit(EXIT_FAILURE);
}
while (i--) {
#ifdef TRYLOCK
if (i & 1) {
LOCK;
} else {
while (TRYLOCK == false)
ck_pr_stall();
}
#else
LOCK;
#endif
#ifdef LOCKED
if (LOCKED == false)
ck_error("is_locked operation failed.");
#endif
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
ck_pr_store_uint(&locked, locked + 1);
j = ck_pr_load_uint(&locked);
if (j != 10) {
ck_error("ERROR (WR): Race condition (%u)\n", j);
exit(EXIT_FAILURE);
}
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
ck_pr_store_uint(&locked, locked - 1);
UNLOCK;
LOCK;
j = ck_pr_load_uint(&locked);
if (j != 0) {
ck_error("ERROR (RD): Race condition (%u)\n", j);
exit(EXIT_FAILURE);
}
UNLOCK;
}
return (NULL);
}
int
main(int argc, char *argv[])
{
uint64_t i;
pthread_t *threads;
if (argc != 3) {
ck_error("Usage: " LOCK_NAME " <number of threads> <affinity delta>\n");
exit(EXIT_FAILURE);
}
nthr = atoi(argv[1]);
if (nthr <= 0) {
ck_error("ERROR: Number of threads must be greater than 0\n");
exit(EXIT_FAILURE);
}
#ifdef LOCK_INIT
LOCK_INIT;
#endif
threads = malloc(sizeof(pthread_t) * nthr);
if (threads == NULL) {
ck_error("ERROR: Could not allocate thread structures\n");
exit(EXIT_FAILURE);
}
a.delta = atoi(argv[2]);
a.request = 0;
fprintf(stderr, "Creating threads (mutual exclusion)...");
for (i = 0; i < nthr; i++) {
if (pthread_create(&threads[i], NULL, thread, NULL)) {
ck_error("ERROR: Could not create thread %" PRIu64 "\n", i);
exit(EXIT_FAILURE);
}
}
fprintf(stderr, "done\n");
fprintf(stderr, "Waiting for threads to finish correctness regression...");
for (i = 0; i < nthr; i++)
pthread_join(threads[i], NULL);
fprintf(stderr, "done (passed)\n");
return (0);
}
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