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/*
* Copyright (c) 2021 IBM Corporation. All rights reserved.
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdio.h>
#include <time.h>
#include "support.h"
#include "opal/runtime/opal.h"
#include "opal/constants.h"
#include "opal/mca/threads/threads.h"
#include "opal/mca/threads/condition.h"
#include "opal/sys/atomic.h"
#define OPAL_TEST_THREAD_COUNT 8
#define ITERATIONS 1000000
#define ITEM_COUNT 100
#ifdef __APPLE__
/* pthread barrier implementation copied from stack overflow.
* Source:
* https://stackoverflow.com/questions/3640853/performance-test-sem-t-v-s-dispatch-semaphore-t-and-pthread-once-t-v-s-dispatch
*/
typedef int pthread_barrierattr_t;
struct pthread_barrier_t {
pthread_mutex_t mutex;
pthread_cond_t cond;
int count;
int tripCount;
};
typedef struct pthread_barrier_t pthread_barrier_t;
int pthread_barrier_init(pthread_barrier_t *barrier, const pthread_barrierattr_t *attr,
unsigned int count)
{
if (count == 0) {
errno = EINVAL;
return -1;
}
if (pthread_mutex_init(&barrier->mutex, 0) < 0) {
return -1;
}
if (pthread_cond_init(&barrier->cond, 0) < 0) {
pthread_mutex_destroy(&barrier->mutex);
return -1;
}
barrier->tripCount = count;
barrier->count = 0;
return 0;
}
int pthread_barrier_destroy(pthread_barrier_t *barrier)
{
pthread_cond_destroy(&barrier->cond);
pthread_mutex_destroy(&barrier->mutex);
return 0;
}
int pthread_barrier_wait(pthread_barrier_t *barrier)
{
pthread_mutex_lock(&barrier->mutex);
++(barrier->count);
if (barrier->count >= barrier->tripCount) {
barrier->count = 0;
pthread_cond_broadcast(&barrier->cond);
pthread_mutex_unlock(&barrier->mutex);
return 1;
}
pthread_cond_wait(&barrier->cond, &(barrier->mutex));
pthread_mutex_unlock(&barrier->mutex);
return 0;
}
#endif
static opal_atomic_int64_t var_64 = 0;
static opal_atomic_int32_t var_32 = 0;
static pthread_barrier_t barrier;
#if !defined(timersub)
#define timersub(a, b, r) \
do { \
(r)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
if ((a)->tv_usec < (b)->tv_usec) { \
(r)->tv_sec--; \
(a)->tv_usec += 1000000; \
} \
(r)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
} while (0)
#endif
#if !defined(OPAL_TEST_DONE)
#define OPAL_TEST_DONE(func, val) { \
gettimeofday (&stop, NULL); \
timersub(&stop, &start, &total); \
timing = ((double) total.tv_sec + (double) total.tv_usec * 1e-6) / (double) ITERATIONS; \
printf ("%s() thread finished. Time: %d s %d us %d nsec/per\n", func, (int) total.tv_sec, \
(int)total.tv_usec, (int)(timing / 1e-9)); \
memset(&stop, 0, sizeof(struct timeval)); \
memset(&start, 0, sizeof(struct timeval)); \
memset(&total, 0, sizeof(struct timeval)); \
/* printf("%ld\n", val); */ \
fflush(stdout); \
pthread_barrier_wait (&barrier); \
}
#endif
#if !defined(OPAL_RESET_VAR)
#define OPAL_RESET_VAR(var) { \
var = 0; \
pthread_barrier_wait (&barrier); \
}
#endif
static void *thread_test (void *arg) {
struct timeval start, stop, total;
double timing;
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_compare_exchange_strong_64(&var_64, &i, i+1);
}
OPAL_TEST_DONE("opal_atomic_compare_exchange_strong_64", var_64);
OPAL_RESET_VAR(var_64);
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_compare_exchange_strong_rel_64(&var_64, &i, i+1);
}
OPAL_TEST_DONE("opal_atomic_compare_exchange_strong_rel_64", var_64);
OPAL_RESET_VAR(var_64);
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_compare_exchange_strong_acq_64(&var_64, &i, i+1);
}
OPAL_TEST_DONE("opal_atomic_compare_exchange_strong_acq_64", var_64);
OPAL_RESET_VAR(var_64);
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_fetch_add_64(&var_64, 1);
}
OPAL_TEST_DONE("opal_atomic_fetch_add_64", var_64);
OPAL_RESET_VAR(var_64);
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_fetch_sub_64(&var_64, 1);
}
OPAL_TEST_DONE("opal_atomic_fetch_sub_64", var_64);
OPAL_RESET_VAR(var_64);
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_fetch_xor_64(&var_64, i);
}
OPAL_TEST_DONE("opal_atomic_fetch_xor_64", var_64);
OPAL_RESET_VAR(var_64);
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_swap_64(&var_64, i);
}
OPAL_TEST_DONE("opal_atomic_swap_64", var_64);
OPAL_RESET_VAR(var_64);
#if OPAL_HAVE_ATOMIC_LLSC_64
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
int ret;
opal_atomic_sc_64(&var_64, i, ret);
}
OPAL_TEST_DONE("opal_atomic_sc_64", var_64);
OPAL_RESET_VAR(var_64);
gettimeofday (&start, NULL);
for (int64_t i = 0 ; i < ITERATIONS ; ++i) {
int ret;
opal_atomic_sc_64(&var_64, i, ret);
}
OPAL_TEST_DONE("opal_atomic_ll_64", var_64);
OPAL_RESET_VAR(var_64);
#endif
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_compare_exchange_strong_32(&var_32, &i, i+1);
}
OPAL_TEST_DONE("opal_atomic_compare_exchange_strong_32", var_32);
OPAL_RESET_VAR(var_32);
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_compare_exchange_strong_rel_32(&var_32, &i, i+1);
}
OPAL_TEST_DONE("opal_atomic_compare_exchange_strong_rel_32", var_32);
OPAL_RESET_VAR(var_32);
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_compare_exchange_strong_acq_32(&var_32, &i, i+1);
}
OPAL_TEST_DONE("opal_atomic_compare_exchange_strong_acq_32", var_32);
OPAL_RESET_VAR(var_32);
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_fetch_add_32(&var_32, 1);
}
OPAL_TEST_DONE("opal_atomic_fetch_add_32", var_32);
OPAL_RESET_VAR(var_32);
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_fetch_sub_32(&var_32, 1);
}
OPAL_TEST_DONE("opal_atomic_fetch_sub_32", var_32);
OPAL_RESET_VAR(var_32);
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_fetch_xor_32(&var_32, i);
}
OPAL_TEST_DONE("opal_atomic_fetch_xor_32", var_32);
OPAL_RESET_VAR(var_32);
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
opal_atomic_swap_32(&var_32, i);
}
OPAL_TEST_DONE("opal_atomic_swap_32", var_32);
OPAL_RESET_VAR(var_32);
#if OPAL_HAVE_ATOMIC_LLSC_32
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
int ret;
opal_atomic_sc_32(&var_32, i, ret);
}
OPAL_TEST_DONE("opal_atomic_sc_32", var_32);
OPAL_RESET_VAR(var_32);
gettimeofday (&start, NULL);
for (int32_t i = 0 ; i < ITERATIONS ; ++i) {
int ret;
opal_atomic_sc_32(&var_32, i, ret);
}
OPAL_TEST_DONE("opal_atomic_ll_32", var_32);
OPAL_RESET_VAR(var_32);
#endif
return NULL;
}
int main(void) {
pthread_barrier_init (&barrier, NULL, OPAL_TEST_THREAD_COUNT);
pthread_t ts[OPAL_TEST_THREAD_COUNT];
for(int i = 0; i < OPAL_TEST_THREAD_COUNT; i++) {
pthread_create(&ts[i], NULL, &thread_test, NULL);
}
for(int i = 0; i < OPAL_TEST_THREAD_COUNT; i++) {
pthread_join(ts[i], NULL);
}
return 0;
}
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