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/*
@mindmaze_header@
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <limits.h>
#include "mmlib.h"
#include "mmpredefs.h"
#include "mmprofile.h"
#include "mmthread.h"
#define TEST_LOCK_REFEREE_SERVER_BIN TOP_BUILDDIR"/src/"LT_OBJDIR"/lock-referee.exe"
/*************************************************************************
* *
* Performance tests *
* *
*************************************************************************/
struct perf_data {
mm_thr_mutex_t mtx;
int iter;
char fill_up[64-sizeof(mm_thr_mutex_t)+sizeof(int)];
};
#define NUM_ITERATION 10000
#define NUM_THREAD_PER_LOCK_DEFAULT 16
#define NUM_LOCK_DEFAULT 4
#define NUM_THREAD_PER_LOCK_MAX 128
#define NUM_LOCK_MAX 32
static struct perf_data data_array[32];
static int num_lock = NUM_LOCK_DEFAULT;
static int num_thread_per_lock = NUM_THREAD_PER_LOCK_DEFAULT;
static
void* lock_perf_routine(void* arg)
{
struct perf_data* data;
int i, ind;
ind = *(int*)arg;
for (i = 0; i < NUM_ITERATION; i++) {
data = &data_array[ind];
mm_thr_mutex_lock(&data->mtx);
if (ind == 0)
mm_toc();
data->iter++;
if (ind == 0)
mm_tic();
mm_thr_mutex_unlock(&data->mtx);
if (++ind == num_lock)
ind = 0;
}
return NULL;
}
static
int run_perf_lock_contended(int flags)
{
mm_thread_t thids[NUM_THREAD_PER_LOCK_MAX*NUM_LOCK_MAX];
int initial_lock_index[MM_NELEM(thids)];
int i;
int num_thids = num_thread_per_lock*num_lock;
mm_profile_reset(0);
for (i = 0; i < num_lock; i++) {
mm_thr_mutex_init(&data_array[i].mtx, flags);
mm_thr_mutex_lock(&data_array[i].mtx);
}
// Spawn threads
for (i = 0; i < num_thids; i++) {
initial_lock_index[i] = i % num_lock;
mm_thr_create(&thids[i], lock_perf_routine, &initial_lock_index[i]);
}
mm_relative_sleep_ms(100);
// Unlock mutex now
for (i = 0; i < num_lock; i++) {
if (i == 0)
mm_tic();
mm_thr_mutex_unlock(&data_array[i].mtx);
}
// Wait until all theads have finished
for (i = 0; i < num_thids; i++)
mm_thr_join(thids[i], NULL);
for (i = 0; i < num_lock; i++)
mm_thr_mutex_deinit(&data_array[0].mtx);
printf("\ncontended case with flags=0x%08x:\n", flags);
fflush(stdout);
mm_profile_print(PROF_DEFAULT, 1);
return 0;
}
static
int run_perf_lock_uncontended(int flags)
{
int i;
mm_profile_reset(0);
mm_thr_mutex_init(&data_array[0].mtx, flags);
for (i = 0; i < NUM_ITERATION; i++) {
mm_tic();
mm_thr_mutex_lock(&data_array[0].mtx);
mm_thr_mutex_unlock(&data_array[0].mtx);
mm_toc();
}
mm_thr_mutex_deinit(&data_array[0].mtx);
printf("\nuncontended case with flags=0x%08x\n", flags);
fflush(stdout);
mm_profile_print(PROF_DEFAULT, 1);
return 0;
}
int main(int argc, char* argv[])
{
#if _WIN32
mm_setenv("MMLIB_LOCKREF_BIN", TEST_LOCK_REFEREE_SERVER_BIN, 1);
setbuf(stdout, NULL);
#endif
if (argc > 1)
num_lock = atoi(argv[1]);
if (argc > 2)
num_thread_per_lock = atoi(argv[2]);
printf("num_lock=%i num_thread_per_lock=%i\n",
num_lock, num_thread_per_lock);
run_perf_lock_uncontended(0);
run_perf_lock_uncontended(MM_THR_PSHARED);
printf("\n\n");
run_perf_lock_contended(0);
run_perf_lock_contended(MM_THR_PSHARED);
return EXIT_SUCCESS;
}
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