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#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#if !defined(_WIN32)
# if !defined(NO_CONFIG_H)
# include "config.h"
# endif
#endif
#include "../../src/private.h"
#if HAVE_ERR_H
# include <err.h>
#else
# define err(rc,msg,...) do { perror(msg); exit(rc); } while (0)
# define errx(rc,msg,...) do { puts(msg); exit(rc); } while (0)
#endif
#include <pthread_workqueue.h>
static int work_cnt;
pthread_workqueue_t wq;
void additem(void (*func)(void *),
void * arg)
{
int rv;
rv = pthread_workqueue_additem_np(wq, *func, arg, NULL, NULL);
if (rv != 0)
errx(1, "unable to add item: %s", strerror(rv));
puts("added item\n");
}
void
compute(void *arg)
{
int *count = (int *) arg;
#define nval 5000
int val[nval];
int i,j;
/* Do some useless computation */
for (i = 0; i < nval; i++) {
val[i] = INT_MAX;
}
for (j = 0; j < nval; j++) {
for (i = 0; i < nval; i++) {
val[i] /= 3;
val[i] *= 2;
val[i] /= 4;
val[i] *= 5;
}
}
if (count != NULL)
(*count)--;
}
void
sleepy(void *msg)
{
printf("%s\n", (char *) msg);
if (strcmp(msg, "done") == 0)
exit(0);
sleep(random() % 6);
}
void
lazy(void *arg)
{
sleep(3);
printf("item %lu complete\n", (unsigned long) arg);
work_cnt--;
}
void
run_blocking_test(void)
{
const int rounds = 50;
long i = 0;
work_cnt = rounds;
for (i = 0; i < rounds; i++) {
additem(lazy, (void *) i);
}
while (work_cnt > 0)
sleep(1);
}
void
run_cond_wait_test(void)
{
const int rounds = 10;
long i = 0;
sleep(3); /* Allow time for the workers to enter pthread_cond_wait() */
work_cnt = rounds;
for (i = 0; i < rounds; i++) {
additem(lazy, (void *) i);
sleep(1);
}
while (work_cnt > 0)
sleep(1);
}
void
run_load_test(void)
{
char buf[16];
int i = 0;
for (i = 0; i < 1024; i++) {
sprintf(buf, "%d", i);
additem(sleepy, strdup(buf));
additem(compute, NULL);
}
additem(sleepy, "done");
}
/* Try to overwhelm the CPU with computation requests */
void
run_stress_test(int rounds)
{
int i = 0;
work_cnt = rounds;
for (i = 0; i < rounds; i++) {
additem(compute, &work_cnt);
}
while (work_cnt > 0)
sleep(1);
puts("====== stress test complete =======");
}
int main() {
int rv;
printf("pthread_workqueue_create_np().. ");
rv = pthread_workqueue_create_np(&wq, NULL);
if (rv != 0)
err(1, "failed");
printf("ok\n");
printf("stress test.. ");
run_stress_test(25);
printf("ok\n");
//run_deadlock_test();
// run_cond_wait_test();
// run_blocking_test();
//run_load_test();
puts("All tests completed.\n");
exit(0);
}
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