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This commit is contained in:
Bob Halley
1998-11-12 02:02:52 +00:00
parent f671a5c51c
commit c8e7460242
3 changed files with 321 additions and 0 deletions
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100
bin/tests/rwlock_test.c Normal file
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#include "attribute.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <isc/assertions.h>
#include <isc/thread.h>
#include <isc/result.h>
#include <isc/rwlock.h>
isc_rwlock_t lock;
static void *
run1(void *arg) {
char *message = arg;
INSIST(isc_rwlock_lock(&lock, isc_rwlocktype_read) == ISC_R_SUCCESS);
printf("%s got READ lock\n", message);
sleep(1);
printf("%s giving up READ lock\n", message);
INSIST(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
ISC_R_SUCCESS);
INSIST(isc_rwlock_lock(&lock, isc_rwlocktype_read) == ISC_R_SUCCESS);
printf("%s got READ lock\n", message);
sleep(1);
printf("%s giving up READ lock\n", message);
INSIST(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
ISC_R_SUCCESS);
INSIST(isc_rwlock_lock(&lock, isc_rwlocktype_write) == ISC_R_SUCCESS);
printf("%s got WRITE lock\n", message);
sleep(1);
printf("%s giving up WRITE lock\n", message);
INSIST(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
ISC_R_SUCCESS);
return (NULL);
}
static void *
run2(void *arg) {
char *message = arg;
INSIST(isc_rwlock_lock(&lock, isc_rwlocktype_write) == ISC_R_SUCCESS);
printf("%s got WRITE lock\n", message);
sleep(1);
printf("%s giving up WRITE lock\n", message);
INSIST(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
ISC_R_SUCCESS);
INSIST(isc_rwlock_lock(&lock, isc_rwlocktype_write) == ISC_R_SUCCESS);
printf("%s got WRITE lock\n", message);
sleep(1);
printf("%s giving up WRITE lock\n", message);
INSIST(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
ISC_R_SUCCESS);
INSIST(isc_rwlock_lock(&lock, isc_rwlocktype_read) == ISC_R_SUCCESS);
printf("%s got READ lock\n", message);
sleep(1);
printf("%s giving up READ lock\n", message);
INSIST(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
ISC_R_SUCCESS);
return (NULL);
}
void
main(int argc, char *argv[]) {
unsigned int nworkers;
unsigned int i;
isc_thread_t workers[24];
char name[100];
void *dupname;
if (argc > 1)
nworkers = atoi(argv[1]);
else
nworkers = 2;
if (nworkers > 24)
nworkers = 24;
printf("%d workers\n", nworkers);
INSIST(isc_rwlock_init(&lock) == ISC_R_SUCCESS);
for (i = 0; i < nworkers; i++) {
sprintf(name, "%02u", i);
dupname = strdup(name);
INSIST(dupname != NULL);
if (i != 0 && i % 3 == 0)
INSIST(isc_thread_create(run2, dupname, &workers[i]) ==
ISC_R_SUCCESS);
else
INSIST(isc_thread_create(run1, dupname, &workers[i]) ==
ISC_R_SUCCESS);
}
for (i = 0; i < nworkers; i++)
(void)isc_thread_join(workers[i], NULL);
isc_rwlock_destroy(&lock);
}