/*===========================================================================*
* test_event *
*===========================================================================*/
static void test_event(void)
{
thread_t t[2];
int i;
if (mthread_event_init(&event) != 0) err(23, 1);
/* Try with faulty memory locations */
if (mthread_event_wait(NULL) == 0) err(23, 2);
if (mthread_event_fire(NULL) == 0) err(23, 3);
/* create threads */
if (mthread_create(&t[0], NULL, event_a, NULL) != 0) err(23, 4);
if (mthread_create(&t[1], NULL, event_b, NULL) != 0) err(23, 5);
/* wait for them to block on event */
mthread_yield_all();
VERIFY_EVENT(0, 0, 23, 6);
/* Fire event to wakeup thread a */
if (mthread_event_fire(&event) != 0) err(23, 7);
mthread_yield_all();
VERIFY_EVENT(1, 1, 23, 6);
/* Fire all to wakeup both a and b */
if (mthread_event_fire_all(&event) != 0) err(23, 7);
mthread_yield_all();
VERIFY_EVENT(2, 2, 23, 8);
/* We are done here */
for (i = 0; i < 2; i++)
if (mthread_join(t[i], NULL) != 0) err(23, 9);
if (mthread_event_destroy(&event) != 0) err(23, 10);
}
void* tab_sum(void* arg) {
struct indices* indice = (struct indices*) arg;
unsigned int a, b, m;
a = indice->a;
b = indice->b;
if (b<=a) {
if (affiche_arg)
printf("%u:%u %lu\t",a,b, tableau[a]);
return NULL;
}
m = (b+a)/2;
mthread_t th1, th2;
struct indices i1;
struct indices i2;
i1.a = a;
i1.b = m;
i2.a = m+1;
i2.b = b;
mthread_create(&th1, &tab_sum, (void*)(&i1));
mthread_create(&th2, &tab_sum, (void*)(&i2));
mthread_join(th1, NULL);
mthread_join(th2, NULL);
if (affiche_arg)
printf("%u:%u %lu\t",a,b, tableau[a] + tableau[m+1]);
tableau[a] += tableau[m+1];
return NULL;
}
//int main(int argc, char *argv[])
int main()
{
time_start(); {
mthread_t thread1, thread2;
void *retval1, *retval2;
int err;
printf("le main lance 2 threads...\n");
err = mthread_create(&thread1, threadfunc, "thread1");
assert(!err);
err = mthread_create(&thread2, threadfunc, "thread2");
assert(!err);
printf("le main a lancé les threads %p et %p\n",
thread1, thread2);
printf("le main attend les threads\n");
err = mthread_join(thread2, &retval2);
assert(!err);
err = mthread_join(thread1, &retval1);
assert(!err);
printf("les threads ont terminé en renvoyant '%s' and '%s'\n",
(char *) retval1, (char *) retval2);
}
time_end() ;
return 0;
}
/*===========================================================================*
* test_scheduling *
*===========================================================================*/
static void test_scheduling(void)
{
unsigned int i;
thread_t t[7];
#ifdef MDEBUG
mthread_verify();
#endif
th_a = th_b = th_c = th_d = th_e = 0;
if (mthread_create(&t[0], NULL, thread_a, NULL) != 0) err(1, 1);
if (mthread_create(&t[1], NULL, thread_a, NULL) != 0) err(1, 2);
if (mthread_create(&t[2], NULL, thread_a, NULL) != 0) err(1, 3);
if (mthread_create(&t[3], NULL, thread_d, NULL) != 0) err(1, 4);
if (mthread_once(&once, thread_e) != 0) err(1, 5);
mthread_yield();
if (mthread_create(&t[4], NULL, thread_c, NULL) != 0) err(1, 6);
mthread_yield();
if (mthread_create(&t[5], NULL, thread_b, NULL) != 0) err(1, 7);
if (mthread_create(&t[6], NULL, thread_a, NULL) != 0) err(1, 8);
mthread_yield();
mthread_yield();
if (mthread_once(&once, thread_e) != 0) err(1, 9);
if (mthread_once(&once, thread_e) != 0) err(1, 10);
if (th_a != 4) err(1, 11);
if (th_b != 1) err(1, 12);
if (th_c != 1) err(1, 13);
if (th_d != 1) err(1, 14);
if (th_e != 1) err(1, 15);
for (i = 0; i < (sizeof(t) / sizeof(thread_t)); i++) {
if (mthread_join(t[i], NULL) != 0) err(1, 16);
if (mthread_join(t[i], NULL) == 0) err(1, 17); /*Shouldn't work twice*/
}
#ifdef MDEBUG
mthread_verify();
#endif
if (mthread_create(NULL, NULL, NULL, NULL) == 0) err(1, 18);
mthread_yield();
#ifdef MDEBUG
mthread_verify();
#endif
if (mthread_create(&t[6], NULL, NULL, NULL) == 0) err(1, 19);
mthread_yield();
#ifdef MDEBUG
mthread_verify();
#endif
if (mthread_join(0xc0ffee, NULL) == 0) err(1, 20);
mthread_yield();
mthread_yield();
#ifdef MDEBUG
mthread_verify();
#endif
}
/*===========================================================================*
* worker_init *
*===========================================================================*/
PUBLIC void worker_init(struct worker_thread *wp)
{
/* Initialize worker thread */
if (!init) {
threads_init();
if (mthread_attr_init(&tattr) != 0)
panic("failed to initialize attribute");
if (mthread_attr_setstacksize(&tattr, TH_STACKSIZE) != 0)
panic("couldn't set default thread stack size");
if (mthread_attr_setdetachstate(&tattr, MTHREAD_CREATE_DETACHED) != 0)
panic("couldn't set default thread detach state");
pending = 0;
init = 1;
}
ASSERTW(wp);
wp->w_job.j_func = NULL; /* Mark not in use */
wp->w_next = NULL;
if (mutex_init(&wp->w_event_mutex, NULL) != 0)
panic("failed to initialize mutex");
if (cond_init(&wp->w_event, NULL) != 0)
panic("failed to initialize conditional variable");
if (mthread_create(&wp->w_tid, &tattr, worker_main, (void *) wp) != 0)
panic("unable to start thread");
yield();
}
/*===========================================================================*
* test_mutex *
*===========================================================================*/
static void test_mutex(void)
{
unsigned int i;
thread_t t[3];
#ifdef MDEBUG
mthread_verify();
#endif
if (mthread_mutex_init(&mu[0], NULL) != 0) err(2, 1);
if (mthread_mutex_init(&mu[1], NULL) != 0) err(2, 2);
if (mthread_mutex_init(&mu[2], NULL) != 0) err(2, 3);
if (mthread_create(&t[0], NULL, mutex_a, (void *) mu) != 0) err(2, 3);
if (mthread_create(&t[1], NULL, mutex_b, (void *) mu) != 0) err(2, 4);
if (mthread_create(&t[2], NULL, mutex_c, (void *) mu) != 0) err(2, 5);
if (mthread_mutex_lock(&mu[2]) != 0) err(2, 6);
mthread_yield_all(); /* Should result in a RUNNABLE mutex_a, and a blocked
* on mutex mutex_b and mutex_c.
*/
VERIFY_MUTEX(1, 0, 0, 2, 7); /* err(2, 7) */
if (mthread_mutex_unlock(&mu[2]) != 0) err(2, 8);
mthread_yield(); /* Should schedule mutex_a to release the lock on the
* mu[0] mutex. Consequently allowing mutex_b and mutex_c
* to acquire locks on the mutexes and exit.
*/
VERIFY_MUTEX(2, 0, 0, 2, 9);
for (i = 0; i < (sizeof(t) / sizeof(thread_t)); i++)
if (mthread_join(t[i], NULL) != 0) err(2, 10);
if (mthread_mutex_destroy(&mu[0]) != 0) err(2, 11);
if (mthread_mutex_destroy(&mu[1]) != 0) err(2, 12);
if (mthread_mutex_destroy(&mu[2]) != 0) err(2, 13);
#ifdef MDEBUG
mthread_verify();
#endif
}
/*===========================================================================*
* test_rwlock *
*===========================================================================*/
static void test_rwlock(void)
{
thread_t t[2];
int i;
if (mthread_rwlock_init(&rwlock) != 0) err(26, 1);
/* Try with faulty memory locations */
if (mthread_rwlock_rdlock(NULL) == 0) err(26, 2);
if (mthread_rwlock_wrlock(NULL) == 0) err(26, 3);
if (mthread_rwlock_unlock(NULL) == 0) err(26, 4);
/* Create the threads and start testing */
if (mthread_create(&t[0], NULL, rwlock_a, NULL) != 0) err(26, 5);
if (mthread_create(&t[1], NULL, rwlock_b, NULL) != 0) err(26, 6);
mthread_yield_all();
for (i = 0; i < 2; i++)
if (mthread_join(t[i], NULL) != 0) err(26, 7);
if (mthread_rwlock_destroy(&rwlock) != 0) err(26, 8);
}
/*===========================================================================*
* test_keys *
*===========================================================================*/
static void test_keys(void)
{
thread_t t[24];
int i, j;
/* Make sure that we can create exactly MTHREAD_KEYS_MAX keys. */
memset(key, 0, sizeof(key));
for (i = 0; i < MTHREAD_KEYS_MAX; i++) {
if (mthread_key_create(&key[i], NULL) != 0) err(20, 1);
for (j = 0; j < i - 1; j++)
if (key[i] == key[j]) err(20, 2);
}
if (mthread_key_create(&key[i], NULL) != EAGAIN) err(20, 3);
for (i = 3; i < MTHREAD_KEYS_MAX; i++)
if (mthread_key_delete(key[i]) != 0) err(20, 4);
/* Test basic good and bad value assignment and retrieval. */
if (mthread_setspecific(key[0], (void *) 1) != 0) err(20, 5);
if (mthread_setspecific(key[1], (void *) 2) != 0) err(20, 6);
if (mthread_setspecific(key[2], (void *) 3) != 0) err(20, 7);
if (mthread_setspecific(key[1], NULL) != 0) err(20, 8);
if (mthread_getspecific(key[0]) != (void *) 1) err(20, 9);
if (mthread_getspecific(key[1]) != NULL) err(20, 10);
if (mthread_getspecific(key[2]) != (void *) 3) err(20, 11);
if (mthread_setspecific(key[3], (void *) 4) != EINVAL) err(20, 12);
if (mthread_setspecific(key[3], NULL) != EINVAL) err(20, 13);
if (mthread_key_delete(key[1]) != 0) err(20, 14);
if (mthread_key_delete(key[2]) != 0) err(20, 15);
/* Test thread locality and destructors. */
if (mthread_key_create(&key[1], destr_a) != 0) err(20, 16);
if (mthread_key_create(&key[2], destr_a) != 0) err(20, 17);
if (mthread_key_create(&key[3], destr_b) != 0) err(20, 18);
if (mthread_key_create(&key[4], destr_b) != 0) err(20, 19);
if (mthread_getspecific(key[2]) != NULL) err(20, 20);
for (i = 0; i < 4; i++)
values[i] = 1;
first = 0;
if (mthread_create(&t[0], NULL, key_a, NULL) != 0) err(20, 21);
if (mthread_create(&t[1], NULL, key_b, NULL) != 0) err(20, 22);
for (i = 0; i < 2; i++)
if (mthread_join(t[i], NULL) != 0) err(20, 23);
/* The destructors must have changed all these values now. */
for (i = 0; i < 4; i++)
if (values[i] != 2) err(20, 24);
/* The original values must not have changed. */
if (mthread_getspecific(key[0]) != (void *) 1) err(20, 25);
/* Deleting a deleted key should not cause any problems either. */
if (mthread_key_delete(key[3]) != EINVAL) err(20, 26);
/* Make sure everything still works when using a larger number of threads.
* This should trigger reallocation code within libmthread's key handling.
*/
for (i = 0; i < 24; i++)
if (mthread_create(&t[i], NULL, key_c, NULL) != 0) err(20, 27);
for (i = 0; i < 24; i++)
if (mthread_join(t[i], NULL) != 0) err(20, 28);
}
/*===========================================================================*
* test_attributes *
*===========================================================================*/
static void test_attributes(void)
{
attr_t tattr;
thread_t tid;
int detachstate = -1, status = 0;
unsigned int i, no_ints, stack_untouched = 1;
void *stackaddr, *newstackaddr;
int *stackp;
size_t stacksize, newstacksize;
#ifdef MDEBUG
mthread_verify();
#endif
/* Initialize thread attribute and try to read the default values */
if (mthread_attr_init(&tattr) != 0) err(11, 1);
if (mthread_attr_getdetachstate(&tattr, &detachstate) != 0) err(11, 2);
if (detachstate != MTHREAD_CREATE_JOINABLE) err(11, 3);
if (mthread_attr_getstack(&tattr, &stackaddr, &stacksize) != 0) err(11, 4);
if (stackaddr != NULL) err(11, 5);
if (stacksize != (size_t) 0) err(11, 6);
/* Modify the attribute ... */
/* Try bogus detach state value */
if (mthread_attr_setdetachstate(&tattr, 0xc0ffee) == 0) err(11, 7);
if (mthread_attr_setdetachstate(&tattr, MTHREAD_CREATE_DETACHED) != 0)
err(11, 8);
newstacksize = (size_t) MEG;
if ((newstackaddr = malloc(newstacksize)) == NULL) err(11, 9);
if (mthread_attr_setstack(&tattr, newstackaddr, newstacksize) != 0)
err(11, 10);
/* ... and read back the new values. */
if (mthread_attr_getdetachstate(&tattr, &detachstate) != 0) err(11, 11);
if (detachstate != MTHREAD_CREATE_DETACHED) err(11, 12);
if (mthread_attr_getstack(&tattr, &stackaddr, &stacksize) != 0) err(11, 13);
if (stackaddr != newstackaddr) err(11, 14);
if (stacksize != newstacksize) err(11, 15);
if (mthread_attr_destroy(&tattr) != 0) err(11, 16);
free(newstackaddr);
/* Try to allocate too small a stack; it should fail and the attribute
* values should remain as is.
*/
newstacksize = MTHREAD_STACK_MIN - 1;
stackaddr = NULL;
stacksize = 0;
if (mthread_attr_init(&tattr) != 0) err(11, 17);
if ((newstackaddr = malloc(newstacksize)) == NULL) err(11, 18);
if (mthread_attr_setstack(&tattr, newstackaddr, newstacksize) != EINVAL)
err(11, 19);
if (mthread_attr_getstack(&tattr, &stackaddr, &stacksize) != 0) err(11, 21);
if (stackaddr == newstackaddr) err(11, 22);
if (stacksize == newstacksize) err(11, 23);
if (mthread_attr_destroy(&tattr) != 0) err(11, 24);
free(newstackaddr);
/* Tell attribute to let the system allocate a stack for the thread and only
* dictate how big that stack should be (2 megabyte, not actually allocated
* yet).
*/
if (mthread_attr_init(&tattr) != 0) err(11, 25);
if (mthread_attr_setstack(&tattr, NULL /* System allocated */, 2*MEG) != 0)
err(11, 26);
if (mthread_attr_getstack(&tattr, &stackaddr, &stacksize) != 0) err(11, 27);
if (stackaddr != NULL) err(11, 28);
if (stacksize != 2*MEG) err(11, 29);
/* Use set/getstacksize to set and retrieve new stack sizes */
stacksize = 0;
if (mthread_attr_getstacksize(&tattr, &stacksize) != 0) err(11, 30);
if (stacksize != 2*MEG) err(11, 31);
newstacksize = MEG;
if (mthread_attr_setstacksize(&tattr, newstacksize) != 0) err(11, 32);
if (mthread_attr_getstacksize(&tattr, &stacksize) != 0) err(11, 33);
if (stacksize != newstacksize) err(11, 34);
if (mthread_attr_destroy(&tattr) != 0) err(11, 35);
/* Perform same tests, but also actually use them in a thread */
if (mthread_attr_init(&tattr) != 0) err(11, 36);
if (mthread_attr_setdetachstate(&tattr, MTHREAD_CREATE_DETACHED) != 0)
err(11, 37);
condition_mutex = &mu[0];
if (mthread_mutex_init(condition_mutex, NULL) != 0) err(11, 38);
if (mthread_cond_init(&condition, NULL) != 0) err(11, 39);
if (mthread_mutex_lock(condition_mutex) != 0) err(11, 40);
if (mthread_create(&tid, &tattr, thread_f, NULL) != 0) err(11, 41);
/* Wait for thread_f to finish */
if (mthread_cond_wait(&condition, condition_mutex) != 0) err(11, 42);
if (mthread_mutex_unlock(condition_mutex) != 0) err(11, 43);
if (th_f != 1) err(11, 44);
/* Joining a detached thread should fail */
if (mthread_join(tid, NULL) == 0) err(11, 45);
if (mthread_attr_destroy(&tattr) != 0) err(11, 46);
/* Try telling the attribute how large the stack should be */
if (mthread_attr_init(&tattr) != 0) err(11, 47);
if (mthread_attr_setstack(&tattr, NULL, 2 * MTHREAD_STACK_MIN) != 0)
err(11, 48);
if (mthread_mutex_lock(condition_mutex) != 0) err(11, 49);
if (mthread_create(&tid, &tattr, thread_g, NULL) != 0) err(11, 50);
/* Wait for thread_g to finish */
if (mthread_cond_wait(&condition, condition_mutex) != 0) err(11, 51);
if (mthread_mutex_unlock(condition_mutex) != 0) err(11, 52);
if (th_g != 1) err(11, 53);
if (mthread_attr_setdetachstate(&tattr, MTHREAD_CREATE_DETACHED) != 0)
err(11, 54); /* Shouldn't affect the join below, as thread is already
* running as joinable. If this attribute should be
* modified after thread creation, use mthread_detach().
*/
if (mthread_join(tid, NULL) != 0) err(11, 55);
if (mthread_attr_destroy(&tattr) != 0) err(11, 56);
/* Try telling the attribute how large the stack should be and where it is
* located.
*/
if (mthread_attr_init(&tattr) != 0) err(11, 57);
stacksize = 3 * MEG;
/* Make sure this test is meaningful. We have to verify that we actually
* use a custom stack. So we're going to allocate an array on the stack in
* thread_h that should at least be bigger than the default stack size
* allocated by the system.
*/
if (2 * MEG <= MTHREAD_STACK_MIN) err(11, 58);
if ((stackaddr = malloc(stacksize)) == NULL) err(11, 59);
/* Fill stack with pattern. We assume that the beginning of the stack
* should be overwritten with something and that the end should remain
* untouched. The thread will zero-fill around two-thirds of the stack with
* zeroes, so we can check if that's true.
*/
stackp = stackaddr;
no_ints = stacksize / sizeof(int);
for (i = 0; i < no_ints ; i++)
stackp[i] = MAGIC;
if (mthread_attr_setstack(&tattr, stackaddr, stacksize) != 0) err(11, 60);
if (mthread_mutex_lock(condition_mutex) != 0) err(11, 61);
if (mthread_create(&tid, &tattr, thread_h, (void *) &stacksize) != 0)
err(11, 62);
/* Wait for thread h to finish */
if (mthread_cond_wait(&condition, condition_mutex) != 0) err(11, 63);
if (th_h != 1) err(11, 64);
if (mthread_mutex_unlock(condition_mutex) != 0) err(11, 65);
/* Verify stack hypothesis; we assume a stack is used from the top and grows
* downwards.
*/
#if (_MINIX_CHIP == _CHIP_INTEL)
if (stackp[0] != MAGIC) err(11, 66); /* End of the stack */
for (i = no_ints - 1 - 16; i < no_ints; i++)
if (stackp[i] != MAGIC) stack_untouched = 0;
if (stack_untouched) err(11, 67); /* Beginning of the stack */
if (stackp[no_ints / 2] != 0) err(11, 68);/*Zero half way through the stack*/
#else
#error "Unsupported chip for this test"
#endif
if (mthread_join(tid, (void *) &status) != 0) err(11, 69);
if ((size_t) status != stacksize) err(11, 70);
if (mthread_attr_destroy(&tattr) != 0) err(11, 71);
if (mthread_mutex_destroy(condition_mutex) != 0) err(11, 72);
if (mthread_cond_destroy(&condition) != 0) err(11, 73);
free(stackaddr);
#ifdef MDEBUG
mthread_verify();
#endif
}
/*===========================================================================*
* test_condition *
*===========================================================================*/
static void test_condition(void)
{
#define NTHREADS 10
int i;
thread_t t[2], s[NTHREADS];
count_mutex = &mu[0];
condition_mutex = &mu[1];
/* Test simple condition variable behavior: Two threads increase a counter.
* At some point one thread waits for a condition and the other thread
* signals the condition. Consequently, one thread increased the counter a
* few times less than other thread. Although the difference is 'random',
* there is a guaranteed minimum difference that we can measure.
*/
#ifdef MDEBUG
mthread_verify();
#endif
if (mthread_mutex_init(count_mutex, NULL) != 0) err(8, 1);
if (mthread_mutex_init(condition_mutex, NULL) != 0) err(8, 2);
if (mthread_cond_init(&condition, NULL) != 0) err(8, 3);
count = 0;
if (mthread_create(&t[0], NULL, cond_a, NULL) != 0) err(8, 4);
if (mthread_create(&t[1], NULL, cond_b, NULL) != 0) err(8, 5);
for (i = 0; i < (sizeof(t) / sizeof(thread_t)); i++)
if (mthread_join(t[i], NULL) != 0) err(8, 6);
if (mthread_mutex_destroy(count_mutex) != 0) err(8, 7);
if (mthread_mutex_destroy(condition_mutex) != 0) err(8, 8);
if (mthread_cond_destroy(&condition) != 0) err(8, 9);
#ifdef MTHREAD_STRICT
/* Let's try to destroy it again. Should fails as it's uninitialized. */
/* Note: this only works when libmthread is compiled with MTHREAD_STRICT. In
* POSIX this situation is a MAY fail if... */
if (mthread_cond_destroy(&condition) == 0) err(8, 10);
#endif
#ifdef MDEBUG
mthread_verify();
#endif
/* Test signal broadcasting: spawn N threads that will increase a counter
* after a condition has been signaled. The counter must equal N. */
if (mthread_mutex_init(count_mutex, NULL) != 0) err(8, 11);
if (mthread_mutex_init(condition_mutex, NULL) != 0) err(8, 12);
if (mthread_cond_init(&condition, NULL) != 0) err(8, 13);
condition_met = count = 0;
for (i = 0; i < NTHREADS; i++)
if (mthread_create(&s[i], NULL, cond_broadcast, NULL) != 0) err(8, 14);
/* Allow other threads to block on the condition variable. If we don't yield,
* the threads will only start running when we call mthread_join below. In
* that case the while loop in cond_broadcast will never evaluate to true.
*/
mthread_yield();
if (mthread_mutex_lock(condition_mutex) != 0) err(8, 15);
condition_met = 1;
if (mthread_cond_broadcast(&condition) != 0) err(8, 16);
if (mthread_mutex_unlock(condition_mutex) != 0) err(8, 17);
for (i = 0; i < (sizeof(s) / sizeof(thread_t)); i++)
if (mthread_join(s[i], NULL) != 0) err(8, 18);
if (count != NTHREADS) err(8, 19);
if (mthread_mutex_destroy(count_mutex) != 0) err(8, 20);
if (mthread_mutex_destroy(condition_mutex) != 0) err(8, 21);
if (mthread_cond_destroy(&condition) != 0) err(8, 22);
#ifdef MTHREAD_STRICT
/* Again, destroying the condition variable twice shouldn't work */
/* See previous note about MTHREAD_STRICT */
if (mthread_cond_destroy(&condition) == 0) err(8, 23);
#endif
#ifdef MDEBUG
mthread_verify();
#endif
}