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minix3/tests/test59.c

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/* Test the mthreads library. When the library is compiled with -DMDEBUG, you
* have to compile this test with -DMDEBUG as well or it won't link. MDEBUG
* lets you check the internal integrity of the library. */
#include <stdio.h>
#include <minix/mthread.h>
#include <signal.h>
#define thread_t mthread_thread_t
#define mutex_t mthread_mutex_t
#define cond_t mthread_cond_t
#define once_t mthread_once_t
#define attr_t mthread_attr_t
#define key_t mthread_key_t
#define event_t mthread_event_t
#define rwlock_t mthread_rwlock_t
int max_error = 5;
#include "common.h"
static int count, condition_met;
static int th_a, th_b, th_c, th_d, th_e, th_f, th_g, th_h;
static int mutex_a_step, mutex_b_step, mutex_c_step;
static mutex_t mu[3];
static cond_t condition;
static mutex_t *count_mutex, *condition_mutex;
static once_t once;
static key_t key[MTHREAD_KEYS_MAX+1];
static int values[4];
static int first;
static event_t event;
static int event_a_step, event_b_step;
static rwlock_t rwlock;
static int rwlock_a_step, rwlock_b_step;
#define VERIFY_RWLOCK(a, b, esub, eno) \
GEN_VERIFY(rwlock_a_step, a, rwlock_b_step, b, esub, eno)
#define VERIFY_EVENT(a, b, esub, eno) \
GEN_VERIFY(event_a_step, a, event_b_step, b, esub, eno)
#define GEN_VERIFY(acta, a, actb, b, esub, eno) do { \
if (acta != a) { \
printf("Expected %d %d, got: %d %d\n", \
a, b, acta, actb); \
err(esub, eno); \
} else if (actb != b) err(esub, eno); \
} while(0)
#define VERIFY_MUTEX(a,b,c,esub,eno) do { \
if (mutex_a_step != a) { \
printf("Expected %d %d %d, got: %d %d %d\n", \
a, b, c, mutex_a_step, mutex_b_step, mutex_c_step); \
err(esub, eno); \
} else if (mutex_b_step != b) err(esub, eno); \
else if (mutex_c_step != c) err(esub, eno); \
} while(0)
#define ROUNDS 14
#define THRESH1 3
#define THRESH2 8
#define MEG 1024*1024
#define MAGIC ((signed) 0xb4a3f1c2)
static void destr_a(void *arg);
static void destr_b(void *arg);
static void *thread_a(void *arg);
static void *thread_b(void *arg);
static void *thread_c(void *arg);
static void *thread_d(void *arg);
static void thread_e(void);
static void *thread_f(void *arg);
static void *thread_g(void *arg);
static void *thread_h(void *arg);
static void test_scheduling(void);
static void test_mutex(void);
static void test_condition(void);
static void test_attributes(void);
static void test_keys(void);
static void err(int subtest, int error);
/*===========================================================================*
* thread_a *
*===========================================================================*/
static void *thread_a(void *arg) {
th_a++;
return(NULL);
}
/*===========================================================================*
* thread_b *
*===========================================================================*/
static void *thread_b(void *arg) {
th_b++;
if (mthread_once(&once, thread_e) != 0) err(10, 1);
return(NULL);
}
/*===========================================================================*
* thread_c *
*===========================================================================*/
static void *thread_c(void *arg) {
th_c++;
return(NULL);
}
/*===========================================================================*
* thread_d *
*===========================================================================*/
static void *thread_d(void *arg) {
th_d++;
mthread_exit(NULL); /* Thread wants to stop running */
return(NULL);
}
/*===========================================================================*
* thread_e *
*===========================================================================*/
static void thread_e(void) {
th_e++;
}
/*===========================================================================*
* thread_f *
*===========================================================================*/
static void *thread_f(void *arg) {
if (mthread_mutex_lock(condition_mutex) != 0) err(12, 1);
th_f++;
if (mthread_cond_signal(&condition) != 0) err(12, 2);
if (mthread_mutex_unlock(condition_mutex) != 0) err(12, 3);
return(NULL);
}
/*===========================================================================*
* thread_g *
*===========================================================================*/
static void *thread_g(void *arg) {
char bigarray[MTHREAD_STACK_MIN + 1];
if (mthread_mutex_lock(condition_mutex) != 0) err(13, 1);
memset(bigarray, '\0', MTHREAD_STACK_MIN + 1); /* Actually allocate it */
th_g++;
if (mthread_cond_signal(&condition) != 0) err(13, 2);
if (mthread_mutex_unlock(condition_mutex) != 0) err(13, 3);
return(NULL);
}
/*===========================================================================*
* thread_h *
*===========================================================================*/
static void *thread_h(void *arg) {
char bigarray[2 * MEG];
int reply;
if (mthread_mutex_lock(condition_mutex) != 0) err(14, 1);
memset(bigarray, '\0', 2 * MEG); /* Actually allocate it */
th_h++;
if (mthread_cond_signal(&condition) != 0) err(14, 2);
if (mthread_mutex_unlock(condition_mutex) != 0) err(14, 3);
reply = *((int *) arg);
mthread_exit((void *) reply);
return(NULL);
}
/*===========================================================================*
* err *
*===========================================================================*/
static void err(int sub, int error) {
/* As we're running with multiple threads, they might all clobber the
* subtest variable. This wrapper prevents that from happening. */
subtest = sub;
e(error);
}
/*===========================================================================*
* 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
}
/*===========================================================================*
* mutex_a *
*===========================================================================*/
static void *mutex_a(void *arg)
{
mutex_t *mu = (mutex_t *) arg;
VERIFY_MUTEX(0, 0, 0, 3, 1);
if (mthread_mutex_lock(&mu[0]) != 0) err(3, 2);
/* Trying to acquire lock again should fail with EDEADLK */
if (mthread_mutex_lock(&mu[0]) != EDEADLK) err(3, 2);
#ifdef MTHREAD_STRICT
/* Try to acquire lock on uninitialized mutex; should fail with EINVAL */
/* Note: this check only works when libmthread is compiled with
* MTHREAD_STRICT turned on. In POSIX this situation is a MAY fail if... */
if (mthread_mutex_lock(&mu2) != EINVAL) {
err(3, 4);
mthread_mutex_unlock(&mu2);
}
if (mthread_mutex_trylock(&mu2) != EINVAL) {
err(3, 6);
mthread_mutex_unlock(&mu2);
}
#endif
if (mthread_mutex_trylock(&mu[1]) != 0) err(3, 8);
mutex_a_step = 1;
mthread_yield();
VERIFY_MUTEX(1, 0, 0, 3, 9);
if (mthread_mutex_trylock(&mu[2]) != EBUSY) err(3, 10);
if (mthread_mutex_lock(&mu[2]) != 0) err(3, 12); /* Transfer control to main
* loop.
*/
VERIFY_MUTEX(1, 0, 0, 3, 13);
if (mthread_mutex_unlock(&mu[0]) != 0) err(3, 14);
mutex_a_step = 2;
mthread_yield();
VERIFY_MUTEX(2, 1, 0, 3, 15);
if (mthread_mutex_unlock(&mu[1]) != 0) err(3, 16);
mutex_a_step = 3;
/* Try with faulty memory locations */
if (mthread_mutex_lock(NULL) == 0) err(3, 17);
if (mthread_mutex_trylock(NULL) == 0) err(3, 18);
if (mthread_mutex_unlock(NULL) == 0) err(3, 19);
if (mthread_mutex_unlock(&mu[2]) != 0) err(3, 20);
return(NULL);
}
/*===========================================================================*
* mutex_b *
*===========================================================================*/
static void *mutex_b(void *arg)
{
mutex_t *mu = (mutex_t *) arg;
/* At this point mutex_a thread should have acquired a lock on mu[0]. We
* should not be able to unlock it on behalf of that thread.
*/
VERIFY_MUTEX(1, 0, 0, 4, 1);
if (mthread_mutex_unlock(&mu[0]) != EPERM) err(4, 2);
/* Probing mu[0] to lock it should tell us it's locked */
if (mthread_mutex_trylock(&mu[0]) != EBUSY) err(4, 4);
if (mthread_mutex_lock(&mu[0]) != 0) err(4, 5);
mutex_b_step = 1;
VERIFY_MUTEX(2, 1, 0, 4, 6);
if (mthread_mutex_lock(&mu[1]) != 0) err(4, 6);
mutex_b_step = 2;
VERIFY_MUTEX(3, 2, 2, 4, 7);
mthread_yield();
VERIFY_MUTEX(3, 2, 2, 4, 8);
if (mthread_mutex_unlock(&mu[0]) != 0) err(4, 7);
mutex_b_step = 3;
mthread_yield();
if (mthread_mutex_unlock(&mu[1]) != 0) err(4, 8);
mutex_b_step = 4;
return(NULL);
}
/*===========================================================================*
* mutex_c *
*===========================================================================*/
static void *mutex_c(void *arg)
{
mutex_t *mu = (mutex_t *) arg;
VERIFY_MUTEX(1, 0, 0, 5, 1);
if (mthread_mutex_lock(&mu[1]) != 0) err(5, 2);
mutex_c_step = 1;
VERIFY_MUTEX(3, 1, 1, 5, 3);
mthread_yield();
VERIFY_MUTEX(3, 1, 1, 5, 4);
if (mthread_mutex_unlock(&mu[1]) != 0) err(5, 5);
mutex_c_step = 2;
if (mthread_mutex_lock(&mu[0]) != 0) err(5, 6);
mutex_c_step = 3;
VERIFY_MUTEX(3, 3, 3, 5, 7);
mthread_yield();
VERIFY_MUTEX(3, 4, 3, 5, 8);
if (mthread_mutex_unlock(&mu[0]) != 0) err(5, 9);
mutex_c_step = 4;
return(NULL);
}
/*===========================================================================*
* 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
}
/*===========================================================================*
* cond_a *
*===========================================================================*/
static void *cond_a(void *arg)
{
cond_t c;
int did_count = 0;
while(1) {
if (mthread_mutex_lock(condition_mutex) != 0) err(6, 1);
while (count >= THRESH1 && count <= THRESH2) {
if (mthread_cond_wait(&condition, condition_mutex) != 0)
err(6, 2);
}
if (mthread_mutex_unlock(condition_mutex) != 0) err(6, 3);
mthread_yield();
if (mthread_mutex_lock(count_mutex) != 0) err(6, 4);
count++;
did_count++;
if (mthread_mutex_unlock(count_mutex) != 0) err(6, 5);
if (count >= ROUNDS) break;
}
if (!(did_count <= count - (THRESH2 - THRESH1 + 1))) err(6, 6);
/* Try faulty addresses */
if (mthread_mutex_lock(condition_mutex) != 0) err(6, 7);
#ifdef MTHREAD_STRICT
/* Condition c is not initialized, so whatever we do with it should fail. */
if (mthread_cond_wait(&c, condition_mutex) == 0) err(6, 8);
if (mthread_cond_wait(NULL, condition_mutex) == 0) err(6, 9);
if (mthread_cond_signal(&c) == 0) err(6, 10);
if (mthread_mutex_unlock(condition_mutex) != 0) err(6, 11);
/* Try again with an unlocked mutex */
if (mthread_cond_wait(&c, condition_mutex) == 0) err(6, 12);
if (mthread_cond_signal(&c) == 0) err(6, 13);
#endif
/* And again with an unlocked mutex, but initialized c */
if (mthread_cond_init(&c, NULL) != 0) err(6, 14);
if (mthread_cond_wait(&c, condition_mutex) == 0) err(6, 15);
if (mthread_cond_signal(&c) != 0) err(6, 16);/*c.f., 6.10 this should work!*/
if (mthread_cond_destroy(&c) != 0) err(6, 17);
return(NULL);
}
/*===========================================================================*
* cond_b *
*===========================================================================*/
static void *cond_b(void *arg)
{
int did_count = 0;
while(1) {
if (mthread_mutex_lock(condition_mutex) != 0) err(7, 1);
if (count < THRESH1 || count > THRESH2)
if (mthread_cond_signal(&condition) != 0) err(7, 2);
if (mthread_mutex_unlock(condition_mutex) != 0) err(7, 3);
mthread_yield();
if (mthread_mutex_lock(count_mutex) != 0) err(7, 4);
count++;
did_count++;
if (mthread_mutex_unlock(count_mutex) != 0) err(7, 5);
if (count >= ROUNDS) break;
}
if (!(did_count >= count - (THRESH2 - THRESH1 + 1))) err(7, 6);
return(NULL);
}
/*===========================================================================*
* cond_broadcast *
*===========================================================================*/
static void *cond_broadcast(void *arg)
{
if (mthread_mutex_lock(condition_mutex) != 0) err(9, 1);
while(!condition_met)
if (mthread_cond_wait(&condition, condition_mutex) != 0) err(9, 2);
if (mthread_mutex_unlock(condition_mutex) != 0) err(9, 3);
if (mthread_mutex_lock(count_mutex) != 0) err(9, 4);
count++;
if (mthread_mutex_unlock(count_mutex) != 0) err(9, 5);
return(NULL);
}
/*===========================================================================*
* 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
}
/*===========================================================================*
* test_attributes *
*===========================================================================*/
static void test_attributes(void)
{
attr_t tattr;
thread_t tid;
int detachstate = -1;
unsigned int i, no_ints, stack_untouched = 1;
void *status, *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 defined(__i386__) || defined(__arm__)
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, &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
}
/*===========================================================================*
* destr_a *
*===========================================================================*/
static void destr_a(void *value)
{
int num;
num = (int) value;
/* This destructor must be called once for all of the values 1..4. */
if (num <= 0 || num > 4) err(15, 1);
if (values[num - 1] != 1) err(15, 2);
values[num - 1] = 2;
}
/*===========================================================================*
* destr_b *
*===========================================================================*/
static void destr_b(void *value)
{
/* This destructor must never trigger. */
err(16, 1);
}
/*===========================================================================*
* key_a *
*===========================================================================*/
static void *key_a(void *arg)
{
int i;
if (!first) mthread_yield();
/* Each new threads gets NULL-initialized values. */
for (i = 0; i < 5; i++)
if (mthread_getspecific(key[i]) != NULL) err(17, 1);
/* Make sure that the local values persist despite other threads' actions. */
for (i = 1; i < 5; i++)
if (mthread_setspecific(key[i], (void *) i) != 0) err(17, 2);
mthread_yield();
for (i = 1; i < 5; i++)
if (mthread_getspecific(key[i]) != (void *) i) err(17, 3);
mthread_yield();
/* The other thread has deleted this key by now. */
if (mthread_setspecific(key[3], NULL) != EINVAL) err(17, 4);
/* If a key's value is set to NULL, its destructor must not be called. */
if (mthread_setspecific(key[4], NULL) != 0) err(17, 5);
return(NULL);
}
/*===========================================================================*
* key_b *
*===========================================================================*/
static void *key_b(void *arg)
{
int i;
first = 1;
mthread_yield();
/* Each new threads gets NULL-initialized values. */
for (i = 0; i < 5; i++)
if (mthread_getspecific(key[i]) != NULL) err(18, 1);
for (i = 0; i < 4; i++)
if (mthread_setspecific(key[i], (void *) (i + 2)) != 0) err(18, 2);
mthread_yield();
/* Deleting a key will not cause a call its destructor at any point. */
if (mthread_key_delete(key[3]) != 0) err(18, 3);
mthread_exit(NULL);
return(NULL);
}
/*===========================================================================*
* key_c *
*===========================================================================*/
static void *key_c(void *arg)
{
/* The only thing that this thread should do, is set a value. */
if (mthread_setspecific(key[0], (void *) mthread_self()) != 0) err(19, 1);
mthread_yield();
if (!mthread_equal((thread_t) mthread_getspecific(key[0]), mthread_self()))
err(19, 2);
return(NULL);
}
/*===========================================================================*
* 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);
}
/*===========================================================================*
* event_a *
*===========================================================================*/
static void *event_a(void *arg)
{
VERIFY_EVENT(0, 0, 21, 1);
/* Wait for main thread to signal us */
if (mthread_event_wait(&event) != 0) err(21, 2);
/* Mark state transition and wakeup thread b */
event_a_step = 1;
if (mthread_event_fire(&event) != 0) err(21, 3);
mthread_yield();
VERIFY_EVENT(1, 1, 21, 4);
/* Wait for main thread to signal again with fireall */
if (mthread_event_wait(&event) != 0) err(21, 5);
/* Marks state transition and exit */
event_a_step = 2;
return(NULL);
}
/*===========================================================================*
* event_b *
*===========================================================================*/
static void *event_b(void *arg)
{
VERIFY_EVENT(0, 0, 22, 1);
/* Wait for thread a to signal us */
if (mthread_event_wait(&event) != 0) err(22, 2);
VERIFY_EVENT(1, 0, 22, 3);
/* Mark state transition and wait again, this time for main thread */
event_b_step = 1;
if (mthread_event_wait(&event) != 0) err(21, 5);
/* Marks state transition and exit */
event_b_step = 2;
return(NULL);
}
/*===========================================================================*
* 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);
}
/*===========================================================================*
* rwlock_a *
*===========================================================================*/
static void *rwlock_a(void *arg)
{
/* acquire read lock */
VERIFY_RWLOCK(0, 0, 24, 1);
if (mthread_rwlock_rdlock(&rwlock) != 0) err(24, 2);
rwlock_a_step = 1;
mthread_yield();
/* release read lock */
VERIFY_RWLOCK(1, 1, 24, 3);
if (mthread_rwlock_unlock(&rwlock) != 0) err(24, 4);
rwlock_a_step = 2;
/* get write lock */
if (mthread_rwlock_wrlock(&rwlock) != 0) err(24, 5);
rwlock_a_step = 3;
VERIFY_RWLOCK(3, 2, 24, 6);
/* release write lock */
if (mthread_rwlock_unlock(&rwlock) != 0) err(24, 7);
mthread_yield();
VERIFY_RWLOCK(3, 3, 24, 8);
return(NULL);
}
/*===========================================================================*
* rwlock_b *
*===========================================================================*/
static void *rwlock_b(void *arg)
{
/* Step 1: acquire the read lock */
VERIFY_RWLOCK(1, 0, 25, 1);
if (mthread_rwlock_rdlock(&rwlock) != 0) err(25, 2);
rwlock_b_step = 1;
mthread_yield();
/* We return back with first thread blocked on wrlock */
VERIFY_RWLOCK(2, 1, 25, 3);
rwlock_b_step = 2;
/* Release read lock and acquire write lock */
if (mthread_rwlock_unlock(&rwlock) != 0) err(25, 4);
if (mthread_rwlock_wrlock(&rwlock) != 0) err(25, 5);
rwlock_b_step = 3;
VERIFY_RWLOCK(3, 3, 25, 6);
if (mthread_rwlock_unlock(&rwlock) != 0) err(25, 6);
return(NULL);
}
/*===========================================================================*
* 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);
}
/*===========================================================================*
* main *
*===========================================================================*/
int main(void)
{
errct = 0;
th_a = th_b = th_c = th_d = th_e = th_f = th_g = th_h = 0;
mutex_a_step = mutex_b_step = mutex_c_step = 0;
event_a_step = event_b_step = 0;
rwlock_a_step = rwlock_b_step = 0;
once = MTHREAD_ONCE_INIT;
start(59);
test_scheduling();
test_mutex();
test_event();
test_rwlock();
test_condition();
test_attributes();
test_keys();
quit();
return(0); /* Not reachable */
}
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