diff options
Diffstat (limited to 'newlib/libc/sys/linux/linuxthreads/ecmutex.c')
| -rw-r--r-- | newlib/libc/sys/linux/linuxthreads/ecmutex.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/newlib/libc/sys/linux/linuxthreads/ecmutex.c b/newlib/libc/sys/linux/linuxthreads/ecmutex.c deleted file mode 100644 index ce54ddf33..000000000 --- a/newlib/libc/sys/linux/linuxthreads/ecmutex.c +++ /dev/null @@ -1,157 +0,0 @@ -/* Test of the error checking mutex and incidently also barriers. */ - -#include <errno.h> -#include <pthread.h> -#include <stdio.h> -#include <stdlib.h> - - -static pthread_mutex_t locks[] = -{ - PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP, - PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP, - PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP, - PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP, - PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP -}; -#define nlocks ((int) (sizeof (locks) / sizeof (locks[0]))) - -static pthread_barrier_t barrier; -#define SYNC pthread_barrier_wait (&barrier) - -#define NTHREADS nlocks - -#define ROUNDS 20 - - -static void * -worker (void *arg) -{ - /* We are locking the and unlocked the locks and check the errors. - Since we are using the error-checking variant the implementation - should report them. */ - int nr = (long int) arg; - int i; - void *result = NULL; - int retval; - - for (i = 0; i < ROUNDS; ++i) - { - /* Skip the rounds which would make other == own. */ - if (i % nlocks == 0) - continue; - - /* Get the "own" mutex. */ - if (pthread_mutex_trylock (&locks[nr]) != 0) - { - printf ("thread %d failed getting own mutex\n", nr); - result = (void *) 1; - } - - /* Try locking "own" mutex again. */ - retval = pthread_mutex_lock (&locks[nr]); - if (retval != EDEADLK) - { - printf ("thread %d failed getting own mutex\n", nr); - result = (void *) 1; - } - - /* Try to get a different semaphore. */ - SYNC; - retval = pthread_mutex_trylock (&locks[(nr + i) % nlocks]); - if (retval != EBUSY) - { - printf ("thread %d didn't deadlock on getting %d's lock\n", - nr, (nr + i) % nlocks); - result = (void *) 1; - } - - /* Try unlocking other's lock. */ - retval = pthread_mutex_unlock (&locks[(nr + i) % nlocks]); - if (retval != EPERM) - { - printf ("thread %d managed releasing mutex %d\n", - nr, (nr + i) % nlocks); - result = (void *) 1; - } - - /* All lock one mutex now. */ - SYNC; - retval = pthread_mutex_lock (&locks[i % nlocks]); - if (nr == (i % nlocks)) - { - if (retval != EDEADLK) - { - printf ("thread %d didn't deadlock on getting %d's lock\n", - nr, (nr + i) % nlocks); - result = (void *) 1; - } - if (pthread_mutex_unlock (&locks[i % nlocks]) != 0) - { - printf ("thread %d failed releasing own mutex\n", nr); - result = (void *) 1; - } - } - else - { - if (retval != 0) - { - printf ("thread %d failed acquiring mutex %d\n", - nr, i % nlocks); - result = (void *) 1; - } - else if (pthread_mutex_unlock (&locks[i % nlocks]) != 0) - { - printf ("thread %d failed releasing mutex %d\n", - nr, i % nlocks); - result = (void *) 1; - } - } - - /* Unlock the own lock. */ - SYNC; - if (nr != (i % nlocks) && pthread_mutex_unlock (&locks[nr]) != 0) - { - printf ("thread %d failed releasing own mutex\n", nr); - result = (void *) 1; - } - - /* Try unlocking again. */ - retval = pthread_mutex_unlock (&locks[nr]); - if (retval == 0) - { - printf ("thread %d managed releasing own mutex twice\n", nr); - result = (void *) 1; - } - } - - return result; -} - - -#define TEST_FUNCTION do_test () -static int -do_test (void) -{ - pthread_t threads[NTHREADS]; - int i; - void *res; - int result = 0; - - pthread_barrier_init (&barrier, NULL, NTHREADS); - - for (i = 0; i < NTHREADS; ++i) - if (pthread_create (&threads[i], NULL, worker, (void *) (long int) i) != 0) - { - printf ("failed to create thread %d: %m\n", i); - exit (1); - } - - for (i = 0; i < NTHREADS; ++i) - if (pthread_join (threads[i], &res) != 0 || res != NULL) - result = 1; - - return result; -} - -#include "../test-skeleton.c" |