add PI mutex tests

[libc-test] / src / functional / pthread_mutex_pi.c

diff --git a/src/functional/pthread_mutex_pi.c b/src/functional/pthread_mutex_pi.c
new file mode 100644 (file)
index 0000000..3a47cec
--- /dev/null
+++ b/src/functional/pthread_mutex_pi.c
@@ -0,0 +1,168 @@
+/* testing pthread mutex behaviour with various attributes */
+#include <pthread.h>
+#include <semaphore.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include "test.h"
+
+#define T(f) if ((r=(f))) t_error(#f " failed: %s\n", strerror(r))
+#define E(f) if (f) t_error(#f " failed: %s\n", strerror(errno))
+
+static void *relock(void *arg)
+{
+       void **a = arg;
+       int r;
+
+       T(pthread_mutex_lock(a[0]));
+       E(sem_post(a[1]));
+       *(int*)a[2] = pthread_mutex_lock(a[0]);
+       E(sem_post(a[1]));
+
+       T(pthread_mutex_unlock(a[0]));
+       if (*(int*)a[2] == 0)
+               T(pthread_mutex_unlock(a[0]));
+       return 0;
+}
+
+static int test_relock(int mtype)
+{
+       struct timespec ts;
+       pthread_t t;
+       pthread_mutex_t m;
+       pthread_mutexattr_t ma;
+       sem_t s;
+       int i;
+       int r;
+       void *p;
+       void *a[] = {&m,&s,&i};
+
+       T(pthread_mutexattr_init(&ma));
+       T(pthread_mutexattr_settype(&ma, mtype));
+       T(pthread_mutexattr_setprotocol(&ma, PTHREAD_PRIO_INHERIT));
+       T(pthread_mutex_init(a[0], &ma));
+       T(pthread_mutexattr_destroy(&ma));
+       E(sem_init(a[1], 0, 0));
+       T(pthread_create(&t, 0, relock, a));
+       E(sem_wait(a[1]));
+       E(clock_gettime(CLOCK_REALTIME, &ts));
+       ts.tv_nsec += 100*1000*1000;
+       if (ts.tv_nsec >= 1000*1000*1000) {
+               ts.tv_nsec -= 1000*1000*1000;
+               ts.tv_sec += 1;
+       }
+       r = sem_timedwait(a[1],&ts);
+       if (r == -1) {
+               if (errno != ETIMEDOUT)
+                       t_error("sem_timedwait failed with unexpected error: %s\n", strerror(errno));
+               /* leave the deadlocked relock thread running */
+               return -1;
+       }
+       T(pthread_join(t, &p));
+       T(pthread_mutex_destroy(a[0]));
+       E(sem_destroy(a[1]));
+       return i;
+}
+
+static void *unlock(void *arg)
+{
+       void **a = arg;
+
+       *(int*)a[1] = pthread_mutex_unlock(a[0]);
+       return 0;
+}
+
+static int test_unlock(int mtype)
+{
+       pthread_t t;
+       pthread_mutex_t m;
+       pthread_mutexattr_t ma;
+       int i;
+       int r;
+       void *p;
+       void *a[] = {&m,&i};
+
+       T(pthread_mutexattr_init(&ma));
+       T(pthread_mutexattr_settype(&ma, mtype));
+       T(pthread_mutexattr_setprotocol(&ma, PTHREAD_PRIO_INHERIT));
+       T(pthread_mutex_init(a[0], &ma));
+       T(pthread_mutexattr_destroy(&ma));
+       T(pthread_create(&t, 0, unlock, a));
+       T(pthread_join(t, &p));
+       T(pthread_mutex_destroy(a[0]));
+       return i;
+}
+
+static int test_unlock_other(int mtype)
+{
+       pthread_t t;
+       pthread_mutex_t m;
+       pthread_mutexattr_t ma;
+       int i;
+       int r;
+       void *p;
+       void *a[] = {&m,&i};
+
+       T(pthread_mutexattr_init(&ma));
+       T(pthread_mutexattr_settype(&ma, mtype));
+       T(pthread_mutexattr_setprotocol(&ma, PTHREAD_PRIO_INHERIT));
+       T(pthread_mutex_init(a[0], &ma));
+       T(pthread_mutexattr_destroy(&ma));
+       T(pthread_mutex_lock(a[0]));
+       T(pthread_create(&t, 0, unlock, a));
+       T(pthread_join(t, &p));
+       T(pthread_mutex_unlock(a[0]));
+       T(pthread_mutex_destroy(a[0]));
+       return i;
+}
+
+static void test_mutexattr()
+{
+       pthread_mutex_t m;
+       pthread_mutexattr_t a;
+       int r;
+       int i;
+
+       T(pthread_mutexattr_init(&a));
+       T(pthread_mutexattr_gettype(&a, &i));
+       if (i != PTHREAD_MUTEX_DEFAULT)
+               t_error("default mutex type is %d, wanted PTHREAD_MUTEX_DEFAULT (%d)\n", i, PTHREAD_MUTEX_DEFAULT);
+       T(pthread_mutexattr_settype(&a, PTHREAD_MUTEX_ERRORCHECK));
+       T(pthread_mutexattr_gettype(&a, &i));
+       if (i != PTHREAD_MUTEX_ERRORCHECK)
+               t_error("setting error check mutex type failed failed: got %d, wanted %d\n", i, PTHREAD_MUTEX_ERRORCHECK);
+       T(pthread_mutexattr_destroy(&a));
+}
+
+int main(void)
+{
+       int i;
+
+       test_mutexattr();
+
+       i = test_relock(PTHREAD_MUTEX_NORMAL);
+       if (i != -1)
+               t_error("PTHREAD_MUTEX_NORMAL relock did not deadlock, got %s\n", strerror(i));
+       i = test_relock(PTHREAD_MUTEX_ERRORCHECK);
+       if (i != EDEADLK)
+               t_error("PTHREAD_MUTEX_ERRORCHECK relock did not return EDEADLK, got %s\n", i==-1?"deadlock":strerror(i));
+       i = test_relock(PTHREAD_MUTEX_RECURSIVE);
+       if (i != 0)
+               t_error("PTHREAD_MUTEX_RECURSIVE relock did not succed, got %s\n", i==-1?"deadlock":strerror(i));
+
+       i = test_unlock(PTHREAD_MUTEX_ERRORCHECK);
+       if (i != EPERM)
+               t_error("PTHREAD_MUTEX_ERRORCHECK unlock did not return EPERM, got %s\n", strerror(i));
+       i = test_unlock(PTHREAD_MUTEX_RECURSIVE);
+       if (i != EPERM)
+               t_error("PTHREAD_MUTEX_RECURSIVE unlock did not return EPERM, got %s\n", strerror(i));
+
+       i = test_unlock_other(PTHREAD_MUTEX_ERRORCHECK);
+       if (i != EPERM)
+               t_error("PTHREAD_MUTEX_ERRORCHECK unlock did not return EPERM, got %s\n", strerror(i));
+       i = test_unlock_other(PTHREAD_MUTEX_RECURSIVE);
+       if (i != EPERM)
+               t_error("PTHREAD_MUTEX_RECURSIVE unlock did not return EPERM, got %s\n", strerror(i));
+
+       return t_status;
+}