/* Test mutex */
static int
test_mutex(void){
sync_mutex_t m1, m2;
printf("UNIT TEST | sync/mutex: ");
m1 = sync_create_mutex();
test_assert(m1);
m2 = sync_create_mutex();
test_assert(m2);
/* Test simple operations */
test_assert(sync_try_acquire(m1));
test_assert(!sync_try_acquire(m1));
sync_release(m1);
test_assert(sync_try_acquire(m1));
sync_release(m1);
sync_acquire(m1);
sync_release(m1);
sync_acquire(m1);
sync_release(m1);
/* Test independance */
test_assert(sync_try_acquire(m1));
test_assert(sync_try_acquire(m2));
sync_release(m1);
sync_release(m2);
/* Clean up */
sync_destroy_mutex(m1);
sync_destroy_mutex(m2);
printf("PASSED\n");
return 0;
}
int sys_sync_create_object(sync_object_type_t obj_type,
void *uobj,uint8_t *attrs,
ulong_t flags)
{
kern_sync_object_t *kobj=NULL;
int r;
sync_id_t id;
task_t *caller=current_task();
uint8_t shared;
task_sync_data_t *sync_data;
if( !s_check_system_capability(SYS_CAP_SYNC) ) {
return ERR(-EPERM);
}
if( !uobj || obj_type > __SO_MAX_TYPE ) {
return ERR(-EINVAL);
}
if( !attrs ) {
shared=0;
} else {
if( get_user(shared,attrs) ) {
return ERR(-EINVAL);
}
if( shared != PTHREAD_PROCESS_PRIVATE &&
shared != PTHREAD_PROCESS_SHARED ) {
return ERR(-EINVAL);
}
}
sync_data=get_task_sync_data(caller);
if( !sync_data ) {
return ERR(-EAGAIN);
}
LOCK_SYNC_DATA_W(sync_data);
r=__sync_allocate_id(caller,shared,&id);
if( r ) {
goto put_sync_data;
}
UNLOCK_SYNC_DATA_W(sync_data);
switch( obj_type ) {
case __SO_MUTEX:
r=sync_create_mutex(&kobj,uobj,attrs,flags);
break;
case __SO_RAWEVENT:
r=sync_create_uevent(&kobj,uobj,attrs,flags);
break;
case __SO_RWSEMAPHORE:
r=sync_create_urw_semaphore(&kobj,uobj,attrs,flags);
break;
case __SO_CONDVAR:
case __SO_SEMAPHORE:
default:
r=-EINVAL;
break;
}
/* Copy ID to user without holding the lock for better performance. */
if( !r ) {
r=copy_to_user(uobj,&id,sizeof(id));
}
LOCK_SYNC_DATA_W(sync_data);
if( r ) {
goto put_id;
}
__install_sync_object(caller,kobj,id);
UNLOCK_SYNC_DATA_W(sync_data);
return 0;
put_id:
__sync_free_id(caller,id);
put_sync_data:
UNLOCK_SYNC_DATA_W(sync_data);
/* Free object, if any. */
if( kobj ) {
sync_put_object(kobj);
}
release_task_sync_data(sync_data);
return ERR(r);
}
