static void release_semaphore(rtems_id timer, void *arg)
{
/* The arg is NULL */
test_context *ctx = &ctx_instance;
rtems_status_code sc;
if (
_Thread_Wait_flags_get(ctx->main_task_control)
== (THREAD_WAIT_CLASS_OBJECT | THREAD_WAIT_STATE_INTEND_TO_BLOCK)
) {
CORE_semaphore_Control *sem;
ctx->done = true;
sc = rtems_semaphore_release(ctx->semaphore_id);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
rtems_test_assert(
_Thread_Wait_flags_get(ctx->main_task_control)
== (THREAD_WAIT_CLASS_OBJECT | THREAD_WAIT_STATE_READY_AGAIN)
);
sem = &ctx->semaphore_control->Core_control.Semaphore;
rtems_test_assert(sem->count == 0);
} else {
sc = rtems_semaphore_release(ctx->semaphore_id);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
}
}
static void any_satisfy_before_timeout(rtems_id timer, void *arg)
{
rtems_status_code sc;
test_context *ctx = arg;
Thread_Control *thread = ctx->thread;
Thread_Wait_flags flags = _Thread_Wait_flags_get(thread);
if (blocks_for_event(flags)) {
ctx->hit = interrupts_blocking_op(flags);
rtems_test_assert(
*(rtems_event_set *) thread->Wait.return_argument == DEADBEEF
);
rtems_test_assert(thread->Wait.return_code == RTEMS_SUCCESSFUL);
sc = rtems_event_send(thread->Object.id, GREEN);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
rtems_test_assert(
*(rtems_event_set *) thread->Wait.return_argument == GREEN
);
rtems_test_assert(thread->Wait.return_code == RTEMS_SUCCESSFUL);
sc = rtems_event_send(thread->Object.id, RED);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
rtems_test_assert(
*(rtems_event_set *) thread->Wait.return_argument == GREEN
);
rtems_test_assert(thread->Wait.return_code == RTEMS_SUCCESSFUL);
_Thread_Timeout(&thread->Timer.Watchdog);
rtems_test_assert(
*(rtems_event_set *) thread->Wait.return_argument == GREEN
);
rtems_test_assert(thread->Wait.return_code == RTEMS_SUCCESSFUL);
if (ctx->hit) {
rtems_test_assert(
_Thread_Wait_flags_get(thread)
== (THREAD_WAIT_CLASS_EVENT | THREAD_WAIT_STATE_READY_AGAIN)
);
}
rtems_test_assert(thread->Wait.count == EVENTS);
}
sc = rtems_timer_reset(timer);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
}
static bool interrupts_blocking_op(void)
{
Thread_Wait_flags flags = _Thread_Wait_flags_get( thread );
return
flags == ( THREAD_WAIT_CLASS_OBJECT | THREAD_WAIT_STATE_INTEND_TO_BLOCK );
}
static bool _Thread_queue_Make_ready_again( Thread_Control *the_thread )
{
bool success;
bool unblock;
/*
* We must update the wait flags under protection of the current thread lock,
* otherwise a _Thread_Timeout() running on another processor may interfere.
*/
success = _Thread_Wait_flags_try_change_release(
the_thread,
THREAD_QUEUE_INTEND_TO_BLOCK,
THREAD_QUEUE_READY_AGAIN
);
if ( success ) {
unblock = false;
} else {
_Assert( _Thread_Wait_flags_get( the_thread ) == THREAD_QUEUE_BLOCKED );
_Thread_Wait_flags_set( the_thread, THREAD_QUEUE_READY_AGAIN );
unblock = true;
}
_Thread_Wait_restore_default( the_thread );
return unblock;
}
void _Rate_monotonic_Timeout( Watchdog_Control *the_watchdog )
{
Rate_monotonic_Control *the_period;
Thread_Control *owner;
ISR_lock_Context lock_context;
Thread_Wait_flags wait_flags;
the_period = RTEMS_CONTAINER_OF( the_watchdog, Rate_monotonic_Control, Timer );
owner = the_period->owner;
_ISR_lock_ISR_disable( &lock_context );
_Rate_monotonic_Acquire_critical( the_period, &lock_context );
wait_flags = _Thread_Wait_flags_get( owner );
if (
( wait_flags & THREAD_WAIT_CLASS_PERIOD ) != 0
&& owner->Wait.return_argument == the_period
) {
bool unblock;
bool success;
owner->Wait.return_argument = NULL;
success = _Thread_Wait_flags_try_change_release(
owner,
RATE_MONOTONIC_INTEND_TO_BLOCK,
RATE_MONOTONIC_READY_AGAIN
);
if ( success ) {
unblock = false;
} else {
_Assert( _Thread_Wait_flags_get( owner ) == RATE_MONOTONIC_BLOCKED );
_Thread_Wait_flags_set( owner, RATE_MONOTONIC_READY_AGAIN );
unblock = true;
}
_Rate_monotonic_Restart( the_period, owner, &lock_context );
if ( unblock ) {
_Thread_Unblock( owner );
}
} else {
_Rate_monotonic_Renew_deadline( the_period, &lock_context );
}
}
bool _Thread_queue_Do_extract_locked(
Thread_queue_Queue *queue,
const Thread_queue_Operations *operations,
Thread_Control *the_thread
#if defined(RTEMS_MULTIPROCESSING)
,
const Thread_queue_Context *queue_context
#endif
)
{
bool success;
bool unblock;
#if defined(RTEMS_MULTIPROCESSING)
if ( !_Objects_Is_local_id( the_thread->Object.id ) ) {
Thread_Proxy_control *the_proxy;
Thread_queue_MP_callout mp_callout;
the_proxy = (Thread_Proxy_control *) the_thread;
mp_callout = queue_context->mp_callout;
_Assert( mp_callout != NULL );
the_proxy->thread_queue_callout = queue_context->mp_callout;
}
#endif
( *operations->extract )( queue, the_thread );
/*
* We must update the wait flags under protection of the current thread lock,
* otherwise a _Thread_Timeout() running on another processor may interfere.
*/
success = _Thread_Wait_flags_try_change_release(
the_thread,
THREAD_QUEUE_INTEND_TO_BLOCK,
THREAD_QUEUE_READY_AGAIN
);
if ( success ) {
unblock = false;
} else {
_Assert( _Thread_Wait_flags_get( the_thread ) == THREAD_QUEUE_BLOCKED );
_Thread_Wait_flags_set( the_thread, THREAD_QUEUE_READY_AGAIN );
unblock = true;
}
_Thread_Wait_restore_default( the_thread );
return unblock;
}
static rtems_status_code _Rate_monotonic_Block_while_active(
Rate_monotonic_Control *the_period,
rtems_interval length,
Thread_Control *executing,
ISR_lock_Context *lock_context
)
{
Per_CPU_Control *cpu_self;
bool success;
/*
* Update statistics from the concluding period.
*/
_Rate_monotonic_Update_statistics( the_period );
/*
* This tells the _Rate_monotonic_Timeout that this task is
* in the process of blocking on the period and that we
* may be changing the length of the next period.
*/
the_period->next_length = length;
executing->Wait.return_argument = the_period;
_Thread_Wait_flags_set( executing, RATE_MONOTONIC_INTEND_TO_BLOCK );
cpu_self = _Thread_Dispatch_disable_critical( lock_context );
_Rate_monotonic_Release( the_period, lock_context );
_Thread_Set_state( executing, STATES_WAITING_FOR_PERIOD );
success = _Thread_Wait_flags_try_change_acquire(
executing,
RATE_MONOTONIC_INTEND_TO_BLOCK,
RATE_MONOTONIC_BLOCKED
);
if ( !success ) {
_Assert(
_Thread_Wait_flags_get( executing ) == RATE_MONOTONIC_READY_AGAIN
);
_Thread_Unblock( executing );
}
_Thread_Dispatch_enable( cpu_self );
return RTEMS_SUCCESSFUL;
}
static bool is_case_hit( void )
{
return _Thread_Wait_flags_get( main_thread)
== ( THREAD_WAIT_CLASS_EVENT | THREAD_WAIT_STATE_INTEND_TO_BLOCK );
}
static bool is_interrupt_timeout(void)
{
Thread_Wait_flags flags = _Thread_Wait_flags_get( thread );
return flags == ( THREAD_WAIT_CLASS_OBJECT | THREAD_WAIT_STATE_READY_AGAIN );
}
static void _POSIX_signals_Action_handler(
Thread_Control *executing,
Thread_Action *action,
ISR_lock_Context *lock_context
)
{
POSIX_API_Control *api;
int signo;
uint32_t hold_errno;
(void) action;
_Thread_State_release( executing, lock_context );
api = executing->API_Extensions[ THREAD_API_POSIX ];
/*
* We need to ensure that if the signal handler executes a call
* which overwrites the unblocking status, we restore it.
*/
hold_errno = executing->Wait.return_code;
/*
* api may be NULL in case of a thread close in progress
*/
if ( !api )
return;
/*
* In case the executing thread is blocked or about to block on something
* that uses the thread wait information, then this is a kernel bug.
*/
_Assert(
( _Thread_Wait_flags_get( executing )
& ( THREAD_WAIT_STATE_BLOCKED | THREAD_WAIT_STATE_INTEND_TO_BLOCK ) ) == 0
);
/*
* If we invoke any user code, there is the possibility that
* a new signal has been posted that we should process so we
* restart the loop if a signal handler was invoked.
*
* The first thing done is to check there are any signals to be
* processed at all. No point in doing this loop otherwise.
*/
while (1) {
Thread_queue_Context queue_context;
_Thread_queue_Context_initialize( &queue_context );
_POSIX_signals_Acquire( &queue_context );
if ( !(api->signals_unblocked &
(api->signals_pending | _POSIX_signals_Pending)) ) {
_POSIX_signals_Release( &queue_context );
break;
}
_POSIX_signals_Release( &queue_context );
for ( signo = SIGRTMIN ; signo <= SIGRTMAX ; signo++ ) {
_POSIX_signals_Check_signal( api, signo, false );
_POSIX_signals_Check_signal( api, signo, true );
}
/* Unfortunately - nothing like __SIGFIRSTNOTRT in newlib signal .h */
for ( signo = SIGHUP ; signo <= __SIGLASTNOTRT ; signo++ ) {
_POSIX_signals_Check_signal( api, signo, false );
_POSIX_signals_Check_signal( api, signo, true );
}
}
executing->Wait.return_code = hold_errno;
}