rtems_status_code rtems_semaphore_obtain(
rtems_id id,
rtems_option option_set,
rtems_interval timeout
)
{
register Semaphore_Control *the_semaphore;
Objects_Locations location;
ISR_Level level;
Thread_Control *executing;
the_semaphore = _Semaphore_Get_interrupt_disable( id, &location, &level );
switch ( location ) {
case OBJECTS_LOCAL:
executing = _Thread_Executing;
if ( !_Attributes_Is_counting_semaphore(the_semaphore->attribute_set) ) {
_CORE_mutex_Seize(
&the_semaphore->Core_control.mutex,
executing,
id,
((_Options_Is_no_wait( option_set )) ? false : true),
timeout,
level
);
_Objects_Put_for_get_isr_disable( &the_semaphore->Object );
return _Semaphore_Translate_core_mutex_return_code(
executing->Wait.return_code );
}
/* must be a counting semaphore */
_CORE_semaphore_Seize_isr_disable(
&the_semaphore->Core_control.semaphore,
executing,
id,
((_Options_Is_no_wait( option_set )) ? false : true),
timeout,
level
);
_Objects_Put_for_get_isr_disable( &the_semaphore->Object );
return _Semaphore_Translate_core_semaphore_return_code(
executing->Wait.return_code );
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
return _Semaphore_MP_Send_request_packet(
SEMAPHORE_MP_OBTAIN_REQUEST,
id,
option_set,
timeout
);
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
rtems_status_code rtems_semaphore_obtain(
Objects_Id id,
unsigned32 option_set,
rtems_interval timeout
)
{
register Semaphore_Control *the_semaphore;
Objects_Locations location;
boolean wait;
the_semaphore = _Semaphore_Get( id, &location );
switch ( location ) {
case OBJECTS_REMOTE:
#if defined(RTEMS_MULTIPROCESSING)
return _Semaphore_MP_Send_request_packet(
SEMAPHORE_MP_OBTAIN_REQUEST,
id,
option_set,
timeout
);
#endif
case OBJECTS_ERROR:
return RTEMS_INVALID_ID;
case OBJECTS_LOCAL:
if ( _Options_Is_no_wait( option_set ) )
wait = FALSE;
else
wait = TRUE;
if ( !_Attributes_Is_counting_semaphore(the_semaphore->attribute_set) ) {
_CORE_mutex_Seize(
&the_semaphore->Core_control.mutex,
id,
wait,
timeout
);
_Thread_Enable_dispatch();
return _Semaphore_Translate_core_mutex_return_code(
_Thread_Executing->Wait.return_code );
} else {
_CORE_semaphore_Seize(
&the_semaphore->Core_control.semaphore,
id,
wait,
timeout
);
_Thread_Enable_dispatch();
return _Semaphore_Translate_core_semaphore_return_code(
_Thread_Executing->Wait.return_code );
}
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
rtems_status_code rtems_semaphore_obtain(
rtems_id id,
uint32_t option_set,
rtems_interval timeout
)
{
register Semaphore_Control *the_semaphore;
Objects_Locations location;
ISR_Level level;
the_semaphore = _Semaphore_Get_interrupt_disable( id, &location, &level );
switch ( location ) {
case OBJECTS_REMOTE:
#if defined(RTEMS_MULTIPROCESSING)
return _Semaphore_MP_Send_request_packet(
SEMAPHORE_MP_OBTAIN_REQUEST,
id,
option_set,
timeout
);
#endif
case OBJECTS_ERROR:
return RTEMS_INVALID_ID;
case OBJECTS_LOCAL:
if ( !_Attributes_Is_counting_semaphore(the_semaphore->attribute_set) ) {
_CORE_mutex_Seize(
&the_semaphore->Core_control.mutex,
id,
((_Options_Is_no_wait( option_set )) ? FALSE : TRUE),
timeout,
level
);
return _Semaphore_Translate_core_mutex_return_code(
_Thread_Executing->Wait.return_code );
}
/* must be a counting semaphore */
_CORE_semaphore_Seize_isr_disable(
&the_semaphore->Core_control.semaphore,
id,
((_Options_Is_no_wait( option_set )) ? FALSE : TRUE),
timeout,
&level
);
return _Semaphore_Translate_core_semaphore_return_code(
_Thread_Executing->Wait.return_code );
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
rtems_status_code rtems_semaphore_obtain(
rtems_id id,
rtems_option option_set,
rtems_interval timeout
)
{
Semaphore_Control *the_semaphore;
Objects_Locations location;
ISR_Level level;
Thread_Control *executing;
rtems_attribute attribute_set;
bool wait;
the_semaphore = _Semaphore_Get_interrupt_disable( id, &location, &level );
switch ( location ) {
case OBJECTS_LOCAL:
executing = _Thread_Executing;
attribute_set = the_semaphore->attribute_set;
wait = !_Options_Is_no_wait( option_set );
#if defined(RTEMS_SMP)
if ( _Attributes_Is_multiprocessor_resource_sharing( attribute_set ) ) {
MRSP_Status mrsp_status;
_ISR_Enable( level );
mrsp_status = _MRSP_Obtain(
&the_semaphore->Core_control.mrsp,
executing,
wait,
timeout
);
_Objects_Put_for_get_isr_disable( &the_semaphore->Object );
return _Semaphore_Translate_MRSP_status_code( mrsp_status );
} else
#endif
if ( !_Attributes_Is_counting_semaphore( attribute_set ) ) {
_CORE_mutex_Seize(
&the_semaphore->Core_control.mutex,
executing,
id,
wait,
timeout,
level
);
_Objects_Put_for_get_isr_disable( &the_semaphore->Object );
return _Semaphore_Translate_core_mutex_return_code(
executing->Wait.return_code );
}
/* must be a counting semaphore */
_CORE_semaphore_Seize_isr_disable(
&the_semaphore->Core_control.semaphore,
executing,
id,
wait,
timeout,
level
);
_Objects_Put_for_get_isr_disable( &the_semaphore->Object );
return _Semaphore_Translate_core_semaphore_return_code(
executing->Wait.return_code );
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
return _Semaphore_MP_Send_request_packet(
SEMAPHORE_MP_OBTAIN_REQUEST,
id,
option_set,
timeout
);
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
rtems_status_code rtems_semaphore_release(
rtems_id id
)
{
Semaphore_Control *the_semaphore;
Objects_Locations location;
CORE_mutex_Status mutex_status;
CORE_semaphore_Status semaphore_status;
rtems_attribute attribute_set;
ISR_lock_Context lock_context;
the_semaphore = _Semaphore_Get_interrupt_disable(
id,
&location,
&lock_context
);
switch ( location ) {
case OBJECTS_LOCAL:
attribute_set = the_semaphore->attribute_set;
#if defined(RTEMS_SMP)
if ( _Attributes_Is_multiprocessor_resource_sharing( attribute_set ) ) {
MRSP_Status mrsp_status;
mrsp_status = _MRSP_Surrender(
&the_semaphore->Core_control.mrsp,
_Thread_Executing,
&lock_context
);
return _Semaphore_Translate_MRSP_status_code( mrsp_status );
} else
#endif
if ( !_Attributes_Is_counting_semaphore( attribute_set ) ) {
mutex_status = _CORE_mutex_Surrender(
&the_semaphore->Core_control.mutex,
_Semaphore_Core_mutex_mp_support,
id,
&lock_context
);
return _Semaphore_Translate_core_mutex_return_code( mutex_status );
} else {
semaphore_status = _CORE_semaphore_Surrender(
&the_semaphore->Core_control.semaphore,
_Semaphore_Core_mutex_mp_support,
id,
&lock_context
);
return
_Semaphore_Translate_core_semaphore_return_code( semaphore_status );
}
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
return _Semaphore_MP_Send_request_packet(
SEMAPHORE_MP_RELEASE_REQUEST,
id,
0, /* Not used */
MPCI_DEFAULT_TIMEOUT
);
#endif
case OBJECTS_ERROR:
break;
}
return RTEMS_INVALID_ID;
}
