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rtems: Add signal post switch extension on the fly

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This commit is contained in:
Sebastian Huber
2012-12-05 18:07:05 +01:00
parent 04b5d174a4
commit ba31631317
2 changed files with 44 additions and 50 deletions
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cpukit/rtems/src/signalcatch.c
+44
View File
@@ -25,8 +25,50 @@
#include <rtems/rtems/modes.h>
#include <rtems/rtems/signal.h>
#include <rtems/score/thread.h>
#include <rtems/score/apiext.h>
#include <rtems/rtems/tasks.h>
static void _RTEMS_signal_Post_switch_hook( Thread_Control *executing )
{
ISR_Level level;
RTEMS_API_Control *api;
ASR_Information *asr;
rtems_signal_set signal_set;
Modes_Control prev_mode;
api = executing->API_Extensions[ THREAD_API_RTEMS ];
if ( !api )
return;
/*
* Signal Processing
*/
asr = &api->Signal;
_ISR_Disable( level );
signal_set = asr->signals_posted;
asr->signals_posted = 0;
_ISR_Enable( level );
if ( !signal_set ) /* similar to _ASR_Are_signals_pending( asr ) */
return;
asr->nest_level += 1;
rtems_task_mode( asr->mode_set, RTEMS_ALL_MODE_MASKS, &prev_mode );
(*asr->handler)( signal_set );
asr->nest_level -= 1;
rtems_task_mode( prev_mode, RTEMS_ALL_MODE_MASKS, &prev_mode );
}
static API_extensions_Post_switch_control _RTEMS_signal_Post_switch = {
.hook = _RTEMS_signal_Post_switch_hook
};
rtems_status_code rtems_signal_catch(
rtems_asr_entry asr_handler,
rtems_mode mode_set
@@ -44,6 +86,8 @@ rtems_status_code rtems_signal_catch(
_Thread_Disable_dispatch(); /* cannot reschedule while */
/* the thread is inconsistent */
_API_extensions_Add_post_switch( &_RTEMS_signal_Post_switch );
if ( !_ASR_Is_null_handler( asr_handler ) ) {
asr->mode_set = mode_set;
asr->handler = asr_handler;
cpukit/rtems/src/tasks.c
-50
View File
@@ -167,51 +167,6 @@ static void _RTEMS_tasks_Switch_extension(
}
}
/*
* _RTEMS_tasks_Post_switch_extension
*
* This extension routine is invoked at each context switch.
*/
static void _RTEMS_tasks_Post_switch_extension(
Thread_Control *executing
)
{
ISR_Level level;
RTEMS_API_Control *api;
ASR_Information *asr;
rtems_signal_set signal_set;
Modes_Control prev_mode;
api = executing->API_Extensions[ THREAD_API_RTEMS ];
if ( !api )
return;
/*
* Signal Processing
*/
asr = &api->Signal;
_ISR_Disable( level );
signal_set = asr->signals_posted;
asr->signals_posted = 0;
_ISR_Enable( level );
if ( !signal_set ) /* similar to _ASR_Are_signals_pending( asr ) */
return;
asr->nest_level += 1;
rtems_task_mode( asr->mode_set, RTEMS_ALL_MODE_MASKS, &prev_mode );
(*asr->handler)( signal_set );
asr->nest_level -= 1;
rtems_task_mode( prev_mode, RTEMS_ALL_MODE_MASKS, &prev_mode );
}
API_extensions_Control _RTEMS_tasks_API_extensions = {
#if defined(FUNCTIONALITY_NOT_CURRENTLY_USED_BY_ANY_API)
.predriver_hook = NULL,
@@ -219,10 +174,6 @@ API_extensions_Control _RTEMS_tasks_API_extensions = {
.postdriver_hook = _RTEMS_tasks_Initialize_user_tasks
};
API_extensions_Post_switch_control _RTEMS_tasks_API_extensions_post_switch = {
.hook = _RTEMS_tasks_Post_switch_extension
};
User_extensions_Control _RTEMS_tasks_User_extensions = {
{ NULL, NULL },
{ { NULL, NULL }, _RTEMS_tasks_Switch_extension },
@@ -262,7 +213,6 @@ void _RTEMS_tasks_Manager_initialization(void)
_User_extensions_Add_API_set( &_RTEMS_tasks_User_extensions );
_API_extensions_Add( &_RTEMS_tasks_API_extensions );
_API_extensions_Add_post_switch( &_RTEMS_tasks_API_extensions_post_switch );
/*
* Register the MP Process Packet routine.