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score: Fix _Thread_Priority_change()

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The POSIX sporadic server may temporarily remove the real priority of a
thread.  Check that the priority node is active before the change is
propagated.

Update #5168.
This commit is contained in:
Sebastian Huber
2024-11-26 04:30:39 +01:00
committed by Gedare Bloom
parent 5d1041d897
commit a85a2de5c7
2 changed files with 21 additions and 0 deletions
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13
cpukit/include/rtems/score/thread.h
View File

@@ -96,9 +96,22 @@ extern "C" {
*/ */
#if defined(RTEMS_DEBUG) #if defined(RTEMS_DEBUG)
/**
* @brief This define enables the thread resource count support.
*/
#define RTEMS_SCORE_THREAD_ENABLE_RESOURCE_COUNT #define RTEMS_SCORE_THREAD_ENABLE_RESOURCE_COUNT
#endif #endif
#if defined(RTEMS_POSIX_API)
/**
* @brief This define enables support for an inactive real thread priority.
*
* For example, the POSIX sporadic server may temporarily remove the real
* priority of a thread while it is in low priority mode.
*/
#define RTEMS_SCORE_THREAD_REAL_PRIORITY_MAY_BE_INACTIVE
#endif
/** /**
* @brief Type of the numeric argument of a thread entry function with at * @brief Type of the numeric argument of a thread entry function with at
* least one numeric argument. * least one numeric argument.

8
cpukit/include/rtems/score/threadimpl.h
View File

@@ -800,6 +800,14 @@ static inline void _Thread_Priority_change(
) )
{ {
_Priority_Node_set_priority( priority_node, new_priority ); _Priority_Node_set_priority( priority_node, new_priority );
#if defined(RTEMS_SCORE_THREAD_REAL_PRIORITY_MAY_BE_INACTIVE)
if ( !_Priority_Node_is_active( priority_node ) ) {
/* The priority change is picked up once the node is added */
return;
}
#endif
_Thread_Priority_changed( _Thread_Priority_changed(
the_thread, the_thread,
priority_node, priority_node,