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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-02-03 08:57:18 +0100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-02-03 10:17:39 +0100 |
commit | bbfbfc847e07ab98f47104a70e72033468eaedcc (patch) | |
tree | cb7b2c701485a694000d0d53c74904972cf3b25d /cpukit/score/src/threaddispatch.c | |
parent | score: Improve scheduler helping protocol (diff) | |
download | rtems-bbfbfc847e07ab98f47104a70e72033468eaedcc.tar.bz2 |
score: Move _Thread_Scheduler_ask_for_help()
Move _Thread_Scheduler_ask_for_help(), rename it to
_Thread_Ask_for_help() and make it static.
Diffstat (limited to 'cpukit/score/src/threaddispatch.c')
-rw-r--r-- | cpukit/score/src/threaddispatch.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/cpukit/score/src/threaddispatch.c b/cpukit/score/src/threaddispatch.c index 5fe0843e49..a68e3c1c6e 100644 --- a/cpukit/score/src/threaddispatch.c +++ b/cpukit/score/src/threaddispatch.c @@ -41,6 +41,39 @@ Thread_Control *_Thread_Allocated_fp; CHAIN_DEFINE_EMPTY( _User_extensions_Switches_list ); #if defined(RTEMS_SMP) +static void _Thread_Ask_for_help( Thread_Control *the_thread ) +{ + Chain_Node *node; + const Chain_Node *tail; + + node = _Chain_First( &the_thread->Scheduler.Scheduler_nodes ); + tail = _Chain_Immutable_tail( &the_thread->Scheduler.Scheduler_nodes ); + + do { + Scheduler_Node *scheduler_node; + const Scheduler_Control *scheduler; + ISR_lock_Context lock_context; + bool success; + + scheduler_node = SCHEDULER_NODE_OF_THREAD_SCHEDULER_NODE( node ); + scheduler = _Scheduler_Node_get_scheduler( scheduler_node ); + + _Scheduler_Acquire_critical( scheduler, &lock_context ); + success = ( *scheduler->Operations.ask_for_help )( + scheduler, + the_thread, + scheduler_node + ); + _Scheduler_Release_critical( scheduler, &lock_context ); + + if ( success ) { + break; + } + + node = _Chain_Next( node ); + } while ( node != tail ); +} + static bool _Thread_Can_ask_for_help( const Thread_Control *executing ) { return executing->Scheduler.helping_nodes > 0 @@ -64,7 +97,7 @@ static void _Thread_Preemption_intervention( Per_CPU_Control *cpu_self ) _Per_CPU_Release( cpu_self ); _Thread_State_acquire( the_thread, &lock_context ); - _Thread_Scheduler_ask_for_help( the_thread ); + _Thread_Ask_for_help( the_thread ); _Thread_State_release( the_thread, &lock_context ); _Per_CPU_Acquire( cpu_self ); } |