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score: Optimize thread queue enqueue

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Optimize the enqueue to empty thread queue case.
This commit is contained in:
Sebastian Huber
2016-08-10 08:37:16 +02:00
parent e41308eab8
commit 1f210ac139
1 changed files with 32 additions and 17 deletions
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49
cpukit/score/src/threadqops.c
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@@ -45,27 +45,30 @@ static void _Thread_queue_Do_nothing_extract(
static Thread_queue_Heads *_Thread_queue_Queue_enqueue(
Thread_queue_Queue *queue,
Thread_Control *the_thread,
void ( *initialize )( Thread_queue_Heads * ),
void ( *initialize )( Thread_queue_Heads *, Thread_Control * ),
void ( *enqueue )( Thread_queue_Heads *, Thread_Control * )
)
{
Thread_queue_Heads *heads = queue->heads;
Thread_queue_Heads *spare_heads = the_thread->Wait.spare_heads;
Thread_queue_Heads *heads;
Thread_queue_Heads *spare_heads;
heads = queue->heads;
spare_heads = the_thread->Wait.spare_heads;
the_thread->Wait.spare_heads = NULL;
if ( heads == NULL ) {
_Assert( spare_heads != NULL );
_Assert( _Chain_Is_empty( &spare_heads->Free_chain ) );
heads = spare_heads;
queue->heads = heads;
( *initialize )( heads );
_Chain_Prepend_unprotected( &heads->Free_chain, &spare_heads->Free_node );
( *initialize )( heads, the_thread );
} else {
_Chain_Prepend_unprotected( &heads->Free_chain, &spare_heads->Free_node );
( *enqueue )( heads, the_thread );
}
_Chain_Prepend_unprotected( &heads->Free_chain, &spare_heads->Free_node );
( *enqueue )( heads, the_thread );
return heads;
}
@@ -92,10 +95,12 @@ static void _Thread_queue_Queue_extract(
}
static void _Thread_queue_FIFO_do_initialize(
Thread_queue_Heads *heads
Thread_queue_Heads *heads,
Thread_Control *the_thread
)
{
_Chain_Initialize_empty( &heads->Heads.Fifo );
_Chain_Initialize_node( &the_thread->Wait.Node.Chain );
_Chain_Initialize_one( &heads->Heads.Fifo, &the_thread->Wait.Node.Chain );
}
static void _Thread_queue_FIFO_do_enqueue(
@@ -235,14 +240,23 @@ static void _Thread_queue_Priority_priority_change(
}
static void _Thread_queue_Priority_do_initialize(
Thread_queue_Heads *heads
Thread_queue_Heads *heads,
Thread_Control *the_thread
)
{
Thread_queue_Priority_queue *priority_queue;
priority_queue = _Thread_queue_Priority_queue( heads, the_thread );
#if defined(RTEMS_SMP)
_Chain_Initialize_empty( &heads->Heads.Fifo );
#else
_RBTree_Initialize_empty( &heads->Heads.Priority.Queue );
_Chain_Initialize_one( &heads->Heads.Fifo, &priority_queue->Node );
#endif
_RBTree_Initialize_node( &the_thread->Wait.Node.RBTree );
_RBTree_Initialize_one(
&priority_queue->Queue,
&the_thread->Wait.Node.RBTree
);
}
static void _Thread_queue_Priority_do_enqueue(
@@ -250,9 +264,10 @@ static void _Thread_queue_Priority_do_enqueue(
Thread_Control *the_thread
)
{
Thread_queue_Priority_queue *priority_queue =
_Thread_queue_Priority_queue( heads, the_thread );
Priority_Control current_priority;
Thread_queue_Priority_queue *priority_queue;
Priority_Control current_priority;
priority_queue = _Thread_queue_Priority_queue( heads, the_thread );
#if defined(RTEMS_SMP)
if ( _RBTree_Is_empty( &priority_queue->Queue ) ) {