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/**
* @file
*
* @brief Acquires the specified API mutex.
*
* @ingroup ScoreAPIMutex
*/
/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/apimutex.h>
#include <rtems/score/coremuteximpl.h>
#include <rtems/score/threadimpl.h>
void _API_Mutex_Lock( API_Mutex_Control *the_mutex )
{
Thread_Life_state previous_thread_life_state;
Thread_queue_Context queue_context;
previous_thread_life_state =
_Thread_Set_life_protection( THREAD_LIFE_PROTECTED );
_Thread_queue_Context_initialize( &queue_context );
_ISR_lock_ISR_disable( &queue_context.Lock_context.Lock_context );
_Thread_queue_Context_set_no_timeout( &queue_context );
_CORE_recursive_mutex_Seize(
&the_mutex->Mutex,
CORE_MUTEX_TQ_PRIORITY_INHERIT_OPERATIONS,
_Thread_Executing,
true,
_CORE_recursive_mutex_Seize_nested,
&queue_context
);
if ( the_mutex->Mutex.nest_level == 0 ) {
the_mutex->previous_thread_life_state = previous_thread_life_state;
}
}
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