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/**
* @file
*
* This include file contains the static inline implementation of the private
* inlined routines for POSIX condition variables.
*/
/*
* COPYRIGHT (c) 1989-2013.
* 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.
*/
#ifndef _RTEMS_POSIX_CONDIMPL_H
#define _RTEMS_POSIX_CONDIMPL_H
#include <rtems/posix/cond.h>
#include <rtems/score/objectimpl.h>
#include <rtems/score/threadqimpl.h>
#include <errno.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* Constant to indicate condition variable does not currently have
* a mutex assigned to it.
*/
#define POSIX_CONDITION_VARIABLES_NO_MUTEX 0
#define POSIX_CONDITION_VARIABLES_TQ_OPERATIONS &_Thread_queue_Operations_FIFO
/**
* The following defines the information control block used to manage
* this class of objects.
*/
extern Objects_Information _POSIX_Condition_variables_Information;
/**
* The default condition variable attributes structure.
*/
extern const pthread_condattr_t _POSIX_Condition_variables_Default_attributes;
RTEMS_INLINE_ROUTINE void _POSIX_Condition_variables_Initialize(
POSIX_Condition_variables_Control *the_cond,
pthread_condattr_t *the_attr
)
{
_Thread_queue_Initialize( &the_cond->Wait_queue );
the_cond->mutex = POSIX_CONDITION_VARIABLES_NO_MUTEX;
the_cond->clock = the_attr->clock;
}
RTEMS_INLINE_ROUTINE void _POSIX_Condition_variables_Destroy(
POSIX_Condition_variables_Control *the_cond
)
{
_Thread_queue_Destroy( &the_cond->Wait_queue );
}
RTEMS_INLINE_ROUTINE void _POSIX_Condition_variables_Acquire_critical(
POSIX_Condition_variables_Control *the_cond,
Thread_queue_Context *queue_context
)
{
_Thread_queue_Acquire_critical(
&the_cond->Wait_queue,
&queue_context->Lock_context
);
}
RTEMS_INLINE_ROUTINE void _POSIX_Condition_variables_Release(
POSIX_Condition_variables_Control *the_cond,
Thread_queue_Context *queue_context
)
{
_Thread_queue_Release( &the_cond->Wait_queue, &queue_context->Lock_context );
}
/**
* @brief POSIX Condition Variable Allocate
*
* This function allocates a condition variable control block from
* the inactive chain of free condition variable control blocks.
*/
RTEMS_INLINE_ROUTINE POSIX_Condition_variables_Control *
_POSIX_Condition_variables_Allocate( void )
{
return (POSIX_Condition_variables_Control *)
_Objects_Allocate( &_POSIX_Condition_variables_Information );
}
/**
* @brief POSIX Condition Variable Free
*
* This routine frees a condition variable control block to the
* inactive chain of free condition variable control blocks.
*/
RTEMS_INLINE_ROUTINE void _POSIX_Condition_variables_Free (
POSIX_Condition_variables_Control *the_condition_variable
)
{
_Objects_Free(
&_POSIX_Condition_variables_Information,
&the_condition_variable->Object
);
}
POSIX_Condition_variables_Control *_POSIX_Condition_variables_Get(
pthread_cond_t *cond,
Thread_queue_Context *queue_context
);
/**
* @brief Implements wake up version of the "signal" operation.
*
* A support routine which implements guts of the broadcast and single task
* wake up version of the "signal" operation.
*/
int _POSIX_Condition_variables_Signal_support(
pthread_cond_t *cond,
bool is_broadcast
);
/**
* @brief POSIX condition variables wait support.
*
* A support routine which implements guts of the blocking, non-blocking, and
* timed wait version of condition variable wait routines.
*/
int _POSIX_Condition_variables_Wait_support(
pthread_cond_t *cond,
pthread_mutex_t *mutex,
const struct timespec *abstime
);
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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