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/**
* @file
*
* @ingroup RTEMSScoreThreadMP
*
* @brief This header file provides the interfaces of the
* @ref RTEMSScoreThreadMP.
*/
/*
* COPYRIGHT (c) 1989-2009.
* 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_SCORE_THREADMP_H
#define _RTEMS_SCORE_THREADMP_H
#ifndef _RTEMS_SCORE_THREADIMPL_H
# error "Never use <rtems/score/threadmp.h> directly; include <rtems/score/threadimpl.h> instead."
#endif
#include <rtems/score/mpciimpl.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup RTEMSScoreThreadMP Thread Handler Multiprocessing (MP) Support
*
* @ingroup RTEMSScoreThread
*
* @brief This group contains the implementation to support the Thread Handler
* in multiprocessing (MP) configurations.
*
* This handler encapsulates functionality which is related to managing
* threads in a multiprocessor system configuration. This handler must
* manage proxies which represent remote threads blocking on local
* operations.
*
* @{
*/
/**
* @brief Initialize MP thread handler.
*
* This routine initializes the multiprocessing portion of the Thread Handler.
*
* @param maximum_proxies The maximum number of proxies for the MP thread handler.
*/
void _Thread_MP_Handler_initialization (
uint32_t maximum_proxies
);
/**
* @brief Allocates a MP proxy control block from
* the inactive chain of free proxy control blocks.
*
* This allocates a proxy control block from
* the inactive chain of free proxy control blocks.
*
* @note This function returns a thread control pointer
* because proxies are substitutes for remote threads.
*
* * @param the_state The state for the allocated MP proxy control block.
*/
Thread_Control *_Thread_MP_Allocate_proxy (
States_Control the_state
);
/**
* @brief Removes the MP proxy control block for the specified
* id from the active chain of proxy control blocks.
*
* This function removes the proxy control block for the specified
* id from the active red-black tree of proxy control blocks.
*
* @param the_id The id of the proxy control block to remove.
*
* @return The removed proxy control block.
*/
Thread_Control *_Thread_MP_Find_proxy (
Objects_Id the_id
);
/**
* This function returns true if the thread in question is the
* multiprocessing receive thread.
*
* @note This is a macro to avoid needing a prototype for
* _MPCI_Receive_server_tcb until it is used.
*/
#define _Thread_MP_Is_receive(_the_thread) \
((_the_thread) == _MPCI_Receive_server_tcb)
/**
* @brief Trees a proxy control block to the inactive chain of free proxy
* control blocks.
*/
void _Thread_MP_Free_proxy( Thread_Control *the_thread );
/**
* @brief Checks if the thread MP with this object id is remote.
*
* @param id The object id.
*
* @retval true The object id is valid and the thread MP with this object id
* is remote.
* @retval false The object if is not valid or the thread MP with this object
* id is not remote.
*/
RTEMS_INLINE_ROUTINE bool _Thread_MP_Is_remote( Objects_Id id )
{
Objects_Information *information;
information = _Thread_Get_objects_information_by_id( id );
if ( information == NULL ) {
return false;
}
return _Objects_MP_Is_remote( id, information );
}
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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