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/**
* @file rtems/score/threadmp.h
*
* @brief Multiprocessing Portion of the Thread Package
*
* This include file contains the specification for all routines
* and data specific to the multiprocessing portion of the thread package.
*/
/*
* 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.com/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 ScoreThreadMP Thread Handler Multiprocessing Support
*
* @ingroup Score
*
* 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.
*/
void _Thread_MP_Handler_initialization (
uint32_t maximum_proxies
);
/**
* @brief Allocate 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.
*/
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 chain of proxy control blocks.
*/
Thread_Control *_Thread_MP_Find_proxy (
Objects_Id the_id
);
/**
* @brief Manage the active set MP proxies.
*
* The following chain is used to manage the active set proxies.
*/
SCORE_EXTERN Chain_Control _Thread_MP_Active_proxies;
/**
* @brief Manage the inactive set of MP proxies.
*
* The following chain is used to manage the inactive set of proxies.
*/
SCORE_EXTERN Chain_Control _Thread_MP_Inactive_proxies;
/**
* 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)
/**
* This routine frees a proxy control block to the
* inactive chain of free proxy control blocks.
*/
RTEMS_INLINE_ROUTINE void _Thread_MP_Free_proxy (
Thread_Control *the_thread
)
{
Thread_Proxy_control *the_proxy;
the_proxy = (Thread_Proxy_control *) the_thread;
_Chain_Extract( &the_proxy->Active );
_Chain_Append( &_Thread_MP_Inactive_proxies, &the_thread->Object.Node );
}
/**@}*/
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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