source: kernel/sys_manage.c

/*
 *  TOPPERS/ASP Kernel
 *      Toyohashi Open Platform for Embedded Real-Time Systems/
 *      Advanced Standard Profile Kernel
 * 
 *  Copyright (C) 2000-2003 by Embedded and Real-Time Systems Laboratory
 *                              Toyohashi Univ. of Technology, JAPAN
 *  Copyright (C) 2005-2010 by Embedded and Real-Time Systems Laboratory
 *              Graduate School of Information Science, Nagoya Univ., JAPAN
 * 
 *  Ÿåµ­Ãøºîž¢ŒÔ€Ï¡€°Ê²Œ€Î(1)¡Á(4)€ÎŸò·ï€òËþ€¿€¹Ÿì¹ç€ËžÂ€ê¡€ËÜ¥œ¥Õ¥È¥Š¥§
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 *  @(#) $Id$
 */

/*
 *              ¥·¥¹¥Æ¥àŸõÂÖŽÉÍýµ¡Çœ
 */

#include "kernel_impl.h"
#include "check.h"
#include "task.h"

/*
 *  ¥È¥ì¡Œ¥¹¥í¥°¥Þ¥¯¥í€Î¥Ç¥Õ¥©¥ë¥ÈÄêµÁ
 */
#ifndef LOG_ROT_RDQ_ENTER
#define LOG_ROT_RDQ_ENTER(tskpri)
#endif /* LOG_ROT_RDQ_ENTER */

#ifndef LOG_ROT_RDQ_LEAVE
#define LOG_ROT_RDQ_LEAVE(ercd)
#endif /* LOG_ROT_RDQ_LEAVE */

#ifndef LOG_IROT_RDQ_ENTER
#define LOG_IROT_RDQ_ENTER(tskpri)
#endif /* LOG_IROT_RDQ_ENTER */

#ifndef LOG_IROT_RDQ_LEAVE
#define LOG_IROT_RDQ_LEAVE(ercd)
#endif /* LOG_IROT_RDQ_LEAVE */

#ifndef LOG_GET_TID_ENTER
#define LOG_GET_TID_ENTER(p_tskid)
#endif /* LOG_GET_TID_ENTER */

#ifndef LOG_GET_TID_LEAVE
#define LOG_GET_TID_LEAVE(ercd, tskid)
#endif /* LOG_GET_TID_LEAVE */

#ifndef LOG_IGET_TID_ENTER
#define LOG_IGET_TID_ENTER(p_tskid)
#endif /* LOG_IGET_TID_ENTER */

#ifndef LOG_IGET_TID_LEAVE
#define LOG_IGET_TID_LEAVE(ercd, tskid)
#endif /* LOG_IGET_TID_LEAVE */

#ifndef LOG_LOC_CPU_ENTER
#define LOG_LOC_CPU_ENTER()
#endif /* LOG_LOC_CPU_ENTER */

#ifndef LOG_LOC_CPU_LEAVE
#define LOG_LOC_CPU_LEAVE(ercd)
#endif /* LOG_LOC_CPU_LEAVE */

#ifndef LOG_ILOC_CPU_ENTER
#define LOG_ILOC_CPU_ENTER()
#endif /* LOG_ILOC_CPU_ENTER */

#ifndef LOG_ILOC_CPU_LEAVE
#define LOG_ILOC_CPU_LEAVE(ercd)
#endif /* LOG_ILOC_CPU_LEAVE */

#ifndef LOG_UNL_CPU_ENTER
#define LOG_UNL_CPU_ENTER()
#endif /* LOG_UNL_CPU_ENTER */

#ifndef LOG_UNL_CPU_LEAVE
#define LOG_UNL_CPU_LEAVE(ercd)
#endif /* LOG_UNL_CPU_LEAVE */

#ifndef LOG_IUNL_CPU_ENTER
#define LOG_IUNL_CPU_ENTER()
#endif /* LOG_IUNL_CPU_ENTER */

#ifndef LOG_IUNL_CPU_LEAVE
#define LOG_IUNL_CPU_LEAVE(ercd)
#endif /* LOG_IUNL_CPU_LEAVE */

#ifndef LOG_DIS_DSP_ENTER
#define LOG_DIS_DSP_ENTER()
#endif /* LOG_DIS_DSP_ENTER */

#ifndef LOG_DIS_DSP_LEAVE
#define LOG_DIS_DSP_LEAVE(ercd)
#endif /* LOG_DIS_DSP_LEAVE */

#ifndef LOG_ENA_DSP_ENTER
#define LOG_ENA_DSP_ENTER()
#endif /* LOG_ENA_DSP_ENTER */

#ifndef LOG_ENA_DSP_LEAVE
#define LOG_ENA_DSP_LEAVE(ercd)
#endif /* LOG_ENA_DSP_LEAVE */

#ifndef LOG_SNS_CTX_ENTER
#define LOG_SNS_CTX_ENTER()
#endif /* LOG_SNS_CTX_ENTER */

#ifndef LOG_SNS_CTX_LEAVE
#define LOG_SNS_CTX_LEAVE(state)
#endif /* LOG_SNS_CTX_LEAVE */

#ifndef LOG_SNS_LOC_ENTER
#define LOG_SNS_LOC_ENTER()
#endif /* LOG_SNS_LOC_ENTER */

#ifndef LOG_SNS_LOC_LEAVE
#define LOG_SNS_LOC_LEAVE(state)
#endif /* LOG_SNS_LOC_LEAVE */

#ifndef LOG_SNS_DSP_ENTER
#define LOG_SNS_DSP_ENTER()
#endif /* LOG_SNS_DSP_ENTER */

#ifndef LOG_SNS_DSP_LEAVE
#define LOG_SNS_DSP_LEAVE(state)
#endif /* LOG_SNS_DSP_LEAVE */

#ifndef LOG_SNS_DPN_ENTER
#define LOG_SNS_DPN_ENTER()
#endif /* LOG_SNS_DPN_ENTER */

#ifndef LOG_SNS_DPN_LEAVE
#define LOG_SNS_DPN_LEAVE(state)
#endif /* LOG_SNS_DPN_LEAVE */

#ifndef LOG_SNS_KER_ENTER
#define LOG_SNS_KER_ENTER()
#endif /* LOG_SNS_KER_ENTER */

#ifndef LOG_SNS_KER_LEAVE
#define LOG_SNS_KER_LEAVE(state)
#endif /* LOG_SNS_KER_LEAVE */

/*
 *  ¥¿¥¹¥¯€ÎÍ¥Àèœç°Ì€Î²óÅŸ
 */
#ifdef TOPPERS_rot_rdq

ER
rot_rdq(PRI tskpri)
{
        uint_t  pri;
        ER              ercd;

        LOG_ROT_RDQ_ENTER(tskpri);
        CHECK_TSKCTX_UNL();
        CHECK_TPRI_SELF(tskpri);

        t_lock_cpu();
        pri = (tskpri == TPRI_SELF) ? p_runtsk->priority : INT_PRIORITY(tskpri);
        if (rotate_ready_queue(pri)) {
                dispatch();
        }
        ercd = E_OK;
        t_unlock_cpu();

  error_exit:
        LOG_ROT_RDQ_LEAVE(ercd);
        return(ercd);
}

#endif /* TOPPERS_rot_rdq */

/*
 *  ¥¿¥¹¥¯€ÎÍ¥Àèœç°Ì€Î²óÅŸ¡ÊÈ󥿥¹¥¯¥³¥ó¥Æ¥­¥¹¥ÈÍÑ¡Ë
 */
#ifdef TOPPERS_irot_rdq

ER
irot_rdq(PRI tskpri)
{
        ER              ercd;

        LOG_IROT_RDQ_ENTER(tskpri);
        CHECK_INTCTX_UNL();
        CHECK_TPRI(tskpri);

        i_lock_cpu();
        if (rotate_ready_queue(INT_PRIORITY(tskpri))) {
                reqflg = true;
        }
        ercd = E_OK;
        i_unlock_cpu();

  error_exit:
        LOG_IROT_RDQ_LEAVE(ercd);
        return(ercd);
}

#endif /* TOPPERS_irot_rdq */

/*
 *  ŒÂ¹ÔŸõÂրΥ¿¥¹¥¯ID€Î»²ŸÈ
 */
#ifdef TOPPERS_get_tid

ER
get_tid(ID *p_tskid)
{
        ER              ercd;

        LOG_GET_TID_ENTER(p_tskid);
        CHECK_TSKCTX_UNL();

        t_lock_cpu();
        *p_tskid = TSKID(p_runtsk);
        ercd = E_OK;
        t_unlock_cpu();

  error_exit:
        LOG_GET_TID_LEAVE(ercd, *p_tskid);
        return(ercd);
}

#endif /* TOPPERS_get_tid */

/*
 *  ŒÂ¹ÔŸõÂրΥ¿¥¹¥¯ID€Î»²ŸÈ¡ÊÈ󥿥¹¥¯¥³¥ó¥Æ¥­¥¹¥ÈÍÑ¡Ë
 */
#ifdef TOPPERS_iget_tid

ER
iget_tid(ID *p_tskid)
{
        ER              ercd;

        LOG_IGET_TID_ENTER(p_tskid);
        CHECK_INTCTX_UNL();

        i_lock_cpu();
        *p_tskid = (p_runtsk == NULL) ? TSK_NONE : TSKID(p_runtsk);
        ercd = E_OK;
        i_unlock_cpu();

  error_exit:
        LOG_IGET_TID_LEAVE(ercd, *p_tskid);
        return(ercd);
}

#endif /* TOPPERS_iget_tid */

/*
 *  CPU¥í¥Ã¥¯ŸõÂր؀ΰܹÔ
 */
#ifdef TOPPERS_loc_cpu

ER
loc_cpu(void)
{
        ER              ercd;

        LOG_LOC_CPU_ENTER();
        CHECK_TSKCTX();

        if (!t_sense_lock()) {
                t_lock_cpu();
        }
        ercd = E_OK;

  error_exit:
        LOG_LOC_CPU_LEAVE(ercd);
        return(ercd);
}

#endif /* TOPPERS_loc_cpu */

/*
 *  CPU¥í¥Ã¥¯ŸõÂր؀ΰܹԡÊÈ󥿥¹¥¯¥³¥ó¥Æ¥­¥¹¥ÈÍÑ¡Ë
 */
#ifdef TOPPERS_iloc_cpu

ER
iloc_cpu(void)
{
        ER              ercd;

        LOG_ILOC_CPU_ENTER();
        CHECK_INTCTX();

        if (!i_sense_lock()) {
                i_lock_cpu();
        }
        ercd = E_OK;

  error_exit:
        LOG_ILOC_CPU_LEAVE(ercd);
        return(ercd);
}

#endif /* TOPPERS_iloc_cpu */

/*
 *  CPU¥í¥Ã¥¯ŸõÂրβòœü
 *
 *  CPU¥í¥Ã¥¯Ãæ€Ï¡€¥Ç¥£¥¹¥Ñ¥Ã¥Á€¬É¬Í׀Ȁʀ륵¡Œ¥Ó¥¹¥³¡Œ¥ë€òžÆ€ÓœÐ€¹€³
 *  €È€Ï€Ç€­€Ê€€€¿€á¡€CPU¥í¥Ã¥¯ŸõÂրβòœü»þ€Ë¥Ç¥£¥¹¥Ñ¥Ã¥Á¥ã€òµ¯Æ°€¹€ë
 *  ɬÍ׀πʀ€¡¥
 */
#ifdef TOPPERS_unl_cpu

ER
unl_cpu(void)
{
        ER              ercd;

        LOG_UNL_CPU_ENTER();
        CHECK_TSKCTX();

        if (t_sense_lock()) {
                t_unlock_cpu();
        }
        ercd = E_OK;

  error_exit:
        LOG_UNL_CPU_LEAVE(ercd);
        return(ercd);
}

#endif /* TOPPERS_unl_cpu */

/*
 *  CPU¥í¥Ã¥¯ŸõÂրβòœü¡ÊÈ󥿥¹¥¯¥³¥ó¥Æ¥­¥¹¥ÈÍÑ¡Ë
 *
 *  CPU¥í¥Ã¥¯Ãæ€Ï¡€¥Ç¥£¥¹¥Ñ¥Ã¥Á€¬É¬Í׀Ȁʀ륵¡Œ¥Ó¥¹¥³¡Œ¥ë€òžÆ€ÓœÐ€¹€³
 *  €È€Ï€Ç€­€Ê€€€¿€á¡€CPU¥í¥Ã¥¯ŸõÂրβòœü»þ€Ë¥Ç¥£¥¹¥Ñ¥Ã¥Á¥ã€Îµ¯Æ°€òÍ×
 *  µá€¹€ëɬÍ׀πʀ€¡¥
 */
#ifdef TOPPERS_iunl_cpu

ER
iunl_cpu(void)
{
        ER              ercd;

        LOG_IUNL_CPU_ENTER();
        CHECK_INTCTX();

        if (i_sense_lock()) {
                i_unlock_cpu();
        }
        ercd = E_OK;

  error_exit:
        LOG_IUNL_CPU_LEAVE(ercd);
        return(ercd);
}

#endif /* TOPPERS_iunl_cpu */

/*
 *  ¥Ç¥£¥¹¥Ñ¥Ã¥Á€Î¶Ø»ß
 */
#ifdef TOPPERS_dis_dsp

ER
dis_dsp(void)
{
        ER              ercd;

        LOG_DIS_DSP_ENTER();
        CHECK_TSKCTX_UNL();

        t_lock_cpu();
        disdsp = true;
        dspflg = false;
        ercd = E_OK;
        t_unlock_cpu();

  error_exit:
        LOG_DIS_DSP_LEAVE(ercd);
        return(ercd);
}

#endif /* TOPPERS_dis_dsp */

/*
 *  ¥Ç¥£¥¹¥Ñ¥Ã¥Á€Îµö²Ä
 */
#ifdef TOPPERS_ena_dsp

ER
ena_dsp(void)
{
        ER              ercd;

        LOG_ENA_DSP_ENTER();
        CHECK_TSKCTX_UNL();

        t_lock_cpu();
        disdsp = false;
        if (ipmflg) {
                dspflg = true;
                if (p_runtsk != p_schedtsk) {
                        dispatch();
                }
        }
        ercd = E_OK;
        t_unlock_cpu();

  error_exit:
        LOG_ENA_DSP_LEAVE(ercd);
        return(ercd);
}

#endif /* TOPPERS_ena_dsp */

/*
 *  ¥³¥ó¥Æ¥­¥¹¥È€Î»²ŸÈ
 */
#ifdef TOPPERS_sns_ctx

bool_t
sns_ctx(void)
{
        bool_t  state;

        LOG_SNS_CTX_ENTER();
        state = sense_context() ? true : false;
        LOG_SNS_CTX_LEAVE(state);
        return(state);
}

#endif /* TOPPERS_sns_ctx */

/*
 *  CPU¥í¥Ã¥¯ŸõÂրλ²ŸÈ
 */
#ifdef TOPPERS_sns_loc

bool_t
sns_loc(void)
{
        bool_t  state;

        LOG_SNS_LOC_ENTER();
        state = x_sense_lock() ? true : false;
        LOG_SNS_LOC_LEAVE(state);
        return(state);
}

#endif /* TOPPERS_sns_loc */

/*
 *  ¥Ç¥£¥¹¥Ñ¥Ã¥Á¶Ø»ßŸõÂրλ²ŸÈ
 */
#ifdef TOPPERS_sns_dsp

bool_t
sns_dsp(void)
{
        bool_t  state;

        LOG_SNS_DSP_ENTER();
        state = disdsp;
        LOG_SNS_DSP_LEAVE(state);
        return(state);
}

#endif /* TOPPERS_sns_dsp */

/*
 *  ¥Ç¥£¥¹¥Ñ¥Ã¥ÁÊÝαŸõÂրλ²ŸÈ
 */
#ifdef TOPPERS_sns_dpn

bool_t
sns_dpn(void)
{
        bool_t  state;

        LOG_SNS_DPN_ENTER();
        state = (sense_context() || t_sense_lock() || !dspflg) ? true : false;
        LOG_SNS_DPN_LEAVE(state);
        return(state);
}

#endif /* TOPPERS_sns_dpn */

/*
 *  ¥«¡Œ¥Í¥ëÈóÆ°ºîŸõÂրλ²ŸÈ
 */
#ifdef TOPPERS_sns_ker

bool_t
sns_ker(void)
{
        bool_t  state;

        LOG_SNS_KER_ENTER();
        state = kerflg ? false : true;
        LOG_SNS_KER_LEAVE(state);
        return(state);
}

#endif /* TOPPERS_sns_ker */