source: test/perf4.c

/*
 *  TOPPERS Software
 *      Toyohashi Open Platform for Embedded Real-Time Systems
 * 
 *  Copyright (C) 2006-2009 by Embedded and Real-Time Systems Laboratory
 *              Graduate School of Information Science, Nagoya Univ., JAPAN
 * 
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/*
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 */

#include <kernel.h>
#include <t_syslog.h>
#include <test_lib.h>
#include <histogram.h>
#include "kernel_cfg.h"
#include "perf4.h"

/*
 *  ·×¬²ó¿ô€ÈŒÂ¹Ô»þŽÖʬÉÛ€òµ­Ï¿€¹€ëºÇÂç»þŽÖ
 */
#define NO_MEASURE      10000U                  /* ·×¬²ó¿ô */
#define MAX_TIME        1000U                   /* ŒÂ¹Ô»þŽÖʬÉÛ€òµ­Ï¿€¹€ëºÇÂç»þŽÖ */

/*
 *  ŒÂ¹Ô»þŽÖʬÉÛ€òµ­Ï¿€¹€ë¥á¥â¥êÎΰè
 */
static uint_t   histarea1[MAX_TIME + 1];
static uint_t   histarea2[MAX_TIME + 1];
static uint_t   histarea3[MAX_TIME + 1];

/*
 *  ·×¬¥¿¥¹¥¯1¡Ê¹âÍ¥ÀèÅÙ¡Ë
 */
void task1(intptr_t exinf)
{
        end_measure(2);
        ext_tsk();
}

/*
 *  ·×¬¥¿¥¹¥¯2€È¥á¥€¥ó¥¿¥¹¥¯€Î¶ŠÍ­ÊÑ¿ô
 */
volatile uint_t         task2_count;

/*
 *  ·×¬¥¿¥¹¥¯2¡Ê¹âÍ¥ÀèÅÙ¡Ë
 */
void task2(intptr_t exinf)
{
        end_measure(3);
        task2_count++;
        ext_tsk();
}

/*
 *  ·×¬¥¿¥¹¥¯3¡ÊÄãÍ¥ÀèÅÙ¡Ë
 */
void task3(intptr_t exinf)
{
        ext_tsk();
}

/*
 *  ·×¬¥¿¥¹¥¯4¡ÊºÇÄãÍ¥ÀèÅÙ¡Ë
 */
void task4(intptr_t exinf)
{
        while (true) {
                wup_tsk(MAIN_TASK);
        }
}

/*
 *  ŒþŽü¥Ï¥ó¥É¥é
 */
void cyclic_handler(intptr_t exinf)
{
        begin_measure(3);
        iact_tsk(TASK2);
}

/*
 *  ¥á¥€¥ó¥¿¥¹¥¯¡ÊÃæÍ¥ÀèÅÙ¡Ë
 */
void main_task(intptr_t exinf)
{
        uint_t  i;

        syslog_0(LOG_NOTICE, "Performance evaluation program (4)");
        init_hist(1, MAX_TIME, histarea1);
        init_hist(2, MAX_TIME, histarea2);
        init_hist(3, MAX_TIME, histarea3);
        syslog_flush();

        /*
         *  ¥¿¥¹¥¯ÀÚŽ¹€š€òµ¯€³€µ€Ê€€act_tsk€ÎœèÍý»þŽÖ€Î¬Äê
         */
        for (i = 0; i < NO_MEASURE; i++) {
                begin_measure(1);
                act_tsk(TASK3);
                end_measure(1);
                slp_tsk();
        }

        /*
         *  ¥¿¥¹¥¯ÀÚŽ¹€š€òµ¯€³€¹act_tsk€ÎœèÍý»þŽÖ€Î¬Äê
         */
        for (i = 0; i < NO_MEASURE; i++) {
                begin_measure(2);
                act_tsk(TASK1);
        }

        /*
         *  ¥¿¥¹¥¯ÀÚŽ¹€š€òµ¯€³€¹iact_tsk€ÎœèÍý»þŽÖ€Î¬Äê¡Ê¬Äê²ó¿ô€Ï10ʬ€Î1¡Ë
         */
        task2_count = 0;
        sta_cyc(CYC1);
        while (task2_count < NO_MEASURE / 10) ;
        stp_cyc(CYC1);

        syslog_0(LOG_NOTICE, "Execution times of act_tsk without task switch");
        print_hist(1);
        syslog_0(LOG_NOTICE, "Execution times of act_tsk with task switch");
        print_hist(2);
        syslog_0(LOG_NOTICE, "Execution times of iact_tsk with task switch");
        print_hist(3);
        test_finish();
}