Colony » Colony Scout

/*

 * Copyright (c) 2005-2007, Kohsuke Ohtani

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the author nor the names of any co-contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

/*

 * bench.c - benchmark program for running many threads

 */

/*

 * Note: The system must have enough memory to run this program.

 * At least, 512M bytes of RAM is required to create 100000 threads

 * with x86-pc.

 */

#include <sys/prex.h>

#include <stdio.h>

/*

 * Number of threads

 */

#define NR_THREADS 10000

static thread_t *thread;

void

null_thread(void)

{

        for (;;) ;

}

int

main(int argc, char *argv[])

{

        struct timerinfo info;

        task_t task;

        char stack[16];

        u_long start, end;

        int i, pri, error;

        printf("Benchmark to create/terminate %d threads\n", NR_THREADS);

        sys_info(INFO_TIMER, &info);

        if (info.hz == 0)

                panic("can not get timer tick rate");

        thread_getpri(thread_self(), &pri);

        thread_setpri(thread_self(), pri - 1);

        task = task_self();

        error = vm_allocate(task, (void **)&thread,

                            sizeof(thread_t) * NR_THREADS, 1);

        if (error)

                panic("vm_allocate is failed");

        sys_time(&start);

        /*

         * Create threads

         */

        for (i = 0; i < NR_THREADS; i++) {

                if (thread_create(task, &thread[i]) != 0)

                        panic("thread_create is failed");

                if (thread_load(thread[i], null_thread, &stack) != 0)

                        panic("thread_load is failed");

                if (thread_resume(thread[i]) != 0)

                        panic("thread_resume is failed");

        }

        /*

         * Teminate threads

         */

        for (i = 0; i < NR_THREADS; i++)

                thread_terminate(thread[i]);

        sys_time(&end);

        vm_free(task, thread);

        printf("Complete. The score is %d msec (%d ticks).\n",

               (int)((end - start) * 1000 / info.hz),

               (int)(end - start));

        return 0;

}