source: mainline/kernel/test/atomic/atomic1.c@ 319e60e

/*
 * Copyright (C) 2006 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */

#include <test.h>
#include <print.h>
#include <atomic.h>
#include <debug.h>

#ifdef CONFIG_BENCH
#include <arch/cycle.h>
#endif

void test_atomic1(void)
{
#ifdef CONFIG_BENCH
        uint64_t t0 = get_cycle();
#endif
        atomic_t a;

        atomic_set(&a, 10);
        printf("Testing atomic_set() and atomic_get().\n");
        ASSERT(atomic_get(&a) == 10);
        printf("Testing atomic_postinc()\n");
        ASSERT(atomic_postinc(&a) == 10);
        ASSERT(atomic_get(&a) == 11);
        printf("Testing atomic_postdec()\n");
        ASSERT(atomic_postdec(&a) == 11);
        ASSERT(atomic_get(&a) == 10);
        printf("Testing atomic_preinc()\n");
        ASSERT(atomic_preinc(&a) == 11);
        ASSERT(atomic_get(&a) == 11);
        printf("Testing atomic_predec()\n");
        ASSERT(atomic_postdec(&a) == 11);
        ASSERT(atomic_get(&a) == 10);

        printf("Test passed.\n");
#ifdef CONFIG_BENCH
        uint64_t dt = get_cycle() - t0;
        printf("Time: %.*d cycles\n", sizeof(dt) * 2, dt);
#endif
        return;
}