source: rtems/testsuites/libtests/ttest02/init.c @ cc3fd8fc

/* SPDX-License-Identifier: BSD-2-Clause */

/*
 * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <rtems/test.h>
#include <rtems/test-info.h>

#include <rtems.h>

static void
prepare(void *arg)
{
        Atomic_Uint *state;

        state = arg;
        _Atomic_Store_uint(state, 0, ATOMIC_ORDER_RELAXED);
}

static void
action(void *arg)
{
        Atomic_Uint *state;
        unsigned int expected;
        bool success_0;
        bool success_1;

        state = arg;

        /*
         * This code models a critical section in the operating system.  The
         * interrupt should happen between the two atomic operations.
         */
        expected = 0;
        success_0 = _Atomic_Compare_exchange_uint(state, &expected, 1,
            ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED);
        expected = 1;
        success_1 = _Atomic_Compare_exchange_uint(state, &expected, 2,
            ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED);
        T_quiet_true(success_0);
        T_quiet_true(success_1);

        T_interrupt_test_busy_wait_for_interrupt();
}

static T_interrupt_test_state
interrupt(void *arg)
{
        Atomic_Uint *state;
        unsigned int expected;

        if (T_interrupt_test_get_state() != T_INTERRUPT_TEST_ACTION) {
                return T_INTERRUPT_TEST_CONTINUE;
        }

        state = arg;
        expected = 1;

        if (_Atomic_Compare_exchange_uint(state, &expected, expected,
            ATOMIC_ORDER_RELAXED, ATOMIC_ORDER_RELAXED)) {
                return T_INTERRUPT_TEST_DONE;
        } else if (expected == 0) {
                return T_INTERRUPT_TEST_EARLY;
        } else {
                T_quiet_eq_uint(expected, 2);
                return T_INTERRUPT_TEST_LATE;
        }
}

static const T_interrupt_test_config done_config = {
        .prepare = prepare,
        .action = action,
        .interrupt = interrupt,
        .max_iteration_count = 10000
};

T_TEST_CASE(TestInterruptDone)
{
        int i;

        for (i = 0; i < 10; ++i) {
                Atomic_Uint action_state;
                T_interrupt_test_state state;

                state = T_interrupt_test(&done_config, &action_state);
                T_eq_int(state, T_INTERRUPT_TEST_DONE);
        }
}

static const T_interrupt_test_config timeout_config = {
        .interrupt = interrupt,
        .action = action
};

T_TEST_CASE(TestInterruptTimeout)
{
        Atomic_Uint action_state;
        T_interrupt_test_state state;

        T_plan(1);
        state = T_interrupt_test(&timeout_config, &action_state);
        T_step_eq_int(0, state, T_INTERRUPT_TEST_TIMEOUT);
}

static void
fatal(void *arg)
{
        (void)arg;
        T_step(0);
        T_stop();
}

static const T_interrupt_test_config fatal_config = {
        .prepare = fatal,
        .action = action,
        .interrupt = interrupt,
        .max_iteration_count = 10000
};

T_TEST_CASE(TestInterruptFatal)
{
        Atomic_Uint action_state;

        T_plan(1);
        T_interrupt_test(&fatal_config, &action_state);
        T_unreachable();
}

const char rtems_test_name[] = "TTEST 2";

static void
Init(rtems_task_argument argument)
{
        rtems_test_run(argument, TEST_STATE);
}

#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER

#define CONFIGURE_MICROSECONDS_PER_TICK 1000

#define CONFIGURE_MAXIMUM_TASKS 1

#define CONFIGURE_RTEMS_INIT_TASKS_TABLE

#define CONFIGURE_INIT

#include <rtems/confdefs.h>