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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2014, 2016 embedded brains GmbH. 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.
*
* 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 "tmacros.h"
const char rtems_test_name[] = "SPSEM 3";
typedef struct {
rtems_id low;
rtems_id mid;
rtems_id high;
rtems_id inversion;
rtems_id sem_a;
rtems_id sem_b;
} test_context;
static test_context test_instance;
static void assert_prio(rtems_id task_id, rtems_task_priority expected_prio)
{
rtems_status_code sc;
rtems_task_priority prio;
sc = rtems_task_set_priority(task_id, RTEMS_CURRENT_PRIORITY, &prio);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
rtems_test_assert(prio == expected_prio);
}
static void create_task(rtems_id *id, rtems_task_priority prio)
{
rtems_status_code sc;
sc = rtems_task_create(
rtems_build_name('T', 'A', 'S', 'K'),
prio,
RTEMS_MINIMUM_STACK_SIZE,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
id
);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
}
static void start_task(rtems_id id, rtems_task_entry entry)
{
rtems_status_code sc;
sc = rtems_task_start(id, entry, 0);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
}
static void create_sema(rtems_id *id)
{
rtems_status_code sc;
sc = rtems_semaphore_create(
rtems_build_name('S', 'E', 'M', 'A'),
1,
RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
0,
id
);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
}
static void obtain_sema(rtems_id id)
{
rtems_status_code sc;
sc = rtems_semaphore_obtain(id, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
}
static void inversion_task(rtems_task_argument arg)
{
rtems_test_assert(0);
}
static void mid_task(rtems_task_argument arg)
{
test_context *ctx = &test_instance;
obtain_sema(ctx->sem_b);
obtain_sema(ctx->sem_a);
}
static void high_task(rtems_task_argument arg)
{
test_context *ctx = &test_instance;
start_task(ctx->inversion, inversion_task);
obtain_sema(ctx->sem_b);
}
static void Init(rtems_task_argument arg)
{
test_context *ctx = &test_instance;
TEST_BEGIN();
ctx->low = rtems_task_self();
create_task(&ctx->mid, 3);
create_task(&ctx->high, 1);
create_task(&ctx->inversion, 2);
create_sema(&ctx->sem_a);
create_sema(&ctx->sem_b);
obtain_sema(ctx->sem_a);
start_task(ctx->mid, mid_task);
start_task(ctx->high, high_task);
/*
* Here we see that the priority of the high priority task blocked on
* semaphore B propagated to the low priority task owning semaphore A
* on which the owner of semaphore B depends.
*/
assert_prio(ctx->low, 1);
assert_prio(ctx->mid, 1);
assert_prio(ctx->high, 1);
assert_prio(ctx->inversion, 2);
TEST_END();
rtems_test_exit(0);
}
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
#define CONFIGURE_MAXIMUM_TASKS 4
#define CONFIGURE_MAXIMUM_SEMAPHORES 2
#define CONFIGURE_INIT_TASK_PRIORITY 4
#define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
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