forked from Imagelibrary/rtems
158 lines
3.4 KiB
C
158 lines
3.4 KiB
C
/*
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* Copyright (c) 2014 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "tmacros.h"
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const char rtems_test_name[] = "SPSEM 3";
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typedef struct {
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rtems_id low;
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rtems_id mid;
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rtems_id high;
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rtems_id inversion;
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rtems_id sem_a;
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rtems_id sem_b;
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} test_context;
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static test_context test_instance;
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static void assert_prio(rtems_id task_id, rtems_task_priority expected_prio)
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{
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rtems_status_code sc;
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rtems_task_priority prio;
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sc = rtems_task_set_priority(task_id, RTEMS_CURRENT_PRIORITY, &prio);
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rtems_test_assert(sc == RTEMS_SUCCESSFUL);
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rtems_test_assert(prio == expected_prio);
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}
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static void create_task(rtems_id *id, rtems_task_priority prio)
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{
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rtems_status_code sc;
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sc = rtems_task_create(
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rtems_build_name('T', 'A', 'S', 'K'),
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prio,
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RTEMS_MINIMUM_STACK_SIZE,
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RTEMS_DEFAULT_MODES,
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RTEMS_DEFAULT_ATTRIBUTES,
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id
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);
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rtems_test_assert(sc == RTEMS_SUCCESSFUL);
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}
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static void start_task(rtems_id id, rtems_task_entry entry)
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{
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rtems_status_code sc;
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sc = rtems_task_start(id, entry, 0);
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rtems_test_assert(sc == RTEMS_SUCCESSFUL);
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}
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static void create_sema(rtems_id *id)
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{
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rtems_status_code sc;
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sc = rtems_semaphore_create(
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rtems_build_name('S', 'E', 'M', 'A'),
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1,
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RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
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0,
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id
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);
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rtems_test_assert(sc == RTEMS_SUCCESSFUL);
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}
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static void obtain_sema(rtems_id id)
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{
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rtems_status_code sc;
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sc = rtems_semaphore_obtain(id, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
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rtems_test_assert(sc == RTEMS_SUCCESSFUL);
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}
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static void inversion_task(rtems_task_argument arg)
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{
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test_context *ctx = &test_instance;
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/*
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* Here we see that the priority of the high priority task blocked on
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* semaphore B doesn't propagate to the low priority task owning semaphore A
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* on which the owner of semaphore B depends.
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*/
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assert_prio(ctx->low, 3);
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assert_prio(ctx->mid, 1);
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assert_prio(ctx->high, 1);
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assert_prio(ctx->inversion, 2);
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TEST_END();
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rtems_test_exit(0);
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}
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static void mid_task(rtems_task_argument arg)
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{
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test_context *ctx = &test_instance;
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obtain_sema(ctx->sem_b);
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obtain_sema(ctx->sem_a);
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}
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static void high_task(rtems_task_argument arg)
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{
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test_context *ctx = &test_instance;
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start_task(ctx->inversion, inversion_task);
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obtain_sema(ctx->sem_b);
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}
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static void Init(rtems_task_argument arg)
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{
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test_context *ctx = &test_instance;
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TEST_BEGIN();
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ctx->low = rtems_task_self();
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create_task(&ctx->mid, 3);
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create_task(&ctx->high, 1);
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create_task(&ctx->inversion, 2);
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create_sema(&ctx->sem_a);
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create_sema(&ctx->sem_b);
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obtain_sema(ctx->sem_a);
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start_task(ctx->mid, mid_task);
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start_task(ctx->high, high_task);
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}
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#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
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#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
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#define CONFIGURE_MAXIMUM_TASKS 4
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#define CONFIGURE_MAXIMUM_SEMAPHORES 2
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#define CONFIGURE_INIT_TASK_PRIORITY 4
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#define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES
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#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
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#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
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#define CONFIGURE_INIT
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#include <rtems/confdefs.h>
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