forked from Imagelibrary/rtems
9e15e9bfba
* sp04/tswitch.c, sp07/task1.c, sp07/task2.c, sp09/screen07.c, sp11/task1.c, sp11/task2.c, sp12/pridrv.c, sp12/pritask.c, sp13/task1.c, sp14/asr.c, sp14/task1.c, sp19/first.c, sp19/fptask.c, sp19/inttest.h, sp19/task1.c, sp20/task1.c, sp25/task1.c, sp26/task1.c, sp28/init.c, sp29/init.c, sp31/task1.c, sp32/init.c, sp33/init.c, sp34/changepri.c, sp36/strict_order_mut.c, sp37/init.c, sp43/init.c, sp44/init.c, sp48/init.c, sp54/init.c, sp59/init.c, sp65/init.c, sp68/init.c, spchain/init.c, spclockget/init.c, spfatal03/testcase.h, spfatal07/testcase.h, spfatal_support/init.c: Do not line length exceed 80 columns.
134 lines
3.1 KiB
C
134 lines
3.1 KiB
C
/*
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* Original version submitted as part of PR1212
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*
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* This example shows a possible blocking of timeslicing if task mode is
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* changed to timeslicing in the middle of its executing.
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*
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* $Id$
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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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#include <rtems.h>
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#include <stdio.h>
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#include <stdlib.h>
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rtems_task Init(rtems_task_argument ignored);
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rtems_task TaskAB_entry(rtems_task_argument me);
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/*** Task priorities ***/
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#define TASK_A_PRIORITY 10
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#define TASK_B_PRIORITY 10
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/*** Task names ***/
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#define TASK_A_NAME 1
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#define TASK_B_NAME 2
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/*** Task atributes ***/
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#define TASK_A_INITMODE RTEMS_DEFAULT_MODES
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#define TASK_B_INITMODE RTEMS_DEFAULT_MODES
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/*** Task generic parameters ***/
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#define TASK_A_STACKSIZE RTEMS_MINIMUM_STACK_SIZE
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#define TASK_A_MODEATTR RTEMS_DEFAULT_ATTRIBUTES
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#define TASK_B_STACKSIZE RTEMS_MINIMUM_STACK_SIZE
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#define TASK_B_MODEATTR RTEMS_DEFAULT_ATTRIBUTES
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volatile uint32_t turn;
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rtems_id TaskA_id, TaskB_id;
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/* TASK A/B */
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rtems_task TaskAB_entry(rtems_task_argument me)
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{
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static rtems_mode previous_mode_set;
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rtems_status_code status;
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uint32_t iterations = 0;
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status = rtems_task_mode(
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RTEMS_PREEMPT | RTEMS_TIMESLICE,
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RTEMS_PREEMPT_MASK | RTEMS_TIMESLICE_MASK,
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&previous_mode_set
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);
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directive_failed(status, "Unable to change task mode.");
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while(1) {
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if (turn == me) {
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printf(
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"Task #%" PRIdrtems_task_argument "'s turn. Now setting turn to %"
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PRIdrtems_task_argument "\n",
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me,
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1 - me
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);
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turn = 1 - me;
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if ( ++iterations == 10 ) {
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puts( "*** END OF SP44 TEST ***" );
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exit( 0 );
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}
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}
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}
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}
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rtems_task Init(rtems_task_argument ignored)
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{
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static rtems_status_code status;
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puts( "\n\n*** SP44 TEST ***" );
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/* Create Task A */
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status = rtems_task_create(
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TASK_A_NAME,
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TASK_A_PRIORITY,
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TASK_A_STACKSIZE,
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TASK_A_INITMODE,
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TASK_A_MODEATTR,
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&TaskA_id
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);
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directive_failed(status,"rtems_task_create");
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/* Start Task A */
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status = rtems_task_start(TaskA_id, TaskAB_entry, 0);
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directive_failed(status,"rtems_task_start");
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/* Create Task B */
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status = rtems_task_create(
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TASK_B_NAME,
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TASK_B_PRIORITY,
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TASK_B_STACKSIZE,
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TASK_B_INITMODE,
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TASK_B_MODEATTR,
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&TaskB_id
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);
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directive_failed( status, "rtems_task_create" );
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/* Start Task B */
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status = rtems_task_start(TaskB_id, TaskAB_entry, 1);
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directive_failed( status, "rtems_task_start" );
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/* Suspend itself */
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status = rtems_task_suspend(RTEMS_SELF);
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directive_failed( status, "rtems_task_suspend" );
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/* This task is not suposed to be executed anymore */
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printf("\nNOT SUPOSED TO RETURN HERE...\n");
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rtems_test_exit(1);
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}
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/* configuration information */
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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_MICROSECONDS_PER_TICK 1000
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#define CONFIGURE_TICKS_PER_TIMESLICE 10
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#define CONFIGURE_MAXIMUM_TASKS 3
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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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