Subversion Repositories openrisc_2011-10-31

/*

 *  Test for rtems_semaphore_flush

 *

 *  $Id: init.c,v 1.2 2001-09-27 12:02:36 chris Exp $

 */

#include <bsp.h>

rtems_task Init (rtems_task_argument argument);

#define CONFIGURE_RTEMS_INIT_TASKS_TABLE

#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER

#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER

#define CONFIGURE_MAXIMUM_TASKS               6

#define CONFIGURE_MICROSECONDS_PER_TICK       52429

#define CONFIGURE_INIT

#include <confdefs.h>

#include <rtems/error.h>

#include <stdio.h>

#define NTASK 4

rtems_id semaphore;

volatile int flags[NTASK];

rtems_task

subtask (rtems_task_argument arg)

{

  rtems_status_code sc;

  for (;;) {

    flags[arg]++;

    sc = rtems_semaphore_obtain (semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT);

    if (sc == RTEMS_SUCCESSFUL)

      puts ("Obtained semaphore -- and should not have done so!");

    else if (sc != RTEMS_UNSATISFIED)

      printf ("Can't get semaphore: %s\n", rtems_status_text (sc));

  }

}

void

starttask (int arg)

{

  rtems_id tid;

  rtems_status_code sc;

  rtems_task_priority priority;

  rtems_task_set_priority (RTEMS_SELF, RTEMS_CURRENT_PRIORITY, &priority);

  sc = rtems_task_create (rtems_build_name ('S', 'R', 'V', arg + 'A'),

    priority,

    RTEMS_MINIMUM_STACK_SIZE,

    RTEMS_PREEMPT|RTEMS_NO_TIMESLICE|RTEMS_NO_ASR|RTEMS_INTERRUPT_LEVEL(0),

    RTEMS_NO_FLOATING_POINT|RTEMS_LOCAL,

    &tid);

  if (sc != RTEMS_SUCCESSFUL) {

    printf ("Can't create task: %s\n", rtems_status_text (sc));

    rtems_task_suspend (RTEMS_SELF);

  }

  sc = rtems_task_start (tid, subtask, arg);

  if (sc != RTEMS_SUCCESSFUL) {

        printf ("Can't start task: %s\n", rtems_status_text (sc));

    rtems_task_suspend (RTEMS_SELF);

  }

}

rtems_task

Init (rtems_task_argument ignored)

{

  int pass, i;

  rtems_status_code sc;

  puts("**** Semaphore flush test ****");

  sc = rtems_semaphore_create (

    rtems_build_name ('S', 'E', 'M', 'F'),

    0,

    RTEMS_LOCAL|RTEMS_BINARY_SEMAPHORE|RTEMS_NO_INHERIT_PRIORITY|RTEMS_NO_PRIORITY_CEILING|RTEMS_FIFO,

    0,

    &semaphore);

  if (sc != RTEMS_SUCCESSFUL) {

    printf ("Can't flush semaphore: %s\n", rtems_status_text (sc));

    exit (1);

  }

  for (i = 0 ; i < NTASK ; i++)

    starttask (i);

  for (pass = 1 ; pass < 10 ; pass++) {

    rtems_task_wake_after (1);

    for (i = 0 ; i < NTASK ; i++) {

      if (flags[i] != pass)

        printf ("flags[%d] = %d -- expected %d\n", i, flags[i], pass);

    }

    sc = rtems_semaphore_flush (semaphore);

    if (sc != RTEMS_SUCCESSFUL) {

      printf ("Can't flush semaphore: %s\n", rtems_status_text (sc));

      exit (1);

    }

  }

  puts ("**** Semaphore flush test succeeded ****");

  exit (1);

}