init.c

RTEMS (Real-Time Executive for Multiprocessor Systems) is a free open source real-time operating sys

/* 
 *  COPYRIGHT (c) 1989-1999.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.com/license/LICENSE.
 *
 *  $Id: init.c,v 1.19.2.1 2003/09/04 18:46:26 joel Exp $
 */

#define CONFIGURE_INIT
#include "system.h"
#include <errno.h>

#define MUTEX_BAD_ID 0xfffffffe 

void Print_mutexattr(
  char                *msg,
  pthread_mutexattr_t *attr
)
{
  int status;
  int protocol;
  int prioceiling;
  int pshared;

  /* protocol */

  status = pthread_mutexattr_getprotocol( attr, &protocol );
  assert( !status );

  printf( "%smutex protocol is (%d) -- ", msg, protocol );
  switch ( protocol ) {
    case PTHREAD_PRIO_NONE:
      puts( "PTHREAD_PRIO_NONE" );
      break;
    case PTHREAD_PRIO_INHERIT:
      puts( "PTHREAD_PRIO_INHERIT" );
      break;
    case PTHREAD_PRIO_PROTECT:
      puts( "PTHREAD_PRIO_PROTECT" );
      break;
    default:
      puts( "UNKNOWN" );
      assert( 0 );
      break;
  }

  /* priority ceiling */

  status = pthread_mutexattr_getprioceiling( attr, &prioceiling );
  assert( !status );
  printf( "%smutex priority ceiling is %d\n", msg, prioceiling );

  /* process shared */

  status = pthread_mutexattr_getpshared( attr, &pshared );
  assert( !status );
  printf( "%smutex process shared is (%d) -- ", msg, pshared );
  switch ( pshared ) {
    case PTHREAD_PROCESS_PRIVATE:
      puts( "PTHREAD_PROCESS_PRIVATE" );
      break;
    case PTHREAD_PROCESS_SHARED:
      puts( "PTHREAD_PROCESS_SHARED" );
      break;
    default:
      puts( "UNKNOWN" );
      assert( 0 );
      break;
  }
}

void *POSIX_Init(
  void *argument
)
{
  int                  status;
  pthread_mutexattr_t  attr;
  pthread_mutexattr_t  destroyed_attr;
  struct timespec      times;
  struct sched_param   param;
  int                  pshared;
  int                  policy;
  int                  protocol;
  int                  ceiling;
  int                  old_ceiling;

  assert( MUTEX_BAD_ID != PTHREAD_MUTEX_INITIALIZER );
  Mutex_bad_id = MUTEX_BAD_ID; 

  puts( "\n\n*** POSIX TEST 5 ***" );

  /* set the time of day, and print our buffer in multiple ways */

  set_time( TM_FRIDAY, TM_MAY, 24, 96, 11, 5, 0 );

  /* get id of this thread */

  Init_id = pthread_self();
  printf( "Init's ID is 0x%08x\n", Init_id );
  
  /* tes pthread_mutex_attr_init */

  puts( "Init: pthread_mutexattr_init - EINVAL (NULL attr)" );
  status = pthread_mutexattr_init( NULL );
  assert( status == EINVAL );

  puts( "Init: pthread_mutexattr_init - SUCCESSFUL" );
  status = pthread_mutexattr_init( &attr );
  assert( !status );

  Print_mutexattr( "Init: ", &attr );

  /* create an "uninitialized" attribute structure */

  status = pthread_mutexattr_init( &destroyed_attr );
  assert( !status );

  puts( "Init: pthread_mutexattr_destroy - SUCCESSFUL" );
  status = pthread_mutexattr_destroy( &destroyed_attr );
  assert( !status );

  puts( "Init: pthread_mutexattr_destroy - EINVAL (NULL attr)" );
  status = pthread_mutexattr_destroy( NULL );
  assert( status == EINVAL );

  puts( "Init: pthread_mutexattr_destroy - EINVAL (not initialized)" );
  status = pthread_mutexattr_destroy( &destroyed_attr );
  assert( status == EINVAL );

  /* error cases for set and get pshared attribute */

  empty_line();

  puts( "Init: pthread_mutexattr_getpshared - EINVAL (NULL attr)" );
  status = pthread_mutexattr_getpshared( NULL, &pshared );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_getpshared - EINVAL (NULL pshared)" );
  status = pthread_mutexattr_getpshared( &attr, NULL );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_getpshared - EINVAL (not initialized)" );
  status = pthread_mutexattr_getpshared( &destroyed_attr, &pshared );
  assert( status == EINVAL );

  pshared = PTHREAD_PROCESS_PRIVATE;
  puts( "Init: pthread_mutexattr_setpshared - EINVAL (NULL attr)" );
  status = pthread_mutexattr_setpshared( NULL, pshared );
  assert( status == EINVAL );
 
  pshared = PTHREAD_PROCESS_PRIVATE;
  puts( "Init: pthread_mutexattr_setpshared - EINVAL (not initialized)" );
  status = pthread_mutexattr_setpshared( &destroyed_attr, pshared );
  assert( status == EINVAL );

  /* error cases for set and get protocol attribute */

  empty_line();

  puts( "Init: pthread_mutexattr_getprotocol - EINVAL (NULL attr)" );
  status = pthread_mutexattr_getprotocol( NULL, &protocol );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_getprotocol - EINVAL (NULL protocol)" );
  status = pthread_mutexattr_getprotocol( &attr, NULL );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_getprotocol - EINVAL (not initialized)" );
  status = pthread_mutexattr_getprotocol( &destroyed_attr, &protocol );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_setprotocol - EINVAL (NULL attr)" );
  status = pthread_mutexattr_setprotocol( NULL, PTHREAD_PRIO_NONE );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_setprotocol - EINVAL (invalid protocol)" );
  status = pthread_mutexattr_setprotocol( &attr, -1 );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_setprotocol - EINVAL (not initialized)" );
  status = pthread_mutexattr_setprotocol( &destroyed_attr, -1 );
  assert( status == EINVAL );

  /* error cases for set and get prioceiling attribute */

  empty_line();
 
  puts( "Init: pthread_mutexattr_getprioceiling - EINVAL (NULL attr)" );
  status = pthread_mutexattr_getprioceiling( NULL, &ceiling );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_getprioceiling - EINVAL (NULL prioceiling)" );
  status = pthread_mutexattr_getprioceiling( &attr, NULL );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_getprioceiling - EINVAL (not initialized)" );
  status = pthread_mutexattr_getprioceiling( &destroyed_attr, &ceiling );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_setprioceiling - EINVAL (NULL attr)" );
  status = pthread_mutexattr_setprioceiling( NULL, 128 );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_setprioceiling - EINVAL (invalid priority)" );
  status = pthread_mutexattr_setprioceiling( &attr, 512 );
  if ( status != EINVAL )
    printf( "status = %d\n", status );
  assert( status == EINVAL );
 
  puts( "Init: pthread_mutexattr_setprioceiling - EINVAL (not initialized)" );
  status = pthread_mutexattr_setprioceiling( &destroyed_attr, -1 );
  assert( status == EINVAL );

  /* create a thread */

  status = pthread_create( &Task_id, NULL, Task_1, NULL );
  assert( !status );

  /* now try some basic mutex operations */

  empty_line();

  puts( "Init: pthread_mutex_init - EINVAL (NULL mutex_id)" );
  status = pthread_mutex_init( NULL, &attr );
  assert( status == EINVAL );

  puts( "Init: pthread_mutex_init - EINVAL (not initialized attr)" );
  status = pthread_mutex_init( &Mutex_id, &destroyed_attr );
  assert( status == EINVAL );

  /* must get around error checks in attribute set routines */
  attr.protocol = -1;

  puts( "Init: pthread_mutex_init - EINVAL (bad protocol)" );
  status = pthread_mutex_init( &Mutex_id, &attr );
  assert( status == EINVAL );

  /* must get around error checks in attribute set routines */
  attr.protocol = PTHREAD_PRIO_INHERIT;
  attr.prio_ceiling = -1;

  puts( "Init: pthread_mutex_init - EINVAL (bad priority ceiling)" );
  status = pthread_mutex_init( &Mutex_id, &attr );
  assert( status == EINVAL );

  /* now set up for a success pthread_mutex_init */

  puts( "Init: Resetting mutex attributes" );
  status = pthread_mutexattr_init( &attr );
  assert( !status );

  puts( "Init: Changing mutex attributes" );
  status = pthread_mutexattr_setprotocol( &attr, PTHREAD_PRIO_INHERIT );
  assert( !status );
 
  status = pthread_mutexattr_setprioceiling( &attr, 128 );
  assert( !status );
 
  status = pthread_mutexattr_setpshared( &attr, PTHREAD_PROCESS_SHARED );
  assert( !status );
 
  Print_mutexattr( "Init: ", &attr );
 
  puts( "Init: Resetting mutex attributes" );
  status = pthread_mutexattr_init( &attr );
  assert( !status );

  /*
   *  Set the protocol to priority ceiling so the owner check happens
   *  and the EPERM test (later) will work.
   */

  status = pthread_mutexattr_setprotocol( &attr, PTHREAD_PRIO_INHERIT );
  assert( !status );
 
  puts( "Init: pthread_mutex_init - SUCCESSFUL" );
  status = pthread_mutex_init( &Mutex_id, &attr );
  if ( status )
    printf( "status = %d\n", status );
  assert( !status );

  /*
   *  This is not required to be an error and when it is, there are
   *  behavioral conflicts with other implementations.
   */
  puts( "Init: pthread_mutex_init - EBUSY (reinitialize an existing mutex) - skipped" );

#if 0
  status = pthread_mutex_init( &Mutex_id, &attr );