示例#1
0
文件: bsplibc.c 项目: epicsdeb/rtems
void bsp_libc_init(
  void *heap_begin,
  uintptr_t heap_size,
  size_t sbrk_amount
)
{
    RTEMS_Malloc_Initialize( heap_begin, heap_size, sbrk_amount );

    /*
     *  Init the RTEMS libio facility to provide UNIX-like system
     *  calls for use by newlib (ie: provide open, close, etc)
     *  Uses malloc() to get area for the iops, so must be after malloc init
     */
    if (rtems_libio_init_helper)
	(*rtems_libio_init_helper)();

    /*
     * Set up for the libc handling.
     */
    libc_init();
}
示例#2
0
文件: init.c 项目: chch1028/rtems
rtems_task Init(
  rtems_task_argument argument
)
{
  Heap_Control *real_heap;
  Heap_Area area;
  void *p;

  puts( "\n\n*** TEST MALLOC 04 ***" );

  /* Safe information on real heap */
  real_heap = malloc_get_heap_pointer();
  malloc_set_heap_pointer( &TempHeap );

  rtems_heap_set_sbrk_amount( 0 );

  puts( "No sbrk() amount" );

  sbrk_count = 0;
  offset     = 256;
  area.begin = &Malloc_Heap [0];
  area.size  = offset;
  RTEMS_Malloc_Initialize( &area, 1, NULL );

  errno = 0;
  p = malloc( 256 );
  rtems_test_assert( p == NULL );
  rtems_test_assert( errno == ENOMEM );
  rtems_test_assert( sbrk_count == 0 );

  rtems_heap_set_sbrk_amount( 256 );

  puts( "Misaligned extend" );

  sbrk_count = 0;
  offset     = 256;
  area.begin = &Malloc_Heap [0];
  area.size  = offset;
  RTEMS_Malloc_Initialize( &area, 1, NULL );

  p = malloc(1);
  rtems_test_assert( p != NULL );
  rtems_test_assert( sbrk_count == 0 );

  p = malloc(257);
  rtems_test_assert( p != NULL );
  rtems_test_assert( sbrk_count == 1 );

  puts( "Not enough sbrk() space" );

  sbrk_count = 0;
  offset     = 256;
  area.begin = &Malloc_Heap [0];
  area.size  = offset;
  RTEMS_Malloc_Initialize( &area, 1, NULL );

  errno = 0;
  p = malloc( sizeof( Malloc_Heap ) );
  rtems_test_assert( p == NULL );
  rtems_test_assert( errno == ENOMEM );
  rtems_test_assert( sbrk_count == 1 );

  puts( "Valid heap extend" );

  sbrk_count = 0;
  offset     = 256;
  area.begin = &Malloc_Heap [0];
  area.size  = offset;
  RTEMS_Malloc_Initialize( &area, 1, NULL );

  p = malloc( 128 );
  rtems_test_assert( p != NULL );
  rtems_test_assert( sbrk_count == 0 );

  p = malloc( 128 );
  rtems_test_assert( p != NULL );
  rtems_test_assert( sbrk_count == 1 );

  puts( "Invalid heap extend" );

  sbrk_count = -1;
  offset     = 256;
  area.begin = &Malloc_Heap [0];
  area.size  = offset;
  RTEMS_Malloc_Initialize( &area, 1, NULL );

  errno = 0;
  p = malloc( 256 );
  rtems_test_assert( p == NULL );
  rtems_test_assert( errno == ENOMEM );
  rtems_test_assert( sbrk_count == 2 );

  /* Restore information on real heap */
  malloc_set_heap_pointer( real_heap );

  puts( "*** END OF TEST MALLOC 04 ***" );

  rtems_test_exit(0);
}