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/*
* Workspace Handler
*
* COPYRIGHT (c) 1989-2009.
* 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.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/config.h>
#include <rtems/score/wkspace.h>
#include <rtems/score/interr.h>
#include <string.h> /* for memset */
/* #define DEBUG_WORKSPACE */
#if defined(DEBUG_WORKSPACE)
#include <rtems/bspIo.h>
#endif
/*
* _Workspace_Handler_initialization
*/
void _Workspace_Handler_initialization(void)
{
uintptr_t memory_available = 0;
void *starting_address = rtems_configuration_get_work_space_start();
uintptr_t size = rtems_configuration_get_work_space_size();
if ( rtems_configuration_get_do_zero_of_workspace() )
memset( starting_address, 0, size );
memory_available = _Heap_Initialize(
&_Workspace_Area,
starting_address,
size,
CPU_HEAP_ALIGNMENT
);
if ( memory_available == 0 )
_Internal_error_Occurred(
INTERNAL_ERROR_CORE,
true,
INTERNAL_ERROR_TOO_LITTLE_WORKSPACE
);
}
/*
* _Workspace_Allocate
*/
void *_Workspace_Allocate(
size_t size
)
{
void *memory;
memory = _Heap_Allocate( &_Workspace_Area, size );
#if defined(DEBUG_WORKSPACE)
printk(
"Workspace_Allocate(%d) from %p/%p -> %p\n",
size,
__builtin_return_address( 0 ),
__builtin_return_address( 1 ),
memory
);
#endif
return memory;
}
/*
* _Workspace_Free
*/
void _Workspace_Free(
void *block
)
{
#if defined(DEBUG_WORKSPACE)
printk(
"Workspace_Free(%p) from %p/%p\n",
block,
__builtin_return_address( 0 ),
__builtin_return_address( 1 )
);
#endif
_Heap_Free( &_Workspace_Area, block );
}
/*
* _Workspace_Allocate_or_fatal_error
*/
void *_Workspace_Allocate_or_fatal_error(
size_t size
)
{
void *memory;
memory = _Heap_Allocate( &_Workspace_Area, size );
#if defined(DEBUG_WORKSPACE)
printk(
"Workspace_Allocate_or_fatal_error(%d) from %p/%p -> %p\n",
size,
__builtin_return_address( 0 ),
__builtin_return_address( 1 ),
memory
);
#endif
if ( memory == NULL )
_Internal_error_Occurred(
INTERNAL_ERROR_CORE,
true,
INTERNAL_ERROR_WORKSPACE_ALLOCATION
);
return memory;
}
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