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/**
* @file rtems/score/wkspace.h
*
* This include file contains information related to the
* RAM Workspace. This Handler provides mechanisms which can be used to
* define, initialize and manipulate the workspace.
*/
/*
* 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.
*/
#ifndef _RTEMS_SCORE_WKSPACE_H
#define _RTEMS_SCORE_WKSPACE_H
/**
* @defgroup ScoreWorkspace Workspace Handler
*
* @ingroup Score
*
* This handler encapsulates functionality related to the management of
* the RTEMS Executive Workspace.
*/
/**@{*/
#ifdef __cplusplus
extern "C" {
#endif
#include <rtems/score/heap.h>
#include <rtems/score/interr.h>
/**
* @brief Executive workspace control.
*
* This is the heap control structure used to manage the RTEMS Executive
* Workspace.
*/
SCORE_EXTERN Heap_Control _Workspace_Area;
/**
* @brief Workspace Handler Initialization
*
* This routine performs the initialization necessary for this handler.
*/
void _Workspace_Handler_initialization(
Heap_Area *areas,
size_t area_count,
Heap_Initialization_or_extend_handler extend
);
/**
* @brief Allocate Memory from Workspace
*
* This routine returns the address of a block of memory of size
* bytes. If a block of the appropriate size cannot be allocated
* from the workspace, then NULL is returned.
*
* @param size is the requested size
*
* @return a pointer to the requested memory or NULL.
*/
void *_Workspace_Allocate(
size_t size
);
/**
* @brief Free Memory to the Workspace
*
* This function frees the specified block of memory. If the block
* belongs to the Workspace and can be successfully freed, then
* true is returned. Otherwise false is returned.
*
* @param block is the memory to free
*
* @note If @a block is equal to NULL, then the request is ignored.
* This allows the caller to not worry about whether or not
* a pointer is NULL.
*/
void _Workspace_Free(
void *block
);
/**
* @brief Workspace Allocate or Fail with Fatal Error
*
* This routine returns the address of a block of memory of @a size
* bytes. If a block of the appropriate size cannot be allocated
* from the workspace, then the internal error handler is invoked.
*
* @param[in] size is the desired number of bytes to allocate
* @return If successful, the starting address of the allocated memory
*/
void *_Workspace_Allocate_or_fatal_error(
size_t size
);
/**
* @brief Duplicates the @a string with memory from the Workspace.
*
* @param[in] string Pointer to zero terminated string.
* @param[in] len Length of the string (equal to strlen(string)).
*
* @return NULL Not enough memory.
* @return other Duplicated string.
*/
char *_Workspace_String_duplicate(
const char *string,
size_t len
);
#ifndef __RTEMS_APPLICATION__
#include <rtems/score/wkspace.inl>
#endif
#ifdef __cplusplus
}
#endif
/**@}*/
#endif
/* end of include file */
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