rtl-obj-cache.h

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/*
 *  COPYRIGHT (c) 2012, 2018 Chris Johns <chrisj@rtems.org>
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */
#if !defined (_RTEMS_RTL_OBJ_CACHE_H_)
#define _RTEMS_RTL_OBJ_CACHE_H_

#include <fcntl.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

typedef struct rtems_rtl_obj_cache
{
  int      fd;        
  size_t   file_size; 
  off_t    offset;    
  size_t   size;      
  size_t   level;     
  uint8_t* buffer;    
} rtems_rtl_obj_cache;

bool rtems_rtl_obj_cache_open (rtems_rtl_obj_cache* cache, size_t size);

void rtems_rtl_obj_cache_close (rtems_rtl_obj_cache* cache);

void rtems_rtl_obj_cache_flush (rtems_rtl_obj_cache* cache);

bool rtems_rtl_obj_cache_read (rtems_rtl_obj_cache* cache,
                               int                  fd,
                               off_t                offset,
                               void**               buffer,
                               size_t*              length);

bool rtems_rtl_obj_cache_read_byval (rtems_rtl_obj_cache* cache,
                                     int                  fd,
                                     off_t                offset,
                                     void*                buffer,
                                     size_t               length);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif