rtl-bit-alloc.h

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/* SPDX-License-Identifier: BSD-2-Clause */

 
/*
 *  COPYRIGHT (c) 2019 Chris Johns <chrisj@rtems.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#if !defined (_RTEMS_RTL_BIT_ALLOC_H_)
#define _RTEMS_RTL_BIT_ALLOC_H_
 
#include <rtems/rtl/rtl-fwd.h>
#include <rtems/rtl/rtl-obj-fwd.h>
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

typedef struct rtems_rtl_bit_alloc
{
  uint8_t*  base;       
  size_t    size;       
  uint32_t* bits;       
  size_t    block_size; 
  size_t    blocks;     
} rtems_rtl_bit_alloc;

rtems_rtl_bit_alloc* rtems_rtl_bit_alloc_open (void*  base,
                                               size_t size,
                                               size_t block_size,
                                               size_t used);

 
void rtems_rtl_bit_alloc_close (rtems_rtl_bit_alloc* balloc);

void* rtems_rtl_bit_alloc_balloc (rtems_rtl_bit_alloc* balloc, size_t size);

void rtems_rtl_bit_alloc_bfree (rtems_rtl_bit_alloc* balloc, void* addr, size_t size);
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif