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ZONE(9): Add and use red-black tree chunk alloc

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This commit is contained in:
Sebastian Huber
2013-10-25 15:09:17 +02:00
parent 4adeb59b18
commit 3e2938873d
8 changed files with 292 additions and 139 deletions
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97
rtemsbsd/include/machine/rtems-bsd-chunk.h Normal file
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/**
* @file
*
* @ingroup rtems_bsd_machine
*
* @brief TODO.
*/
/*
* Copyright (c) 2013 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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 AUTHOR 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 AUTHOR 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.
*/
#ifndef _RTEMS_BSD_MACHINE_RTEMS_BSD_CHUNK_H_
#define _RTEMS_BSD_MACHINE_RTEMS_BSD_CHUNK_H_
/*
* A chunk is a fixed size memory area with some meta information attached to
* it. This API is used by ZONE(9).
*/
#include <sys/cdefs.h>
#include <rtems/rbtree.h>
__BEGIN_DECLS
typedef struct rtems_bsd_chunk_info rtems_bsd_chunk_info;
typedef struct rtems_bsd_chunk_control rtems_bsd_chunk_control;
typedef void (*rtems_bsd_chunk_info_ctor)(rtems_bsd_chunk_control *self,
rtems_bsd_chunk_info *info);
typedef void (*rtems_bsd_chunk_info_dtor)(rtems_bsd_chunk_control *self,
rtems_bsd_chunk_info *info);
struct rtems_bsd_chunk_info {
rtems_rbtree_node node;
uintptr_t begin;
uintptr_t end;
};
struct rtems_bsd_chunk_control {
rtems_rbtree_control chunks;
uintptr_t info_size;
rtems_bsd_chunk_info_ctor info_ctor;
rtems_bsd_chunk_info_dtor info_dtor;
};
void rtems_bsd_chunk_init(rtems_bsd_chunk_control *self, uintptr_t info_size,
rtems_bsd_chunk_info_ctor info_ctor, rtems_bsd_chunk_info_dtor info_dtor);
void *rtems_bsd_chunk_alloc(rtems_bsd_chunk_control *self,
uintptr_t chunk_size);
void rtems_bsd_chunk_free(rtems_bsd_chunk_control *self,
void *some_addr_in_chunk);
rtems_bsd_chunk_info *rtems_bsd_chunk_get_info(rtems_bsd_chunk_control *self,
void *some_addr_in_chunk);
void *rtems_bsd_chunk_get_begin(rtems_bsd_chunk_control *self,
void *some_addr_in_chunk);
void rtems_bsd_chunk_info_dtor_default(rtems_bsd_chunk_control *self,
rtems_bsd_chunk_info *info);
__END_DECLS
#endif /* _RTEMS_BSD_MACHINE_RTEMS_BSD_CHUNK_H_ */