84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 2003, 2004 Silicon Graphics International Corp.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* 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,
|
||
|
|
* without modification.
|
||
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
||
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
||
|
|
* including a substantially similar Disclaimer requirement for further
|
||
|
|
* binary redistribution.
|
||
|
|
*
|
||
|
|
* NO WARRANTY
|
||
|
|
* 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 MERCHANTIBILITY AND FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
|
||
|
|
*
|
||
|
|
* $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_mem_pool.h#1 $
|
||
|
|
* $FreeBSD$
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
* CAM Target Layer memory pool code.
|
||
|
|
*
|
||
|
|
* Author: Ken Merry <ken@FreeBSD.org>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _CTL_MEMPOOL_H_
|
||
|
|
#define _CTL_MEMPOOL_H_
|
||
|
|
|
||
|
|
typedef enum {
|
||
|
|
CTL_MEM_POOL_NONE,
|
||
|
|
CTL_MEM_POOL_PERM_GROW
|
||
|
|
} ctl_mem_pool_flags;
|
||
|
|
|
||
|
|
struct ctl_mem_pool {
|
||
|
|
ctl_mem_pool_flags flags;
|
||
|
|
int chunk_size;
|
||
|
|
int grow_inc;
|
||
|
|
struct mtx lock;
|
||
|
|
struct cv wait_mem;
|
||
|
|
STAILQ_HEAD(, ctl_mem_element) free_mem_list;
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef enum {
|
||
|
|
CTL_MEM_ELEMENT_NONE,
|
||
|
|
CTL_MEM_ELEMENT_PREALLOC
|
||
|
|
} ctl_mem_element_flags;
|
||
|
|
|
||
|
|
struct ctl_mem_element {
|
||
|
|
ctl_mem_element_flags flags;
|
||
|
|
struct ctl_mem_pool *pool;
|
||
|
|
uint8_t *bytes;
|
||
|
|
STAILQ_ENTRY(ctl_mem_element) links;
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifdef _KERNEL
|
||
|
|
|
||
|
|
MALLOC_DECLARE(M_CTL_POOL);
|
||
|
|
|
||
|
|
int ctl_init_mem_pool(struct ctl_mem_pool *pool, int chunk_size,
|
||
|
|
ctl_mem_pool_flags flags, int grow_inc,
|
||
|
|
int initial_pool_size);
|
||
|
|
struct ctl_mem_element *ctl_alloc_mem_element(struct ctl_mem_pool *pool,
|
||
|
|
int can_wait);
|
||
|
|
void ctl_free_mem_element(struct ctl_mem_element *mem);
|
||
|
|
int ctl_grow_mem_pool(struct ctl_mem_pool *pool, int count,
|
||
|
|
int can_wait);
|
||
|
|
int ctl_shrink_mem_pool(struct ctl_mem_pool *pool);
|
||
|
|
#endif /* _KERNEL */
|
||
|
|
|
||
|
|
#endif /* _CTL_MEMPOOL_H_ */
|