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96 lines
3.7 KiB
C
96 lines
3.7 KiB
C
/*-
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* Copyright (c) 2009-2010 Brad Penoff
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* Copyright (c) 2009-2010 Humaira Kamal
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* Copyright (c) 2011-2012 Irene Ruengeler
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* Copyright (c) 2011-2012 Michael Tuexen
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _USER_UMA_H_
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#define _USER_UMA_H_
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#define UMA_ZFLAG_FULL 0x40000000 /* Reached uz_maxpages */
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#define UMA_ALIGN_PTR (sizeof(void *) - 1) /* Alignment fit for ptr */
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/* __Userspace__ All these definitions will change for
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userspace Universal Memory Allocator (UMA). These are included
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for reference purposes and to avoid compile errors for the time being.
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*/
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typedef int (*uma_ctor)(void *mem, int size, void *arg, int flags);
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typedef void (*uma_dtor)(void *mem, int size, void *arg);
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typedef int (*uma_init)(void *mem, int size, int flags);
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typedef void (*uma_fini)(void *mem, int size);
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typedef struct uma_zone * uma_zone_t;
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typedef struct uma_keg * uma_keg_t;
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struct uma_cache {
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int stub; /* TODO __Userspace__ */
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};
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struct uma_keg {
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int stub; /* TODO __Userspace__ */
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};
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struct uma_zone {
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char *uz_name; /* Text name of the zone */
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struct mtx *uz_lock; /* Lock for the zone (keg's lock) */
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uma_keg_t uz_keg; /* Our underlying Keg */
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LIST_ENTRY(uma_zone) uz_link; /* List of all zones in keg */
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LIST_HEAD(,uma_bucket) uz_full_bucket; /* full buckets */
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LIST_HEAD(,uma_bucket) uz_free_bucket; /* Buckets for frees */
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uma_ctor uz_ctor; /* Constructor for each allocation */
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uma_dtor uz_dtor; /* Destructor */
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uma_init uz_init; /* Initializer for each item */
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uma_fini uz_fini; /* Discards memory */
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u_int64_t uz_allocs; /* Total number of allocations */
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u_int64_t uz_frees; /* Total number of frees */
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u_int64_t uz_fails; /* Total number of alloc failures */
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uint16_t uz_fills; /* Outstanding bucket fills */
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uint16_t uz_count; /* Highest value ub_ptr can have */
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/*
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* This HAS to be the last item because we adjust the zone size
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* based on NCPU and then allocate the space for the zones.
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*/
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struct uma_cache uz_cpu[1]; /* Per cpu caches */
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};
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/* Prototype */
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uma_zone_t
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uma_zcreate(char *name, size_t size, uma_ctor ctor, uma_dtor dtor,
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uma_init uminit, uma_fini fini, int align, uint32_t flags);
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#define uma_zone_set_max(zone, number) /* stub TODO __Userspace__ */
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uma_zone_t
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uma_zcreate(char *name, size_t size, uma_ctor ctor, uma_dtor dtor,
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uma_init uminit, uma_fini fini, int align, uint32_t flags) {
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return NULL; /* stub TODO __Userspace__. Also place implementation in a separate .c file */
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}
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#endif
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