diff options
Diffstat (limited to 'StdLib/Include/sys/pool.h')
| -rw-r--r-- | StdLib/Include/sys/pool.h | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/StdLib/Include/sys/pool.h b/StdLib/Include/sys/pool.h deleted file mode 100644 index 43c080a227..0000000000 --- a/StdLib/Include/sys/pool.h +++ /dev/null @@ -1,311 +0,0 @@ -/* $NetBSD: pool.h,v 1.54 2006/08/20 09:35:25 yamt Exp $ */
-
-/*-
- * Copyright (c) 1997, 1998, 1999, 2000 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Paul Kranenburg; by Jason R. Thorpe of the Numerical Aerospace
- * Simulation Facility, NASA Ames Research Center.
- *
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the NetBSD
- * Foundation, Inc. and its contributors.
- * 4. Neither the name of The NetBSD Foundation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _SYS_POOL_H_
-#define _SYS_POOL_H_
-
-#ifdef _KERNEL
-#define __POOL_EXPOSE
-#endif
-
-#if defined(_KERNEL_OPT)
-#include "opt_pool.h"
-#endif
-
-#ifdef __POOL_EXPOSE
-#include <sys/lock.h>
-#include <sys/queue.h>
-#include <sys/time.h>
-#include <sys/tree.h>
-#if defined(_KERNEL)
-#include <sys/callback.h>
-#endif /* defined(_KERNEL) */
-#endif
-
-#define PCG_NOBJECTS 16
-
-#define POOL_PADDR_INVALID ((paddr_t) -1)
-
-#ifdef __POOL_EXPOSE
-/* The pool cache group. */
-struct pool_cache_group {
- LIST_ENTRY(pool_cache_group)
- pcg_list; /* link in the pool cache's group list */
- u_int pcg_avail; /* # available objects */
- /* pointers to the objects */
- struct {
- void *pcgo_va; /* cache object virtual address */
- paddr_t pcgo_pa;/* cache object physical address */
- } pcg_objects[PCG_NOBJECTS];
-};
-
-LIST_HEAD(pool_cache_grouplist,pool_cache_group);
-struct pool_cache {
- LIST_ENTRY(pool_cache)
- pc_poollist; /* entry on pool's group list */
- struct pool_cache_grouplist
- pc_emptygroups; /* list of empty cache groups */
- struct pool_cache_grouplist
- pc_fullgroups; /* list of full cache groups */
- struct pool_cache_grouplist
- pc_partgroups; /* list of partial cache groups */
- struct pool *pc_pool; /* parent pool */
- struct simplelock pc_slock; /* mutex */
-
- int (*pc_ctor)(void *, void *, int);
- void (*pc_dtor)(void *, void *);
- void *pc_arg;
-
- /* Statistics. */
- unsigned long pc_hits; /* cache hits */
- unsigned long pc_misses; /* cache misses */
-
- unsigned long pc_ngroups; /* # cache groups */
-
- unsigned long pc_nitems; /* # objects currently in cache */
-};
-
-struct pool_allocator {
- void *(*pa_alloc)(struct pool *, int);
- void (*pa_free)(struct pool *, void *);
- unsigned int pa_pagesz;
-
- /* The following fields are for internal use only. */
- struct simplelock pa_slock;
- TAILQ_HEAD(, pool) pa_list; /* list of pools using this allocator */
- int pa_flags;
-#define PA_INITIALIZED 0x01
- int pa_pagemask;
- int pa_pageshift;
- struct vm_map *pa_backingmap;
-#if defined(_KERNEL)
- struct vm_map **pa_backingmapptr;
- SLIST_ENTRY(pool_allocator) pa_q;
-#endif /* defined(_KERNEL) */
-};
-
-LIST_HEAD(pool_pagelist,pool_item_header);
-
-struct pool {
- LIST_ENTRY(pool)
- pr_poollist;
- struct pool_pagelist
- pr_emptypages; /* Empty pages */
- struct pool_pagelist
- pr_fullpages; /* Full pages */
- struct pool_pagelist
- pr_partpages; /* Partially-allocated pages */
- struct pool_item_header *pr_curpage;
- struct pool *pr_phpool; /* Pool item header pool */
- LIST_HEAD(,pool_cache)
- pr_cachelist; /* Caches for this pool */
- unsigned int pr_size; /* Size of item */
- unsigned int pr_align; /* Requested alignment, must be 2^n */
- unsigned int pr_itemoffset; /* Align this offset in item */
- unsigned int pr_minitems; /* minimum # of items to keep */
- unsigned int pr_minpages; /* same in page units */
- unsigned int pr_maxpages; /* maximum # of pages to keep */
- unsigned int pr_npages; /* # of pages allocated */
- unsigned int pr_itemsperpage;/* # items that fit in a page */
- unsigned int pr_slack; /* unused space in a page */
- unsigned int pr_nitems; /* number of available items in pool */
- unsigned int pr_nout; /* # items currently allocated */
- unsigned int pr_hardlimit; /* hard limit to number of allocated
- items */
- struct pool_allocator *pr_alloc;/* back-end allocator */
- TAILQ_ENTRY(pool) pr_alloc_list;/* link on allocator's pool list */
-
- /* Drain hook. */
- void (*pr_drain_hook)(void *, int);
- void *pr_drain_hook_arg;
-
- const char *pr_wchan; /* tsleep(9) identifier */
- unsigned int pr_flags; /* r/w flags */
- unsigned int pr_roflags; /* r/o flags */
-#define PR_NOWAIT 0x00 /* for symmetry */
-#define PR_WAITOK 0x02
-#define PR_WANTED 0x04
-#define PR_PHINPAGE 0x40
-#define PR_LOGGING 0x80
-#define PR_LIMITFAIL 0x100 /* even if waiting, fail if we hit limit */
-#define PR_RECURSIVE 0x200 /* pool contains pools, for vmstat(8) */
-#define PR_NOTOUCH 0x400 /* don't use free items to keep internal state*/
-#define PR_NOALIGN 0x800 /* don't assume backend alignment */
-
- /*
- * `pr_slock' protects the pool's data structures when removing
- * items from or returning items to the pool, or when reading
- * or updating read/write fields in the pool descriptor.
- *
- * We assume back-end page allocators provide their own locking
- * scheme. They will be called with the pool descriptor _unlocked_,
- * since the page allocators may block.
- */
- struct simplelock pr_slock;
-
- SPLAY_HEAD(phtree, pool_item_header) pr_phtree;
-
- int pr_maxcolor; /* Cache colouring */
- int pr_curcolor;
- int pr_phoffset; /* Offset in page of page header */
-
- /*
- * Warning message to be issued, and a per-time-delta rate cap,
- * if the hard limit is reached.
- */
- const char *pr_hardlimit_warning;
- struct timeval pr_hardlimit_ratecap;
- struct timeval pr_hardlimit_warning_last;
-
- /*
- * Instrumentation
- */
- unsigned long pr_nget; /* # of successful requests */
- unsigned long pr_nfail; /* # of unsuccessful requests */
- unsigned long pr_nput; /* # of releases */
- unsigned long pr_npagealloc; /* # of pages allocated */
- unsigned long pr_npagefree; /* # of pages released */
- unsigned int pr_hiwat; /* max # of pages in pool */
- unsigned long pr_nidle; /* # of idle pages */
-
- /*
- * Diagnostic aides.
- */
- struct pool_log *pr_log;
- int pr_curlogentry;
- int pr_logsize;
-
- const char *pr_entered_file; /* reentrancy check */
- long pr_entered_line;
-
-#if defined(_KERNEL)
- struct callback_entry pr_reclaimerentry;
-#endif
-};
-#endif /* __POOL_EXPOSE */
-
-#ifdef _KERNEL
-/*
- * pool_allocator_kmem is the default that all pools get unless
- * otherwise specified. pool_allocator_nointr is provided for
- * pools that know they will never be accessed in interrupt
- * context.
- */
-extern struct pool_allocator pool_allocator_kmem;
-extern struct pool_allocator pool_allocator_nointr;
-#ifdef POOL_SUBPAGE
-/* The above are subpage allocators in this case. */
-extern struct pool_allocator pool_allocator_kmem_fullpage;
-extern struct pool_allocator pool_allocator_nointr_fullpage;
-#endif
-
-struct link_pool_init { /* same as args to pool_init() */
- struct pool *pp;
- size_t size;
- u_int align;
- u_int align_offset;
- int flags;
- const char *wchan;
- struct pool_allocator *palloc;
-};
-#define POOL_INIT(pp, size, align, align_offset, flags, wchan, palloc) \
-struct pool pp; \
-static const struct link_pool_init _link_ ## pp[1] = { \
- { &pp, size, align, align_offset, flags, wchan, palloc } \
-}; \
-__link_set_add_rodata(pools, _link_ ## pp)
-
-void pool_subsystem_init(void);
-
-void pool_init(struct pool *, size_t, u_int, u_int,
- int, const char *, struct pool_allocator *);
-void pool_destroy(struct pool *);
-
-void pool_set_drain_hook(struct pool *,
- void (*)(void *, int), void *);
-
-void *pool_get(struct pool *, int);
-void pool_put(struct pool *, void *);
-int pool_reclaim(struct pool *);
-
-#ifdef POOL_DIAGNOSTIC
-/*
- * These versions do reentrancy checking.
- */
-void *_pool_get(struct pool *, int, const char *, long);
-void _pool_put(struct pool *, void *, const char *, long);
-int _pool_reclaim(struct pool *, const char *, long);
-#define pool_get(h, f) _pool_get((h), (f), __FILE__, __LINE__)
-#define pool_put(h, v) _pool_put((h), (v), __FILE__, __LINE__)
-#define pool_reclaim(h) _pool_reclaim((h), __FILE__, __LINE__)
-#endif /* POOL_DIAGNOSTIC */
-
-int pool_prime(struct pool *, int);
-void pool_setlowat(struct pool *, int);
-void pool_sethiwat(struct pool *, int);
-void pool_sethardlimit(struct pool *, int, const char *, int);
-void pool_drain(void *);
-
-/*
- * Debugging and diagnostic aides.
- */
-void pool_print(struct pool *, const char *);
-void pool_printit(struct pool *, const char *,
- void (*)(const char *, ...));
-void pool_printall(const char *, void (*)(const char *, ...));
-int pool_chk(struct pool *, const char *);
-
-/*
- * Pool cache routines.
- */
-void pool_cache_init(struct pool_cache *, struct pool *,
- int (*)(void *, void *, int),
- void (*)(void *, void *),
- void *);
-void pool_cache_destroy(struct pool_cache *);
-void *pool_cache_get_paddr(struct pool_cache *, int, paddr_t *);
-#define pool_cache_get(pc, f) pool_cache_get_paddr((pc), (f), NULL)
-void pool_cache_put_paddr(struct pool_cache *, void *, paddr_t);
-#define pool_cache_put(pc, o) pool_cache_put_paddr((pc), (o), \
- POOL_PADDR_INVALID)
-void pool_cache_destruct_object(struct pool_cache *, void *);
-void pool_cache_invalidate(struct pool_cache *);
-#endif /* _KERNEL */
-
-#endif /* _SYS_POOL_H_ */
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