From eb8dd9dca1228af0cd132f515509051ecfabf6f6 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Mon, 14 Apr 2025 17:32:06 +0000 Subject: This commit was manufactured by cvs2git to create tag 'tb_20250414'. --- src/lib/libc/include/mpool.h | 122 ------------------------------------------- 1 file changed, 122 deletions(-) delete mode 100644 src/lib/libc/include/mpool.h (limited to 'src/lib/libc/include/mpool.h') diff --git a/src/lib/libc/include/mpool.h b/src/lib/libc/include/mpool.h deleted file mode 100644 index 005b006d17..0000000000 --- a/src/lib/libc/include/mpool.h +++ /dev/null @@ -1,122 +0,0 @@ -/* $OpenBSD: mpool.h,v 1.1 2015/09/09 15:35:24 guenther Exp $ */ -/* $NetBSD: mpool.h,v 1.7 1996/05/03 21:13:41 cgd Exp $ */ - -/*- - * Copyright (c) 1991, 1993, 1994 - * The Regents of the University of California. 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. - * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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. - * - * @(#)mpool.h 8.4 (Berkeley) 11/2/95 - */ - -#ifndef _MPOOL_H_ -#define _MPOOL_H_ - -#include - -/* - * The memory pool scheme is a simple one. Each in-memory page is referenced - * by a bucket which is threaded in up to two of three ways. All active pages - * are threaded on a hash chain (hashed by page number) and an lru chain. - * Inactive pages are threaded on a free chain. Each reference to a memory - * pool is handed an opaque MPOOL cookie which stores all of this information. - */ -#define HASHSIZE 128 -#define HASHKEY(pgno) ((pgno - 1 + HASHSIZE) % HASHSIZE) - -/* The BKT structures are the elements of the queues. */ -typedef struct _bkt { - TAILQ_ENTRY(_bkt) hq; /* hash queue */ - TAILQ_ENTRY(_bkt) q; /* lru queue */ - void *page; /* page */ - pgno_t pgno; /* page number */ - -#define MPOOL_DIRTY 0x01 /* page needs to be written */ -#define MPOOL_PINNED 0x02 /* page is pinned into memory */ -#define MPOOL_INUSE 0x04 /* page address is valid */ - u_int8_t flags; /* flags */ -} BKT; - -typedef struct MPOOL { - TAILQ_HEAD(_lqh, _bkt) lqh; /* lru queue head */ - /* hash queue array */ - TAILQ_HEAD(_hqh, _bkt) hqh[HASHSIZE]; - pgno_t curcache; /* current number of cached pages */ - pgno_t maxcache; /* max number of cached pages */ - pgno_t npages; /* number of pages in the file */ - unsigned long pagesize; /* file page size */ - int fd; /* file descriptor */ - /* page in conversion routine */ - void (*pgin)(void *, pgno_t, void *); - /* page out conversion routine */ - void (*pgout)(void *, pgno_t, void *); - void *pgcookie; /* cookie for page in/out routines */ -#ifdef STATISTICS - unsigned long cachehit; - unsigned long cachemiss; - unsigned long pagealloc; - unsigned long pageflush; - unsigned long pageget; - unsigned long pagenew; - unsigned long pageput; - unsigned long pageread; - unsigned long pagewrite; -#endif -} MPOOL; - -#define MPOOL_IGNOREPIN 0x01 /* Ignore if the page is pinned. */ -#define MPOOL_PAGE_REQUEST 0x01 /* Allocate a new page with a - specific page number. */ -#define MPOOL_PAGE_NEXT 0x02 /* Allocate a new page with the next - page number. */ - -__BEGIN_HIDDEN_DECLS -MPOOL *mpool_open(void *, int, pgno_t, pgno_t); -void mpool_filter(MPOOL *, void (*)(void *, pgno_t, void *), - void (*)(void *, pgno_t, void *), void *); -void *mpool_new(MPOOL *, pgno_t *, unsigned int); -void *mpool_get(MPOOL *, pgno_t, unsigned int); -int mpool_delete(MPOOL *, void *); -int mpool_put(MPOOL *, void *, unsigned int); -int mpool_sync(MPOOL *); -int mpool_close(MPOOL *); - -PROTO_NORMAL(mpool_open); -PROTO_NORMAL(mpool_filter); -PROTO_NORMAL(mpool_new); -PROTO_NORMAL(mpool_get); -PROTO_NORMAL(mpool_delete); -PROTO_NORMAL(mpool_put); -PROTO_NORMAL(mpool_sync); -PROTO_NORMAL(mpool_close); - -#ifdef STATISTICS -void mpool_stat(MPOOL *); -PROTO_NORMAL(mpool_stat); -#endif -__END_HIDDEN_DECLS - -#endif -- cgit v1.2.3-55-g6feb