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| author | Ken Raeburn <raeburn@mit.edu> | 2005-10-04 23:38:37 +0000 |
|---|---|---|
| committer | Ken Raeburn <raeburn@mit.edu> | 2005-10-04 23:38:37 +0000 |
| commit | 745cddfcd791359ff5ae5c2f33db3b196f6df481 (patch) | |
| tree | 4a5081d158f5f0e3ec784b1c2190d9870dceaa41 /src/util/db2/mpool/mpool.h | |
| parent | a6759444a5cc94637576e92cf425efda13a791ea (diff) | |
| download | krb5-745cddfcd791359ff5ae5c2f33db3b196f6df481.tar.gz krb5-745cddfcd791359ff5ae5c2f33db3b196f6df481.tar.xz krb5-745cddfcd791359ff5ae5c2f33db3b196f6df481.zip | |
Move the db2 library to the site of its one use, the kdb-db2 module.
Update configuration scripts, pathname make variables, etc., accordingly.
git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@17407 dc483132-0cff-0310-8789-dd5450dbe970
Diffstat (limited to 'src/util/db2/mpool/mpool.h')
| -rw-r--r-- | src/util/db2/mpool/mpool.h | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/src/util/db2/mpool/mpool.h b/src/util/db2/mpool/mpool.h deleted file mode 100644 index 627ad5b36..000000000 --- a/src/util/db2/mpool/mpool.h +++ /dev/null @@ -1,117 +0,0 @@ -/*- - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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 - */ - -#include "db-queue.h" - -/* - * 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) - -/* The BKT structures are the elements of the queues. */ -typedef struct _bkt { - CIRCLEQ_ENTRY(_bkt) hq; /* hash queue */ - CIRCLEQ_ENTRY(_bkt) q; /* lru queue */ - void *page; /* page */ - db_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 { - CIRCLEQ_HEAD(_lqh, _bkt) lqh; /* lru queue head */ - /* hash queue array */ - CIRCLEQ_HEAD(_hqh, _bkt) hqh[HASHSIZE]; - db_pgno_t curcache; /* current number of cached pages */ - db_pgno_t maxcache; /* max number of cached pages */ - db_pgno_t npages; /* number of pages in the file */ - u_long pagesize; /* file page size */ - int fd; /* file descriptor */ - /* page in conversion routine */ - void (*pgin) __P((void *, db_pgno_t, void *)); - /* page out conversion routine */ - void (*pgout) __P((void *, db_pgno_t, void *)); - void *pgcookie; /* cookie for page in/out routines */ -#ifdef STATISTICS - u_long cachehit; - u_long cachemiss; - u_long pagealloc; - u_long pageflush; - u_long pageget; - u_long pagenew; - u_long pageput; - u_long pageread; - u_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. */ - -#define mpool_open kdb2_mpool_open -#define mpool_filter kdb2_mpool_filter -#define mpool_new kdb2_mpool_new -#define mpool_get kdb2_mpool_get -#define mpool_delete kdb2_mpool_delete -#define mpool_put kdb2_mpool_put -#define mpool_sync kdb2_mpool_sync -#define mpool_close kdb2_mpool_close -#define mpool_stat kdb2_mpool_stat - -__BEGIN_DECLS -MPOOL *mpool_open __P((void *, int, db_pgno_t, db_pgno_t)); -void mpool_filter __P((MPOOL *, void (*)(void *, db_pgno_t, void *), - void (*)(void *, db_pgno_t, void *), void *)); -void *mpool_new __P((MPOOL *, db_pgno_t *, u_int)); -void *mpool_get __P((MPOOL *, db_pgno_t, u_int)); -int mpool_delete __P((MPOOL *, void *)); -int mpool_put __P((MPOOL *, void *, u_int)); -int mpool_sync __P((MPOOL *)); -int mpool_close __P((MPOOL *)); -#ifdef STATISTICS -void mpool_stat __P((MPOOL *)); -#endif -__END_DECLS |
