Stop exporting from libc the <mpool.h> and the mpool_* API

ports scan by sthen@

1 files changed, 122 insertions, 0 deletions

diff --git a/src/lib/libc/include/mpool.h b/src/lib/libc/include/mpool.h
new file mode 100644
index 0000000000..005b006d17
--- /dev/null
+++ b/src/lib/libc/include/mpool.h
@@ -0,0 +1,122 @@
+/*      $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 <sys/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) % 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