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authorUlrich Drepper <drepper@redhat.com>1997-08-27 20:26:10 +0000
committerUlrich Drepper <drepper@redhat.com>1997-08-27 20:26:10 +0000
commit92f1da4da04a7a86ddee91be5eaf0b10c333ac64 (patch)
tree2a10ce9e4e407e7e5b5ca092ca0947d234b5ff60 /db2/hash
parent22be878ecbc66606371bd33258f56e6711e6ba7a (diff)
downloadglibc-cvs/libc-ud-970827.tar.xz
glibc-cvs/libc-ud-970827.zip
1997-08-10 19:17 Philip Blundell <Philip.Blundell@pobox.com> * nss/nss_db/db-XXX.c: Include <db_185.h> not <db.h>. Somebody should update this to use the new db API. * nss/nss_db/db-netgrp.c: Likewise. * nss/nss_db/db-alias.c: Likewise. * db2/Makefile: Makefile for db-2.x in glibc. 1997-08-27 21:20 Ulrich Drepper <drepper@cygnus.com> * csu/Makefile (before-compile): New goal. Make sure abi-tag.h is generated. [$(elf)=yes] (asm-CPPFLAGS): Make sure abi-tag.h file can be found. * Makeconfig [$(build-omitfp)=yes] (CFLAGS-.o): Add -D__USE_STRING_INLINES. * string/string.f: Move strnlen optimization after inclusion of <bits/string.h>. Include <bits/string.h> only if __USE_STRING_INLINES is defined. * sysdeps/generic/memcpy.c: Undef memcpy to allow macro of this name in <bits/string.h>. * sysdeps/generic/memset.c: Likewise. * sysdeps/i386/string.h: i386 optimized string functions. * sysdeps/i386/i486string.h: i486+ optimized string functions. * Makefile (subdirs): Change db to db2. * shlib-versions: Bump libdb verion number to 3. * include/db.h: Include from db2 directory. * include/db_185.h: New file. * sysdeps/i386/Makefile [$(subdirs)=db2] (CPPFLAGS): Add macros to provide spinlock information for db2. * sysdeps/m68k/m68020/Makefile: New file. Likewise. * sysdeps/sparc/Makefile: New file. Likewise. * sysdeps/unix/sysv/linux/Makefile [$(subdirs)=db2] (CPPFLAGS): Add -DHAVE_LLSEEK. * db2/config.h: Hand-edited config file for db2 in glibc. * db2/compat.h: New file from db-2.3.4. * db2/db.h: Likewise. * db2/db_185.h: Likewise. * db2/db_int.h: Likewise. * db2/makedb.c: Likewise. * db2/btree/bt_close.c: Likewise. * db2/btree/bt_compare.c: Likewise. * db2/btree/bt_conv.c: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_delete.c: Likewise. * db2/btree/bt_open.c: Likewise. * db2/btree/bt_page.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/btree/bt_rsearch.c: Likewise. * db2/btree/bt_search.c: Likewise. * db2/btree/bt_split.c: Likewise. * db2/btree/bt_stat.c: Likewise. * db2/btree/btree.src: Likewise. * db2/common/db_appinit.c: Likewise. * db2/common/db_err.c: Likewise. * db2/common/db_byteorder.c: Likewise. * db2/common/db_apprec.c: Likewise. * db2/common/db_salloc.c: Likewise. * db2/common/db_log2.c: Likewise. * db2/common/db_region.c: Likewise. * db2/common/db_shash.c: Likewise. * db2/db/db.c: Likewise. * db2/db/db.src: Likewise. * db2/db/db_conv.c: Likewise. * db2/db/db_dispatch.c: Likewise. * db2/db/db_dup.c: Likewise. * db2/db/db_overflow.c: Likewise. * db2/db/db_pr.c: Likewise. * db2/db/db_rec.c: Likewise. * db2/db/db_ret.c: Likewise. * db2/db/db_thread.c: Likewise. * db2/db/db_auto.c: Likewise. * db2/db185/db185.c: Likewise. * db2/db185/db185_int.h: Likewise. * db2/dbm/dbm.c: Likewise. * db2/hash/hash.c: Likewise. * db2/hash/hash.src: Likewise. * db2/hash/hash_page.c: Likewise. * db2/hash/hash_conv.c: Likewise. * db2/hash/hash_debug.c: Likewise. * db2/hash/hash_stat.c: Likewise. * db2/hash/hash_rec.c: Likewise. * db2/hash/hash_dup.c: Likewise. * db2/hash/hash_func.c: Likewise. * db2/hash/hash_auto.c: Likewise. * db2/include/mp.h: Likewise. * db2/include/btree.h: Likewise. * db2/include/db.h.src: Likewise. * db2/include/db_int.h.src: Likewise. * db2/include/db_shash.h: Likewise. * db2/include/db_swap.h: Likewise. * db2/include/db_185.h.src: Likewise. * db2/include/txn.h: Likewise. * db2/include/db_am.h: Likewise. * db2/include/shqueue.h: Likewise. * db2/include/hash.h: Likewise. * db2/include/db_dispatch.h: Likewise. * db2/include/lock.h: Likewise. * db2/include/db_page.h: Likewise. * db2/include/log.h: Likewise. * db2/include/db_auto.h: Likewise. * db2/include/btree_auto.h: Likewise. * db2/include/hash_auto.h: Likewise. * db2/include/log_auto.h: Likewise. * db2/include/txn_auto.h: Likewise. * db2/include/db_ext.h: Likewise. * db2/include/btree_ext.h: Likewise. * db2/include/clib_ext.h: Likewise. * db2/include/common_ext.h: Likewise. * db2/include/hash_ext.h: Likewise. * db2/include/lock_ext.h: Likewise. * db2/include/log_ext.h: Likewise. * db2/include/mp_ext.h: Likewise. * db2/include/mutex_ext.h: Likewise. * db2/include/os_ext.h: Likewise. * db2/include/txn_ext.h: Likewise. * db2/include/cxx_int.h: Likewise. * db2/include/db_cxx.h: Likewise. * db2/include/queue.h: Likewise. * db2/lock/lock.c: Likewise. * db2/lock/lock_conflict.c: Likewise. * db2/lock/lock_util.c: Likewise. * db2/lock/lock_deadlock.c: Likewise. * db2/log/log.c: Likewise. * db2/log/log_get.c: Likewise. * db2/log/log.src: Likewise. * db2/log/log_compare.c: Likewise. * db2/log/log_put.c: Likewise. * db2/log/log_rec.c: Likewise. * db2/log/log_archive.c: Likewise. * db2/log/log_register.c: Likewise. * db2/log/log_auto.c: Likewise. * db2/log/log_findckp.c: Likewise. * db2/mp/mp_bh.c: Likewise. * db2/mp/mp_fget.c: Likewise. * db2/mp/mp_fopen.c: Likewise. * db2/mp/mp_fput.c: Likewise. * db2/mp/mp_fset.c: Likewise. * db2/mp/mp_open.c: Likewise. * db2/mp/mp_region.c: Likewise. * db2/mp/mp_pr.c: Likewise. * db2/mp/mp_sync.c: Likewise. * db2/mutex/68020.gcc: Likewise. * db2/mutex/mutex.c: Likewise. * db2/mutex/README: Likewise. * db2/mutex/x86.gcc: Likewise. * db2/mutex/sparc.gcc: Likewise. * db2/mutex/uts4.cc.s: Likewise. * db2/mutex/alpha.dec: Likewise. * db2/mutex/alpha.gcc: Likewise. * db2/mutex/parisc.gcc: Likewise. * db2/mutex/parisc.hp: Likewise. * db2/os/db_os_abs.c: Likewise. * db2/os/db_os_dir.c: Likewise. * db2/os/db_os_fid.c: Likewise. * db2/os/db_os_lseek.c: Likewise. * db2/os/db_os_mmap.c: Likewise. * db2/os/db_os_open.c: Likewise. * db2/os/db_os_rw.c: Likewise. * db2/os/db_os_sleep.c: Likewise. * db2/os/db_os_stat.c: Likewise. * db2/os/db_os_unlink.c: Likewise. * db2/txn/txn.c: Likewise. * db2/txn/txn.src: Likewise. * db2/txn/txn_rec.c: Likewise. * db2/txn/txn_auto.c: Likewise. * db2/clib/getlong.c: Likewise. * db2/progs/db_archive/db_archive.c: Likewise. * db2/progs/db_checkpoint/db_checkpoint.c: Likewise. * db2/progs/db_deadlock/db_deadlock.c: Likewise. * db2/progs/db_dump/db_dump.c: Likewise. * db2/progs/db_dump185/db_dump185.c: Likewise. * db2/progs/db_load/db_load.c: Likewise. * db2/progs/db_printlog/db_printlog.c: Likewise. * db2/progs/db_recover/db_recover.c: Likewise. * db2/progs/db_stat/db_stat.c: Likewise. * libio/stdio.h [__cplusplus] (__STDIO_INLINE): Define as inline. * po/de.po, po/sv.po: Update from 2.0.5 translations. * sysdeps/unix/sysv/linux/netinet/tcp.h: Pretty print. * sunrpc/rpc/xdr.h (XDR): Don't define argument of x_destroy callback as const. * sunrpc/xdr_mem.c (xdrmem_destroy): Don't define argument as const. * sunrpx/xdr_rec.c (xdrrec_destroy): Likewise. * sunrpx/xdr_stdio.c (xdrstdio_destroy): Likewise. 1997-08-27 18:47 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/if_index.c: Include <errno.h>. Reported by Benjamin Kosnik <bkoz@cygnus.com>. 1997-08-27 02:27 Roland McGrath <roland@baalperazim.frob.com> * abi-tags: New file. * csu/Makefile (distribute): Remove abi-tag.h. ($(objpfx)abi-tag.h): New target. * Makefile (distribute): Add abi-tags. * sysdeps/unix/sysv/linux/abi-tag.h: File removed. * sysdeps/mach/hurd/abi-tag.h: File removed. * sysdeps/stub/abi-tag.h: File removed. 1997-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/make-syscalls.sh: Change output so that it generates compilation rules only for the currently selected object suffixes. 1997-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/dl-machine.h (RTLD_START): Switch back to previous section to avoid confusing the compiler. * sysdeps/alpha/dl-machine.h (RTLD_START): Likewise. * sysdeps/i386/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/mips64/dl-machine.h (RTLD_START): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise. * sysdeps/m68k/dl-machine.h (elf_machine_load_address): Use a GOT relocation instead of a constant to avoid text relocation. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (RTLD_START): Declare global labels as functions and add size directive. 1997-08-25 17:01 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/bits/select.h: Correct assembler versions to work even for descriptors >= 32. * stdlib/alloca.h: Don't define alloca to __alloca since if gcc is used __alloca is not defined to __builtin_alloca and so might not be available. Reported by Uwe Ohse <uwe@ohse.de>. * sysdeps/unix/sysv/linux/sys/sysmacros.h: Define macros in a special way if gcc is not used and so dev_t is an array. Reported by Uwe Ohse <uwe@ohse.de>. 1997-08-23 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/libc.texinfo: Reorder chapters to match logical order. 1997-08-25 12:22 Ulrich Drepper <drepper@cygnus.com> * sunrpc/rpc/xdr.h: Change name of parameters in prototypes of xdr_reference, xdrmem_create, and xdrstdio_create because of clash with g++ internal symbols. Patch by Sudish Joseph <sj@eng.mindspring.net>. * elf/dl-deps.c: Implement handling of DT_FILTER.
Diffstat (limited to 'db2/hash')
-rw-r--r--db2/hash/hash.c1440
-rw-r--r--db2/hash/hash.src211
-rw-r--r--db2/hash/hash_auto.c1343
-rw-r--r--db2/hash/hash_conv.c101
-rw-r--r--db2/hash/hash_debug.c96
-rw-r--r--db2/hash/hash_dup.c544
-rw-r--r--db2/hash/hash_func.c219
-rw-r--r--db2/hash/hash_page.c1775
-rw-r--r--db2/hash/hash_rec.c810
-rw-r--r--db2/hash/hash_stat.c58
10 files changed, 6597 insertions, 0 deletions
diff --git a/db2/hash/hash.c b/db2/hash/hash.c
new file mode 100644
index 0000000000..6d8c40057d
--- /dev/null
+++ b/db2/hash/hash.c
@@ -0,0 +1,1440 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997
+ * Sleepycat Software. All rights reserved.
+ */
+/*
+ * Copyright (c) 1990, 1993, 1994
+ * Margo Seltzer. All rights reserved.
+ */
+/*
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * 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.
+ */
+
+#include "config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)hash.c 10.25 (Sleepycat) 8/24/97";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#endif
+
+#include "shqueue.h"
+#include "db_int.h"
+#include "db_page.h"
+#include "db_am.h"
+#include "db_ext.h"
+#include "hash.h"
+#include "log.h"
+
+static int __ham_c_close __P((DBC *));
+static int __ham_c_del __P((DBC *, int));
+static int __ham_c_get __P((DBC *, DBT *, DBT *, int));
+static int __ham_c_put __P((DBC *, DBT *, DBT *, int));
+static int __ham_c_init __P((DB *, DB_TXN *, DBC **));
+static int __ham_cursor __P((DB *, DB_TXN *, DBC **));
+static int __ham_delete __P((DB *, DB_TXN *, DBT *, int));
+static int __ham_dup_return __P((HTAB *, HASH_CURSOR *, DBT *, int));
+static int __ham_get __P((DB *, DB_TXN *, DBT *, DBT *, int));
+static void __ham_init_htab __P((HTAB *));
+static int __ham_lookup __P((HTAB *,
+ HASH_CURSOR *, const DBT *, u_int32_t, db_lockmode_t));
+static int __ham_overwrite __P((HTAB *, HASH_CURSOR *, DBT *));
+static int __ham_put __P((DB *, DB_TXN *, DBT *, DBT *, int));
+static int __ham_sync __P((DB *, int));
+
+/************************** INTERFACE ROUTINES ***************************/
+/* OPEN/CLOSE */
+
+/*
+ * __ham_open --
+ *
+ * PUBLIC: int __ham_open __P((DB *, DB_INFO *));
+ */
+int
+__ham_open(dbp, dbinfo)
+ DB *dbp;
+ DB_INFO *dbinfo;
+{
+ DB_ENV *dbenv;
+ DBC *curs;
+ HTAB *hashp;
+ int file_existed, ret;
+
+ dbenv = dbp->dbenv;
+
+ if ((hashp = (HTAB *)calloc(1, sizeof(HTAB))) == NULL)
+ return (ENOMEM);
+ hashp->dbp = dbp;
+
+ /* Set the hash function if specified by the user. */
+ if (dbinfo != NULL && dbinfo->h_hash != NULL)
+ hashp->hash = dbinfo->h_hash;
+
+ /*
+ * Initialize the remaining fields of the dbp. The type, close and
+ * fd functions are all set in db_open.
+ */
+ dbp->internal = hashp;
+ dbp->cursor = __ham_cursor;
+ dbp->del = __ham_delete;
+ dbp->get = __ham_get;
+ dbp->put = __ham_put;
+ dbp->sync = __ham_sync;
+
+ /* If locking is turned on, lock the meta data page. */
+ if (F_ISSET(dbp, DB_AM_LOCKING)) {
+ dbp->lock.pgno = BUCKET_INVALID;
+ if ((ret = lock_get(dbenv->lk_info, dbp->locker,
+ 0, &dbp->lock_dbt, DB_LOCK_READ, &hashp->hlock)) != 0) {
+ if (ret < 0)
+ ret = EAGAIN;
+ goto out;
+ }
+ }
+
+ /*
+ * Now, we can try to read the meta-data page and figure out
+ * if we set up locking and get the meta-data page properly.
+ * If this is a new file, initialize it, and put it back dirty.
+ */
+ if ((ret = __ham_get_page(hashp->dbp, 0, (PAGE **)&hashp->hdr)) != 0)
+ goto out;
+
+ /* Initialize the hashp structure */
+ if (hashp->hdr->magic == DB_HASHMAGIC) {
+ file_existed = 1;
+ /* File exists, verify the data in the header. */
+ if (hashp->hash == NULL)
+ hashp->hash =
+ hashp->hdr->version < 5 ? __ham_func4 : __ham_func5;
+ if (hashp->hash(CHARKEY, sizeof(CHARKEY)) !=
+ hashp->hdr->h_charkey) {
+ __db_err(hashp->dbp->dbenv,
+ "hash: incompatible hash function");
+ ret = EINVAL;
+ goto out;
+ }
+ if (F_ISSET(hashp->hdr, DB_HASH_DUP))
+ F_SET(dbp, DB_AM_DUP);
+ } else {
+ /*
+ * File does not exist, we must initialize the header. If
+ * locking is enabled that means getting a write lock first.
+ */
+ file_existed = 0;
+ if (F_ISSET(dbp, DB_AM_LOCKING) &&
+ ((ret = lock_put(dbenv->lk_info, hashp->hlock)) != 0 ||
+ (ret = lock_get(dbenv->lk_info, dbp->locker, 0,
+ &dbp->lock_dbt, DB_LOCK_WRITE, &hashp->hlock)) != 0)) {
+ if (ret < 0)
+ ret = EAGAIN;
+ goto out;
+ }
+
+ hashp->hdr->nelem = dbinfo != NULL ? dbinfo->h_nelem : 0;
+ hashp->hdr->ffactor =
+ dbinfo != NULL && dbinfo->h_ffactor ? dbinfo->h_ffactor : 0;
+ __ham_init_htab(hashp);
+ if (F_ISSET(dbp, DB_AM_DUP))
+ F_SET(hashp->hdr, DB_HASH_DUP);
+ if ((ret = __ham_dirty_page(hashp, (PAGE *)hashp->hdr)) != 0)
+ goto out;
+ }
+
+ /* Initialize the default cursor. */
+ __ham_c_init(dbp, NULL, &curs);
+ TAILQ_INSERT_TAIL(&dbp->curs_queue, curs, links);
+
+ /* Allocate memory for our split buffer. */
+ if ((hashp->split_buf = (PAGE *)malloc(dbp->pgsize)) == NULL) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+#ifdef NO_STATISTICS_FOR_DB_ERR
+ __db_err(dbp->dbenv,
+ "%s%lx\n%s%ld\n%s%ld\n%s%ld\n%s%ld\n%s0x%lx\n%s0x%lx\n%s%ld\n%s%ld\n%s0x%lx",
+ "TABLE POINTER ", (long)hashp,
+ "BUCKET SIZE ", (long)hashp->hdr->pagesize,
+ "FILL FACTOR ", (long)hashp->hdr->ffactor,
+ "MAX BUCKET ", (long)hashp->hdr->max_bucket,
+ "OVFL POINT ", (long)hashp->hdr->ovfl_point,
+ "LAST FREED ", (long)hashp->hdr->last_freed,
+ "HIGH MASK ", (long)hashp->hdr->high_mask,
+ "LOW MASK ", (long)hashp->hdr->low_mask,
+ "NELEM ", (long)hashp->hdr->nelem,
+ "FLAGS ", (long)hashp->hdr->flags);
+#endif
+
+ /* Release the meta data page */
+ (void)__ham_put_page(hashp->dbp, (PAGE *)hashp->hdr, 0);
+ if (F_ISSET(dbp, DB_AM_LOCKING) &&
+ (ret = lock_put(dbenv->lk_info, hashp->hlock)) != 0) {
+ if (ret < 0)
+ ret = EAGAIN;
+ goto out;
+ }
+
+ hashp->hlock = 0;
+ hashp->hdr = NULL;
+ /* Sync the file so that we know that the meta data goes to disk. */
+ if (!file_existed && (ret = dbp->sync(dbp, 0)) != 0)
+ goto out;
+ return (0);
+
+out: (void)__ham_close(dbp);
+ return (ret);
+}
+
+/*
+ * PUBLIC: int __ham_close __P((DB *));
+ */
+int
+__ham_close(dbp)
+ DB *dbp;
+{
+ HTAB *hashp;
+ int ret, t_ret;
+
+ DEBUG_LWRITE(dbp, NULL, "ham_close", NULL, NULL, 0);
+ hashp = (HTAB *)dbp->internal;
+ ret = 0;
+
+ /* Free the split page. */
+ if (hashp->split_buf)
+ FREE(hashp->split_buf, dbp->pgsize);
+
+ if (hashp->hdr && (t_ret = __ham_put_page(hashp->dbp,
+ (PAGE *)hashp->hdr, 0)) != 0 && ret == 0)
+ ret = t_ret;
+ if (hashp->hlock && (t_ret = lock_put(hashp->dbp->dbenv->lk_info,
+ hashp->hlock)) != 0 && ret == 0)
+ ret = t_ret;
+
+ FREE(hashp, sizeof(HTAB));
+ dbp->internal = NULL;
+ return (ret);
+}
+
+/************************** LOCAL CREATION ROUTINES **********************/
+/*
+ * Returns 0 on No Error
+ */
+static void
+__ham_init_htab(hashp)
+ HTAB *hashp;
+{
+ u_int32_t nelem;
+ int32_t l2, nbuckets;
+
+ nelem = hashp->hdr->nelem;
+ hashp->hdr->pagesize = hashp->dbp->pgsize;
+ ZERO_LSN(hashp->hdr->lsn);
+ hashp->hdr->magic = DB_HASHMAGIC;
+ hashp->hdr->version = DB_HASHVERSION;
+ if (hashp->hash == NULL)
+ hashp->hash =
+ hashp->hdr->version < 5 ? __ham_func4 : __ham_func5;
+ hashp->hdr->h_charkey = hashp->hash(CHARKEY, sizeof(CHARKEY));
+ if (nelem != 0 && hashp->hdr->ffactor != 0) {
+ nelem = (nelem - 1) / hashp->hdr->ffactor + 1;
+ l2 = __db_log2(nelem > 2 ? nelem : 2);
+ } else
+ l2 = 2;
+
+ nbuckets = 1 << l2;
+
+ hashp->hdr->spares[l2] = 0;
+ hashp->hdr->spares[l2 + 1] = 0;
+ hashp->hdr->ovfl_point = l2;
+ hashp->hdr->last_freed = PGNO_INVALID;
+
+ hashp->hdr->max_bucket = hashp->hdr->high_mask = nbuckets - 1;
+ hashp->hdr->low_mask = (nbuckets >> 1) - 1;
+ memcpy(hashp->hdr->uid, hashp->dbp->lock.fileid, DB_FILE_ID_LEN);
+}
+
+/********************** DESTROY/CLOSE ROUTINES ************************/
+
+
+/*
+ * Write modified pages to disk
+ *
+ * Returns:
+ * 0 == OK
+ * -1 ERROR
+ */
+static int
+__ham_sync(dbp, flags)
+ DB *dbp;
+ int flags;
+{
+ int ret;
+
+ DEBUG_LWRITE(dbp, NULL, "ham_sync", NULL, NULL, flags);
+ if ((ret = __db_syncchk(dbp, flags)) != 0)
+ return (ret);
+ if (F_ISSET(dbp, DB_AM_RDONLY))
+ return (0);
+
+ if ((ret = memp_fsync(dbp->mpf)) == DB_INCOMPLETE)
+ ret = 0;
+
+ return (ret);
+}
+
+/*******************************SEARCH ROUTINES *****************************/
+/*
+ * All the access routines return
+ *
+ * Returns:
+ * 0 on SUCCESS
+ * 1 to indicate an external ERROR (i.e. key not found, etc)
+ * -1 to indicate an internal ERROR (i.e. out of memory, etc)
+ */
+
+static int
+__ham_get(dbp, txn, key, data, flags)
+ DB *dbp;
+ DB_TXN *txn;
+ DBT *key;
+ DBT *data;
+ int flags;
+{
+ DB *ldbp;
+ DBC *cp;
+ HTAB *hashp;
+ HASH_CURSOR *hcp;
+ int ret, t_ret;
+
+ DEBUG_LREAD(dbp, txn, "ham_get", key, NULL, flags);
+ if ((ret = __db_getchk(dbp, key, data, flags)) != 0)
+ return (ret);
+
+ ldbp = dbp;
+ if (F_ISSET(dbp, DB_AM_THREAD) &&
+ (ret = __db_gethandle(dbp, __ham_hdup, &ldbp)) != 0)
+ return (ret);
+
+ hashp = (HTAB *)ldbp->internal;
+ SET_LOCKER(ldbp, txn);
+ GET_META(ldbp, hashp);
+ cp = TAILQ_FIRST(&ldbp->curs_queue);
+
+ hashp->hash_accesses++;
+ hcp = (HASH_CURSOR *)TAILQ_FIRST(&ldbp->curs_queue)->internal;
+ if ((ret = __ham_lookup(hashp, hcp, key, 0, DB_LOCK_READ)) == 0)
+ if (F_ISSET(hcp, H_OK))
+ ret = __ham_dup_return(hashp, hcp, data, DB_FIRST);
+ else /* Key was not found */
+ ret = DB_NOTFOUND;
+
+ if ((t_ret = __ham_item_done(hashp, hcp, 0)) != 0 && ret == 0)
+ ret = t_ret;
+ RELEASE_META(ldbp, hashp);
+ if (F_ISSET(dbp, DB_AM_THREAD))
+ __db_puthandle(ldbp);
+ return (ret);
+}
+
+static int
+__ham_put(dbp, txn, key, data, flags)
+ DB *dbp;
+ DB_TXN *txn;
+ DBT *key;
+ DBT *data;
+ int flags;
+{
+ DB *ldbp;
+ HTAB *hashp;
+ HASH_CURSOR *hcp;
+ DBT tmp_val, *myval;
+ int ret, t_ret;
+ u_int32_t nbytes;
+
+ DEBUG_LWRITE(dbp, txn, "ham_put", key, data, flags);
+ if ((ret = __db_putchk(dbp, key, data,
+ flags, F_ISSET(dbp, DB_AM_RDONLY), F_ISSET(dbp, DB_AM_DUP))) != 0)
+ return (ret);
+
+ ldbp = dbp;
+ if (F_ISSET(dbp, DB_AM_THREAD) &&
+ (ret = __db_gethandle(dbp, __ham_hdup, &ldbp)) != 0)
+ return (ret);
+
+ hashp = (HTAB *)ldbp->internal;
+ SET_LOCKER(ldbp, txn);
+ GET_META(ldbp, hashp);
+ hcp = TAILQ_FIRST(&ldbp->curs_queue)->internal;
+
+ nbytes = (ISBIG(hashp, key->size) ? HOFFPAGE_PSIZE :
+ HKEYDATA_PSIZE(key->size)) +
+ (ISBIG(hashp, data->size) ? HOFFPAGE_PSIZE :
+ HKEYDATA_PSIZE(data->size));
+
+ hashp->hash_accesses++;
+ ret = __ham_lookup(hashp, hcp, key, nbytes, DB_LOCK_WRITE);
+
+ if (ret == DB_NOTFOUND) {
+ ret = 0;
+ if (hcp->seek_found_page != PGNO_INVALID &&
+ hcp->seek_found_page != hcp->pgno) {
+ if ((ret = __ham_item_done(hashp, hcp, 0)) != 0)
+ goto out;
+ hcp->pgno = hcp->seek_found_page;
+ hcp->bndx = NDX_INVALID;
+ }
+
+ if (F_ISSET(data, DB_DBT_PARTIAL) && data->doff != 0) {
+ /*
+ * Doing a partial put, but the key does not exist
+ * and we are not beginning the write at 0. We
+ * must create a data item padded up to doff and
+ * then write the new bytes represented by val.
+ */
+ ret = __ham_init_dbt(&tmp_val, data->size + data->doff,
+ &hcp->big_data, &hcp->big_datalen);
+ if (ret == 0) {
+ memset(tmp_val.data, 0, data->doff);
+ memcpy((u_int8_t *)tmp_val.data + data->doff,
+ data->data, data->size);
+ myval = &tmp_val;
+ }
+ } else
+ myval = (DBT *)data;
+
+ if (ret == 0)
+ ret = __ham_add_el(hashp, hcp, key, myval, H_KEYDATA);
+ } else if (ret == 0 && F_ISSET(hcp, H_OK)) {
+ if (flags == DB_NOOVERWRITE)
+ ret = DB_KEYEXIST;
+ else if (F_ISSET(ldbp, DB_AM_DUP))
+ ret = __ham_add_dup(hashp, hcp, data, DB_KEYLAST);
+ else
+ ret = __ham_overwrite(hashp, hcp, data);
+ }
+
+ /* Free up all the cursor pages. */
+ if ((t_ret = __ham_item_done(hashp, hcp, ret == 0)) != 0 && ret == 0)
+ ret = t_ret;
+ /* Now check if we have to grow. */
+out: if (ret == 0 && F_ISSET(hcp, H_EXPAND)) {
+ ret = __ham_expand_table(hashp);
+ F_CLR(hcp, H_EXPAND);
+ }
+
+ if ((t_ret = __ham_item_done(hashp, hcp, ret == 0)) != 0 && ret == 0)
+ ret = t_ret;
+ RELEASE_META(ldbp, hashp);
+ if (F_ISSET(dbp, DB_AM_THREAD))
+ __db_puthandle(ldbp);
+ return (ret);
+}
+
+static int
+__ham_cursor(dbp, txnid, dbcp)
+ DB *dbp;
+ DB_TXN *txnid;
+ DBC **dbcp;
+{
+ int ret;
+
+ DEBUG_LWRITE(dbp, txnid, "ham_cursor", NULL, NULL, 0);
+ if ((ret = __ham_c_init(dbp, txnid, dbcp)) != 0)
+ return (ret);
+
+ DB_THREAD_LOCK(dbp);
+ TAILQ_INSERT_TAIL(&dbp->curs_queue, *dbcp, links);
+ DB_THREAD_UNLOCK(dbp);
+ return (ret);
+}
+
+static int
+__ham_c_init(dbp, txnid, dbcp)
+ DB *dbp;
+ DB_TXN *txnid;
+ DBC **dbcp;
+{
+ DBC *db_curs;
+ HASH_CURSOR *new_curs;
+