about summary refs log tree commit diff
path: root/db2/hash/hash.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1997-11-12 00:06:02 +0000
committerUlrich Drepper <drepper@redhat.com>1997-11-12 00:06:02 +0000
commitcc3fa755128c70f8afc2d604936f33e4d7d652d8 (patch)
tree0c68c1298140e1524078e8bfdf5154fb6129b680 /db2/hash/hash.c
parent86187531d302de284b67ac162cf76c60c86bd7da (diff)
downloadglibc-cc3fa755128c70f8afc2d604936f33e4d7d652d8.tar.gz
glibc-cc3fa755128c70f8afc2d604936f33e4d7d652d8.tar.xz
glibc-cc3fa755128c70f8afc2d604936f33e4d7d652d8.zip
1997-11-11 21:30  Ulrich Drepper  <drepper@cygnus.com>

	* include/sys/stat.h: Define stat, fstat, lstat and *64 variants
	as macros so the the library compiles correctly even without
	optimization.
	* io/fstat.c: Undef fstat.
	* io/fstat64.c: Undef fstat64
	* io/lstat.c: Undef lstat.
	* io/lstat64.c: Undef lstat64
	* io/stat.c: Undef stat.
	* io/stat64.c: Undef stat64
	* io/fts.c: Include <include/sys/stat.h> to get macro definitions.
	* io/ftw.c: Likewise.
	* io/getdirname.c: Likewise.

	* Makefile (install): Run test-installation.pl if possible.

	* db2/Makefile: Update from db-2.3.12.
	* db2/db.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/btree/bt_cursor.c: Likewise.
	* db2/btree/bt_delete.c: Likewise.
	* db2/btree/bt_open.c: Likewise.
	* db2/btree/bt_put.c: Likewise.
	* db2/btree/bt_rec.c: Likewise.
	* db2/btree/bt_recno.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/btree/btree_auto.c: Likewise.
	* db2/btree/bt_cursor.c: Likewise.
	* db2/btree/bt_delete.c: Likewise.
	* db2/btree/bt_open.c: Likewise.
	* db2/btree/bt_put.c: Likewise.
	* db2/btree/bt_rec.c: Likewise.
	* db2/btree/bt_recno.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/btree/btree_auto.c: Likewise.
	* db2/common/db_appinit.c: Likewise.
	* db2/common/db_apprec.c: Likewise.
	* db2/common/db_byteorder.c: Likewise.
	* db2/common/db_region.c: Likewise.
	* db2/db/db.c: Likewise
	* db2/db/db.src: Likewise
	* db2/db/db_auto.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/db185/db185.c: Likewise.
	* db2/hash/hash.c: Likewise.
	* db2/hash/hash.src: Likewise.
	* db2/hash/hash_auto.c: Likewise.
	* db2/hash/hash_dup.c: Likewise.
	* db2/hash/hash_page.c: Likewise.
	* db2/hash/hash_rec.c: Likewise.
	* db2/include/btree_auto.h: Likewise.
	* db2/include/btree_ext.h: Likewise.
	* db2/include/clib_ext.h: Likewise.
	* db2/include/common_ext.h: Likewise.
	* db2/include/db.h.src: Likewise.
	* db2/include/db_am.h: Likewise.
	* db2/include/db_auto.h: Likewise.
	* db2/include/db_cxx.h: Likewise.
	* db2/include/db_ext.h: Likewise.
	* db2/include/db_int.h.src: Likewise.
	* db2/include/hash.h: Likewise.
	* db2/include/hash_auto.h: Likewise.
	* db2/include/hash_ext.h: Likewise.
	* db2/include/lock.h: Likewise.
	* db2/include/lock_ext.h: Likewise.
	* db2/include/log.h: Likewise.
	* db2/include/log_ext.h: Likewise.
	* db2/include/mp.h: Likewise.
	* db2/include/mp_ext.h: Likewise.
	* db2/include/mutex_ext.h: Likewise.
	* db2/include/os_ext.h: Likewise.
	* db2/include/os_func.h: Likewise.
	* db2/include/txn.h: Likewise.
	* db2/include/txn_ext.h: Likewise.
	* db2/lock/lock.c: Likewise.
	* db2/lock/lock_deadlock.c: Likewise.
	* db2/log/log.c: Likewise.
	* db2/log/log_archive.c: Likewise.
	* db2/log/log_auto.c: Likewise.
	* db2/log/log_findckp.c: Likewise.
	* db2/log/log_get.c: Likewise.
	* db2/log/log_put.c: Likewise.
	* db2/log/log_rec.c: Likewise.
	* db2/log/log_register.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_pr.c: Likewise.
	* db2/mp/mp_region.c: Likewise.
	* db2/mp/mp_sync.c: Likewise.
	* db2/mutex/mutex.c: Likewise.
	* db2/os/os_abs.c: Likewise.
	* db2/os/os_dir.c: Likewise.
	* db2/os/os_fid.c: Likewise.
	* db2/os/os_fsync.c: Likewise.
	* db2/os/os_func.c: Likewise.
	* db2/os/os_map.c: Likewise.
	* db2/os/os_oflags.c: Likewise.
	* db2/os/os_open.c: Likewise.
	* db2/os/os_rpath.c: Likewise.
	* db2/os/os_rw.c: Likewise.
	* db2/os/os_seek.c: Likewise.
	* db2/os/os_sleep.c: Likewise.
	* db2/os/os_stat.c: Likewise.
	* db2/os/os_unlink.c: Likewise.
	* db2/progs/db_deadlock/db_deadlock.c: Likewise.
	* db2/progs/db_dump/db_dump.c: Likewise.
	* db2/progs/db_load/db_load.c: Likewise.
	* db2/progs/db_recover/db_recover.c: Likewise.
	* db2/progs/db_stat/db_stat.c: Likewise.
	* db2/txn/txn.c: Likewise.
	* db2/txn/txn_auto.c: Likewise.
	* db2/txn/txn_rec.c: Likewise.
	* db2/os/db_os_abs.c: Removed.
	* db2/os/db_os_dir.c: Removed.
	* db2/os/db_os_fid.c: Removed.
	* db2/os/db_os_lseek.c: Removed.
	* db2/os/db_os_mmap.c: Removed.
	* db2/os/db_os_open.c: Removed.
	* db2/os/db_os_rw.c: Removed.
	* db2/os/db_os_sleep.c: Removed.
	* db2/os/db_os_stat.c: Removed.
	* db2/os/db_os_unlink.c: Removed.

	* libio/stdio.h (fopen): Add __restrict to parameters.

	* manual/process.texi (system): Describe behaviour for NULL argument.

	* stdio-common/printf-parse.h: Parse hh modifier.
	* stdio-common/vfprintf.c: Handle hh modifier.
	* stdio-common/vfscanf.c: Likewise.
	* manual/stdio.texi: Describe hh modifier for scanf/printf.

	* math/complex.h: Don't define _Imaginary_I, but instead _Complex_I.
	gcc does no yet know the `imaginary' keyword.

	* math/test-math.c: Add little test for know gcc bug.

	* math/tgmath.h: Make complex versions of log10() only available
	if __USE_GNU.

	* stdlib/test-canon.c: Fix typo.

	* sysdeps/generic/setenv.c: Avoid compilation warnings.
	Reported by Jim Meyering.

	* sysdeps/generic/bits/errno.h: EILSEQ is an ISO C error number.
	* sysdeps/mach/hurd/bits/errno.h: Likewise.
	* sysdeps/standalone/bits/errno.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/errno.h: Likewise.

	* sysdeps/i386/i586/memcpy.S: New file.
	* sysdeps/i386/i586/mempcpy.S: New file.

	* sysdeps/i386/i586/memset.S: Fix typo.

	* sysdeps/posix/getcwd.c: Define HAVE_MEMPCPY for _LIBC.  Add casts.

	* sysdeps/posix/system.c: Add comment to explain code.

	* sysdeps/wordsize-32/inttypes.h: Include <stddef.h> for wchar_t.
	Define PTRDIFF_{MIN,MAX}, SIG_ATOMIC_{MIN,MAX}, SIZE_MAX,
	WCHAR_{MIN,MAX}, WINT_{MIN,MAX}.
	Define wcstoimax, wcstoumax.
	* sysdeps/wordsize-64/inttypes.h: Likewise.

	* wcsmbs/wchar.h: Define WCHAR_{MIN,MAX} if not already defined.
	Declare __wcsto{l,ul,ll,ull}_internal only if not already done.

	* time/Makefile (routines): Add strfxtime.
	* time/strftime.c: Implement %F and %f format.
	* time/strfxtime.c: New file.
	* time/time.h: Define new types and symbols from ISO C 9X.

	* time/mktime.c: Little comment correction.

1997-11-10  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/libm-ieee754/s_sincosl.c: Fix typo.

	* sysdeps/libm-ieee754/s_tanl.c: Fix typo.

	* sysdeps/libm-ieee754/s_floorl.c: Correct typos.

	* sysdeps/libm-ieee754/e_remainderl.c: Replace
	EXTRACT_LDOUBLE_WORDS by GET_LDOUBLE_WORDS.

	* sysdeps/libm-ieee754/e_atan2l.c: Replace EXTRACT_LDOUBLE_WORDS
	by GET_LDOUBLE_WORDS.

	* sysdeps/libm-ieee754/s_scalbnl.c: Replace ";" by "," for correct
	variable declaration.
	* sysdeps/libm-ieee754/s_scalblnl.c: Likewise.

	* sysdeps/libm-ieee754/s_lrint.c (__lrint): Correct function.

	* math/libm-test.c (sqrt_test): Add test for sqrt (0.25).
	(asin_test): Add more test.

1997-11-10 23:34  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-ieee754/e_asin.c: Add braces to make code clearer
	and to not confuse the poor compiler.
	* sysdeps/libm-ieee754/e_asinf.c: Likewise.
	Reported by vertex@cagent.com.

1997-11-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/dl-lookup.c (do_lookup): Don't accept the base version if we
	require a specific one.

	* libio/oldfreopen.c: Bind old symbols to version GLIBC_2.0.
	* libio/oldiofopen.c: Likewise.
	* libio/oldstdfiles.c: Likewise.
	* libc.map: Export them.

1997-11-10 07:40  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* stdlib/exit.c (exit): Handle recursive calls to exit ().

1997-11-09  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/fpu/s_llrint.c: Fixed to take double argument
	instead of long double.
	* sysdeps/m68k/fpu/s_llrintf.c: New file.
	* sysdeps/m68k/fpu/s_llrintl.c: New file.

	* sysdeps/libm-ieee754/s_llrint.c: Make compilable and fix
	overflow condition.
	* sysdeps/libm-ieee754/s_llrintf.c: Fix overflow condition.
	* sysdeps/libm-ieee754/s_llrintl.c: Likewise.
	* sysdeps/libm-ieee754/s_llround.c: Likewise.
	* sysdeps/libm-ieee754/s_llroundf.c: Likewise.
	* sysdeps/libm-ieee754/s_llroundl.c: Likewise.
	* sysdeps/libm-ieee754/s_lrint.c: Likewise.
	* sysdeps/libm-ieee754/s_lrintf.c: Likewise.
	* sysdeps/libm-ieee754/s_lrintl.c: Likewise.
	* sysdeps/libm-ieee754/s_lround.c: Likewise.
	* sysdeps/libm-ieee754/s_lroundf.c: Likewise.
	* sysdeps/libm-ieee754/s_lroundl.c: Likewise.

	* math/libm-test.c: Test all three variants of lrint and llrint.
	Fix typos in lround and llround tests.  Add tests for boundary
	cases for lrint and llround.

1997-11-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/arith.texi: Misc doc fixes.
	* manual/ctype.texi: Likewise.
	* manual/pattern.texi: Likewise.
	* manual/terminal.texi: Likewise.

1997-11-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/xstatconv.c: Use struct assignment
	instead of memcpy to let the compiler use whatever it regards as
	optimal.
	* sysdeps/unix/sysv/linux/alpha/xstatconv.c: Likewise.

1997-11-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers)
	[$(subdir)=misc]: Add sys/prctl.h.
	* sysdeps/unix/sysv/linux/Dist: Distribute it.

1997-11-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* io/ftwtest-sh: Don't use the unknown which command, instead try
	pwd as /bin/pwd and /usr/bin/pwd.

1997-11-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/maint.texi (Tools for Installation): Don't recommend
	broken version 3.76.1 of make.
	(Porting): Fix wording.

1997-11-06 06:13  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* config.make.in (build-pic-default): New, defined with
	pic_default.

	* configure.in (pic_default): New, set to yes if PIC is
	default.

	* Makeconfig (CPPFLAGS-.o, CPPFLAGS-.op, CPPFLAGS-.og,
	CPPFLAGS-.ob): Add -DPIC if $(build-pic-default) is yes.

1997-11-09 18:15  Ulrich Drepper  <drepper@cygnus.com>

	* Makerules (libc.so): Fix typo.

	* csu/Makefile (CFLAGS-initfini.s): Correctly fix moving function
	definition.  Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>.

	* stdlib/strtod.c: Handle numbers like 0.0e10000 correctly which
	produce ±0.0.  Reported by Joe Keane <jgk@jgk.org>.

	* sysdeps/libm-ieee754/s_ceill.c: Fix typos.
	* sysdeps/libm-ieee754/s_llrint.c: Correct code, it never worked.

1997-11-06 07:00  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/unix/sysv/i386/i686/time.S: Removed.

1997-11-08 14:07  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/libnsl.map: Add __do_niscall2 for nis_cachemgr.

	* nis/nis_call.c: Set UDP resend timeout correct.

	* nis/nss_compat/compat-grp.c: Rewritten to make it faster.
	* nis/nss_compat/compat-pwd.c: Likewise.
	* nis/nss_compat/compat-spwd.c: Likewise.
	* nis/ypclnt.c: Fix UDP resend timeout, fix yp_bind/do_ypcall
	interaction.

	* inet/protocols/routed.h: Include sys/socket.h.
	* inet/protocols/talkd.h: Likewise.
	* inet/protocols/timed.h: Include rpc/types.h.
	* sunrpc/rpc/pmap_clnt.h: Include rpc/clnt.h.

1997-11-06 01:39  Ulrich Drepper  <drepper@cygnus.com>

	* Makerules (libc.so): Add missing closing brace.

1997-11-05  Brendan Kehoe  <brendan@lisa.cygnus.com>

	* libio.h (__P): Name its arg `p' instead of `params'.
	This was added solely to work around problems with
	the definition of __P in the Solaris math.h header.
Diffstat (limited to 'db2/hash/hash.c')
-rw-r--r--db2/hash/hash.c135
1 files changed, 83 insertions, 52 deletions
diff --git a/db2/hash/hash.c b/db2/hash/hash.c
index d986e08087..c08495378e 100644
--- a/db2/hash/hash.c
+++ b/db2/hash/hash.c
@@ -47,7 +47,7 @@
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)hash.c	10.27 (Sleepycat) 9/15/97";
+static const char sccsid[] = "@(#)hash.c	10.33 (Sleepycat) 11/2/97";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -79,7 +79,7 @@ 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 void __ham_init_htab __P((HTAB *, u_int));
 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 *));
@@ -106,7 +106,7 @@ __ham_open(dbp, dbinfo)
 
 	dbenv = dbp->dbenv;
 
-	if ((hashp = (HTAB *)calloc(1, sizeof(HTAB))) == NULL)
+	if ((hashp = (HTAB *)__db_calloc(1, sizeof(HTAB))) == NULL)
 		return (ENOMEM);
 	hashp->dbp = dbp;
 
@@ -175,10 +175,9 @@ __ham_open(dbp, dbinfo)
 			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);
+		__ham_init_htab(hashp, dbinfo != NULL ? dbinfo->h_nelem : 0);
 		if (F_ISSET(dbp, DB_AM_DUP))
 			F_SET(hashp->hdr, DB_HASH_DUP);
 		if ((ret = __ham_dirty_page(hashp, (PAGE *)hashp->hdr)) != 0)
@@ -190,7 +189,7 @@ __ham_open(dbp, dbinfo)
 	TAILQ_INSERT_TAIL(&dbp->curs_queue, curs, links);
 
 	/* Allocate memory for our split buffer. */
-	if ((hashp->split_buf = (PAGE *)malloc(dbp->pgsize)) == NULL) {
+	if ((hashp->split_buf = (PAGE *)__db_malloc(dbp->pgsize)) == NULL) {
 		ret = ENOMEM;
 		goto out;
 	}
@@ -265,13 +264,13 @@ __ham_close(dbp)
  * Returns 0 on No Error
  */
 static void
-__ham_init_htab(hashp)
+__ham_init_htab(hashp, nelem)
 	HTAB *hashp;
+	u_int nelem;
 {
-	u_int32_t nelem;
 	int32_t l2, nbuckets;
 
-	nelem = hashp->hdr->nelem;
+	hashp->hdr->nelem = 0;
 	hashp->hdr->pagesize = hashp->dbp->pgsize;
 	ZERO_LSN(hashp->hdr->lsn);
 	hashp->hdr->magic = DB_HASHMAGIC;
@@ -502,11 +501,11 @@ __ham_c_init(dbp, txnid, dbcp)
 	DBC *db_curs;
 	HASH_CURSOR *new_curs;
 
-	if ((db_curs = (DBC *)calloc(sizeof(DBC), 1)) == NULL)
+	if ((db_curs = (DBC *)__db_calloc(sizeof(DBC), 1)) == NULL)
 		return (ENOMEM);
 
 	if ((new_curs =
-	    (HASH_CURSOR *)calloc(sizeof(struct cursor_t), 1)) == NULL) {
+	    (HASH_CURSOR *)__db_calloc(sizeof(struct cursor_t), 1)) == NULL) {
 		FREE(db_curs, sizeof(DBC));
 		return (ENOMEM);
 	}
@@ -555,7 +554,7 @@ __ham_delete(dbp, txn, key, flags)
 	hashp->hash_accesses++;
 	if ((ret = __ham_lookup(hashp, hcp, key, 0, DB_LOCK_WRITE)) == 0)
 		if (F_ISSET(hcp, H_OK))
-			ret = __ham_del_pair(hashp, hcp);
+			ret = __ham_del_pair(hashp, hcp, 1);
 		else
 			ret = DB_NOTFOUND;
 
@@ -669,30 +668,41 @@ __ham_c_del(cursor, flags)
 	if ((ret = __ham_get_cpage(hashp, hcp, DB_LOCK_WRITE)) != 0)
 		goto out;
 	if (F_ISSET(hcp, H_ISDUP) && hcp->dpgno != PGNO_INVALID) {
-		ppgno = PREV_PGNO(hcp->dpagep);
-
-		/* Remove item from duplicate page. */
-		chg_pgno = hcp->dpgno;
-		if ((ret = __db_drem(hashp->dbp,
-		    &hcp->dpagep, hcp->dndx, __ham_del_page)) != 0)
-			goto out;
-
 		/*
+		 * We are about to remove a duplicate from offpage.
+		 *
 		 * There are 4 cases.
-		 * 1. We removed an item on a page, but nothing else changed.
-		 * 2. We removed the last item on a page, but there is a
+		 * 1. We will remove an item on a page, but there are more
+		 *    items on that page.
+		 * 2. We will remove the last item on a page, but there is a
 		 *    following page of duplicates.
-		 * 3. We removed the last item on a page, this page was the
+		 * 3. We will remove the last item on a page, this page was the
 		 *    last page in a duplicate set, but there were dups before
 		 *    it.
-		 * 4. We removed the last item on a page, removing the last
+		 * 4. We will remove the last item on a page, removing the last
 		 *    duplicate.
 		 * In case 1 hcp->dpagep is unchanged.
 		 * In case 2 hcp->dpagep comes back pointing to the next dup
 		 *     page.
 		 * In case 3 hcp->dpagep comes back NULL.
 		 * In case 4 hcp->dpagep comes back NULL.
+		 *
+		 * Case 4 results in deleting the pair off the master page.
+		 * The normal code for doing this knows how to delete the
+		 * duplicates, so we will handle this case in the normal code.
 		 */
+		ppgno = PREV_PGNO(hcp->dpagep);
+		if (ppgno == PGNO_INVALID &&
+		    NEXT_PGNO(hcp->dpagep) == PGNO_INVALID &&
+		    NUM_ENT(hcp->dpagep) == 1)
+			goto normal;
+
+		/* Remove item from duplicate page. */
+		chg_pgno = hcp->dpgno;
+		if ((ret = __db_drem(hashp->dbp,
+		    &hcp->dpagep, hcp->dndx, __ham_del_page)) != 0)
+			goto out;
+
 		if (hcp->dpagep == NULL) {
 			if (ppgno != PGNO_INVALID) {		/* Case 3 */
 				hcp->dpgno = ppgno;
@@ -702,7 +712,7 @@ __ham_c_del(cursor, flags)
 				hcp->dndx = NUM_ENT(hcp->dpagep);
 				F_SET(hcp, H_DELETED);
 			} else {				/* Case 4 */
-				ret = __ham_del_pair(hashp, hcp);
+				ret = __ham_del_pair(hashp, hcp, 1);
 				hcp->dpgno = PGNO_INVALID;
 				/*
 				 * Delpair updated the cursor queue, so we
@@ -718,14 +728,14 @@ __ham_c_del(cursor, flags)
 				    H_DATAINDEX(hcp->bndx))),
 				    &hcp->dpgno, sizeof(db_pgno_t));
 			F_SET(hcp, H_DELETED);
-		} else					/* Case 1 */
+		} else						/* Case 1 */
 			F_SET(hcp, H_DELETED);
 		if (chg_pgno != PGNO_INVALID)
 			__ham_c_update(hashp, hcp, chg_pgno, 0, 0, 1);
 	} else if (F_ISSET(hcp, H_ISDUP)) {			/* on page */
 		if (hcp->dup_off == 0 && DUP_SIZE(hcp->dup_len) ==
 		    LEN_HDATA(hcp->pagep, hashp->hdr->pagesize, hcp->bndx))
-			ret = __ham_del_pair(hashp, hcp);
+			ret = __ham_del_pair(hashp, hcp, 1);
 		else {
 			DBT repldbt;
 
@@ -736,14 +746,14 @@ __ham_c_del(cursor, flags)
 			repldbt.size = 0;
 			ret = __ham_replpair(hashp, hcp, &repldbt, 0);
 			hcp->dup_tlen -= DUP_SIZE(hcp->dup_len);
+			F_SET(hcp, H_DELETED);
 			__ham_c_update(hashp, hcp, hcp->pgno,
 			    DUP_SIZE(hcp->dup_len), 0, 1);
-			F_SET(hcp, H_DELETED);
 		}
 
 	} else
 		/* Not a duplicate */
-		ret = __ham_del_pair(hashp, hcp);
+normal:		ret = __ham_del_pair(hashp, hcp, 1);
 
 out:	if ((t_ret = __ham_item_done(hashp, hcp, ret == 0)) != 0 && ret == 0)
 		t_ret = ret;
@@ -975,8 +985,8 @@ int
 __ham_expand_table(hashp)
 	HTAB *hashp;
 {
-	u_int32_t old_bucket, new_bucket;
-	u_int32_t spare_ndx;
+	DB_LSN new_lsn;
+	u_int32_t old_bucket, new_bucket, spare_ndx;
 	int ret;
 
 	ret = 0;
@@ -984,9 +994,30 @@ __ham_expand_table(hashp)
 	if (ret)
 		return (ret);
 
-	if (DB_LOGGING(hashp->dbp)) {
-		DB_LSN new_lsn;
+	/*
+	 * If the split point is about to increase, make sure that we
+	 * have enough extra pages.  The calculation here is weird.
+	 * We'd like to do this after we've upped max_bucket, but it's
+	 * too late then because we've logged the meta-data split.  What
+	 * we'll do between then and now is increment max bucket and then
+	 * see what the log of one greater than that is; here we have to
+	 * look at the log of max + 2.  VERY NASTY STUFF.
+	 */
+	if (__db_log2(hashp->hdr->max_bucket + 2) > hashp->hdr->ovfl_point) {
+		/*
+		 * We are about to shift the split point.  Make sure that
+		 * if the next doubling is going to be big (more than 8
+		 * pages), we have some extra pages around.
+		 */
+		if (hashp->hdr->max_bucket + 1 >= 8 && 
+		    hashp->hdr->spares[hashp->hdr->ovfl_point] <
+		    hashp->hdr->spares[hashp->hdr->ovfl_point - 1] + 
+		    hashp->hdr->ovfl_point + 1)
+			__ham_init_ovflpages(hashp);
+	}
 
+	/* Now we can log the meta-data split. */
+	if (DB_LOGGING(hashp->dbp)) {
 		if ((ret = __ham_splitmeta_log(hashp->dbp->dbenv->lg_info,
 		    (DB_TXN *)hashp->dbp->txn, &new_lsn, 0,
 		    hashp->dbp->log_fileid,
@@ -1003,22 +1034,11 @@ __ham_expand_table(hashp)
 	old_bucket = (hashp->hdr->max_bucket & hashp->hdr->low_mask);
 
 	/*
-	 * If the split point is increasing (hdr.max_bucket's log base 2
-	 * increases), max sure that we have enough extra pages, then
-	 * copy the current contents of the spare split bucket to the
-	 * next bucket.
+	 * If the split point is increasing, copy the current contents
+	 * of the spare split bucket to the next bucket.
 	 */
 	spare_ndx = __db_log2(hashp->hdr->max_bucket + 1);
 	if (spare_ndx > hashp->hdr->ovfl_point) {
-		/*
-		 * We are about to shift the split point.  Make sure that
-		 * if the next doubling is going to be big (more than 8
-		 * pages), we have some extra pages around.
-		 */
-		if (hashp->hdr->spares[hashp->hdr->ovfl_point] == 0 &&
-		    new_bucket >= 8)
-			__ham_init_ovflpages(hashp);
-
 		hashp->hdr->spares[spare_ndx] =
 		    hashp->hdr->spares[hashp->hdr->ovfl_point];
 		hashp->hdr->ovfl_point = spare_ndx;
@@ -1306,7 +1326,7 @@ __ham_init_dbt(dbt, size, bufp, sizep)
 	memset(dbt, 0, sizeof(*dbt));
 	if (*sizep < size) {
 		if ((*bufp = (void *)(*bufp == NULL ?
-		    malloc(size) : realloc(*bufp, size))) == NULL) {
+		    __db_malloc(size) : __db_realloc(*bufp, size))) == NULL) {
 			*sizep = 0;
 			return (ENOMEM);
 		}
@@ -1352,9 +1372,20 @@ __ham_c_update(hashp, hcp, chg_pgno, len, add, dup)
 	if (!dup && add)
 		return;
 
-	page_deleted = chg_pgno != PGNO_INVALID &&
-	    ((!dup && chg_pgno != hcp->pgno) ||
-	    (dup && chg_pgno != hcp->dpgno));
+	/*
+	 * Determine if a page was deleted.    If this is a regular update
+	 * (i.e., not dup) then the deleted page's number will be that in
+	 * chg_pgno, and the pgno in the cursor will be different.  If this
+	 * was an onpage-duplicate, then the same conditions apply.  If this
+	 * was an off-page duplicate, then we need to verify if hcp->dpgno
+	 * is the same (no delete) or different (delete) than chg_pgno.
+	 */
+	if (!dup || hcp->dpgno == PGNO_INVALID)
+		page_deleted =
+		    chg_pgno != PGNO_INVALID && chg_pgno != hcp->pgno;
+	else
+		page_deleted =
+		    chg_pgno != PGNO_INVALID && chg_pgno != hcp->dpgno;
 
 	hp = hcp->db_cursor->dbp->master->internal;
 	DB_THREAD_LOCK(hp->dbp);
@@ -1432,7 +1463,7 @@ __ham_hdup(orig, new)
 	DBC *curs;
 	int ret;
 
-	if ((hashp = (HTAB *)malloc(sizeof(HTAB))) == NULL)
+	if ((hashp = (HTAB *)__db_malloc(sizeof(HTAB))) == NULL)
 		return (ENOMEM);
 
 	new->internal = hashp;
@@ -1441,7 +1472,7 @@ __ham_hdup(orig, new)
 	hashp->hlock = 0;
 	hashp->hdr = NULL;
 	hashp->hash = ((HTAB *)orig->internal)->hash;
-	if ((hashp->split_buf = (PAGE *)malloc(orig->pgsize)) == NULL)
+	if ((hashp->split_buf = (PAGE *)__db_malloc(orig->pgsize)) == NULL)
 		return (ENOMEM);
 	hashp->local_errno = 0;
 	hashp->hash_accesses = 0;