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authorUlrich Drepper <drepper@redhat.com>1998-06-09 15:16:55 +0000
committerUlrich Drepper <drepper@redhat.com>1998-06-09 15:16:55 +0000
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treeda3583de3a0b5892f90a4b1eb773a87b554ae37e /db2/include/btree.h
parent7646e67e6cc4c738a7b402c60fed39d52db0433b (diff)
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Update.
1998-06-09 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/netinet/ip.h (struct ip_options): Define __data member only for gcc. Reported by ak@muc.de. * misc/mntent.h: Undo last patch. * sysdeps/unix/sysv/linux/fstatvfs.c (fstatvfs): Undo last patch. * misc/tst/mntent.c: Adjust code for this change. * io/fts.c: Updated from a slightly more recent BSD version. * io/fts.h: Likewise. * libc.map: Add __libc_stack_end. * db2/Makefile (routines): Add lock_region. * db2/config.h: Update from db-2.4.14. * db2/db.h: Likewise. * db2/db_185.h: Likewise. * db2/db_int.h: Likewise. * db2/bt_close.c: Likewise. * db2/bt_compare.c: Likewise. * db2/bt_conv.c: Likewise. * db2/bt_cursor.c: Likewise. * db2/bt_delete.c: Likewise. * db2/bt_open.c: Likewise. * db2/bt_page.c: Likewise. * db2/bt_put.c: Likewise. * db2/bt_rec.c: Likewise. * db2/bt_recno.c: Likewise. * db2/bt_rsearch.c: Likewise. * db2/bt_search.c: Likewise. * db2/bt_split.c: Likewise. * db2/bt_stat.c: Likewise. * db2/btree.src: Likewise. * db2/btree_auto.c: Likewise. * db2/getlong.c: Likewise. * db2/db_appinit.c: Likewise. * db2/db_apprec.c: Likewise. * db2/db_byteorder.c: Likewise. * db2/db_err.c: Likewise. * db2/db_log2.c: Likewise. * db2/db_region.c: Likewise. * db2/db_salloc.c: Likewise. * db2/db_shash.c: Likewise. * db2/db.c: Likewise. * db2/db.src: Likewise. * db2/db_auto.c: Likewise. * db2/db_conv.c: Likewise. * db2/db_dispatch.c: Likewise. * db2/db_dup.c: Likewise. * db2/db_overflow.c: Likewise. * db2/db_pr.c: Likewise. * db2/db_rec.c: Likewise. * db2/db_ret.c: Likewise. * db2/db_thread.c: Likewise. * db2/db185.c: Likewise. * db2/db185_int.h: Likewise. * db2/dbm.c: Likewise. * db2/hash.c: Likewise. * db2/hash.src: Likewise. * db2/hash_auto.c: Likewise. * db2/hash_conv.c: Likewise. * db2/hash_debug.c: Likewise. * db2/hash_dup.c: Likewise. * db2/hash_func.c: Likewise. * db2/hash_page.c: Likewise. * db2/hash_rec.c: Likewise. * db2/hash_stat.c: Likewise. * db2/btree.h: Likewise. * db2/btree_ext.h: Likewise. * db2/clib_ext.h: Likewise. * db2/common_ext.h: Likewise. * db2/cxx_int.h: Likewise. * db2/db.h.src: Likewise. * db2/db_185.h.src: Likewise. * db2/db_am.h: Likewise. * db2/db_auto.h: Likewise. * db2/db_cxx.h: Likewise. * db2/db_dispatch.h: Likewise. * db2/db_ext.h: Likewise. * db2/db_int.h.src: Likewise. * db2/db_page.h: Likewise. * db2/db_shash.h: Likewise. * db2/db_swap.h: Likewise. * db2/hash.h: Likewise. * db2/hash_ext.h: Likewise. * db2/lock.h: Likewise. * db2/lock_ext.h: Likewise. * db2/log.h: Likewise. * db2/log_ext.h: Likewise. * db2/mp.h: Likewise. * db2/mp_ext.h: Likewise. * db2/mutex_ext.h: Likewise. * db2/os_ext.h: Likewise. * db2/os_func.h: Likewise. * db2/queue.h: Likewise. * db2/shqueue.h: Likewise. * db2/txn.h: Likewise. * db2/lock.c: Likewise. * db2/lock_conflict.c: Likewise. * db2/lock_deadlock.c: Likewise. * db2/lock_region.c: Likewise. * db2/lock_util.c: Likewise. * db2/log.c: Likewise. * db2/log.src: Likewise. * db2/log_archive.c: Likewise. * db2/log_auto.c: Likewise. * db2/log_compare.c: Likewise. * db2/log_findckp.c: Likewise. * db2/log_get.c: Likewise. * db2/log_put.c: Likewise. * db2/log_rec.c: Likewise. * db2/log_register.c: Likewise. * db2/mp_bh.c: Likewise. * db2/mp_fget.c: Likewise. * db2/mp_fopen.c: Likewise. * db2/mp_fput.c: Likewise. * db2/mp_fset.c: Likewise. * db2/mp_open.c: Likewise. * db2/mp_pr.c: Likewise. * db2/mp_region.c: Likewise. * db2/mp_sync.c: Likewise. * db2/68020.gcc: Likewise. * db2/mutex.c: Likewise. * db2/parisc.gcc: Likewise. * db2/parisc.hp: Likewise. * db2/sco.cc: Likewise. * db2/os_abs.c: Likewise. * db2/os_alloc.c: Likewise. * db2/os_config.c: Likewise. * db2/os_dir.c: Likewise. * db2/os_fid.c: Likewise. * db2/os_fsync.c: Likewise. * db2/os_map.c: Likewise. * db2/os_oflags.c: Likewise. * db2/os_open.c: Likewise. * db2/os_rpath.c: Likewise. * db2/os_rw.c: Likewise. * db2/os_seek.c: Likewise. * db2/os_sleep.c: Likewise. * db2/os_spin.c: Likewise. * db2/os_stat.c: Likewise. * db2/os_unlink.c: Likewise. * db2/db_archive.c: Likewise. * db2/db_checkpoint.c: Likewise. * db2/db_deadlock.c: Likewise. * db2/db_dump.c: Likewise. * db2/db_dump185.c: Likewise. * db2/db_load.c: Likewise. * db2/db_printlog.c: Likewise. * db2/db_recover.c: Likewise. * db2/db_stat.c: Likewise. * db2/txn.c: Likewise. * db2/txn.src: Likewise. * db2/txn_auto.c: Likewise. * db2/txn_rec.c: Likewise. * elf/rtld.c: Move definition of __libc_stack_end to ... * sysdeps/generic/dl-sysdep.h: ...here. * sysdeps/unix/sysv/linux/fstatvfs.c: Handle nodiratime option. * sysdeps/unix/sysv/linux/bits/statvfs.h: Define ST_NODIRATIME. * sysdeps/unix/sysv/linux/sys/mount.h: Define MS_NODIRATIME. 1998-06-08 21:44 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/fstatvfs.c: Handle constant option string from mntent correctly. 1998-06-06 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sunrpc/Makefile (generated): Correct typo. 1998-06-04 Philip Blundell <philb@gnu.org> * elf/elf.h (EM_ARM, et al.): New definitions. * sysdeps/arm/dl-machine.h: Update for new draft ARM ELF ABI.
Diffstat (limited to 'db2/include/btree.h')
-rw-r--r--db2/include/btree.h62
1 files changed, 44 insertions, 18 deletions
diff --git a/db2/include/btree.h b/db2/include/btree.h
index 878096b7b2..1660d331e7 100644
--- a/db2/include/btree.h
+++ b/db2/include/btree.h
@@ -1,7 +1,7 @@
/*-
* See the file LICENSE for redistribution information.
*
- * Copyright (c) 1996, 1997
+ * Copyright (c) 1996, 1997, 1998
* Sleepycat Software. All rights reserved.
*/
/*
@@ -43,7 +43,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
- * @(#)btree.h 10.17 (Sleepycat) 9/23/97
+ * @(#)btree.h 10.21 (Sleepycat) 5/23/98
*/
/* Forward structure declarations. */
@@ -103,28 +103,39 @@ struct __recno; typedef struct __recno RECNO;
* to return deleted entries. To simplify both the mnemonic representation
* and the code that checks for various cases, we construct a set of bitmasks.
*/
-#define S_READ 0x0001 /* Read locks. */
-#define S_WRITE 0x0002 /* Write locks. */
-
-#define S_APPEND 0x0040 /* Append to the tree. */
-#define S_DELNO 0x0080 /* Don't return deleted items. */
-#define S_DUPFIRST 0x0100 /* Return first duplicate. */
-#define S_DUPLAST 0x0200 /* Return last duplicate. */
-#define S_EXACT 0x0400 /* Exact items only. */
-#define S_PARENT 0x0800 /* Lock page pair. */
-
-#define S_DELETE (S_WRITE | S_DUPFIRST | S_DELNO | S_EXACT)
+#define S_READ 0x00001 /* Read locks. */
+#define S_WRITE 0x00002 /* Write locks. */
+
+#define S_APPEND 0x00040 /* Append to the tree. */
+#define S_DELNO 0x00080 /* Don't return deleted items. */
+#define S_DUPFIRST 0x00100 /* Return first duplicate. */
+#define S_DUPLAST 0x00200 /* Return last duplicate. */
+#define S_EXACT 0x00400 /* Exact items only. */
+#define S_PARENT 0x00800 /* Lock page pair. */
+#define S_STACK 0x01000 /* Need a complete stack. */
+
+#define S_DELETE (S_WRITE | S_DUPFIRST | S_DELNO | S_EXACT | S_STACK)
#define S_FIND (S_READ | S_DUPFIRST | S_DELNO)
-#define S_INSERT (S_WRITE | S_DUPLAST)
-#define S_KEYFIRST (S_WRITE | S_DUPFIRST)
-#define S_KEYLAST (S_WRITE | S_DUPLAST)
+#define S_INSERT (S_WRITE | S_DUPLAST | S_STACK)
+#define S_KEYFIRST (S_WRITE | S_DUPFIRST | S_STACK)
+#define S_KEYLAST (S_WRITE | S_DUPLAST | S_STACK)
#define S_WRPAIR (S_WRITE | S_DUPLAST | S_PARENT)
/*
+ * If doing insert search (including keyfirst or keylast operations) or a
+ * split search on behalf of an insert, it's okay to return the entry one
+ * past the end of the page.
+ */
+#define PAST_END_OK(f) \
+ ((f) == S_INSERT || \
+ (f) == S_KEYFIRST || (f) == S_KEYLAST || (f) == S_WRPAIR)
+
+/*
* Flags to __bam_iitem().
*/
-#define BI_NEWKEY 0x01 /* New key. */
-#define BI_DELETED 0x02 /* Key/data pair only placeholder. */
+#define BI_DELETED 0x01 /* Key/data pair only placeholder. */
+#define BI_DOINCR 0x02 /* Increment the record count. */
+#define BI_NEWKEY 0x04 /* New key. */
/*
* Various routines pass around page references. A page reference can be a
@@ -138,6 +149,21 @@ struct __epg {
};
/*
+ * All cursors are queued from the master DB structure. Convert the user's
+ * DB reference to the master DB reference. We lock the master DB mutex
+ * so that we can walk the cursor queue. There's no race in accessing the
+ * cursors, because if we're modifying a page, we have a write lock on it,
+ * and therefore no other thread than the current one can have a cursor that
+ * references the page.
+ */
+#define CURSOR_SETUP(dbp) { \
+ (dbp) = (dbp)->master; \
+ DB_THREAD_LOCK(dbp); \
+}
+#define CURSOR_TEARDOWN(dbp) \
+ DB_THREAD_UNLOCK(dbp);
+
+/*
* Btree cursor.
*
* Arguments passed to __bam_ca_replace().