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authorunknown <heikki@hundin.mysql.fi>2002-12-22 01:54:29 +0200
committerunknown <heikki@hundin.mysql.fi>2002-12-22 01:54:29 +0200
commitb69d8f4a6f4a78f1ee61936ec440fa8ebb111319 (patch)
tree120402316f5b15cb879b72bdb1c4cf59c8d932cb /innobase/include/buf0buf.h
parent62c7449a5594972f5e940bfdf8785a70f82af82c (diff)
downloadmariadb-git-b69d8f4a6f4a78f1ee61936ec440fa8ebb111319.tar.gz
Many files:
Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE sql_select.cc: Remove superfluous prints to .err log when a locking SELECT fails to a deadlock or a lock wait timeout sql/sql_select.cc: Remove superfluous prints to .err log when a locking SELECT fails to a deadlock or a lock wait timeout innobase/btr/btr0sea.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/dict/dict0dict.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/fsp/fsp0fsp.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/ibuf/ibuf0ibuf.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/include/buf0buf.h: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/include/db0err.h: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/include/dict0mem.h: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/include/mem0mem.h: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/include/row0mysql.h: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/include/row0upd.h: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/include/mem0mem.ic: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/mem/mem0pool.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/row/row0ins.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/row/row0mysql.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/row/row0sel.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/row/row0upd.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/srv/srv0start.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE innobase/ut/ut0ut.c: Merge InnoDB-4.0.7. Support for ON UPDATE CASCADE
Diffstat (limited to 'innobase/include/buf0buf.h')
-rw-r--r--innobase/include/buf0buf.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/innobase/include/buf0buf.h b/innobase/include/buf0buf.h
index f76c437bd1d..395f88a2c7c 100644
--- a/innobase/include/buf0buf.h
+++ b/innobase/include/buf0buf.h
@@ -728,8 +728,8 @@ struct buf_block_struct{
bufferfixed, or (2) the thread has an
x-latch on the block */
- /* 5. Hash search fields: NOTE that these fields are protected by
- btr_search_mutex */
+ /* 5. Hash search fields: NOTE that the first 4 fields are NOT
+ protected by any semaphore! */
ulint n_hash_helps; /* counter which controls building
of a new hash index for the page */
@@ -742,6 +742,9 @@ struct buf_block_struct{
whether the leftmost record of several
records with the same prefix should be
indexed in the hash index */
+
+ /* The following 4 fields are protected by btr_search_latch: */
+
ibool is_hashed; /* TRUE if hash index has already been
built on this page; note that it does
not guarantee that the index is