From 8e6a4c6201ab14414837dcba79cfb4180b92e18d Mon Sep 17 00:00:00 2001
From: "heikki@hundin.mysql.fi" <>
Date: Sun, 12 Jan 2003 23:58:56 +0200
Subject: ut0mem.c, row0sel.c, row0mysql.c, ut0mem.h, row0sel.h, row0mysql.h:  
 Test allocation of memory beforehand if we are trying to return a > 2 MB
 BLOB; normally InnoDB asserts if memory allocation fails ha_innodb.cc:   Do
 not fetch all columns if change_active_index() is called during a query; a
 sum(a), max(a) query seemed to do that, doing unnecessary copying (the change
 actually made in the previous bk ci)   Free BLOB heap of handle when MySQL
 calls some ::extra()'s

---
 innobase/include/row0mysql.h |  8 ++++++++
 innobase/include/row0sel.h   |  3 ++-
 innobase/include/ut0mem.h    | 10 ++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)

(limited to 'innobase/include')

diff --git a/innobase/include/row0mysql.h b/innobase/include/row0mysql.h
index 25d2ab77007..972fabc74cf 100644
--- a/innobase/include/row0mysql.h
+++ b/innobase/include/row0mysql.h
@@ -52,6 +52,14 @@ row_mysql_read_var_ref_noninline(
 	ulint*	len,	/* out: variable-length field length */
 	byte*	field);	/* in: field */
 /***********************************************************************
+Frees the blob heap in prebuilt when no longer needed. */
+
+void
+row_mysql_prebuilt_free_blob_heap(
+/*==============================*/
+	row_prebuilt_t*	prebuilt);	/* in: prebuilt struct of a
+					ha_innobase:: table handle */
+/***********************************************************************
 Stores a reference to a BLOB in the MySQL format. */
 
 void
diff --git a/innobase/include/row0sel.h b/innobase/include/row0sel.h
index aa2da6fe5f6..cfc30852b87 100644
--- a/innobase/include/row0sel.h
+++ b/innobase/include/row0sel.h
@@ -115,7 +115,8 @@ row_search_for_mysql(
 /*=================*/
 					/* out: DB_SUCCESS,
 					DB_RECORD_NOT_FOUND, 
-					DB_END_OF_INDEX, or DB_DEADLOCK */
+					DB_END_OF_INDEX, DB_DEADLOCK,
+					or DB_TOO_BIG_RECORD */
 	byte*		buf,		/* in/out: buffer for the fetched
 					row in the MySQL format */
 	ulint		mode,		/* in: search mode PAGE_CUR_L, ... */
diff --git a/innobase/include/ut0mem.h b/innobase/include/ut0mem.h
index 09e0d800685..d3d04d58596 100644
--- a/innobase/include/ut0mem.h
+++ b/innobase/include/ut0mem.h
@@ -50,6 +50,16 @@ ut_malloc(
 	                /* out, own: allocated memory */
         ulint   n);     /* in: number of bytes to allocate */
 /**************************************************************************
+Tests if malloc of n bytes would succeed. ut_malloc() asserts if memory runs
+out. It cannot be used if we want to return an error message. Prints to
+stderr a message if fails. */
+
+ibool
+ut_test_malloc(
+/*===========*/
+			/* out: TRUE if succeeded */
+	ulint	n);	/* in: try to allocate this many bytes */
+/**************************************************************************
 Frees a memory bloock allocated with ut_malloc. */
 
 void
-- 
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