Applied innodb-5.1-ss1039 and innodb-5.1-ss1134 snapshots.

Fixes:
- Bug #24712: SHOW TABLE STATUS for file-per-table showing incorrect time fields
- Bug #24386: Performance degradation caused by instrumentation in mutex_struct
- Bug #24190: many exportable definitions of field_in_record_is_null
- Bug #21468: InnoDB crash during recovery with corrupted data pages: XA bug?

storage/innobase/buf/buf0buf.c

@@ -1755,22 +1755,22 @@ buf_page_init_for_read(
 	if (*err == DB_TABLESPACE_DELETED
 	    || NULL != buf_page_hash_get(space, offset)) {
 
-		    /* The page belongs to a space which has been
-		    deleted or is being deleted, or the page is
-		    already in buf_pool, return */
+		/* The page belongs to a space which has been
+		deleted or is being deleted, or the page is
+		already in buf_pool, return */
 
 		mutex_exit(&block->mutex);
-		    mutex_exit(&(buf_pool->mutex));
+		mutex_exit(&(buf_pool->mutex));
 
-		    buf_block_free(block);
+		buf_block_free(block);
 
-		    if (mode == BUF_READ_IBUF_PAGES_ONLY) {
+		if (mode == BUF_READ_IBUF_PAGES_ONLY) {
 
-			    mtr_commit(&mtr);
-		    }
+			mtr_commit(&mtr);
+		}
 
-		    return(NULL);
-	    }
+		return(NULL);
+	}
 
 	ut_ad(block);
 

storage/innobase/buf/buf0flu.c

@@ -854,8 +854,10 @@ buf_flush_batch(
 
 	ut_ad((flush_type == BUF_FLUSH_LRU)
 	      || (flush_type == BUF_FLUSH_LIST));
+#ifdef UNIV_SYNC_DEBUG
 	ut_ad((flush_type != BUF_FLUSH_LIST)
 	      || sync_thread_levels_empty_gen(TRUE));
+#endif /* UNIV_SYNC_DEBUG */
 	mutex_enter(&(buf_pool->mutex));
 
 	if ((buf_pool->n_flush[flush_type] > 0)

storage/innobase/dict/dict0dict.c

@@ -801,43 +801,20 @@ dict_init(void)
 }
 
 /**************************************************************************
-Returns a table object. NOTE! This is a high-level function to be used
-mainly from outside the 'dict' directory. Inside this directory
-dict_table_get_low is usually the appropriate function. */
+Returns a table object and optionally increment its MySQL open handle count.
+NOTE! This is a high-level function to be used mainly from outside the
+'dict' directory. Inside this directory dict_table_get_low is usually the
+appropriate function. */
 
 dict_table_t*
 dict_table_get(
 /*===========*/
 					/* out: table, NULL if
 					does not exist */
-	const char*	table_name)	/* in: table name */
-{
-	dict_table_t*	table;
-
-	mutex_enter(&(dict_sys->mutex));
-
-	table = dict_table_get_low(table_name);
-
-	mutex_exit(&(dict_sys->mutex));
-
-	if (table != NULL) {
-		if (!table->stat_initialized) {
-			dict_update_statistics(table);
-		}
-	}
-
-	return(table);
-}
-
-/**************************************************************************
-Returns a table object and increments MySQL open handle count on the table. */
-
-dict_table_t*
-dict_table_get_and_increment_handle_count(
-/*======================================*/
-					/* out: table, NULL if
-					does not exist */
-	const char*	table_name)	/* in: table name */
+	const char*	table_name,	/* in: table name */
+	ibool		inc_mysql_count)
+     					/* in: whether to increment the open
+					handle count on the table */
 {
 	dict_table_t*	table;
 
@@ -845,15 +822,17 @@ dict_table_get_and_increment_handle_count(
 
 	table = dict_table_get_low(table_name);
 
-	if (table != NULL) {
-
+	if (inc_mysql_count && table) {
 		table->n_mysql_handles_opened++;
 	}
 
 	mutex_exit(&(dict_sys->mutex));
 
 	if (table != NULL) {
-		if (!table->stat_initialized && !table->ibd_file_missing) {
+		if (!table->stat_initialized) {
+			/* If table->ibd_file_missing == TRUE, this will
+			print an error message and return without doing
+			anything. */
 			dict_update_statistics(table);
 		}
 	}

storage/innobase/ha/ha0ha.c

@@ -18,16 +18,18 @@ Creates a hash table with >= n array cells. The actual number of cells is
 chosen to be a prime number slightly bigger than n. */
 
 hash_table_t*
-ha_create(
-/*======*/
+ha_create_func(
+/*===========*/
 				/* out, own: created table */
 	ibool	in_btr_search,	/* in: TRUE if the hash table is used in
 				the btr_search module */
 	ulint	n,		/* in: number of array cells */
-	ulint	n_mutexes,	/* in: number of mutexes to protect the
-				hash table: must be a power of 2, or 0 */
-	ulint	mutex_level)	/* in: level of the mutexes in the latching
+#ifdef UNIV_SYNC_DEBUG
+	ulint	mutex_level,	/* in: level of the mutexes in the latching
 				order: this is used in the debug version */
+#endif /* UNIV_SYNC_DEBUG */
+	ulint	n_mutexes)	/* in: number of mutexes to protect the
+				hash table: must be a power of 2, or 0 */
 {
 	hash_table_t*	table;
 	ulint		i;

storage/innobase/ha/hash0hash.c

@@ -129,13 +129,15 @@ hash_table_free(
 Creates a mutex array to protect a hash table. */
 
 void
-hash_create_mutexes(
-/*================*/
+hash_create_mutexes_func(
+/*=====================*/
 	hash_table_t*	table,		/* in: hash table */
-	ulint		n_mutexes,	/* in: number of mutexes, must be a
-					power of 2 */
-	ulint		sync_level)	/* in: latching order level of the
+#ifdef UNIV_SYNC_DEBUG
+	ulint		sync_level,	/* in: latching order level of the
 					mutexes: used in the debug version */
+#endif /* UNIV_SYNC_DEBUG */
+	ulint		n_mutexes)	/* in: number of mutexes, must be a
+					power of 2 */
 {
 	ulint	i;
 

storage/innobase/handler/ha_innodb.cc

@@ -39,9 +39,6 @@ have disables the InnoDB inlining in this file. */
 #include <myisampack.h>
 #include <mysys_err.h>
 #include <my_sys.h>
-
-#define MAX_ULONG_BIT ((ulong) 1 << (sizeof(ulong)*8-1))
-
 #include "ha_innodb.h"
 
 pthread_mutex_t innobase_share_mutex,	/* to protect innobase_open_files */
@@ -1261,18 +1258,6 @@ trx_is_interrupted(
 	return(trx && trx->mysql_thd && ((THD*) trx->mysql_thd)->killed);
 }
 
-/**************************************************************************
-Obtain a pointer to the MySQL THD object, as in current_thd().	This
-definition must match the one in sql/ha_innodb.cc! */
-extern "C"
-void*
-innobase_current_thd(void)
-/*======================*/
-			/* out: MySQL THD object */
-{
-	return(current_thd);
-}
-
 /*********************************************************************
 Call this when you have opened a new table handle in HANDLER, before you
 call index_read_idx() etc. Actually, we can let the cursor stay open even
@@ -2354,7 +2339,7 @@ ha_innobase::open(
 
 	/* Get pointer to a table object in InnoDB dictionary cache */
 
-	ib_table = dict_table_get_and_increment_handle_count(norm_name);
+	ib_table = dict_table_get(norm_name, TRUE);
 
 	if (NULL == ib_table) {
 		ut_print_timestamp(stderr);
@@ -4451,7 +4436,7 @@ ha_innobase::rnd_pos(
 	}
 
 	if (error) {
-	        DBUG_PRINT("error", ("Got error: %d", error));
+		DBUG_PRINT("error", ("Got error: %d", error));
 		DBUG_RETURN(error);
 	}
 
@@ -4932,7 +4917,7 @@ ha_innobase::create(
 
 	log_buffer_flush_to_disk();
 
-	innobase_table = dict_table_get(norm_name);
+	innobase_table = dict_table_get(norm_name, FALSE);
 
 	DBUG_ASSERT(innobase_table != 0);
 
@@ -5543,16 +5528,10 @@ ha_innobase::info(
 		prebuilt->trx->op_info = (char*)
 					  "returning various info to MySQL";
 
-		if (ib_table->space != 0) {
-			my_snprintf(path, sizeof(path), "%s/%s%s",
-				mysql_data_home, ib_table->name, ".ibd");
-			unpack_filename(path,path);
-		} else {
-			my_snprintf(path, sizeof(path), "%s/%s%s",
+		my_snprintf(path, sizeof(path), "%s/%s%s",
 				mysql_data_home, ib_table->name, reg_ext);
 
-			unpack_filename(path,path);
-		}
+		unpack_filename(path,path);
 
 		/* Note that we do not know the access time of the table,
 		nor the CHECK TABLE time, nor the UPDATE or INSERT time. */
@@ -6605,22 +6584,23 @@ innodb_mutex_show_status(
 {
 	char buf1[IO_SIZE], buf2[IO_SIZE];
 	mutex_t*  mutex;
+#ifdef UNIV_DEBUG
 	ulint	  rw_lock_count= 0;
 	ulint	  rw_lock_count_spin_loop= 0;
 	ulint	  rw_lock_count_spin_rounds= 0;
 	ulint	  rw_lock_count_os_wait= 0;
 	ulint	  rw_lock_count_os_yield= 0;
 	ulonglong rw_lock_wait_time= 0;
+#endif /* UNIV_DEBUG */
 	uint	  hton_name_len= strlen(innobase_hton_name), buf1len, buf2len;
 	DBUG_ENTER("innodb_mutex_show_status");
 
-#ifdef MUTEX_PROTECT_TO_BE_ADDED_LATER
-	mutex_enter(&mutex_list_mutex);
-#endif
+	mutex_enter_noninline(&mutex_list_mutex);
 
 	mutex = UT_LIST_GET_FIRST(mutex_list);
 
 	while (mutex != NULL) {
+#ifdef UNIV_DEBUG
 		if (mutex->mutex_type != 1) {
 			if (mutex->count_using > 0) {
 				buf1len= my_snprintf(buf1, sizeof(buf1),
@@ -6636,14 +6616,13 @@ innodb_mutex_show_status(
 					mutex->count_spin_rounds,
 					mutex->count_os_wait,
 					mutex->count_os_yield,
-                                        (ulong) (mutex->lspent_time/1000));
+					(ulong) (mutex->lspent_time/1000));
 
 				if (stat_print(thd, innobase_hton_name,
 						hton_name_len, buf1, buf1len,
 						buf2, buf2len)) {
-#ifdef MUTEX_PROTECT_TO_BE_ADDED_LATER
-					mutex_exit(&mutex_list_mutex);
-#endif
+					mutex_exit_noninline(
+						&mutex_list_mutex);
 					DBUG_RETURN(1);
 				}
 			}
@@ -6656,26 +6635,39 @@ innodb_mutex_show_status(
 			rw_lock_count_os_yield += mutex->count_os_yield;
 			rw_lock_wait_time += mutex->lspent_time;
 		}
+#else /* UNIV_DEBUG */
+		buf1len= my_snprintf(buf1, sizeof(buf1), "%s:%lu",
+				     mutex->cfile_name, (ulong) mutex->cline);
+		buf2len= my_snprintf(buf2, sizeof(buf2), "os_waits=%lu",
+				     mutex->count_os_wait);
+
+		if (stat_print(thd, innobase_hton_name,
+			       hton_name_len, buf1, buf1len,
+			       buf2, buf2len)) {
+			mutex_exit_noninline(&mutex_list_mutex);
+			DBUG_RETURN(1);
+		}
+#endif /* UNIV_DEBUG */
 
 		mutex = UT_LIST_GET_NEXT(list, mutex);
 	}
 
+	mutex_exit_noninline(&mutex_list_mutex);
+
+#ifdef UNIV_DEBUG
 	buf2len= my_snprintf(buf2, sizeof(buf2),
 		"count=%lu, spin_waits=%lu, spin_rounds=%lu, "
 		"os_waits=%lu, os_yields=%lu, os_wait_times=%lu",
 		rw_lock_count, rw_lock_count_spin_loop,
 		rw_lock_count_spin_rounds,
 		rw_lock_count_os_wait, rw_lock_count_os_yield,
-                (ulong) (rw_lock_wait_time/1000));
+		(ulong) (rw_lock_wait_time/1000));
 
 	if (stat_print(thd, innobase_hton_name, hton_name_len,
 			STRING_WITH_LEN("rw_lock_mutexes"), buf2, buf2len)) {
 		DBUG_RETURN(1);
 	}
-
-#ifdef MUTEX_PROTECT_TO_BE_ADDED_LATER
-	mutex_exit(&mutex_list_mutex);
-#endif
+#endif /* UNIV_DEBUG */
 
 	DBUG_RETURN(FALSE);
 }
@@ -7348,7 +7340,6 @@ innobase_get_at_most_n_mbchars(
 }
 }
 
-extern "C" {
 /**********************************************************************
 This function returns true if
 
@@ -7358,33 +7349,34 @@ is either REPLACE or LOAD DATA INFILE REPLACE.
 2) SQL-query in the current thread
 is INSERT ON DUPLICATE KEY UPDATE.
 
-NOTE that /mysql/innobase/row/row0ins.c must contain the
+NOTE that storage/innobase/row/row0ins.c must contain the
 prototype for this function ! */
-
+extern "C"
 ibool
 innobase_query_is_update(void)
 /*==========================*/
 {
-	THD*	thd;
+	THD*	thd = current_thd;
 
-	thd = (THD *)innobase_current_thd();
+	if (!thd) {
+		/* InnoDB's internal threads may run InnoDB stored procedures
+		that call this function. Then current_thd is not defined
+		(it is probably NULL). */
 
-	if (thd->lex->sql_command == SQLCOM_REPLACE ||
-		thd->lex->sql_command == SQLCOM_REPLACE_SELECT ||
-		(thd->lex->sql_command == SQLCOM_LOAD &&
-			thd->lex->duplicates == DUP_REPLACE)) {
-
-		return(1);
+		return(FALSE);
 	}
 
-	if (thd->lex->sql_command == SQLCOM_INSERT &&
-		thd->lex->duplicates  == DUP_UPDATE) {
-
-		return(1);
+	switch (thd->lex->sql_command) {
+	case SQLCOM_REPLACE:
+	case SQLCOM_REPLACE_SELECT:
+		return(TRUE);
+	case SQLCOM_LOAD:
+		return(thd->lex->duplicates == DUP_REPLACE);
+	case SQLCOM_INSERT:
+		return(thd->lex->duplicates == DUP_UPDATE);
+	default:
+		return(FALSE);
 	}
-
-	return(0);
-}
 }
 
 /***********************************************************************

storage/innobase/include/btr0sea.h

@@ -160,7 +160,7 @@ struct btr_search_struct{
 				number of full fields */
 	ulint	n_bytes;	/* recommended prefix: number of bytes in
 				an incomplete field;
-				cf. BTR_PAGE_MAX_REC_SIZE */
+				see also BTR_PAGE_MAX_REC_SIZE */
 	ibool	left_side;	/* TRUE or FALSE, depending on whether
 				the leftmost record of several records with
 				the same prefix should be indexed in the

storage/innobase/include/buf0buf.ic

@@ -625,8 +625,6 @@ buf_page_release(
 					RW_NO_LATCH */
 	mtr_t*		mtr)		/* in: mtr */
 {
-	ulint	buf_fix_count;
-
 	ut_ad(block);
 
 	ut_a(block->state == BUF_BLOCK_FILE_PAGE);
@@ -643,8 +641,7 @@ buf_page_release(
 #ifdef UNIV_SYNC_DEBUG
 	rw_lock_s_unlock(&(block->debug_latch));
 #endif
-	buf_fix_count = block->buf_fix_count;
-	block->buf_fix_count = buf_fix_count - 1;
+	block->buf_fix_count--;
 
 	mutex_exit(&block->mutex);
 

storage/innobase/include/data0type.ic

@@ -65,8 +65,8 @@ dtype_get_mblen(
 		innobase_get_cset_width(dtype_get_charset_coll(prtype),
 					mbminlen, mbmaxlen);
 		ut_ad(*mbminlen <= *mbmaxlen);
-		ut_ad(*mbminlen <= 2); /* cf. the bit-field in dtype_t */
-		ut_ad(*mbmaxlen < 1 << 3); /* cf. the bit-field in dtype_t */
+		ut_ad(*mbminlen <= 2); /* mbminlen in dtype_t is 0..3 */
+		ut_ad(*mbmaxlen < 1 << 3); /* mbmaxlen in dtype_t is 0..7 */
 #else /* !UNIV_HOTBACKUP */
 		ut_a(mtype <= DATA_BINARY);
 		*mbminlen = *mbmaxlen = 1;

storage/innobase/include/dict0dict.h

@@ -326,26 +326,20 @@ dict_foreign_parse_drop_constraints(
 	const char***	constraints_to_drop);	/* out: id's of the
 						constraints to drop */
 /**************************************************************************
-Returns a table object. NOTE! This is a high-level function to be used
-mainly from outside the 'dict' directory. Inside this directory
-dict_table_get_low is usually the appropriate function. */
+Returns a table object and optionally increment its MySQL open handle count.
+NOTE! This is a high-level function to be used mainly from outside the
+'dict' directory. Inside this directory dict_table_get_low is usually the
+appropriate function. */
 
 dict_table_t*
 dict_table_get(
 /*===========*/
 					/* out: table, NULL if
 					does not exist */
-	const char*	table_name);	/* in: table name */
-/**************************************************************************
-Returns a table object and increments MySQL open handle count on the table.
-*/
-
-dict_table_t*
-dict_table_get_and_increment_handle_count(
-/*======================================*/
-					/* out: table, NULL if
-					does not exist */
-	const char*	table_name);	/* in: table name */
+	const char*	table_name,	/* in: table name */
+	ibool		inc_mysql_count);
+					/* in: whether to increment the open
+					handle count on the table */
 /**************************************************************************
 Returns a table object based on table id. */
 

storage/innobase/include/ha0ha.h

@@ -41,16 +41,23 @@ Creates a hash table with >= n array cells. The actual number of cells is
 chosen to be a prime number slightly bigger than n. */
 
 hash_table_t*
-ha_create(
-/*======*/
+ha_create_func(
+/*===========*/
 				/* out, own: created table */
 	ibool	in_btr_search,	/* in: TRUE if the hash table is used in
 				the btr_search module */
 	ulint	n,		/* in: number of array cells */
-	ulint	n_mutexes,	/* in: number of mutexes to protect the
-				hash table: must be a power of 2 */
-	ulint	mutex_level);	/* in: level of the mutexes in the latching
+#ifdef UNIV_SYNC_DEBUG
+	ulint	mutex_level,	/* in: level of the mutexes in the latching
 				order: this is used in the debug version */
+#endif /* UNIV_SYNC_DEBUG */
+	ulint	n_mutexes);	/* in: number of mutexes to protect the
+				hash table: must be a power of 2 */
+#ifdef UNIV_SYNC_DEBUG
+# define ha_create(b,n_c,n_m,level) ha_create_func(b,n_c,level,n_m)
+#else /* UNIV_SYNC_DEBUG */
+# define ha_create(b,n_c,n_m,level) ha_create_func(b,n_c,n_m)
+#endif /* UNIV_SYNC_DEBUG */
 /*****************************************************************
 Inserts an entry into a hash table. If an entry with the same fold number
 is found, its node is updated to point to the new data, and no new node

storage/innobase/include/hash0hash.h

@@ -31,12 +31,20 @@ hash_create(
 Creates a mutex array to protect a hash table. */
 
 void
-hash_create_mutexes(
-/*================*/
+hash_create_mutexes_func(
+/*=====================*/
 	hash_table_t*	table,		/* in: hash table */
-	ulint		n_mutexes,	/* in: number of mutexes */
-	ulint		sync_level);	/* in: latching order level of the
+#ifdef UNIV_SYNC_DEBUG
+	ulint		sync_level,	/* in: latching order level of the
 					mutexes: used in the debug version */
+#endif /* UNIV_SYNC_DEBUG */
+	ulint		n_mutexes);	/* in: number of mutexes */
+#ifdef UNIV_SYNC_DEBUG
+# define hash_create_mutexes(t,n,level) hash_create_mutexes_func(t,level,n)
+#else /* UNIV_SYNC_DEBUG */
+# define hash_create_mutexes(t,n,level) hash_create_mutexes_func(t,n)
+#endif /* UNIV_SYNC_DEBUG */
+
 /*****************************************************************
 Frees a hash table. */
 

storage/innobase/include/sync0rw.h

@@ -61,8 +61,18 @@ Creates, or rather, initializes an rw-lock object in a specified memory
 location (which must be appropriately aligned). The rw-lock is initialized
 to the non-locked state. Explicit freeing of the rw-lock with rw_lock_free
 is necessary only if the memory block containing it is freed. */
-#define rw_lock_create(L, level) 					\
-	rw_lock_create_func((L), (level), __FILE__, __LINE__, #L)
+#ifdef UNIV_DEBUG
+# ifdef UNIV_SYNC_DEBUG
+#  define rw_lock_create(L, level) 					\
+	rw_lock_create_func((L), (level), #L, __FILE__, __LINE__)
+# else /* UNIV_SYNC_DEBUG */
+#  define rw_lock_create(L, level) 					\
+	rw_lock_create_func((L), #L, __FILE__, __LINE__)
+# endif /* UNIV_SYNC_DEBUG */
+#else /* UNIV_DEBUG */
+# define rw_lock_create(L, level) 					\
+	rw_lock_create_func((L), __FILE__, __LINE__)
+#endif /* UNIV_DEBUG */
 
 /**********************************************************************
 Creates, or rather, initializes an rw-lock object in a specified memory
@@ -74,10 +84,14 @@ void
 rw_lock_create_func(
 /*================*/
 	rw_lock_t*	lock,		/* in: pointer to memory */
+#ifdef UNIV_DEBUG
+# ifdef UNIV_SYNC_DEBUG
 	ulint		level,		/* in: level */
+# endif /* UNIV_SYNC_DEBUG */
+	const char*	cmutex_name, 	/* in: mutex name */
+#endif /* UNIV_DEBUG */
 	const char*	cfile_name,	/* in: file name where created */
-	ulint 		cline,		/* in: file line where created */
-	const char*	cmutex_name); 	/* in: mutex name */
+	ulint 		cline);		/* in: file line where created */
 /**********************************************************************
 Calling this function is obligatory only if the memory buffer containing
 the rw-lock is freed. Removes an rw-lock object from the global list. The

storage/innobase/include/sync0sync.h

@@ -39,8 +39,18 @@ location (which must be appropriately aligned). The mutex is initialized
 in the reset state. Explicit freeing of the mutex with mutex_free is
 necessary only if the memory block containing it is freed. */
 
-#define mutex_create(M, level)					\
-	mutex_create_func((M), (level), __FILE__, __LINE__, #M)
+#ifdef UNIV_DEBUG
+# ifdef UNIV_SYNC_DEBUG
+#  define mutex_create(M, level)					\
+	mutex_create_func((M), #M, (level), __FILE__, __LINE__)
+# else
+#  define mutex_create(M, level)					\
+	mutex_create_func((M), #M, __FILE__, __LINE__)
+# endif
+#else
+# define mutex_create(M, level)					\
+	mutex_create_func((M), __FILE__, __LINE__)
+#endif
 
 /**********************************************************************
 Creates, or rather, initializes a mutex object in a specified memory
@@ -52,10 +62,14 @@ void
 mutex_create_func(
 /*==============*/
 	mutex_t*	mutex,		/* in: pointer to memory */
+#ifdef UNIV_DEBUG
+	const char*	cmutex_name,	/* in: mutex name */
+# ifdef UNIV_SYNC_DEBUG
 	ulint		level,		/* in: level */
+# endif /* UNIV_SYNC_DEBUG */
+#endif /* UNIV_DEBUG */
 	const char*	cfile_name,	/* in: file name where created */
-  ulint cline,	/* in: file line where created */
-  const char* cmutex_name); /* in: mutex name */
+	ulint		cline);		/* in: file line where created */
 /**********************************************************************
 Calling this function is obligatory only if the memory buffer containing
 the mutex is freed. Removes a mutex object from the mutex list. The mutex
@@ -149,6 +163,7 @@ void
 sync_print(
 /*=======*/
 	FILE*	file);		/* in: file where to print */
+#ifdef UNIV_DEBUG
 /**********************************************************************
 Checks that the mutex has been initialized. */
 
@@ -156,6 +171,8 @@ ibool
 mutex_validate(
 /*===========*/
 	mutex_t*	mutex);
+#endif /* UNIV_DEBUG */
+#ifdef UNIV_SYNC_DEBUG
 /**********************************************************************
 Adds a latch and its level in the thread level array. Allocates the memory
 for the array if called first time for this OS thread. Makes the checks
@@ -197,7 +214,6 @@ sync_thread_levels_empty_gen(
 					allowed to be owned by the thread,
 					also purge_is_running mutex is
 					allowed */
-#ifdef UNIV_SYNC_DEBUG
 /**********************************************************************
 Checks that the current thread owns the mutex. Works only
 in the debug version. */
@@ -465,26 +481,29 @@ struct mutex_struct {
 	ulint	line;		/* Line where the mutex was locked */
 	os_thread_id_t thread_id; /* Debug version: The thread id of the
 				thread which locked the mutex. */
-#endif /* UNIV_SYNC_DEBUG */
 	ulint	level;		/* Level in the global latching order */
+#endif /* UNIV_SYNC_DEBUG */
 	const char*	cfile_name;/* File name where mutex created */
-	ulint	cline;		/* Line where created */
-	ulint	magic_n;
+	ulint		cline;	/* Line where created */
+#ifdef UNIV_DEBUG
+	ulint		magic_n;
+# define MUTEX_MAGIC_N	(ulint)979585
+#endif /* UNIV_DEBUG */
 #ifndef UNIV_HOTBACKUP
-  ulong count_using; /* count of times mutex used */
-  ulong count_spin_loop; /* count of spin loops */
-  ulong count_spin_rounds; /* count of spin rounds */
-  ulong count_os_wait; /* count of os_wait */
-  ulong count_os_yield; /* count of os_wait */
-  ulonglong lspent_time; /* mutex os_wait timer msec */
-  ulonglong lmax_spent_time; /* mutex os_wait timer msec */
-  const char* cmutex_name;/* mutex name	 */
-  ulint mutex_type;/* 0 - usual mutex 1 - rw_lock mutex	 */
+	ulong		count_os_wait; /* count of os_wait */
+# ifdef UNIV_DEBUG
+	ulong		count_using; /* count of times mutex used */
+	ulong		count_spin_loop; /* count of spin loops */
+	ulong		count_spin_rounds; /* count of spin rounds */
+	ulong		count_os_yield; /* count of os_wait */
+	ulonglong	lspent_time; /* mutex os_wait timer msec */
+	ulonglong	lmax_spent_time; /* mutex os_wait timer msec */
+	const char*	cmutex_name;/* mutex name */
+	ulint		mutex_type;/* 0 - usual mutex 1 - rw_lock mutex	 */
+# endif /* UNIV_DEBUG */
 #endif /* !UNIV_HOTBACKUP */
 };
 
-#define MUTEX_MAGIC_N	(ulint)979585
-
 /* The global array of wait cells for implementation of the databases own
 mutexes and read-write locks. Appears here for debugging purposes only! */
 
@@ -496,20 +515,16 @@ to 20 microseconds. */
 
 #define	SYNC_SPIN_ROUNDS	srv_n_spin_wait_rounds
 
-#define SYNC_INFINITE_TIME	((ulint)(-1))
-
-/* Means that a timeout elapsed when waiting */
-
-#define SYNC_TIME_EXCEEDED	(ulint)1
-
 /* The number of system calls made in this module. Intended for performance
 monitoring. */
 
 extern	ulint	mutex_system_call_count;
 extern	ulint	mutex_exit_count;
 
+#ifdef UNIV_SYNC_DEBUG
 /* Latching order checks start when this is set TRUE */
 extern ibool	sync_order_checks_on;
+#endif /* UNIV_SYNC_DEBUG */
 
 /* This variable is set to TRUE when sync_init is called */
 extern ibool	sync_initialized;

storage/innobase/include/sync0sync.ic

@@ -254,9 +254,9 @@ mutex_enter_func(
 	/* Note that we do not peek at the value of lock_word before trying
 	the atomic test_and_set; we could peek, and possibly save time. */
 
-#ifndef UNIV_HOTBACKUP
+#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP
 	mutex->count_using++;
-#endif /* UNIV_HOTBACKUP */
+#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */
 
 	if (!mutex_test_and_set(mutex)) {
 #ifdef UNIV_SYNC_DEBUG

storage/innobase/include/univ.i

@@ -83,19 +83,27 @@ memory is read outside the allocated blocks. */
 /* Make a non-inline debug version */
 
 #if 0
-#define UNIV_DEBUG
-#define UNIV_MEM_DEBUG
-#define UNIV_IBUF_DEBUG
-#define UNIV_SYNC_DEBUG
-#define UNIV_SEARCH_DEBUG
-#define UNIV_SYNC_PERF_STAT
-#define UNIV_SEARCH_PERF_STAT
-#define UNIV_SRV_PRINT_LATCH_WAITS
-#define UNIV_BTR_PRINT
+#define UNIV_DEBUG				/* Enable ut_ad() assertions */
+#define UNIV_LIST_DEBUG				/* debug UT_LIST_ macros */
+#define UNIV_MEM_DEBUG				/* detect memory leaks etc */
+#define UNIV_IBUF_DEBUG				/* debug the insert buffer;
+this limits the database to IBUF_COUNT_N_SPACES and IBUF_COUNT_N_PAGES,
+and the insert buffer must be empty when the database is started */
+#define UNIV_SYNC_DEBUG				/* debug mutex and latch
+operations (very slow); also UNIV_DEBUG must be defined */
+#define UNIV_SEARCH_DEBUG			/* debug B-tree comparisons */
+#define UNIV_SYNC_PERF_STAT			/* operation counts for
+						rw-locks and mutexes */
+#define UNIV_SEARCH_PERF_STAT			/* statistics for the
+						adaptive hash index */
+#define UNIV_SRV_PRINT_LATCH_WAITS		/* enable diagnostic output
+						in sync0sync.c */
+#define UNIV_BTR_PRINT				/* enable functions for
+						printing B-trees */
 #endif
 
-#define UNIV_BTR_DEBUG
-#define UNIV_LIGHT_MEM_DEBUG
+#define UNIV_BTR_DEBUG				/* check B-tree links */
+#define UNIV_LIGHT_MEM_DEBUG			/* light memory debugging */
 
 #ifdef HAVE_purify
 /* The following sets all new allocated memory to zero before use:

storage/innobase/include/ut0lst.h

@@ -124,7 +124,7 @@ name, NODE1 and NODE2 are pointers to nodes. */
 }\
 
 /* Invalidate the pointers in a list node. */
-#ifdef UNIV_DEBUG
+#ifdef UNIV_LIST_DEBUG
 # define UT_LIST_REMOVE_CLEAR(NAME, N)		\
 ((N)->NAME.prev = (N)->NAME.next = (void*) -1)
 #else

storage/innobase/lock/lock0lock.c

@@ -4391,10 +4391,6 @@ lock_print_info_all_transactions(
 					trx->read_view->up_limit_id));
 		}
 
-		fprintf(file,
-			"Trx has approximately %lu row locks\n",
-			(ulong) lock_number_of_rows_locked(trx));
-
 		if (trx->que_state == TRX_QUE_LOCK_WAIT) {
 			fprintf(file,
 				"------- TRX HAS BEEN WAITING %lu SEC"

storage/innobase/log/log0recv.c

@@ -33,6 +33,7 @@ Created 9/20/1997 Heikki Tuuri
 #include "btr0cur.h"
 #include "dict0boot.h"
 #include "fil0fil.h"
+#include "sync0sync.h"
 
 #ifdef UNIV_HOTBACKUP
 /* This is set to FALSE if the backup was originally taken with the
@@ -190,6 +191,7 @@ recv_sys_empty_hash(void)
 	recv_sys->addr_hash = hash_create(buf_pool_get_curr_size() / 256);
 }
 
+#ifndef UNIV_LOG_DEBUG
 /************************************************************
 Frees the recovery system. */
 static
@@ -209,6 +211,7 @@ recv_sys_free(void)
 
 	mutex_exit(&(recv_sys->mutex));
 }
+#endif /* UNIV_LOG_DEBUG */
 
 /************************************************************
 Truncates possible corrupted or extra records from a log group. */
@@ -2855,6 +2858,15 @@ recv_recovery_from_checkpoint_finish(void)
 #ifndef UNIV_LOG_DEBUG
 	recv_sys_free();
 #endif
+
+#ifdef UNIV_SYNC_DEBUG
+	/* Wait for a while so that created threads have time to suspend
+	themselves before we switch the latching order checks on */
+	os_thread_sleep(1000000);
+
+	/* Switch latching order checks on in sync0sync.c */
+	sync_order_checks_on = TRUE;
+#endif
 	if (srv_force_recovery < SRV_FORCE_NO_TRX_UNDO) {
 		/* Rollback the uncommitted transactions which have no user
 		session */

storage/innobase/row/row0ins.c

@@ -1524,7 +1524,8 @@ row_ins_check_foreign_constraints(
 		if (foreign->foreign_index == index) {
 
 			if (foreign->referenced_table == NULL) {
-				dict_table_get(foreign->referenced_table_name);
+				dict_table_get(foreign->referenced_table_name,
+					       FALSE);
 			}
 
 			if (0 == trx->dict_operation_lock_mode) {

storage/innobase/row/row0sel.c

@@ -1831,7 +1831,9 @@ row_sel(
 
 	mtr_commit(&mtr);
 
+#ifdef UNIV_SYNC_DEBUG
 	ut_ad(sync_thread_levels_empty_gen(TRUE));
+#endif /* UNIV_SYNC_DEBUG */
 	err = DB_SUCCESS;
 	goto func_exit;
 
@@ -1850,7 +1852,9 @@ row_sel(
 	leaf_contains_updates = FALSE;
 	mtr_has_extra_clust_latch = FALSE;
 
+#ifdef UNIV_SYNC_DEBUG
 	ut_ad(sync_thread_levels_empty_gen(TRUE));
+#endif /* UNIV_SYNC_DEBUG */
 
 	goto table_loop;
 
@@ -1866,7 +1870,9 @@ row_sel(
 
 	mtr_commit(&mtr);
 
+#ifdef UNIV_SYNC_DEBUG
 	ut_ad(sync_thread_levels_empty_gen(TRUE));
+#endif /* UNIV_SYNC_DEBUG */
 
 func_exit:
 	if (UNIV_LIKELY_NULL(heap)) {
@@ -4447,7 +4453,7 @@ row_search_check_if_query_cache_permitted(
 	dict_table_t*	table;
 	ibool		ret	= FALSE;
 
-	table = dict_table_get(norm_name);
+	table = dict_table_get(norm_name, FALSE);
 
 	if (table == NULL) {
 

storage/innobase/row/row0upd.c

@@ -202,7 +202,8 @@ row_upd_check_references_constraints(
 				foreign->n_fields))) {
 
 			if (foreign->foreign_table == NULL) {
-				dict_table_get(foreign->foreign_table_name);
+				dict_table_get(foreign->foreign_table_name,
+					       FALSE);
 			}
 
 			if (foreign->foreign_table) {

storage/innobase/srv/srv0start.c

@@ -1601,17 +1601,6 @@ innobase_start_or_create_for_mysql(void)
 	srv_was_started = TRUE;
 	srv_is_being_started = FALSE;
 
-#ifdef UNIV_DEBUG
-	/* Wait a while so that the created threads have time to suspend
-	themselves before we switch sync debugging on; otherwise a thread may
-	execute mutex_enter() before the checks are on, and mutex_exit() after
-	the checks are on, which will cause an assertion failure in sync
-	debug. */
-
-	os_thread_sleep(3000000);
-#endif
-	sync_order_checks_on = TRUE;
-
 	if (trx_doublewrite == NULL) {
 		/* Create the doublewrite buffer to a new tablespace */
 

storage/innobase/sync/sync0rw.c

@@ -89,11 +89,14 @@ void
 rw_lock_create_func(
 /*================*/
 	rw_lock_t*	lock,		/* in: pointer to memory */
-	ulint		level __attribute__((unused)),
-					/* in: level */
+#ifdef UNIV_DEBUG
+# ifdef UNIV_SYNC_DEBUG
+	ulint		level,		/* in: level */
+# endif /* UNIV_SYNC_DEBUG */
+	const char*	cmutex_name, 	/* in: mutex name */
+#endif /* UNIV_DEBUG */
 	const char*	cfile_name,	/* in: file name where created */
-	ulint 		cline,		/* in: file line where created */
-	const char*	cmutex_name) 	/* in: mutex name */
+	ulint 		cline)		/* in: file line where created */
 {
 	/* If this is the very first time a synchronization object is
 	created, then the following call initializes the sync system. */
@@ -103,10 +106,10 @@ rw_lock_create_func(
 	lock->mutex.cfile_name = cfile_name;
 	lock->mutex.cline = cline;
 
-#ifndef UNIV_HOTBACKUP
+#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP
 	lock->mutex.cmutex_name = cmutex_name;
 	lock->mutex.mutex_type = 1;
-#endif /* !UNIV_HOTBACKUP */
+#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */
 
 	rw_lock_set_waiters(lock, 0);
 	rw_lock_set_writer(lock, RW_LOCK_NOT_LOCKED);

storage/innobase/sync/sync0sync.c

@@ -108,8 +108,6 @@ will set the waiters field to 0 in mutex_exit, and then call
 sync_array_signal_object with the mutex as an argument.
 Q.E.D. */
 
-ulint	sync_dummy			= 0;
-
 /* The number of system calls made in this module. Intended for performance
 monitoring. */
 
@@ -133,6 +131,7 @@ ibool	sync_initialized	= FALSE;
 typedef struct sync_level_struct	sync_level_t;
 typedef struct sync_thread_struct	sync_thread_t;
 
+#ifdef UNIV_SYNC_DEBUG
 /* The latch levels currently owned by threads are stored in this data
 structure; the size of this array is OS_THREAD_MAX_N */
 
@@ -140,6 +139,7 @@ sync_thread_t*	sync_thread_level_arrays;
 
 /* Mutex protecting sync_thread_level_arrays */
 mutex_t	sync_thread_mutex;
+#endif /* UNIV_SYNC_DEBUG */
 
 /* Global list of database mutexes (not OS mutexes) created. */
 ut_list_base_node_t  mutex_list;
@@ -147,11 +147,10 @@ ut_list_base_node_t  mutex_list;
 /* Mutex protecting the mutex_list variable */
 mutex_t mutex_list_mutex;
 
+#ifdef UNIV_SYNC_DEBUG
 /* Latching order checks start when this is set TRUE */
 ibool	sync_order_checks_on	= FALSE;
-
-/* Dummy mutex used to implement mutex_fence */
-mutex_t	dummy_mutex_for_fence;
+#endif /* UNIV_SYNC_DEBUG */
 
 struct sync_thread_struct{
 	os_thread_id_t	id;	/* OS thread id */
@@ -202,10 +201,14 @@ void
 mutex_create_func(
 /*==============*/
 	mutex_t*	mutex,		/* in: pointer to memory */
+#ifdef UNIV_DEBUG
+	const char*	cmutex_name,	/* in: mutex name */
+# ifdef UNIV_SYNC_DEBUG
 	ulint		level,		/* in: level */
+# endif /* UNIV_SYNC_DEBUG */
+#endif /* UNIV_DEBUG */
 	const char*	cfile_name,	/* in: file name where created */
-  ulint cline,	/* in: file line where created */
-  const char* cmutex_name)  /* in: mutex name */
+	ulint		cline)		/* in: file line where created */
 {
 #if defined(_WIN32) && defined(UNIV_CAN_USE_X86_ASSEMBLER)
 	mutex_reset_lock_word(mutex);
@@ -214,15 +217,19 @@ mutex_create_func(
 	mutex->lock_word = 0;
 #endif
 	mutex_set_waiters(mutex, 0);
+#ifdef UNIV_DEBUG
 	mutex->magic_n = MUTEX_MAGIC_N;
+#endif /* UNIV_DEBUG */
 #ifdef UNIV_SYNC_DEBUG
 	mutex->line = 0;
 	mutex->file_name = "not yet reserved";
-#endif /* UNIV_SYNC_DEBUG */
 	mutex->level = level;
+#endif /* UNIV_SYNC_DEBUG */
 	mutex->cfile_name = cfile_name;
 	mutex->cline = cline;
 #ifndef UNIV_HOTBACKUP
+	mutex->count_os_wait = 0;
+# ifdef UNIV_DEBUG
 	mutex->cmutex_name=	  cmutex_name;
 	mutex->count_using=	  0;
 	mutex->mutex_type=	  0;
@@ -230,8 +237,8 @@ mutex_create_func(
 	mutex->lmax_spent_time=     0;
 	mutex->count_spin_loop= 0;
 	mutex->count_spin_rounds=   0;
-	mutex->count_os_wait=	  0;
 	mutex->count_os_yield=  0;
+# endif /* UNIV_DEBUG */
 #endif /* !UNIV_HOTBACKUP */
 
 	/* Check that lock_word is aligned; this is important on Intel */
@@ -239,16 +246,19 @@ mutex_create_func(
 
 	/* NOTE! The very first mutexes are not put to the mutex list */
 
-	if ((mutex == &mutex_list_mutex) || (mutex == &sync_thread_mutex)) {
+	if ((mutex == &mutex_list_mutex)
+#ifdef UNIV_SYNC_DEBUG
+	    || (mutex == &sync_thread_mutex)
+#endif /* UNIV_SYNC_DEBUG */
+	    ) {
 
 		return;
 	}
 
 	mutex_enter(&mutex_list_mutex);
 
-	if (UT_LIST_GET_LEN(mutex_list) > 0) {
-		ut_a(UT_LIST_GET_FIRST(mutex_list)->magic_n == MUTEX_MAGIC_N);
-	}
+	ut_ad(UT_LIST_GET_LEN(mutex_list) == 0
+	      || UT_LIST_GET_FIRST(mutex_list)->magic_n == MUTEX_MAGIC_N);
 
 	UT_LIST_ADD_FIRST(list, mutex_list, mutex);
 
@@ -265,24 +275,24 @@ mutex_free(
 /*=======*/
 	mutex_t*	mutex)	/* in: mutex */
 {
-#ifdef UNIV_DEBUG
-	ut_a(mutex_validate(mutex));
-#endif /* UNIV_DEBUG */
+	ut_ad(mutex_validate(mutex));
 	ut_a(mutex_get_lock_word(mutex) == 0);
 	ut_a(mutex_get_waiters(mutex) == 0);
 
-	if (mutex != &mutex_list_mutex && mutex != &sync_thread_mutex) {
+	if (mutex != &mutex_list_mutex
+#ifdef UNIV_SYNC_DEBUG
+	    && mutex != &sync_thread_mutex
+#endif /* UNIV_SYNC_DEBUG */
+	    ) {
 
 		mutex_enter(&mutex_list_mutex);
 
-		if (UT_LIST_GET_PREV(list, mutex)) {
-			ut_a(UT_LIST_GET_PREV(list, mutex)->magic_n
-			     == MUTEX_MAGIC_N);
-		}
-		if (UT_LIST_GET_NEXT(list, mutex)) {
-			ut_a(UT_LIST_GET_NEXT(list, mutex)->magic_n
-			     == MUTEX_MAGIC_N);
-		}
+		ut_ad(!UT_LIST_GET_PREV(list, mutex)
+		      || UT_LIST_GET_PREV(list, mutex)->magic_n
+		      == MUTEX_MAGIC_N);
+		ut_ad(!UT_LIST_GET_NEXT(list, mutex)
+		      || UT_LIST_GET_NEXT(list, mutex)->magic_n
+		      == MUTEX_MAGIC_N);
 
 		UT_LIST_REMOVE(list, mutex_list, mutex);
 
@@ -295,8 +305,9 @@ mutex_free(
 	/* If we free the mutex protecting the mutex list (freeing is
 	not necessary), we have to reset the magic number AFTER removing
 	it from the list. */
-
+#ifdef UNIV_DEBUG
 	mutex->magic_n = 0;
+#endif /* UNIV_DEBUG */
 }
 
 /************************************************************************
@@ -328,6 +339,7 @@ mutex_enter_nowait(
 	return(1);
 }
 
+#ifdef UNIV_DEBUG
 /**********************************************************************
 Checks that the mutex has been initialized. */
 
@@ -341,6 +353,7 @@ mutex_validate(
 
 	return(TRUE);
 }
+#endif /* UNIV_DEBUG */
 
 /**********************************************************************
 Sets the waiters field in a mutex. */
@@ -376,13 +389,13 @@ mutex_spin_wait(
 {
 	ulint	   index; /* index of the reserved wait cell */
 	ulint	   i;	  /* spin round count */
-#ifndef UNIV_HOTBACKUP
+#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP
 	ib_longlong lstart_time = 0, lfinish_time; /* for timing os_wait */
 	ulint ltime_diff;
 	ulint sec;
 	ulint ms;
 	uint timer_started = 0;
-#endif /* !UNIV_HOTBACKUP */
+#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */
 	ut_ad(mutex);
 
 mutex_loop:
@@ -396,10 +409,10 @@ mutex_spin_wait(
 	a memory word. */
 
 spin_loop:
-#ifndef UNIV_HOTBACKUP
+#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP
 	mutex_spin_wait_count++;
 	mutex->count_spin_loop++;
-#endif /* !UNIV_HOTBACKUP */
+#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */
 
 	while (mutex_get_lock_word(mutex) != 0 && i < SYNC_SPIN_ROUNDS) {
 		if (srv_spin_wait_delay) {
@@ -410,14 +423,14 @@ mutex_spin_wait(
 	}
 
 	if (i == SYNC_SPIN_ROUNDS) {
-#ifndef UNIV_HOTBACKUP
+#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP
 		mutex->count_os_yield++;
 		if (timed_mutexes == 1 && timer_started==0) {
 			ut_usectime(&sec, &ms);
 			lstart_time= (ib_longlong)sec * 1000000 + ms;
 			timer_started = 1;
 		}
-#endif /* !UNIV_HOTBACKUP */
+#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */
 		os_thread_yield();
 	}
 
@@ -431,9 +444,9 @@ mutex_spin_wait(
 
 	mutex_spin_round_count += i;
 
-#ifndef UNIV_HOTBACKUP
+#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP
 	mutex->count_spin_rounds += i;
-#endif /* !UNIV_HOTBACKUP */
+#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */
 
 	if (mutex_test_and_set(mutex) == 0) {
 		/* Succeeded! */
@@ -514,6 +527,7 @@ mutex_spin_wait(
 
 #ifndef UNIV_HOTBACKUP
 	mutex->count_os_wait++;
+# ifdef UNIV_DEBUG
 	/* !!!!! Sometimes os_wait can be called without os_thread_yield */
 
 	if (timed_mutexes == 1 && timer_started==0) {
@@ -521,13 +535,14 @@ mutex_spin_wait(
 		lstart_time= (ib_longlong)sec * 1000000 + ms;
 		timer_started = 1;
 	}
+# endif /* UNIV_DEBUG */
 #endif /* !UNIV_HOTBACKUP */
 
 	sync_array_wait_event(sync_primary_wait_array, index);
 	goto mutex_loop;
 
 finish_timing:
-#ifndef UNIV_HOTBACKUP
+#if defined UNIV_DEBUG && !defined UNIV_HOTBACKUP
 	if (timed_mutexes == 1 && timer_started==1) {
 		ut_usectime(&sec, &ms);
 		lfinish_time= (ib_longlong)sec * 1000000 + ms;
@@ -539,7 +554,7 @@ mutex_spin_wait(
 			mutex->lmax_spent_time= ltime_diff;
 		}
 	}
-#endif /* !UNIV_HOTBACKUP */
+#endif /* UNIV_DEBUG && !UNIV_HOTBACKUP */
 	return;
 }
 
@@ -598,9 +613,7 @@ mutex_get_debug_info(
 	*line	   = mutex->line;
 	*thread_id = mutex->thread_id;
 }
-#endif /* UNIV_SYNC_DEBUG */
 
-#ifdef UNIV_SYNC_DEBUG
 /**********************************************************************
 Checks that the current thread owns the mutex. Works only in the debug
 version. */
@@ -611,7 +624,7 @@ mutex_own(
 				/* out: TRUE if owns */
 	mutex_t*	mutex)	/* in: mutex */
 {
-	ut_a(mutex_validate(mutex));
+	ut_ad(mutex_validate(mutex));
 
 	if (mutex_get_lock_word(mutex) != 1) {
 
@@ -710,7 +723,6 @@ sync_all_freed(void)
 {
 	return(mutex_n_reserved() + rw_lock_n_locked() == 0);
 }
-#endif /* UNIV_SYNC_DEBUG */
 
 /**********************************************************************
 Gets the value in the nth slot in the thread level arrays. */
@@ -834,7 +846,6 @@ sync_thread_levels_g(
 						(ulong) mutex->cline);
 
 					if (mutex_get_lock_word(mutex) != 0) {
-#ifdef UNIV_SYNC_DEBUG
 						const char*	file_name;
 						ulint		line;
 						os_thread_id_t	thread_id;
@@ -852,19 +863,11 @@ sync_thread_levels_g(
 								thread_id),
 							file_name,
 							(ulong) line);
-#else /* UNIV_SYNC_DEBUG */
-						fprintf(stderr,
-							"InnoDB: Locked mutex:"
-							" addr %p\n",
-							(void*) mutex);
-#endif /* UNIV_SYNC_DEBUG */
 					} else {
 						fputs("Not locked\n", stderr);
 					}
 				} else {
-#ifdef UNIV_SYNC_DEBUG
 					rw_lock_print(lock);
-#endif /* UNIV_SYNC_DEBUG */
 				}
 
 				return(FALSE);
@@ -996,9 +999,7 @@ sync_thread_add_level(
 
 	if ((latch == (void*)&sync_thread_mutex)
 	    || (latch == (void*)&mutex_list_mutex)
-#ifdef UNIV_SYNC_DEBUG
 	    || (latch == (void*)&rw_lock_debug_mutex)
-#endif /* UNIV_SYNC_DEBUG */
 	    || (latch == (void*)&rw_lock_list_mutex)) {
 
 		return;
@@ -1219,9 +1220,7 @@ sync_thread_reset_level(
 
 	if ((latch == (void*)&sync_thread_mutex)
 	    || (latch == (void*)&mutex_list_mutex)
-#ifdef UNIV_SYNC_DEBUG
 	    || (latch == (void*)&rw_lock_debug_mutex)
-#endif /* UNIV_SYNC_DEBUG */
 	    || (latch == (void*)&rw_lock_list_mutex)) {
 
 		return(FALSE);
@@ -1260,6 +1259,7 @@ sync_thread_reset_level(
 
 	return(FALSE);
 }
+#endif /* UNIV_SYNC_DEBUG */
 
 /**********************************************************************
 Initializes the synchronization data structures. */
@@ -1268,8 +1268,10 @@ void
 sync_init(void)
 /*===========*/
 {
+#ifdef UNIV_SYNC_DEBUG
 	sync_thread_t*	thread_slot;
 	ulint		i;
+#endif /* UNIV_SYNC_DEBUG */
 
 	ut_a(sync_initialized == FALSE);
 
@@ -1280,7 +1282,7 @@ sync_init(void)
 
 	sync_primary_wait_array = sync_array_create(OS_THREAD_MAX_N,
 						    SYNC_ARRAY_OS_MUTEX);
-
+#ifdef UNIV_SYNC_DEBUG
 	/* Create the thread latch level array where the latch levels
 	are stored for each OS thread */
 
@@ -1291,13 +1293,14 @@ sync_init(void)
 		thread_slot = sync_thread_level_arrays_get_nth(i);
 		thread_slot->levels = NULL;
 	}
-
+#endif /* UNIV_SYNC_DEBUG */
 	/* Init the mutex list and create the mutex to protect it. */
 
 	UT_LIST_INIT(mutex_list);
 	mutex_create(&mutex_list_mutex, SYNC_NO_ORDER_CHECK);
-
+#ifdef UNIV_SYNC_DEBUG
 	mutex_create(&sync_thread_mutex, SYNC_NO_ORDER_CHECK);
+#endif /* UNIV_SYNC_DEBUG */
 
 	/* Init the rw-lock list and create the mutex to protect it. */
 
@@ -1332,7 +1335,9 @@ sync_close(void)
 	}
 
 	mutex_free(&mutex_list_mutex);
+#ifdef UNIV_SYNC_DEBUG
 	mutex_free(&sync_thread_mutex);
+#endif /* UNIV_SYNC_DEBUG */
 }
 
 /***********************************************************************

storage/innobase/trx/trx0roll.c

@@ -131,8 +131,26 @@ trx_rollback_for_mysql(
 
 	trx->op_info = "rollback";
 
-	err = trx_general_rollback_for_mysql(trx, FALSE, NULL);
+	/* If we are doing the XA recovery of prepared transactions, then
+	the transaction object does not have an InnoDB session object, and we
+	set a dummy session that we use for all MySQL transactions. */
+
+	mutex_enter(&kernel_mutex);
+
+	if (trx->sess == NULL) {
+		/* Open a dummy session */
+
+		if (!trx_dummy_sess) {
+			trx_dummy_sess = sess_open();
+		}
 
+		trx->sess = trx_dummy_sess;
+	}
+
+	mutex_exit(&kernel_mutex);
+
+	err = trx_general_rollback_for_mysql(trx, FALSE, NULL);
+	
 	trx->op_info = "";
 
 	return(err);

storage/innobase/trx/trx0trx.c

@@ -1598,6 +1598,24 @@ trx_commit_for_mysql(
 
 	trx->op_info = "committing";
 
+	/* If we are doing the XA recovery of prepared transactions, then
+	the transaction object does not have an InnoDB session object, and we
+	set the dummy session that we use for all MySQL transactions. */
+
+	mutex_enter(&kernel_mutex);
+
+	if (trx->sess == NULL) {
+		/* Open a dummy session */
+
+		if (!trx_dummy_sess) {
+			trx_dummy_sess = sess_open();
+		}
+
+		trx->sess = trx_dummy_sess;
+	}
+	
+	mutex_exit(&kernel_mutex);
+
 	trx_start_if_not_started(trx);
 
 	mutex_enter(&kernel_mutex);
@@ -1761,11 +1779,10 @@ trx_print(
 	    || mem_heap_get_size(trx->lock_heap) > 400) {
 		newline = TRUE;
 
-		fprintf(f, "%lu lock struct(s), heap size %lu",
+		fprintf(f, "%lu lock struct(s), heap size %lu,"
+			" %lu row lock(s)",
 			(ulong) UT_LIST_GET_LEN(trx->trx_locks),
-			(ulong) mem_heap_get_size(trx->lock_heap));
-
-		fprintf(f, "%lu row lock(s)",
+			(ulong) mem_heap_get_size(trx->lock_heap),
 			(ulong) lock_number_of_rows_locked(trx));
 	}