Bug#11766305 - 59392: Remove thr0loc.c and ibuf_inside() [part 4 of 4]

ibuf_inside(), ibuf_enter(), ibuf_exit(): Add the parameter mtr. The
flag is no longer kept in the thread-local storage but in the
mini-transaction (mtr->inside_ibuf).

mtr_start(): Clean up the comment and remove the unused return value.
mtr_commit(): Assert !ibuf_inside(mtr) in debug builds.

ibuf_mtr_start(): Like mtr_start(), but sets the flag.
ibuf_mtr_commit(), ibuf_btr_pcur_commit_specify_mtr(): Wrappers that
assert ibuf_inside().

buf_page_get_zip(), buf_page_init_for_read(),
buf_read_ibuf_merge_pages(), fil_io(), ibuf_free_excess_pages(),
ibuf_contract_ext(): Remove assertions on ibuf_inside(), because a
mini-transaction is not available.

buf_read_ahead_linear(): Add the parameter inside_ibuf.

ibuf_restore_pos(): When this function returns FALSE, it commits mtr
and must therefore do ibuf_exit(mtr).

ibuf_delete_rec(): This function commits mtr and must therefore do
ibuf_exit(mtr).

ibuf_rec_get_page_no(), ibuf_rec_get_space(), ibuf_rec_get_info(),
ibuf_rec_get_op_type(), ibuf_build_entry_from_ibuf_rec(),
ibuf_rec_get_volume(), ibuf_get_merge_page_nos(),
ibuf_get_volume_buffered_count(), ibuf_get_entry_counter_low(): Add
the parameter mtr in debug builds, for asserting ibuf_inside(mtr).

rb:585 approved by Sunny Bains

storage/innobase/CMakeLists.txt

@@ -241,7 +241,6 @@ SET(INNOBASE_SOURCES	btr/btr0btr.c btr/btr0cur.c btr/btr0pcur.c btr/btr0sea.c
 			row/row0sel.c row/row0uins.c row/row0umod.c row/row0undo.c row/row0upd.c row/row0vers.c
 			srv/srv0srv.c srv/srv0start.c
 			sync/sync0arr.c sync/sync0rw.c sync/sync0sync.c
-			thr/thr0loc.c
 			trx/trx0i_s.c trx/trx0purge.c trx/trx0rec.c trx/trx0roll.c trx/trx0rseg.c
 			trx/trx0sys.c trx/trx0trx.c trx/trx0undo.c
 			usr/usr0sess.c

storage/innobase/btr/btr0cur.c

@@ -402,7 +402,7 @@ btr_cur_search_to_nth_level(
 
 	ut_ad(level == 0 || mode == PAGE_CUR_LE);
 	ut_ad(dict_index_check_search_tuple(index, tuple));
-	ut_ad(!dict_index_is_ibuf(index) || ibuf_inside());
+	ut_ad(!dict_index_is_ibuf(index) || ibuf_inside(mtr));
 	ut_ad(dtuple_check_typed(tuple));
 
 #ifdef UNIV_DEBUG

storage/innobase/buf/buf0buf.c

@@ -2316,9 +2316,6 @@ buf_page_get_zip(
 	unsigned	access_time;
 	buf_pool_t*	buf_pool = buf_pool_get(space, offset);
 
-#ifndef UNIV_LOG_DEBUG
-	ut_ad(!ibuf_inside());
-#endif
 	buf_pool->stat.n_page_gets++;
 
 	for (;;) {
@@ -2758,8 +2755,9 @@ buf_page_get_gen(
 	ut_ad(zip_size == fil_space_get_zip_size(space));
 	ut_ad(ut_is_2pow(zip_size));
 #ifndef UNIV_LOG_DEBUG
-	ut_ad(!ibuf_inside() || ibuf_page_low(space, zip_size, offset,
-					      FALSE, file, line, NULL));
+	ut_ad(!ibuf_inside(mtr)
+	      || ibuf_page_low(space, zip_size, offset,
+			       FALSE, file, line, NULL));
 #endif
 	buf_pool->stat.n_page_gets++;
 	fold = buf_page_address_fold(space, offset);
@@ -3132,7 +3130,8 @@ wait_until_unfixed:
 		/* In the case of a first access, try to apply linear
 		read-ahead */
 
-		buf_read_ahead_linear(space, zip_size, offset);
+		buf_read_ahead_linear(space, zip_size, offset,
+				      ibuf_inside(mtr));
 	}
 
 #ifdef UNIV_IBUF_COUNT_DEBUG
@@ -3189,7 +3188,7 @@ buf_page_optimistic_get(
 	access_time = buf_page_is_accessed(&block->page);
 	buf_page_set_accessed_make_young(&block->page, access_time);
 
-	ut_ad(!ibuf_inside()
+	ut_ad(!ibuf_inside(mtr)
 	      || ibuf_page(buf_block_get_space(block),
 			   buf_block_get_zip_size(block),
 			   buf_block_get_page_no(block), NULL));
@@ -3245,7 +3244,8 @@ buf_page_optimistic_get(
 
 		buf_read_ahead_linear(buf_block_get_space(block),
 				      buf_block_get_zip_size(block),
-				      buf_block_get_page_no(block));
+				      buf_block_get_page_no(block),
+				      ibuf_inside(mtr));
 	}
 
 #ifdef UNIV_IBUF_COUNT_DEBUG
@@ -3321,7 +3321,7 @@ buf_page_get_known_nowait(
 		buf_pool_mutex_exit(buf_pool);
 	}
 
-	ut_ad(!ibuf_inside() || (mode == BUF_KEEP_OLD));
+	ut_ad(!ibuf_inside(mtr) || mode == BUF_KEEP_OLD);
 
 	if (rw_latch == RW_S_LATCH) {
 		success = rw_lock_s_lock_nowait(&(block->lock),
@@ -3586,14 +3586,13 @@ buf_page_init_for_read(
 		/* It is a read-ahead within an ibuf routine */
 
 		ut_ad(!ibuf_bitmap_page(zip_size, offset));
-		ut_ad(ibuf_inside());
 
-		mtr_start(&mtr);
+		ibuf_mtr_start(&mtr);
 
 		if (!recv_no_ibuf_operations
 		    && !ibuf_page(space, zip_size, offset, &mtr)) {
 
-			mtr_commit(&mtr);
+			ibuf_mtr_commit(&mtr);
 
 			return(NULL);
 		}
@@ -3778,7 +3777,7 @@ func_exit:
 
 	if (mode == BUF_READ_IBUF_PAGES_ONLY) {
 
-		mtr_commit(&mtr);
+		ibuf_mtr_commit(&mtr);
 	}
 
 	ut_ad(!bpage || buf_page_in_file(bpage));

storage/innobase/buf/buf0rea.c

@@ -236,10 +236,10 @@ UNIV_INTERN
 ulint
 buf_read_ahead_linear(
 /*==================*/
-	ulint	space,	/*!< in: space id */
-	ulint	zip_size,/*!< in: compressed page size in bytes, or 0 */
-	ulint	offset)	/*!< in: page number of a page; NOTE: the current thread
-			must want access to this page (see NOTE 3 above) */
+	ulint	space,		/*!< in: space id */
+	ulint	zip_size,	/*!< in: compressed page size in bytes, or 0 */
+	ulint	offset,		/*!< in: page number; see NOTE 3 above */
+	ibool	inside_ibuf)	/*!< in: TRUE if we are inside ibuf routine */
 {
 	buf_pool_t*	buf_pool = buf_pool_get(space, offset);
 	ib_int64_t	tablespace_version;
@@ -429,11 +429,9 @@ buf_read_ahead_linear(
 
 	/* If we got this far, read-ahead can be sensible: do it */
 
-	if (ibuf_inside()) {
-		ibuf_mode = BUF_READ_IBUF_PAGES_ONLY;
-	} else {
-		ibuf_mode = BUF_READ_ANY_PAGE;
-	}
+	ibuf_mode = inside_ibuf
+		? BUF_READ_IBUF_PAGES_ONLY | OS_AIO_SIMULATED_WAKE_LATER
+		: BUF_READ_ANY_PAGE | OS_AIO_SIMULATED_WAKE_LATER;
 
 	count = 0;
 
@@ -450,7 +448,7 @@ buf_read_ahead_linear(
 		if (!ibuf_bitmap_page(zip_size, i)) {
 			count += buf_read_page_low(
 				&err, FALSE,
-				ibuf_mode | OS_AIO_SIMULATED_WAKE_LATER,
+				ibuf_mode,
 				space, zip_size, FALSE, tablespace_version, i);
 			if (err == DB_TABLESPACE_DELETED) {
 				ut_print_timestamp(stderr);
@@ -520,7 +518,6 @@ buf_read_ibuf_merge_pages(
 {
 	ulint	i;
 
-	ut_ad(!ibuf_inside());
 #ifdef UNIV_IBUF_DEBUG
 	ut_a(n_stored < UNIV_PAGE_SIZE);
 #endif

storage/innobase/fil/fil0fil.c

@@ -4342,8 +4342,6 @@ fil_io(
 	ut_ad(recv_no_ibuf_operations || (type == OS_FILE_WRITE)
 	      || !ibuf_bitmap_page(zip_size, block_offset)
 	      || sync || is_log);
-	ut_ad(!ibuf_inside() || is_log || (type == OS_FILE_WRITE)
-	      || ibuf_page(space_id, zip_size, block_offset, NULL));
 # endif /* UNIV_LOG_DEBUG */
 	if (sync) {
 		mode = OS_AIO_SYNC;

storage/innobase/handler/ha_innodb.cc

@@ -82,7 +82,6 @@ extern "C" {
 #include "fil0fil.h"
 #include "trx0xa.h"
 #include "row0merge.h"
-#include "thr0loc.h"
 #include "dict0boot.h"
 #include "ha_prototypes.h"
 #include "ut0mem.h"
@@ -280,7 +279,6 @@ static PSI_mutex_info all_innodb_mutexes[] = {
 	{&sync_thread_mutex_key, "sync_thread_mutex", 0},
 #  endif /* UNIV_SYNC_DEBUG */
 	{&trx_doublewrite_mutex_key, "trx_doublewrite_mutex", 0},
-	{&thr_local_mutex_key, "thr_local_mutex", 0},
 	{&trx_undo_mutex_key, "trx_undo_mutex", 0}
 };
 # endif /* UNIV_PFS_MUTEX */
@@ -3042,7 +3040,6 @@ innobase_close_connection(
 
 	innobase_rollback_trx(trx);
 
-	thr_local_free(trx->mysql_thread_id);
 	trx_free_for_mysql(trx);
 
 	DBUG_RETURN(0);

storage/innobase/include/buf0rea.h

@@ -70,10 +70,10 @@ UNIV_INTERN
 ulint
 buf_read_ahead_linear(
 /*==================*/
-	ulint	space,	/*!< in: space id */
-	ulint	zip_size,/*!< in: compressed page size in bytes, or 0 */
-	ulint	offset);/*!< in: page number of a page; NOTE: the current thread
-			must want access to this page (see NOTE 3 above) */
+	ulint	space,		/*!< in: space id */
+	ulint	zip_size,	/*!< in: compressed page size in bytes, or 0 */
+	ulint	offset,		/*!< in: page number; see NOTE 3 above */
+	ibool	inside_ibuf);	/*!< in: TRUE if we are inside ibuf routine */
 /********************************************************************//**
 Issues read requests for pages which the ibuf module wants to read in, in
 order to contract the insert buffer tree. Technically, this function is like

storage/innobase/include/ibuf0ibuf.h

@@ -104,6 +104,22 @@ UNIV_INTERN
 void
 ibuf_update_max_tablespace_id(void);
 /*===============================*/
+/***************************************************************//**
+Starts an insert buffer mini-transaction. */
+UNIV_INLINE
+void
+ibuf_mtr_start(
+/*===========*/
+	mtr_t*	mtr)	/*!< out: mini-transaction */
+	__attribute__((nonnull));
+/***************************************************************//**
+Commits an insert buffer mini-transaction. */
+UNIV_INLINE
+void
+ibuf_mtr_commit(
+/*============*/
+	mtr_t*	mtr)	/*!< in/out: mini-transaction */
+	__attribute__((nonnull));
 /*********************************************************************//**
 Initializes an ibuf bitmap page. */
 UNIV_INTERN
@@ -224,10 +240,12 @@ routine.
 For instance, a read-ahead of non-ibuf pages is forbidden by threads
 that are executing an insert buffer routine.
 @return TRUE if inside an insert buffer routine */
-UNIV_INTERN
+UNIV_INLINE
 ibool
-ibuf_inside(void);
-/*=============*/
+ibuf_inside(
+/*========*/
+	const mtr_t*	mtr)	/*!< in: mini-transaction */
+	__attribute__((nonnull, pure));
 /***********************************************************************//**
 Checks if a page address is an ibuf bitmap page (level 3 page) address.
 @return	TRUE if a bitmap page */

storage/innobase/include/ibuf0ibuf.ic

@@ -37,6 +37,30 @@ buffer inserts to this page.  If there is this much of free space, the
 corresponding bits are set in the ibuf bitmap. */
 #define IBUF_PAGE_SIZE_PER_FREE_SPACE	32
 
+/***************************************************************//**
+Starts an insert buffer mini-transaction. */
+UNIV_INLINE
+void
+ibuf_mtr_start(
+/*===========*/
+	mtr_t*	mtr)	/*!< out: mini-transaction */
+{
+	mtr_start(mtr);
+	mtr->inside_ibuf = TRUE;
+}
+/***************************************************************//**
+Commits an insert buffer mini-transaction. */
+UNIV_INLINE
+void
+ibuf_mtr_commit(
+/*============*/
+	mtr_t*	mtr)	/*!< in/out: mini-transaction */
+{
+	ut_ad(mtr->inside_ibuf);
+	ut_d(mtr->inside_ibuf = FALSE);
+	mtr_commit(mtr);
+}
+
 /** Insert buffer struct */
 struct ibuf_struct{
 	ulint		size;		/*!< current size of the ibuf index
@@ -120,6 +144,22 @@ ibuf_should_try(
 	return(FALSE);
 }
 
+/******************************************************************//**
+Returns TRUE if the current OS thread is performing an insert buffer
+routine.
+
+For instance, a read-ahead of non-ibuf pages is forbidden by threads
+that are executing an insert buffer routine.
+@return TRUE if inside an insert buffer routine */
+UNIV_INLINE
+ibool
+ibuf_inside(
+/*========*/
+	const mtr_t*	mtr)	/*!< in: mini-transaction */
+{
+	return(mtr->inside_ibuf);
+}
+
 /***********************************************************************//**
 Checks if a page address is an ibuf bitmap page address.
 @return	TRUE if a bitmap page */

storage/innobase/include/mtr0mtr.h

@@ -190,21 +190,21 @@ functions).  The page number parameter was originally written as 0. @{ */
 /* @} */
 
 /***************************************************************//**
-Starts a mini-transaction and creates a mini-transaction handle
-and buffer in the memory buffer given by the caller.
-@return	mtr buffer which also acts as the mtr handle */
+Starts a mini-transaction. */
 UNIV_INLINE
-mtr_t*
+void
 mtr_start(
 /*======*/
-	mtr_t*	mtr);	/*!< in: memory buffer for the mtr buffer */
+	mtr_t*	mtr)	/*!< out: mini-transaction */
+	__attribute__((nonnull));
 /***************************************************************//**
 Commits a mini-transaction. */
 UNIV_INTERN
 void
 mtr_commit(
 /*=======*/
-	mtr_t*	mtr);	/*!< in: mini-transaction */
+	mtr_t*	mtr)	/*!< in/out: mini-transaction */
+	__attribute__((nonnull));
 /**********************************************************//**
 Sets and returns a savepoint in mtr.
 @return	savepoint */
@@ -378,6 +378,8 @@ struct mtr_struct{
 #endif
 	dyn_array_t	memo;	/*!< memo stack for locks etc. */
 	dyn_array_t	log;	/*!< mini-transaction log */
+	ibool		inside_ibuf;
+				/*!< TRUE if inside ibuf changes */
 	ibool		modifications;
 				/* TRUE if the mtr made modifications to
 				buffer pool pages */

storage/innobase/include/mtr0mtr.ic

@@ -30,26 +30,23 @@ Created 11/26/1995 Heikki Tuuri
 #include "mach0data.h"
 
 /***************************************************************//**
-Starts a mini-transaction and creates a mini-transaction handle
-and a buffer in the memory buffer given by the caller.
-@return	mtr buffer which also acts as the mtr handle */
+Starts a mini-transaction. */
 UNIV_INLINE
-mtr_t*
+void
 mtr_start(
 /*======*/
-	mtr_t*	mtr)	/*!< in: memory buffer for the mtr buffer */
+	mtr_t*	mtr)	/*!< out: mini-transaction */
 {
 	dyn_array_create(&(mtr->memo));
 	dyn_array_create(&(mtr->log));
 
 	mtr->log_mode = MTR_LOG_ALL;
 	mtr->modifications = FALSE;
+	mtr->inside_ibuf = FALSE;
 	mtr->n_log_recs = 0;
 
 	ut_d(mtr->state = MTR_ACTIVE);
 	ut_d(mtr->magic_n = MTR_MAGIC_N);
-
-	return(mtr);
 }
 
 /***************************************************//**

storage/innobase/include/sync0sync.h

@@ -110,7 +110,6 @@ extern mysql_pfs_key_t	syn_arr_mutex_key;
 extern mysql_pfs_key_t	sync_thread_mutex_key;
 # endif /* UNIV_SYNC_DEBUG */
 extern mysql_pfs_key_t	trx_doublewrite_mutex_key;
-extern mysql_pfs_key_t	thr_local_mutex_key;
 extern mysql_pfs_key_t	trx_undo_mutex_key;
 #endif /* UNIV_PFS_MUTEX */
 

storage/innobase/include/thr0loc.h

-/*****************************************************************************
-
-Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
-
-This program is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free Software
-Foundation; version 2 of the License.
-
-This program is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with
-this program; if not, write to the Free Software Foundation, Inc., 59 Temple
-Place, Suite 330, Boston, MA 02111-1307 USA
-
-*****************************************************************************/
-
-/**************************************************//**
-@file include/thr0loc.h
-The thread local storage
-
-Created 10/5/1995 Heikki Tuuri
-*******************************************************/
-
-/* This module implements storage private to each thread,
-a capability useful in some situations like storing the
-OS handle to the current thread, or its priority. */
-
-#ifndef thr0loc_h
-#define thr0loc_h
-
-#include "univ.i"
-#include "os0thread.h"
-
-/****************************************************************//**
-Initializes the thread local storage module. */
-UNIV_INTERN
-void
-thr_local_init(void);
-/*================*/
- /****************************************************************//**
-Close the thread local storage module. */
-UNIV_INTERN
-void
-thr_local_close(void);
-/*=================*/
-/*******************************************************************//**
-Creates a local storage struct for the calling new thread. */
-UNIV_INTERN
-void
-thr_local_create(void);
-/*==================*/
-/*******************************************************************//**
-Frees the local storage struct for the specified thread. */
-UNIV_INTERN
-void
-thr_local_free(
-/*===========*/
-	os_thread_id_t	id);	/*!< in: thread id */
-/*******************************************************************//**
-Returns pointer to the 'in_ibuf' field within the current thread local
-storage.
-@return	pointer to the in_ibuf field */
-UNIV_INTERN
-ibool*
-thr_local_get_in_ibuf_field(void);
-/*=============================*/
-
-#ifndef UNIV_NONINL
-#include "thr0loc.ic"
-#endif
-
-#endif

storage/innobase/include/thr0loc.ic

-/*****************************************************************************
-
-Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
-
-This program is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free Software
-Foundation; version 2 of the License.
-
-This program is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with
-this program; if not, write to the Free Software Foundation, Inc., 59 Temple
-Place, Suite 330, Boston, MA 02111-1307 USA
-
-*****************************************************************************/
-
-/**************************************************//**
-@file include/thr0loc.ic
-Thread local storage
-
-Created 10/4/1995 Heikki Tuuri
-*******************************************************/

storage/innobase/mtr/mtr0mtr.c

@@ -251,6 +251,7 @@ mtr_commit(
 	ut_ad(mtr);
 	ut_ad(mtr->magic_n == MTR_MAGIC_N);
 	ut_ad(mtr->state == MTR_ACTIVE);
+	ut_ad(!mtr->inside_ibuf);
 	ut_d(mtr->state = MTR_COMMITTING);
 
 #ifndef UNIV_HOTBACKUP

storage/innobase/srv/srv0srv.c

@@ -66,7 +66,6 @@ Created 10/8/1995 Heikki Tuuri
 #include "mem0mem.h"
 #include "mem0pool.h"
 #include "sync0sync.h"
-#include "thr0loc.h"
 #include "que0que.h"
 #include "log0recv.h"
 #include "pars0pars.h"
@@ -1129,7 +1128,6 @@ srv_general_init(void)
 	os_sync_init();
 	sync_init();
 	mem_init(srv_mem_pool_size);
-	thr_local_init();
 }
 
 /*======================= InnoDB Server FIFO queue =======================*/
@@ -3071,8 +3069,6 @@ suspend_thread:
 	main thread goes back to loop. */
 
 	goto loop;
-
-	OS_THREAD_DUMMY_RETURN;	/* Not reached, avoid compiler warning */
 }
 
 /*********************************************************************//**

storage/innobase/srv/srv0start.c

@@ -85,7 +85,6 @@ Created 2/16/1996 Heikki Tuuri
 # include "row0row.h"
 # include "row0mysql.h"
 # include "btr0pcur.h"
-# include "thr0loc.h"
 # include "os0sync.h" /* for INNODB_RW_LOCKS_USE_ATOMICS */
 # include "zlib.h" /* for ZLIB_VERSION */
 
@@ -2210,7 +2209,6 @@ innobase_shutdown_for_mysql(void)
 	ibuf_close();
 	log_shutdown();
 	lock_sys_close();
-	thr_local_close();
 	trx_sys_file_format_close();
 	trx_sys_close();
 

storage/innobase/thr/thr0loc.c

-/*****************************************************************************
-
-Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
-
-This program is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free Software
-Foundation; version 2 of the License.
-
-This program is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with
-this program; if not, write to the Free Software Foundation, Inc., 59 Temple
-Place, Suite 330, Boston, MA 02111-1307 USA
-
-*****************************************************************************/
-
-/**************************************************//**
-@file thr/thr0loc.c
-The thread local storage
-
-Created 10/5/1995 Heikki Tuuri
-*******************************************************/
-
-#include "thr0loc.h"
-#ifdef UNIV_NONINL
-#include "thr0loc.ic"
-#endif
-
-#include "sync0sync.h"
-#include "hash0hash.h"
-#include "mem0mem.h"
-#include "srv0srv.h"
-
-/*
-	IMPLEMENTATION OF THREAD LOCAL STORAGE
-	======================================
-
-The threads sometimes need private data which depends on the thread id.
-This is implemented as a hash table, where the hash value is calculated
-from the thread id, to prepare for a large number of threads. The hash table
-is protected by a mutex. If you need modify the program and put new data to
-the thread local storage, just add it to struct thr_local_struct in the
-header file. */
-
-/** Mutex protecting thr_local_hash */
-static mutex_t		thr_local_mutex;
-
-/** The hash table. The module is not yet initialized when it is NULL. */
-static hash_table_t*	thr_local_hash	= NULL;
-
-/** Thread local data */
-typedef struct thr_local_struct thr_local_t;
-
-#ifdef UNIV_PFS_MUTEX
-/* Key to register the mutex with performance schema */
-UNIV_INTERN mysql_pfs_key_t	thr_local_mutex_key;
-#endif /* UNIV_PFS_MUTEX */
-
-/** @brief Thread local data.
-The private data for each thread should be put to
-the structure below and the accessor functions written
-for the field. */
-struct thr_local_struct{
-	os_thread_id_t	id;	/*!< id of the thread which owns this struct */
-	os_thread_t	handle;	/*!< operating system handle to the thread */
-	ibool		in_ibuf;/*!< TRUE if the thread is doing an ibuf
-				operation */
-	hash_node_t	hash;	/*!< hash chain node */
-	ulint		magic_n;/*!< magic number (THR_LOCAL_MAGIC_N) */
-};
-
-/** The value of thr_local_struct::magic_n */
-#define THR_LOCAL_MAGIC_N	1231234
-
-#ifdef UNIV_DEBUG
-/*******************************************************************//**
-Validates thread local data.
-@return	TRUE if valid */
-static
-ibool
-thr_local_validate(
-/*===============*/
-	const thr_local_t*	local)	/*!< in: data to validate */
-{
-	ut_ad(local->magic_n == THR_LOCAL_MAGIC_N);
-	ut_ad(local->in_ibuf == FALSE || local->in_ibuf == TRUE);
-	return(TRUE);
-}
-#endif /* UNIV_DEBUG */
-
-/*******************************************************************//**
-Returns the local storage struct for a thread.
-@return	local storage */
-static
-thr_local_t*
-thr_local_get(
-/*==========*/
-	os_thread_id_t	id)	/*!< in: thread id of the thread */
-{
-	thr_local_t*	local;
-
-try_again:
-	ut_ad(thr_local_hash);
-	ut_ad(mutex_own(&thr_local_mutex));
-
-	/* Look for the local struct in the hash table */
-
-	local = NULL;
-
-	HASH_SEARCH(hash, thr_local_hash, os_thread_pf(id),
-		    thr_local_t*, local, ut_ad(thr_local_validate(local)),
-		    os_thread_eq(local->id, id));
-	if (local == NULL) {
-		mutex_exit(&thr_local_mutex);
-
-		thr_local_create();
-
-		mutex_enter(&thr_local_mutex);
-
-		goto try_again;
-	}
-
-	ut_ad(thr_local_validate(local));
-
-	return(local);
-}
-
-/*******************************************************************//**
-Returns pointer to the 'in_ibuf' field within the current thread local
-storage.
-@return	pointer to the in_ibuf field */
-UNIV_INTERN
-ibool*
-thr_local_get_in_ibuf_field(void)
-/*=============================*/
-{
-	thr_local_t*	local;
-
-	mutex_enter(&thr_local_mutex);
-
-	local = thr_local_get(os_thread_get_curr_id());
-
-	mutex_exit(&thr_local_mutex);
-
-	return(&(local->in_ibuf));
-}
-
-/*******************************************************************//**
-Creates a local storage struct for the calling new thread. */
-UNIV_INTERN
-void
-thr_local_create(void)
-/*==================*/
-{
-	thr_local_t*	local;
-
-	if (thr_local_hash == NULL) {
-		thr_local_init();
-	}
-
-	local = mem_alloc(sizeof(thr_local_t));
-
-	local->id = os_thread_get_curr_id();
-	local->handle = os_thread_get_curr();
-	local->magic_n = THR_LOCAL_MAGIC_N;
-	local->in_ibuf = FALSE;
-
-	mutex_enter(&thr_local_mutex);
-
-	HASH_INSERT(thr_local_t, hash, thr_local_hash,
-		    os_thread_pf(os_thread_get_curr_id()),
-		    local);
-
-	mutex_exit(&thr_local_mutex);
-}
-
-/*******************************************************************//**
-Frees the local storage struct for the specified thread. */
-UNIV_INTERN
-void
-thr_local_free(
-/*===========*/
-	os_thread_id_t	id)	/*!< in: thread id */
-{
-	thr_local_t*	local;
-
-	mutex_enter(&thr_local_mutex);
-
-	/* Look for the local struct in the hash table */
-
-	HASH_SEARCH(hash, thr_local_hash, os_thread_pf(id),
-		    thr_local_t*, local, ut_ad(thr_local_validate(local)),
-		    os_thread_eq(local->id, id));
-	if (local == NULL) {
-		mutex_exit(&thr_local_mutex);
-
-		return;
-	}
-
-	HASH_DELETE(thr_local_t, hash, thr_local_hash,
-		    os_thread_pf(id), local);
-
-	mutex_exit(&thr_local_mutex);
-
-	ut_a(local->magic_n == THR_LOCAL_MAGIC_N);
-	ut_ad(thr_local_validate(local));
-
-	mem_free(local);
-}
-
-/****************************************************************//**
-Initializes the thread local storage module. */
-UNIV_INTERN
-void
-thr_local_init(void)
-/*================*/
-{
-
-	ut_a(thr_local_hash == NULL);
-
-	thr_local_hash = hash_create(OS_THREAD_MAX_N + 100);
-
-	mutex_create(thr_local_mutex_key,
-		     &thr_local_mutex, SYNC_THR_LOCAL);
-}
-
-/********************************************************************
-Close the thread local storage module. */
-UNIV_INTERN
-void
-thr_local_close(void)
-/*=================*/
-{
-	ulint		i;
-
-	ut_a(thr_local_hash != NULL);
-
-	/* Free the hash elements. We don't remove them from the table
-	because we are going to destroy the table anyway. */
-	for (i = 0; i < hash_get_n_cells(thr_local_hash); i++) {
-		thr_local_t*	local;
-
-		local = HASH_GET_FIRST(thr_local_hash, i);
-
-		while (local) {
-			thr_local_t*	prev_local = local;
-
-			local = HASH_GET_NEXT(hash, prev_local);
-			ut_a(prev_local->magic_n == THR_LOCAL_MAGIC_N);
-			ut_ad(thr_local_validate(prev_local));
-			mem_free(prev_local);
-		}
-	}
-
-	hash_table_free(thr_local_hash);
-	thr_local_hash = NULL;
-}

storage/innobase/trx/trx0trx.c

@@ -38,7 +38,6 @@ Created 3/26/1996 Heikki Tuuri
 #include "usr0sess.h"
 #include "read0read.h"
 #include "srv0srv.h"
-#include "thr0loc.h"
 #include "btr0sea.h"
 #include "os0proc.h"
 #include "trx0xa.h"