Skip to content

M
mariadb
Commit f43adb80 authored by Marko Mäkelä's avatar Marko Mäkelä
Browse files
Options

Merge mysql-5.1 to mysql-5.5.

parents 3400e0be b0fc27dc
Show whitespace changes
Inline Side-by-side
Showing with 81 additions and 542 deletions
storage/innobase/buf/buf0buddy.c
View file @ f43adb80
/*****************************************************************************
Copyright (c) 2006, 2010, Innobase Oy. All Rights Reserved.
Copyright (c) 2006, 2011, Oracle and/or its affiliates. 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
......@@ -352,7 +352,9 @@ buf_buddy_relocate_block(
buf_page_t* bpage, /*!< in: block to relocate */
buf_page_t* dpage) /*!< in: free block to relocate to */
{
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
buf_page_t* b;
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
buf_pool_t* buf_pool = buf_pool_from_bpage(bpage);
ut_ad(buf_pool_mutex_own(buf_pool));
......@@ -382,7 +384,7 @@ buf_buddy_relocate_block(
buf_relocate(bpage, dpage);
ut_d(bpage->state = BUF_BLOCK_ZIP_FREE);
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
/* relocate buf_pool->zip_clean */
b = UT_LIST_GET_PREV(list, dpage);
UT_LIST_REMOVE(list, buf_pool->zip_clean, dpage);
......@@ -392,6 +394,7 @@ buf_buddy_relocate_block(
} else {
UT_LIST_ADD_FIRST(list, buf_pool->zip_clean, dpage);
}
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
UNIV_MEM_INVALID(bpage, sizeof *bpage);
......
storage/innobase/buf/buf0buf.c
View file @ f43adb80
/*****************************************************************************
Copyright (c) 1995, 2010, Innobase Oy. All Rights Reserved.
Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2008, Google Inc.
Portions of this file contain modifications contributed and copyrighted by
......@@ -1099,70 +1099,6 @@ buf_chunk_not_freed(
return(NULL);
}
/*********************************************************************//**
Checks that all blocks in the buffer chunk are in BUF_BLOCK_NOT_USED state.
@return TRUE if all freed */
static
ibool
buf_chunk_all_free(
/*===============*/
const buf_chunk_t* chunk) /*!< in: chunk being checked */
{
const buf_block_t* block;
ulint i;
block = chunk->blocks;
for (i = chunk->size; i--; block++) {
if (buf_block_get_state(block) != BUF_BLOCK_NOT_USED) {
return(FALSE);
}
}
return(TRUE);
}
/********************************************************************//**
Frees a chunk of buffer frames. */
static
void
buf_chunk_free(
/*===========*/
buf_pool_t* buf_pool, /*!< in: buffer pool instance */
buf_chunk_t* chunk) /*!< out: chunk of buffers */
{
buf_block_t* block;
const buf_block_t* block_end;
ut_ad(buf_pool_mutex_own(buf_pool));
block_end = chunk->blocks + chunk->size;
for (block = chunk->blocks; block < block_end; block++) {
ut_a(buf_block_get_state(block) == BUF_BLOCK_NOT_USED);
ut_a(!block->page.zip.data);
ut_ad(!block->page.in_LRU_list);
ut_ad(!block->in_unzip_LRU_list);
ut_ad(!block->page.in_flush_list);
/* Remove the block from the free list. */
ut_ad(block->page.in_free_list);
UT_LIST_REMOVE(list, buf_pool->free, (&block->page));
/* Free the latches. */
mutex_free(&block->mutex);
rw_lock_free(&block->lock);
#ifdef UNIV_SYNC_DEBUG
rw_lock_free(&block->debug_latch);
#endif /* UNIV_SYNC_DEBUG */
UNIV_MEM_UNDESC(block);
}
os_mem_free_large(chunk->mem, chunk->mem_size);
}
/********************************************************************//**
Set buffer pool size variables after resizing it */
static
......@@ -1272,8 +1208,6 @@ buf_pool_free_instance(
chunk = chunks + buf_pool->n_chunks;
while (--chunk >= chunks) {
/* Bypass the checks of buf_chunk_free(), since they
would fail at shutdown. */
os_mem_free_large(chunk->mem, chunk->mem_size);
}
......@@ -1533,281 +1467,6 @@ buf_relocate(
}
/********************************************************************//**
Shrinks a buffer pool instance. */
static
void
buf_pool_shrink_instance(
/*=====================*/
buf_pool_t* buf_pool, /*!< in: buffer pool instance */
ulint chunk_size) /*!< in: number of pages to remove */
{
buf_chunk_t* chunks;
buf_chunk_t* chunk;
ulint max_size;
ulint max_free_size;
buf_chunk_t* max_chunk;
buf_chunk_t* max_free_chunk;
ut_ad(!buf_pool_mutex_own(buf_pool));
try_again:
btr_search_disable(); /* Empty the adaptive hash index again */
buf_pool_mutex_enter(buf_pool);
shrink_again:
if (buf_pool->n_chunks <= 1) {
/* Cannot shrink if there is only one chunk */
goto func_done;
}
/* Search for the largest free chunk
not larger than the size difference */
chunks = buf_pool->chunks;
chunk = chunks + buf_pool->n_chunks;
max_size = max_free_size = 0;
max_chunk = max_free_chunk = NULL;
while (--chunk >= chunks) {
if (chunk->size <= chunk_size
&& chunk->size > max_free_size) {
if (chunk->size > max_size) {
max_size = chunk->size;
max_chunk = chunk;
}
if (buf_chunk_all_free(chunk)) {
max_free_size = chunk->size;
max_free_chunk = chunk;
}
}
}
if (!max_free_size) {
ulint dirty = 0;
ulint nonfree = 0;
buf_block_t* block;
buf_block_t* bend;
/* Cannot shrink: try again later
(do not assign srv_buf_pool_old_size) */
if (!max_chunk) {
goto func_exit;
}
block = max_chunk->blocks;
bend = block + max_chunk->size;
/* Move the blocks of chunk to the end of the
LRU list and try to flush them. */
for (; block < bend; block++) {
switch (buf_block_get_state(block)) {
case BUF_BLOCK_NOT_USED:
continue;
case BUF_BLOCK_FILE_PAGE:
break;
default:
nonfree++;
continue;
}
mutex_enter(&block->mutex);
/* The following calls will temporarily
release block->mutex and buf_pool->mutex.
Therefore, we have to always retry,
even if !dirty && !nonfree. */
if (!buf_flush_ready_for_replace(&block->page)) {
buf_LRU_make_block_old(&block->page);
dirty++;
} else if (buf_LRU_free_block(&block->page, TRUE)
!= BUF_LRU_FREED) {
nonfree++;
}
mutex_exit(&block->mutex);
}
buf_pool_mutex_exit(buf_pool);
/* Request for a flush of the chunk if it helps.
Do not flush if there are non-free blocks, since
flushing will not make the chunk freeable. */
if (nonfree) {
/* Avoid busy-waiting. */
os_thread_sleep(100000);
} else if (dirty
&& buf_flush_LRU(buf_pool, dirty)
== ULINT_UNDEFINED) {
buf_flush_wait_batch_end(buf_pool, BUF_FLUSH_LRU);
}
goto try_again;
}
max_size = max_free_size;
max_chunk = max_free_chunk;
buf_pool->old_pool_size = buf_pool->curr_pool_size;
/* Rewrite buf_pool->chunks. Copy everything but max_chunk. */
chunks = mem_alloc((buf_pool->n_chunks - 1) * sizeof *chunks);
memcpy(chunks, buf_pool->chunks,
(max_chunk - buf_pool->chunks) * sizeof *chunks);
memcpy(chunks + (max_chunk - buf_pool->chunks),
max_chunk + 1,
buf_pool->chunks + buf_pool->n_chunks
- (max_chunk + 1));
ut_a(buf_pool->curr_size > max_chunk->size);
buf_pool->curr_size -= max_chunk->size;
buf_pool->curr_pool_size = buf_pool->curr_size * UNIV_PAGE_SIZE;
chunk_size -= max_chunk->size;
buf_chunk_free(buf_pool, max_chunk);
mem_free(buf_pool->chunks);
buf_pool->chunks = chunks;
buf_pool->n_chunks--;
/* Allow a slack of one megabyte. */
if (chunk_size > 1048576 / UNIV_PAGE_SIZE) {
goto shrink_again;
}
goto func_exit;
func_done:
buf_pool->old_pool_size = buf_pool->curr_pool_size;
func_exit:
buf_pool_mutex_exit(buf_pool);
btr_search_enable();
}
/********************************************************************//**
Shrinks the buffer pool. */
static
void
buf_pool_shrink(
/*============*/
ulint chunk_size) /*!< in: number of pages to remove */
{
ulint i;
for (i = 0; i < srv_buf_pool_instances; i++) {
buf_pool_t* buf_pool;
ulint instance_chunk_size;
instance_chunk_size = chunk_size / srv_buf_pool_instances;
buf_pool = buf_pool_from_array(i);
buf_pool_shrink_instance(buf_pool, instance_chunk_size);
}
buf_pool_set_sizes();
}
/********************************************************************//**
Rebuild buf_pool->page_hash for a buffer pool instance. */
static
void
buf_pool_page_hash_rebuild_instance(
/*================================*/
buf_pool_t* buf_pool) /*!< in: buffer pool instance */
{
ulint i;
buf_page_t* b;
buf_chunk_t* chunk;
ulint n_chunks;
hash_table_t* zip_hash;
hash_table_t* page_hash;
buf_pool_mutex_enter(buf_pool);
/* Free, create, and populate the hash table. */
hash_table_free(buf_pool->page_hash);
buf_pool->page_hash = page_hash = hash_create(2 * buf_pool->curr_size);
zip_hash = hash_create(2 * buf_pool->curr_size);
HASH_MIGRATE(buf_pool->zip_hash, zip_hash, buf_page_t, hash,
BUF_POOL_ZIP_FOLD_BPAGE);
hash_table_free(buf_pool->zip_hash);
buf_pool->zip_hash = zip_hash;
/* Insert the uncompressed file pages to buf_pool->page_hash. */
chunk = buf_pool->chunks;
n_chunks = buf_pool->n_chunks;
for (i = 0; i < n_chunks; i++, chunk++) {
ulint j;
buf_block_t* block = chunk->blocks;
for (j = 0; j < chunk->size; j++, block++) {
if (buf_block_get_state(block)
== BUF_BLOCK_FILE_PAGE) {
ut_ad(!block->page.in_zip_hash);
ut_ad(block->page.in_page_hash);
HASH_INSERT(buf_page_t, hash, page_hash,
buf_page_address_fold(
block->page.space,
block->page.offset),
&block->page);
}
}
}
/* Insert the compressed-only pages to buf_pool->page_hash.
All such blocks are either in buf_pool->zip_clean or
in buf_pool->flush_list. */
for (b = UT_LIST_GET_FIRST(buf_pool->zip_clean); b;
b = UT_LIST_GET_NEXT(list, b)) {
ut_a(buf_page_get_state(b) == BUF_BLOCK_ZIP_PAGE);
ut_ad(!b->in_flush_list);
ut_ad(b->in_LRU_list);
ut_ad(b->in_page_hash);
ut_ad(!b->in_zip_hash);
HASH_INSERT(buf_page_t, hash, page_hash,
buf_page_address_fold(b->space, b->offset), b);
}
buf_flush_list_mutex_enter(buf_pool);
for (b = UT_LIST_GET_FIRST(buf_pool->flush_list); b;
b = UT_LIST_GET_NEXT(list, b)) {
ut_ad(b->in_flush_list);
ut_ad(b->in_LRU_list);
ut_ad(b->in_page_hash);
ut_ad(!b->in_zip_hash);
switch (buf_page_get_state(b)) {
case BUF_BLOCK_ZIP_DIRTY:
HASH_INSERT(buf_page_t, hash, page_hash,
buf_page_address_fold(b->space,
b->offset), b);
break;
case BUF_BLOCK_FILE_PAGE:
/* uncompressed page */
break;
case BUF_BLOCK_ZIP_FREE:
case BUF_BLOCK_ZIP_PAGE:
case BUF_BLOCK_NOT_USED:
case BUF_BLOCK_READY_FOR_USE:
case BUF_BLOCK_MEMORY:
case BUF_BLOCK_REMOVE_HASH:
ut_error;
break;
}
}
buf_flush_list_mutex_exit(buf_pool);
buf_pool_mutex_exit(buf_pool);
}
/********************************************************************
Determine if a block is a sentinel for a buffer pool watch.
@return TRUE if a sentinel for a buffer pool watch, FALSE if not */
UNIV_INTERN
......@@ -1913,123 +1572,6 @@ buf_pool_watch_set(
return(NULL);
}
/********************************************************************//**
Rebuild buf_pool->page_hash. */
static
void
buf_pool_page_hash_rebuild(void)
/*============================*/
{
ulint i;
for (i = 0; i < srv_buf_pool_instances; i++) {
buf_pool_page_hash_rebuild_instance(buf_pool_from_array(i));
}
}
/********************************************************************//**
Increase the buffer pool size of one buffer pool instance. */
static
void
buf_pool_increase_instance(
/*=======================*/
buf_pool_t* buf_pool, /*!< in: buffer pool instane */
ulint change_size) /*!< in: new size of the pool */
{
buf_chunk_t* chunks;
buf_chunk_t* chunk;
buf_pool_mutex_enter(buf_pool);
chunks = mem_alloc((buf_pool->n_chunks + 1) * sizeof *chunks);
memcpy(chunks, buf_pool->chunks, buf_pool->n_chunks * sizeof *chunks);
chunk = &chunks[buf_pool->n_chunks];
if (!buf_chunk_init(buf_pool, chunk, change_size)) {
mem_free(chunks);
} else {
buf_pool->old_pool_size = buf_pool->curr_pool_size;
buf_pool->curr_size += chunk->size;
buf_pool->curr_pool_size = buf_pool->curr_size * UNIV_PAGE_SIZE;
mem_free(buf_pool->chunks);
buf_pool->chunks = chunks;
buf_pool->n_chunks++;
}
buf_pool_mutex_exit(buf_pool);
}
/********************************************************************//**
Increase the buffer pool size. */
static
void
buf_pool_increase(
/*==============*/
ulint change_size)
{
ulint i;
for (i = 0; i < srv_buf_pool_instances; i++) {
buf_pool_increase_instance(
buf_pool_from_array(i),
change_size / srv_buf_pool_instances);
}
buf_pool_set_sizes();
}
/********************************************************************//**
Resizes the buffer pool. */
UNIV_INTERN
void
buf_pool_resize(void)
/*=================*/
{
ulint change_size;
ulint min_change_size = 1048576 * srv_buf_pool_instances;
buf_pool_mutex_enter_all();
if (srv_buf_pool_old_size == srv_buf_pool_size) {
buf_pool_mutex_exit_all();
return;
} else if (srv_buf_pool_curr_size + min_change_size
> srv_buf_pool_size) {
change_size = (srv_buf_pool_curr_size - srv_buf_pool_size)
/ UNIV_PAGE_SIZE;
buf_pool_mutex_exit_all();
/* Disable adaptive hash indexes and empty the index
in order to free up memory in the buffer pool chunks. */
buf_pool_shrink(change_size);
} else if (srv_buf_pool_curr_size + min_change_size
< srv_buf_pool_size) {
/* Enlarge the buffer pool by at least one megabyte */
change_size = srv_buf_pool_size - srv_buf_pool_curr_size;
buf_pool_mutex_exit_all();
buf_pool_increase(change_size);
} else {
srv_buf_pool_size = srv_buf_pool_old_size;
buf_pool_mutex_exit_all();
return;
}
buf_pool_page_hash_rebuild();
}
/****************************************************************//**
Remove the sentinel block for the watch before replacing it with a real block.
buf_page_watch_clear() or buf_page_watch_occurred() will notice that
......@@ -2951,8 +2493,10 @@ wait_until_unfixed:
if (buf_page_get_state(&block->page)
== BUF_BLOCK_ZIP_PAGE) {
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
UT_LIST_REMOVE(list, buf_pool->zip_clean,
&block->page);
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
ut_ad(!block->page.in_flush_list);
} else {
/* Relocate buf_pool->flush_list. */
......@@ -3764,7 +3308,9 @@ err_exit:
/* The block must be put to the LRU list, to the old blocks */
buf_LRU_add_block(bpage, TRUE/* to old blocks */);
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
buf_LRU_insert_zip_clean(bpage);
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
buf_page_set_io_fix(bpage, BUF_IO_READ);
......
storage/innobase/buf/buf0flu.c
View file @ f43adb80
/*****************************************************************************
Copyright (c) 1995, 2010, Innobase Oy. All Rights Reserved.
Copyright (c) 1995, 2011, Oracle and/or its affiliates. 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
......@@ -524,7 +524,9 @@ buf_flush_remove(
case BUF_BLOCK_ZIP_DIRTY:
buf_page_set_state(bpage, BUF_BLOCK_ZIP_PAGE);
UT_LIST_REMOVE(list, buf_pool->flush_list, bpage);
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
buf_LRU_insert_zip_clean(bpage);
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
break;
case BUF_BLOCK_FILE_PAGE:
UT_LIST_REMOVE(list, buf_pool->flush_list, bpage);
......
storage/innobase/buf/buf0lru.c
View file @ f43adb80
/*****************************************************************************
Copyright (c) 1995, 2010, Innobase Oy. All Rights Reserved.
Copyright (c) 1995, 2011, Oracle and/or its affiliates. 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
......@@ -525,6 +525,7 @@ buf_LRU_invalidate_tablespace(
}
}
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
/********************************************************************//**
Insert a compressed block into buf_pool->zip_clean in the LRU order. */
UNIV_INTERN
......@@ -557,6 +558,7 @@ buf_LRU_insert_zip_clean(
UT_LIST_ADD_FIRST(list, buf_pool->zip_clean, bpage);
}
}
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
/******************************************************************//**
Try to free an uncompressed page of a compressed block from the unzip
......@@ -1598,7 +1600,9 @@ alloc:
}
if (b->state == BUF_BLOCK_ZIP_PAGE) {
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
buf_LRU_insert_zip_clean(b);
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
} else {
/* Relocate on buf_pool->flush_list. */
buf_flush_relocate_on_flush_list(bpage, b);
......@@ -1884,7 +1888,9 @@ buf_LRU_block_remove_hashed_page(
ut_a(bpage->zip.data);
ut_a(buf_page_get_zip_size(bpage));
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
UT_LIST_REMOVE(list, buf_pool->zip_clean, bpage);
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
mutex_exit(&buf_pool->zip_mutex);
buf_pool_mutex_exit_forbid(buf_pool);
......
storage/innobase/include/buf0buf.h
View file @ f43adb80
......@@ -246,12 +246,6 @@ buf_relocate(
BUF_BLOCK_ZIP_DIRTY or BUF_BLOCK_ZIP_PAGE */
buf_page_t* dpage) /*!< in/out: destination control block */
__attribute__((nonnull));
/********************************************************************//**
Resizes the buffer pool. */
UNIV_INTERN
void
buf_pool_resize(void);
/*=================*/
/*********************************************************************//**
Gets the current size of buffer buf_pool in bytes.
@return size in bytes */
......@@ -1221,7 +1215,7 @@ ulint
buf_get_free_list_len(void);
/*=======================*/
/********************************************************************
/********************************************************************//**
Determine if a block is a sentinel for a buffer pool watch.
@return TRUE if a sentinel for a buffer pool watch, FALSE if not */
UNIV_INTERN
......@@ -1757,8 +1751,10 @@ struct buf_pool_struct{
frames and buf_page_t descriptors of blocks that exist
in the buffer pool only in compressed form. */
/* @{ */
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
UT_LIST_BASE_NODE_T(buf_page_t) zip_clean;
/*!< unmodified compressed pages */
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
UT_LIST_BASE_NODE_T(buf_page_t) zip_free[BUF_BUDDY_SIZES];
/*!< buddy free lists */
......
storage/innobase/include/buf0lru.h
View file @ f43adb80
/*****************************************************************************
Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
Copyright (c) 1995, 2011, Oracle and/or its affiliates. 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
......@@ -85,6 +85,7 @@ void
buf_LRU_invalidate_tablespace(
/*==========================*/
ulint id); /*!< in: space id */
#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
/********************************************************************//**
Insert a compressed block into buf_pool->zip_clean in the LRU order. */
UNIV_INTERN
......@@ -92,6 +93,7 @@ void
buf_LRU_insert_zip_clean(
/*=====================*/
buf_page_t* bpage); /*!< in: pointer to the block in question */
#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */
/******************************************************************//**
Try to free a block. If bpage is a descriptor of a compressed-only
......
storage/innobase/page/page0zip.c
View file @ f43adb80
/*****************************************************************************
Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved.
Copyright (c) 2005, 2011, Oracle and/or its affiliates. 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
......@@ -3912,17 +3912,9 @@ page_zip_write_trx_id_and_roll_ptr(
UNIV_MEM_ASSERT_RW(page_zip->data, page_zip_get_size(page_zip));
}
#ifdef UNIV_ZIP_DEBUG
/** Set this variable in a debugger to disable page_zip_clear_rec().
The only observable effect should be the compression ratio due to
deleted records not being zeroed out. In rare cases, there can be
page_zip_validate() failures on the node_ptr, trx_id and roll_ptr
columns if the space is reallocated for a smaller record. */
UNIV_INTERN ibool page_zip_clear_rec_disable;
#endif /* UNIV_ZIP_DEBUG */
/**********************************************************************//**
Clear an area on the uncompressed and compressed page, if possible. */
Clear an area on the uncompressed and compressed page.
Do not clear the data payload, as that would grow the modification log. */
static
void
page_zip_clear_rec(
......@@ -3934,6 +3926,9 @@ page_zip_clear_rec(
{
ulint heap_no;
page_t* page = page_align(rec);
byte* storage;
byte* field;
ulint len;
/* page_zip_validate() would fail here if a record
containing externally stored columns is being deleted. */
ut_ad(rec_offs_validate(rec, index, offsets));
......@@ -3949,60 +3944,46 @@ page_zip_clear_rec(
UNIV_MEM_ASSERT_RW(rec - rec_offs_extra_size(offsets),
rec_offs_extra_size(offsets));
if (
#ifdef UNIV_ZIP_DEBUG
!page_zip_clear_rec_disable &&
#endif /* UNIV_ZIP_DEBUG */
page_zip->m_end
+ 1 + ((heap_no - 1) >= 64)/* size of the log entry */
+ page_zip_get_trailer_len(page_zip,
dict_index_is_clust(index), NULL)
< page_zip_get_size(page_zip)) {
byte* data;
/* Clear only the data bytes, because the allocator and
the decompressor depend on the extra bytes. */
memset(rec, 0, rec_offs_data_size(offsets));
if (!page_is_leaf(page)) {
/* Clear node_ptr on the compressed page. */
byte* storage = page_zip->data
/* Clear node_ptr. On the compressed page,
there is an array of node_ptr immediately before the
dense page directory, at the very end of the page. */
storage = page_zip->data
+ page_zip_get_size(page_zip)
- (page_dir_get_n_heap(page)
- PAGE_HEAP_NO_USER_LOW)
* PAGE_ZIP_DIR_SLOT_SIZE;
ut_ad(dict_index_get_n_unique_in_tree(index) ==
rec_offs_n_fields(offsets) - 1);
field = rec_get_nth_field(rec, offsets,
rec_offs_n_fields(offsets) - 1,
&len);
ut_ad(len == REC_NODE_PTR_SIZE);
ut_ad(!rec_offs_any_extern(offsets));
memset(field, 0, REC_NODE_PTR_SIZE);
memset(storage - (heap_no - 1) * REC_NODE_PTR_SIZE,
0, REC_NODE_PTR_SIZE);
} else if (dict_index_is_clust(index)) {
/* Clear trx_id and roll_ptr on the compressed page. */
byte* storage = page_zip->data
/* Clear trx_id and roll_ptr. On the compressed page,
there is an array of these fields immediately before the
dense page directory, at the very end of the page. */
const ulint trx_id_pos
= dict_col_get_clust_pos(
dict_table_get_sys_col(
index->table, DATA_TRX_ID), index);
storage = page_zip->data
+ page_zip_get_size(page_zip)
- (page_dir_get_n_heap(page)
- PAGE_HEAP_NO_USER_LOW)
* PAGE_ZIP_DIR_SLOT_SIZE;
field = rec_get_nth_field(rec, offsets, trx_id_pos, &len);
ut_ad(len == DATA_TRX_ID_LEN);
memset(field, 0, DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN);
memset(storage - (heap_no - 1)
* (DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN),
0, DATA_TRX_ID_LEN + DATA_ROLL_PTR_LEN);
}
/* Log that the data was zeroed out. */
data = page_zip->data + page_zip->m_end;
ut_ad(!*data);
if (UNIV_UNLIKELY(heap_no - 1 >= 64)) {
*data++ = (byte) (0x80 | (heap_no - 1) >> 7);
ut_ad(!*data);
}
*data++ = (byte) ((heap_no - 1) << 1 | 1);
ut_ad(!*data);
ut_ad((ulint) (data - page_zip->data)
< page_zip_get_size(page_zip));
page_zip->m_end = data - page_zip->data;
page_zip->m_nonempty = TRUE;
} else if (page_is_leaf(page) && dict_index_is_clust(index)) {
/* Do not clear the record, because there is not enough space
to log the operation. */
if (rec_offs_any_extern(offsets)) {
ulint i;
......@@ -4011,15 +3992,18 @@ page_zip_clear_rec(
/* Clear all BLOB pointers in order to make
page_zip_validate() pass. */
if (rec_offs_nth_extern(offsets, i)) {
ulint len;
byte* field = rec_get_nth_field(
field = rec_get_nth_field(
rec, offsets, i, &len);
ut_ad(len
== BTR_EXTERN_FIELD_REF_SIZE);
memset(field + len
- BTR_EXTERN_FIELD_REF_SIZE,
0, BTR_EXTERN_FIELD_REF_SIZE);
}
}
}
} else {
ut_ad(!rec_offs_any_extern(offsets));
}
#ifdef UNIV_ZIP_DEBUG
......
storage/innobase/rem/rem0rec.c
View file @ f43adb80
/*****************************************************************************
Copyright (c) 1994, 2010, Innobase Oy. All Rights Reserved.
Copyright (c) 1994, 2011, Oracle and/or its affiliates. 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
......@@ -408,7 +408,7 @@ rec_init_offsets(
do {
ulint len;
if (UNIV_UNLIKELY(i == n_node_ptr_field)) {
len = offs += 4;
len = offs += REC_NODE_PTR_SIZE;
goto resolved;
}
......@@ -640,7 +640,7 @@ rec_get_offsets_reverse(
do {
ulint len;
if (UNIV_UNLIKELY(i == n_node_ptr_field)) {
len = offs += 4;
len = offs += REC_NODE_PTR_SIZE;
goto resolved;
}
......@@ -1131,9 +1131,9 @@ rec_convert_dtuple_to_rec_comp(
if (UNIV_UNLIKELY(i == n_node_ptr_field)) {
ut_ad(dtype_get_prtype(type) & DATA_NOT_NULL);
ut_ad(len == 4);
ut_ad(len == REC_NODE_PTR_SIZE);
memcpy(end, dfield_get_data(field), len);
end += 4;
end += REC_NODE_PTR_SIZE;
break;
}
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7