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Viewing changes to plugin/innobase/row/row0ext.c

  • Committer: Stewart Smith
  • Author(s): Vasil Dimov, Stewart Smith
  • Date: 2010-12-20 02:24:00 UTC
  • mto: (2021.1.2 build)
  • mto: This revision was merged to the branch mainline in revision 2022.
  • Revision ID: stewart@flamingspork.com-20101220022400-0p9lvvppwgaowdju
Merge Revision revid:vasil.dimov@oracle.com-20101102165720-164z3666y3tut4c2 from MySQL InnoDB

Original revid:vasil.dimov@oracle.com-20101102165720-164z3666y3tut4c2

Original Authors: Vasil Dimov <vasil.dimov@oracle.com>
Original commit message:
Fix Bug#53046 dict_update_statistics_low can still be run concurrently on same table

Replace the array of mutexes that used to protect
dict_index_t::stat_n_diff_key_vals[] with an array of rw locks that protects
all the stats related members in dict_table_t and all of its indexes.

Approved by:    Jimmy (rb://503)

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plugin/innobase/row/row0ext.c
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/*****************************************************************************
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Copyright (C) 2006, 2009, Innobase Oy. All Rights Reserved.
 
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Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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        ulint           zip_size,/*!< compressed page size in bytes, or 0 */
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        const dfield_t* dfield) /*!< in: data field */
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{
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        const byte*     field   = static_cast<const byte *>(dfield_get_data(dfield));
 
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        const byte*     field   = dfield_get_data(dfield);
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        ulint           f_len   = dfield_get_len(dfield);
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        byte*           buf     = ext->buf + i * REC_MAX_INDEX_COL_LEN;
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        mem_heap_t*     heap)   /*!< in: heap where created */
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{
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        ulint           i;
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        row_ext_t*      ret = static_cast<row_ext_t *>(mem_heap_alloc(heap, (sizeof *ret)
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                                             + (n_ext - 1) * sizeof ret->len));
 
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        row_ext_t*      ret = mem_heap_alloc(heap, (sizeof *ret)
 
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                                             + (n_ext - 1) * sizeof ret->len);
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        ut_ad(ut_is_2pow(zip_size));
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        ut_ad(zip_size <= UNIV_PAGE_SIZE);
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        ret->n_ext = n_ext;
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        ret->ext = ext;
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        ret->buf = static_cast<byte *>(mem_heap_alloc(heap, n_ext * REC_MAX_INDEX_COL_LEN));
 
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        ret->buf = mem_heap_alloc(heap, n_ext * REC_MAX_INDEX_COL_LEN);
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#ifdef UNIV_DEBUG
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        memset(ret->buf, 0xaa, n_ext * REC_MAX_INDEX_COL_LEN);
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        UNIV_MEM_ALLOC(ret->buf, n_ext * REC_MAX_INDEX_COL_LEN);