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perfschema 5.6.24

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including the big commit
  commit 305130361bf72726de220f3d2b2787395e10be61
  Author: Marc Alff <marc.alff@oracle.com>
  Date:   Tue Feb 10 11:31:32 2015 +0100

      WL#8354 BACKPORT DIGEST IMPROVEMENTS TO MYSQL 5.6

(with the following commits) and related changes in sql/
This commit is contained in:
Sergei Golubchik
2015-05-05 15:23:47 +02:00
parent dd0207bda4 d71d411905
commit 1d3ea9ecd8
151 changed files with 2138 additions and 1681 deletions
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51
sql/sql_digest_stream.h Normal file
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/* Copyright (c) 2008, 2015, 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 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,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
#ifndef SQL_DIGEST_STREAM_H
#define SQL_DIGEST_STREAM_H
#include "sql_digest.h"
/**
State data storage for @c digest_start, @c digest_add_token.
This structure extends the @c sql_digest_storage structure
with temporary state used only during parsing.
*/
struct sql_digest_state
{
/**
Index, in the digest token array, of the last identifier seen.
Reduce rules used in the digest computation can not
apply to tokens seen before an identifier.
@sa digest_add_token
*/
int m_last_id_index;
sql_digest_storage m_digest_storage;
inline void reset(unsigned char *token_array, uint length)
{
m_last_id_index= 0;
m_digest_storage.reset(token_array, length);
}
inline bool is_empty()
{
return m_digest_storage.is_empty();
}
};
typedef struct sql_digest_state sql_digest_state;
#endif