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70c1110a29
Performance schema likely/unlikely assume that performance schema is enabled by default, which causes a performance degradation for default installations that doesn't have performance schema enabled. Fixed by changing the likely/unlikely in PS to assume it's not enabled. This can be changed by compiling with -DPSI_ON_BY_DEFAULT Other changes: - Added psi_likely/psi_unlikely that is depending on PSI_ON_BY_DEFAULT. psi_likely() is assumed to be true if PS is enabled. - Added likely/unlikely to some PS interface code. - Moved pfs_enabled to mysys (was initialized but not used before) - Added "if (pfs_likely(pfs_enabled))" around calls to PS to avoid an extra call if PS is not enabled. - Moved checking flag_global_instrumention before other flags to speed up the case when PS is not enabled.
224 lines
6.2 KiB
C
224 lines
6.2 KiB
C
/* Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
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Copyright (c) 2017, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef MYSQL_STATEMENT_H
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#define MYSQL_STATEMENT_H
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/**
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@file mysql/psi/mysql_statement.h
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Instrumentation helpers for statements.
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*/
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#include "mysql/psi/psi.h"
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/**
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@defgroup Statement_instrumentation Statement Instrumentation
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@ingroup Instrumentation_interface
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@{
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*/
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/**
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@def mysql_statement_register(P1, P2, P3)
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Statement registration.
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*/
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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#define mysql_statement_register(P1, P2, P3) \
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inline_mysql_statement_register(P1, P2, P3)
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#else
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#define mysql_statement_register(P1, P2, P3) \
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do {} while (0)
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#endif
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#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
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#define MYSQL_DIGEST_START(LOCKER) \
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inline_mysql_digest_start(LOCKER)
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#else
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#define MYSQL_DIGEST_START(LOCKER) \
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NULL
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#endif
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#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
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#define MYSQL_DIGEST_END(LOCKER, DIGEST) \
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inline_mysql_digest_end(LOCKER, DIGEST)
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#else
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#define MYSQL_DIGEST_END(LOCKER, DIGEST) \
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do {} while (0)
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#endif
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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#define MYSQL_START_STATEMENT(STATE, K, DB, DB_LEN, CS) \
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inline_mysql_start_statement(STATE, K, DB, DB_LEN, CS, __FILE__, __LINE__)
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#else
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#define MYSQL_START_STATEMENT(STATE, K, DB, DB_LEN, CS) \
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NULL
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#endif
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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#define MYSQL_REFINE_STATEMENT(LOCKER, K) \
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inline_mysql_refine_statement(LOCKER, K)
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#else
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#define MYSQL_REFINE_STATEMENT(LOCKER, K) \
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NULL
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#endif
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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#define MYSQL_SET_STATEMENT_TEXT(LOCKER, P1, P2) \
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inline_mysql_set_statement_text(LOCKER, P1, P2)
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#else
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#define MYSQL_SET_STATEMENT_TEXT(LOCKER, P1, P2) \
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do {} while (0)
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#endif
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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#define MYSQL_SET_STATEMENT_LOCK_TIME(LOCKER, P1) \
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inline_mysql_set_statement_lock_time(LOCKER, P1)
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#else
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#define MYSQL_SET_STATEMENT_LOCK_TIME(LOCKER, P1) \
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do {} while (0)
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#endif
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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#define MYSQL_SET_STATEMENT_ROWS_SENT(LOCKER, P1) \
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inline_mysql_set_statement_rows_sent(LOCKER, P1)
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#else
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#define MYSQL_SET_STATEMENT_ROWS_SENT(LOCKER, P1) \
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do {} while (0)
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#endif
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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#define MYSQL_SET_STATEMENT_ROWS_EXAMINED(LOCKER, P1) \
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inline_mysql_set_statement_rows_examined(LOCKER, P1)
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#else
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#define MYSQL_SET_STATEMENT_ROWS_EXAMINED(LOCKER, P1) \
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do {} while (0)
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#endif
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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#define MYSQL_END_STATEMENT(LOCKER, DA) \
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inline_mysql_end_statement(LOCKER, DA)
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#else
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#define MYSQL_END_STATEMENT(LOCKER, DA) \
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do {} while (0)
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#endif
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#ifdef HAVE_PSI_STATEMENT_INTERFACE
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static inline void inline_mysql_statement_register(
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const char *category, PSI_statement_info *info, int count)
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{
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PSI_STATEMENT_CALL(register_statement)(category, info, count);
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}
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#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
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static inline struct PSI_digest_locker *
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inline_mysql_digest_start(PSI_statement_locker *locker)
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{
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PSI_digest_locker* digest_locker= NULL;
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if (psi_likely(locker != NULL))
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digest_locker= PSI_DIGEST_CALL(digest_start)(locker);
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return digest_locker;
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}
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#endif
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#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
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static inline void
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inline_mysql_digest_end(PSI_digest_locker *locker, const sql_digest_storage *digest)
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{
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if (psi_likely(locker != NULL))
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PSI_DIGEST_CALL(digest_end)(locker, digest);
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}
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#endif
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static inline struct PSI_statement_locker *
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inline_mysql_start_statement(PSI_statement_locker_state *state,
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PSI_statement_key key,
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const char *db, size_t db_len,
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const CHARSET_INFO *charset,
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const char *src_file, uint src_line)
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{
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PSI_statement_locker *locker;
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locker= PSI_STATEMENT_CALL(get_thread_statement_locker)(state, key, charset);
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if (psi_likely(locker != NULL))
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PSI_STATEMENT_CALL(start_statement)(locker, db, (uint)db_len, src_file, src_line);
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return locker;
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}
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static inline struct PSI_statement_locker *
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inline_mysql_refine_statement(PSI_statement_locker *locker,
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PSI_statement_key key)
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{
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if (psi_likely(locker != NULL))
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{
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locker= PSI_STATEMENT_CALL(refine_statement)(locker, key);
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}
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return locker;
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}
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static inline void
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inline_mysql_set_statement_text(PSI_statement_locker *locker,
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const char *text, uint text_len)
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{
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if (psi_likely(locker != NULL))
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{
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PSI_STATEMENT_CALL(set_statement_text)(locker, text, text_len);
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}
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}
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static inline void
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inline_mysql_set_statement_lock_time(PSI_statement_locker *locker,
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ulonglong count)
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{
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if (psi_likely(locker != NULL))
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{
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PSI_STATEMENT_CALL(set_statement_lock_time)(locker, count);
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}
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}
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static inline void
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inline_mysql_set_statement_rows_sent(PSI_statement_locker *locker,
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ulonglong count)
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{
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if (psi_likely(locker != NULL))
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{
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PSI_STATEMENT_CALL(set_statement_rows_sent)(locker, count);
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}
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}
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static inline void
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inline_mysql_set_statement_rows_examined(PSI_statement_locker *locker,
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ulonglong count)
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{
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if (psi_likely(locker != NULL))
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{
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PSI_STATEMENT_CALL(set_statement_rows_examined)(locker, count);
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}
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}
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static inline void
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inline_mysql_end_statement(struct PSI_statement_locker *locker,
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Diagnostics_area *stmt_da)
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{
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PSI_STAGE_CALL(end_stage)();
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if (psi_likely(locker != NULL))
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PSI_STATEMENT_CALL(end_statement)(locker, stmt_da);
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}
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#endif
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/** @} (end of group Statement_instrumentation) */
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#endif
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