晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
| DIR:/usr/include/mysql/server/mysql/psi/ |
| Current File : //usr/include/mysql/server/mysql/psi/mysql_statement.h |
/* Copyright (c) 2010, 2023, Oracle and/or its affiliates.
Copyright (c) 2017, 2019, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.
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, version 2.0, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef MYSQL_STATEMENT_H
#define MYSQL_STATEMENT_H
/**
@file mysql/psi/mysql_statement.h
Instrumentation helpers for statements.
*/
#include "mysql/psi/psi.h"
class Diagnostics_area;
typedef const struct charset_info_st CHARSET_INFO;
#ifndef PSI_STATEMENT_CALL
#define PSI_STATEMENT_CALL(M) PSI_DYNAMIC_CALL(M)
#endif
#ifndef PSI_DIGEST_CALL
#define PSI_DIGEST_CALL(M) PSI_DYNAMIC_CALL(M)
#endif
/**
@defgroup Statement_instrumentation Statement Instrumentation
@ingroup Instrumentation_interface
@{
*/
/**
@def mysql_statement_register(P1, P2, P3)
Statement registration.
*/
#ifdef HAVE_PSI_STATEMENT_INTERFACE
#define mysql_statement_register(P1, P2, P3) \
inline_mysql_statement_register(P1, P2, P3)
#else
#define mysql_statement_register(P1, P2, P3) \
do {} while (0)
#endif
#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
#define MYSQL_DIGEST_START(LOCKER) \
inline_mysql_digest_start(LOCKER)
#else
#define MYSQL_DIGEST_START(LOCKER) \
NULL
#endif
#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
#define MYSQL_DIGEST_END(LOCKER, DIGEST) \
inline_mysql_digest_end(LOCKER, DIGEST)
#else
#define MYSQL_DIGEST_END(LOCKER, DIGEST) \
do {} while (0)
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
#define MYSQL_START_STATEMENT(STATE, K, DB, DB_LEN, CS, SPS) \
inline_mysql_start_statement(STATE, K, DB, DB_LEN, CS, SPS, __FILE__, __LINE__)
#else
#define MYSQL_START_STATEMENT(STATE, K, DB, DB_LEN, CS, SPS) \
NULL
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
#define MYSQL_REFINE_STATEMENT(LOCKER, K) \
inline_mysql_refine_statement(LOCKER, K)
#else
#define MYSQL_REFINE_STATEMENT(LOCKER, K) \
NULL
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
#define MYSQL_SET_STATEMENT_TEXT(LOCKER, P1, P2) \
inline_mysql_set_statement_text(LOCKER, P1, P2)
#else
#define MYSQL_SET_STATEMENT_TEXT(LOCKER, P1, P2) \
do {} while (0)
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
#define MYSQL_SET_STATEMENT_LOCK_TIME(LOCKER, P1) \
inline_mysql_set_statement_lock_time(LOCKER, P1)
#else
#define MYSQL_SET_STATEMENT_LOCK_TIME(LOCKER, P1) \
do {} while (0)
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
#define MYSQL_SET_STATEMENT_ROWS_SENT(LOCKER, P1) \
inline_mysql_set_statement_rows_sent(LOCKER, P1)
#else
#define MYSQL_SET_STATEMENT_ROWS_SENT(LOCKER, P1) \
do {} while (0)
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
#define MYSQL_SET_STATEMENT_ROWS_EXAMINED(LOCKER, P1) \
inline_mysql_set_statement_rows_examined(LOCKER, P1)
#else
#define MYSQL_SET_STATEMENT_ROWS_EXAMINED(LOCKER, P1) \
do {} while (0)
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
#define MYSQL_END_STATEMENT(LOCKER, DA) \
inline_mysql_end_statement(LOCKER, DA)
#else
#define MYSQL_END_STATEMENT(LOCKER, DA) \
do {} while (0)
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
static inline void inline_mysql_statement_register(
const char *category, PSI_statement_info *info, int count)
{
PSI_STATEMENT_CALL(register_statement)(category, info, count);
}
#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
static inline struct PSI_digest_locker *
inline_mysql_digest_start(PSI_statement_locker *locker)
{
PSI_digest_locker* digest_locker= NULL;
if (psi_likely(locker != NULL))
digest_locker= PSI_DIGEST_CALL(digest_start)(locker);
return digest_locker;
}
#endif
#ifdef HAVE_PSI_STATEMENT_DIGEST_INTERFACE
static inline void
inline_mysql_digest_end(PSI_digest_locker *locker, const sql_digest_storage *digest)
{
if (psi_likely(locker != NULL))
PSI_DIGEST_CALL(digest_end)(locker, digest);
}
#endif
static inline struct PSI_statement_locker *
inline_mysql_start_statement(PSI_statement_locker_state *state,
PSI_statement_key key,
const char *db, size_t db_len,
CHARSET_INFO *charset,
PSI_sp_share *sp_share,
const char *src_file, uint src_line)
{
PSI_statement_locker *locker;
locker= PSI_STATEMENT_CALL(get_thread_statement_locker)(state, key, charset,
sp_share);
if (psi_likely(locker != NULL))
PSI_STATEMENT_CALL(start_statement)(locker, db, (uint)db_len, src_file, src_line);
return locker;
}
static inline struct PSI_statement_locker *
inline_mysql_refine_statement(PSI_statement_locker *locker,
PSI_statement_key key)
{
if (psi_likely(locker != NULL))
{
locker= PSI_STATEMENT_CALL(refine_statement)(locker, key);
}
return locker;
}
static inline void
inline_mysql_set_statement_text(PSI_statement_locker *locker,
const char *text, uint text_len)
{
if (psi_likely(locker != NULL))
{
PSI_STATEMENT_CALL(set_statement_text)(locker, text, text_len);
}
}
static inline void
inline_mysql_set_statement_lock_time(PSI_statement_locker *locker,
ulonglong count)
{
if (psi_likely(locker != NULL))
{
PSI_STATEMENT_CALL(set_statement_lock_time)(locker, count);
}
}
static inline void
inline_mysql_set_statement_rows_sent(PSI_statement_locker *locker,
ulonglong count)
{
if (psi_likely(locker != NULL))
{
PSI_STATEMENT_CALL(set_statement_rows_sent)(locker, count);
}
}
static inline void
inline_mysql_set_statement_rows_examined(PSI_statement_locker *locker,
ulonglong count)
{
if (psi_likely(locker != NULL))
{
PSI_STATEMENT_CALL(set_statement_rows_examined)(locker, count);
}
}
static inline void
inline_mysql_end_statement(struct PSI_statement_locker *locker,
Diagnostics_area *stmt_da)
{
PSI_STAGE_CALL(end_stage)();
if (psi_likely(locker != NULL))
PSI_STATEMENT_CALL(end_statement)(locker, stmt_da);
}
#endif
/** @} (end of group Statement_instrumentation) */
#endif
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