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。 sh-3ll

HOME


sh-3ll 1.0
DIR:/proc/thread-self/root/usr/include/mysql/server/mysql/
Upload File :
Current File : //proc/thread-self/root/usr/include/mysql/server/mysql/service_kill_statement.h
/* Copyright (c) 2013, 2018, MariaDB

   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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */

#ifndef MYSQL_SERVICE_KILL_STATEMENT_INCLUDED
#define MYSQL_SERVICE_KILL_STATEMENT_INCLUDED

/**
  @file
  This service provides functions that allow plugins to support
  the KILL statement.

  In MySQL support for the KILL statement is cooperative. The KILL
  statement only sets a "killed" flag. This function returns the value
  of that flag.  A thread should check it often, especially inside
  time-consuming loops, and gracefully abort the operation if it is
  non-zero.

  thd_killed(thd)
  @return 0 - no KILL statement was issued, continue normally
  @return 1 - there was a KILL statement, abort the execution.

  thd_kill_level(thd)
  @return thd_kill_levels_enum values
*/

#ifdef __cplusplus
extern "C" {
#endif

enum thd_kill_levels {
  THD_IS_NOT_KILLED=0,
  THD_ABORT_SOFTLY=50, /**< abort when possible, don't leave tables corrupted */
  THD_ABORT_ASAP=100,  /**< abort asap */
};

extern struct kill_statement_service_st {
  enum thd_kill_levels (*thd_kill_level_func)(const MYSQL_THD);
} *thd_kill_statement_service;

/* backward compatibility helper */
#define thd_killed(THD)   (thd_kill_level(THD) == THD_ABORT_ASAP)

#ifdef MYSQL_DYNAMIC_PLUGIN

#define thd_kill_level(THD) \
        thd_kill_statement_service->thd_kill_level_func(THD)

#else

enum thd_kill_levels thd_kill_level(const MYSQL_THD);

#endif

#ifdef __cplusplus
}
#endif

#endif