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Current File : /Program Files/MySQL/MySQL Server 5.7/include/mysql/service_srv_session_info.h
#ifndef MYSQL_SERVICE_SRV_SESSION_INFO_INCLUDED
#define MYSQL_SERVICE_SRV_SESSION_INFO_INCLUDED
/*  Copyright (c) 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */

/**
  @file
  Service providing setters and getters for some properties of a session
*/


#include "mysql/service_srv_session.h"
#ifndef MYSQL_ABI_CHECK
#include "my_thread.h"           /* my_thread_id */
#include "m_string.h"            /* LEX_CSTRING */
#include "plugin.h"              /* MYSQL_THD */
#include "mysql_com.h"           /* Vio for violite.h */
#include "violite.h"             /* enum_vio_type */
#include <stdint.h>              /* uint16_t */
#endif

#ifdef __cplusplus
extern "C" {
#endif

extern struct srv_session_info_service_st {
  MYSQL_THD (*get_thd)(MYSQL_SESSION session);

  my_thread_id (*get_session_id)(MYSQL_SESSION session);

  LEX_CSTRING (*get_current_db)(MYSQL_SESSION session);

  uint16_t (*get_client_port)(MYSQL_SESSION session);
  int (*set_client_port)(MYSQL_SESSION session, uint16_t port);

  int (*set_connection_type)(MYSQL_SESSION session, enum enum_vio_type type);

  int (*killed)(MYSQL_SESSION session);

  unsigned int (*session_count)();
  unsigned int (*thread_count)(const void *plugin);
} *srv_session_info_service;

#ifdef MYSQL_DYNAMIC_PLUGIN

#define srv_session_info_get_thd(session)            srv_session_info_service->get_thd((session))
#define srv_session_info_get_session_id(sess)        srv_session_info_service->get_session_id((sess))
#define srv_session_info_get_current_db(sess)        srv_session_info_service->get_current_db((sess))
#define srv_session_info_get_client_port(sess)       srv_session_info_service->get_client_port((sess))
#define srv_session_info_set_client_port(sess, port) srv_session_info_service->set_client_port((sess), (port))
#define srv_session_info_set_connection_type(sess, type) srv_session_info_service->set_connection_type((sess), (type))
#define srv_session_info_killed(sess)                srv_session_info_service->killed((sess))
#define srv_session_info_session_count(sess)         srv_session_info_service->session_count(sess)
#define srv_session_info_thread_count(plugin)          srv_session_info_service->thread_count(plugin)

#else

/**
  Returns the THD of a session.

  @param session  Session

  @returns
    address of the THD
*/
MYSQL_THD srv_session_info_get_thd(MYSQL_SESSION session);

/**
  Returns the ID of a session.

  @param session Session
*/
my_thread_id srv_session_info_get_session_id(MYSQL_SESSION session);

/**
  Returns the current database of a session.

  @note {NULL, 0} is returned case of no current database or session is NULL


  @param session Session
*/
LEX_CSTRING srv_session_info_get_current_db(MYSQL_SESSION session);

/**
  Returns the client port of a session.

  @note The client port in SHOW PROCESSLIST, INFORMATION_SCHEMA.PROCESSLIST.
  This port is NOT shown in PERFORMANCE_SCHEMA.THREADS.

  @param session Session
*/
uint16_t srv_session_info_get_client_port(MYSQL_SESSION session);

/**
  Sets the client port of a session.

  @note The client port in SHOW PROCESSLIST, INFORMATION_SCHEMA.PROCESSLIST.
  This port is NOT shown in PERFORMANCE_SCHEMA.THREADS.

  @param session  Session
  @param port     Port number

  @return
    0 success
    1 failure
*/
int srv_session_info_set_client_port(MYSQL_SESSION session, uint16_t port);

/**
  Sets the connection type of a session.

  @see enum_vio_type

  @note The type is shown in PERFORMANCE_SCHEMA.THREADS. The value is translated
        from the enum to a string according to @see vio_type_names array
        in vio/vio.c

  @note If NO_VIO_TYPE passed as type the call will fail.

  @return
    0  success
    1  failure
*/
int srv_session_info_set_connection_type(MYSQL_SESSION session,
                                         enum enum_vio_type type);

/**
  Returns whether the session was killed

  @param session  Session

  @return
    0  not killed
    1  killed
*/
int srv_session_info_killed(MYSQL_SESSION session);

/**
  Returns the number opened sessions in thread initialized by srv_session
  service.
*/
unsigned int srv_session_info_session_count();


/**
  Returns the number opened sessions in thread initialized by srv_session
  service.

  @param plugin Pointer to the plugin structure, passed to the plugin over
                the plugin init function.
*/
unsigned int srv_session_info_thread_count(const void *plugin);

#endif /* MYSQL_DYNAMIC_PLUGIN */

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* MYSQL_SERVICE_SRV_SESSION_INFO_INCLUDED */

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