643fc825fa
By storing a link to the backend DCBs in the session object itself, we can reach all related objects from the session. This removes the need to iterate over all DCBs to find the set of related DCBs.
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
#pragma once
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/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2020-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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/**
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* @file core/maxscale/session.h - The private session interface
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*/
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#include <maxscale/session.h>
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MXS_BEGIN_DECLS
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#define SESSION_STATS_INIT {0}
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#define MXS_DOWNSTREAM_INIT {0}
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#define MXS_UPSTREAM_INIT {0}
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#define SESSION_FILTER_INIT {0}
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#define SESSION_INIT {.ses_chk_top = CHK_NUM_SESSION, \
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.stats = SESSION_STATS_INIT, .head = MXS_DOWNSTREAM_INIT, .tail = MXS_UPSTREAM_INIT, \
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.state = SESSION_STATE_ALLOC, .client_protocol_data = 0, .ses_chk_tail = CHK_NUM_SESSION}
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#define SESSION_PROTOCOL(x, type) DCB_PROTOCOL((x)->client_dcb, type)
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/**
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* Filter type for the sessionGetList call
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*/
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typedef enum
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{
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SESSION_LIST_ALL,
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SESSION_LIST_CONNECTION
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} SESSIONLISTFILTER;
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int session_isvalid(MXS_SESSION *);
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const char *session_state(mxs_session_state_t);
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/**
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* Link a session to a backend DCB.
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*
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* @param session The session to link with the dcb
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* @param dcb The backend DCB to be linked
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*/
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void session_link_backend_dcb(MXS_SESSION *session, struct dcb *dcb);
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/**
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* Unlink a session to a backend DCB.
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*
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* @param session The session to unlink with the dcb
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* @param dcb The backend DCB to be unlinked
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*/
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void session_unlink_backend_dcb(MXS_SESSION *session, struct dcb *dcb);
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RESULTSET *sessionGetList(SESSIONLISTFILTER);
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void printAllSessions();
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void printSession(MXS_SESSION *);
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void dprintSessionList(DCB *pdcb);
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void dprintAllSessions(struct dcb *);
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void dprintSession(struct dcb *, MXS_SESSION *);
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void dListSessions(struct dcb *);
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/**
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* @brief Get a session reference
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*
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* This creates an additional reference to a session which allows it to live
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* as long as it is needed.
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*
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* @param session Session reference to get
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* @return Reference to a MXS_SESSION
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*
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* @note The caller must free the session reference by calling session_put_ref
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*/
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MXS_SESSION* session_get_ref(MXS_SESSION *sessoin);
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MXS_END_DECLS
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