99 lines
2.9 KiB
C
99 lines
2.9 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: 2022-01-01
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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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#include <maxscale/cdefs.h>
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#include <maxscale/session.h>
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#include <maxscale/worker.h>
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MXS_BEGIN_DECLS
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// The worker ID of the "main" thread
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#define MXS_RWORKER_MAIN -1
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/**
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* Return the routing worker associated with the provided worker id.
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*
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* @param worker_id A worker id. If MXS_RWORKER_MAIN is used, the
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* routing worker running in the main thread will
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* be returned.
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*
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* @return The corresponding routing worker instance, or NULL if the
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* id does not correspond to a routing worker.
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*/
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MXS_WORKER* mxs_rworker_get(int worker_id);
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/**
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* Return the current routing worker.
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*
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* @return A routing worker, or NULL if there is no current routing worker.
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*/
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MXS_WORKER* mxs_rworker_get_current();
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/**
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* Return the id of the current routing worker.
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*
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* @return The id of the routing worker, or -1 if there is no current
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* routing worker.
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*/
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int mxs_rworker_get_current_id();
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/**
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* Broadcast a message to all routing workers.
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*
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* @param msg_id The message id.
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* @param arg1 Message specific first argument.
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* @param arg2 Message specific second argument.
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*
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* @return The number of messages posted; if less that ne number of workers
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* then some postings failed.
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*
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* @attention The return value tells *only* whether message could be posted,
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* *not* that it has reached the worker.
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*
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* @attentsion Exactly the same arguments are passed to all workers. Take that
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* into account if the passed data must be freed.
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*
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* @attention This function is signal safe.
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*/
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size_t mxs_rworker_broadcast_message(uint32_t msg_id, intptr_t arg1, intptr_t arg2);
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/**
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* Add a session to the current routing worker's session container. Currently
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* only required for some special commands e.g. "KILL <process_id>" to work.
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*
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* @param session Session to add.
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* @return true if successful, false if id already existed in map.
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*/
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bool mxs_rworker_register_session(MXS_SESSION* session);
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/**
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* Remove a session from the current routing worker's session container. Does
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* not actually remove anything from an epoll-set or affect the session in any
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* way.
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*
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* @param id Which id to remove.
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* @return The removed session or NULL if not found.
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*/
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bool mxs_rworker_deregister_session(uint64_t id);
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/**
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* Find a session in the current routing worker's session container.
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*
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* @param id Which id to find.
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* @return The found session or NULL if not found.
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*/
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MXS_SESSION* mxs_rworker_find_session(uint64_t id);
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MXS_END_DECLS
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