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https://gitlab.isc.org/isc-projects/bind9
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b5bf58b419
With taskmgr running on top of netmgr, the ordering of how the tasks and
netmgr shutdown interacts was wrong as previously isc_taskmgr_destroy()
was waiting until all tasks were properly shutdown and detached. This
responsibility was moved to netmgr, so we now need to do the following:
1. shutdown all the tasks - this schedules all shutdown events onto
the netmgr queue
2. shutdown the netmgr - this also makes sure all the tasks and
events are properly executed
3. Shutdown the taskmgr - this now waits for all the tasks to finish
running before returning
4. Shutdown the netmgr - this call waits for all the netmgr netievents
to finish before returning
This solves the race when the taskmgr object would be destroyed before
all the tasks were finished running in the netmgr loops.
37 lines
962 B
C
37 lines
962 B
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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#pragma once
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#include <isc/mem.h>
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#include <isc/result.h>
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void
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isc__netmgr_create(isc_mem_t *mctx, uint32_t workers, isc_nm_t **netgmrp);
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/*%<
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* Creates a new network manager with 'workers' worker threads,
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* and starts it running.
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*/
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void
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isc__netmgr_destroy(isc_nm_t **netmgrp);
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/*%<
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* Similar to isc_nm_detach(), but actively waits for all other references
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* to be gone before returning.
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*/
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void
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isc__netmgr_shutdown(isc_nm_t *mgr);
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/*%<
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* Shut down all active connections, freeing associated resources;
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* prevent new connections from being established.
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*/
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