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54 lines
1.3 KiB
C
54 lines
1.3 KiB
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 http://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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typedef struct isc_queue isc_queue_t;
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isc_queue_t *
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isc_queue_new(isc_mem_t *mctx, int max_threads);
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/*%<
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* Create a new fetch-and-add array queue.
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*
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* 'max_threads' is currently unused. In the future it can be used
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* to pass a maximum threads parameter when creating hazard pointers,
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* but currently `isc_hp_t` uses a hard-coded value.
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*/
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void
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isc_queue_enqueue(isc_queue_t *queue, uintptr_t item);
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/*%<
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* Enqueue an object pointer 'item' at the tail of the queue.
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*
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* Requires:
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* \li 'item' is not null.
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*/
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uintptr_t
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isc_queue_dequeue(isc_queue_t *queue);
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/*%<
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* Remove an object pointer from the head of the queue and return the
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* pointer. If the queue is empty, return `nulluintptr` (the uintptr_t
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* representation of NULL).
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*
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* Requires:
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* \li 'queue' is not null.
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*/
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void
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isc_queue_destroy(isc_queue_t *queue);
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/*%<
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* Destroy a queue.
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*
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* Requires:
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* \li 'queue' is not null.
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*/
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