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common
src
include
citrusleaf
src/include/citrusleaf/cf_queue_priority.h
Go to the documentation of this file.
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/******************************************************************************
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* Copyright 2008-2013 by Aerospike.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*****************************************************************************/
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#pragma once
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/*
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* A simple priority queue implementation, which is simply a set of queues underneath.
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* This currently doesn't support 'delete' and 'reduce' functionality
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*/
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#include "
cf_queue.h
"
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#ifdef __cplusplus
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extern
"C"
{
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#endif
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/******************************************************************************
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* CONSTANTS
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******************************************************************************/
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#define CF_QUEUE_PRIORITY_HIGH 1
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#define CF_QUEUE_PRIORITY_MEDIUM 2
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#define CF_QUEUE_PRIORITY_LOW 3
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/******************************************************************************
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* TYPES
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******************************************************************************/
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typedef
struct
cf_queue_priority_s
cf_queue_priority;
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struct
cf_queue_priority_s
{
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bool
threadsafe
;
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cf_queue *
low_q
;
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cf_queue *
medium_q
;
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cf_queue *
high_q
;
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pthread_mutex_t
LOCK
;
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pthread_cond_t
CV
;
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};
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/******************************************************************************
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* FUNCTIONS
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******************************************************************************/
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cf_queue_priority *
cf_queue_priority_create
(
size_t
elementsz,
bool
threadsafe);
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void
cf_queue_priority_destroy
(cf_queue_priority *q);
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int
cf_queue_priority_push
(cf_queue_priority *q,
void
*ptr,
int
pri);
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int
cf_queue_priority_pop
(cf_queue_priority *q,
void
*buf,
int
mswait);
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int
cf_queue_priority_sz
(cf_queue_priority *q);
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int
cf_queue_priority_reduce_pop
(cf_queue_priority *priority_q,
void
*buf,
cf_queue_reduce_fn
cb,
void
*udata);
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/******************************************************************************
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* MACROS
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******************************************************************************/
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#define CF_Q_PRI_EMPTY(__q) (CF_Q_EMPTY(__q->low_q) && CF_Q_EMPTY(__q->medium_q) && CF_Q_EMPTY(__q->high_q))
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/******************************************************************************/
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#ifdef __cplusplus
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}
// end extern "C"
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#endif