94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _THREAD_POOL_IMPL_H
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#define _THREAD_POOL_IMPL_H
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#include <thread_pool.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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* Thread pool implementation definitions.
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* See <thread_pool.h> for interface declarations.
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*/
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/*
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* FIFO queued job
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*/
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typedef struct tpool_job tpool_job_t;
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struct tpool_job {
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tpool_job_t *tpj_next; /* list of jobs */
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void (*tpj_func)(void *); /* function to call */
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void *tpj_arg; /* its argument */
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};
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/*
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* List of active threads, linked through their stacks.
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*/
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typedef struct tpool_active tpool_active_t;
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struct tpool_active {
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tpool_active_t *tpa_next; /* list of active threads */
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pthread_t tpa_tid; /* active thread id */
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};
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/*
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* The thread pool.
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*/
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struct tpool {
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tpool_t *tp_forw; /* circular list of all thread pools */
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tpool_t *tp_back;
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pthread_mutex_t tp_mutex; /* protects the pool data */
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pthread_cond_t tp_busycv; /* synchronization in tpool_dispatch */
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pthread_cond_t tp_workcv; /* synchronization with workers */
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pthread_cond_t tp_waitcv; /* synchronization in tpool_wait() */
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tpool_active_t *tp_active; /* threads performing work */
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tpool_job_t *tp_head; /* FIFO job queue */
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tpool_job_t *tp_tail;
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pthread_attr_t tp_attr; /* attributes of the workers */
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int tp_flags; /* see below */
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uint_t tp_linger; /* seconds before idle workers exit */
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int tp_njobs; /* number of jobs in job queue */
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int tp_minimum; /* minimum number of worker threads */
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int tp_maximum; /* maximum number of worker threads */
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int tp_current; /* current number of worker threads */
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int tp_idle; /* number of idle workers */
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};
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/* tp_flags */
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#define TP_WAIT 0x01 /* waiting in tpool_wait() */
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#define TP_SUSPEND 0x02 /* pool is being suspended */
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#define TP_DESTROY 0x04 /* pool is being destroyed */
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#define TP_ABANDON 0x08 /* pool is abandoned (auto-destroy) */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _THREAD_POOL_IMPL_H */
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