4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
31 #ifndef _THREAD_POOL_IMPL_H
32 #define _THREAD_POOL_IMPL_H
34 #pragma ident "%Z%%M% %I% %E% SMI"
36 #include <thread_pool.h>
43 * Thread pool implementation definitions.
44 * See <thread_pool.h> for interface declarations.
50 typedef struct tpool_job tpool_job_t;
52 tpool_job_t *tpj_next; /* list of jobs */
53 void (*tpj_func)(void *); /* function to call */
54 void *tpj_arg; /* its argument */
58 * List of active threads, linked through their stacks.
60 typedef struct tpool_active tpool_active_t;
62 tpool_active_t *tpa_next; /* list of active threads */
63 pthread_t tpa_tid; /* active thread id */
70 tpool_t *tp_forw; /* circular list of all thread pools */
72 mutex_t tp_mutex; /* protects the pool data */
73 cond_t tp_busycv; /* synchronization in tpool_dispatch */
74 cond_t tp_workcv; /* synchronization with workers */
75 cond_t tp_waitcv; /* synchronization in tpool_wait() */
76 tpool_active_t *tp_active; /* threads performing work */
77 tpool_job_t *tp_head; /* FIFO job queue */
79 pthread_attr_t tp_attr; /* attributes of the workers */
80 int tp_flags; /* see below */
81 uint_t tp_linger; /* seconds before idle workers exit */
82 int tp_njobs; /* number of jobs in job queue */
83 int tp_minimum; /* minimum number of worker threads */
84 int tp_maximum; /* maximum number of worker threads */
85 int tp_current; /* current number of worker threads */
86 int tp_idle; /* number of idle workers */
90 #define TP_WAIT 0x01 /* waiting in tpool_wait() */
91 #define TP_SUSPEND 0x02 /* pool is being suspended */
92 #define TP_DESTROY 0x04 /* pool is being destroyed */
93 #define TP_ABANDON 0x08 /* pool is abandoned (auto-destroy) */
99 #endif /* _THREAD_POOL_IMPL_H */