1 /* 2 * CDDL HEADER START 3 * 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. 7 * 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. 12 * 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] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * $FreeBSD: head/cddl/compat/opensolaris/misc/thread_pool_impl.h 265689 2014-05-08 16:59:36Z mav $ 29 */ 30 31 #ifndef _THREAD_POOL_IMPL_H 32 #define _THREAD_POOL_IMPL_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include <thread_pool.h> 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /* 43 * Thread pool implementation definitions. 44 * See <thread_pool.h> for interface declarations. 45 */ 46 47 /* 48 * FIFO queued job 49 */ 50 typedef struct tpool_job tpool_job_t; 51 struct tpool_job { 52 tpool_job_t *tpj_next; /* list of jobs */ 53 void (*tpj_func)(void *); /* function to call */ 54 void *tpj_arg; /* its argument */ 55 }; 56 57 /* 58 * List of active threads, linked through their stacks. 59 */ 60 typedef struct tpool_active tpool_active_t; 61 struct tpool_active { 62 tpool_active_t *tpa_next; /* list of active threads */ 63 pthread_t tpa_tid; /* active thread id */ 64 }; 65 66 /* 67 * The thread pool. 68 */ 69 struct tpool { 70 tpool_t *tp_forw; /* circular list of all thread pools */ 71 tpool_t *tp_back; 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 */ 78 tpool_job_t *tp_tail; 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 */ 87 }; 88 89 /* tp_flags */ 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) */ 94 95 #ifdef __cplusplus 96 } 97 #endif 98 99 #endif /* _THREAD_POOL_IMPL_H */ 100