1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _SYS_TASKQ_IMPL_H 28*0Sstevel@tonic-gate #define _SYS_TASKQ_IMPL_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <sys/taskq.h> 33*0Sstevel@tonic-gate #include <sys/vmem.h> 34*0Sstevel@tonic-gate #include <sys/kstat.h> 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #ifdef __cplusplus 37*0Sstevel@tonic-gate extern "C" { 38*0Sstevel@tonic-gate #endif 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate typedef struct taskq_bucket taskq_bucket_t; 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate typedef struct taskq_ent { 43*0Sstevel@tonic-gate struct taskq_ent *tqent_next; 44*0Sstevel@tonic-gate struct taskq_ent *tqent_prev; 45*0Sstevel@tonic-gate task_func_t *tqent_func; 46*0Sstevel@tonic-gate void *tqent_arg; 47*0Sstevel@tonic-gate taskq_bucket_t *tqent_bucket; 48*0Sstevel@tonic-gate kthread_t *tqent_thread; 49*0Sstevel@tonic-gate kcondvar_t tqent_cv; 50*0Sstevel@tonic-gate } taskq_ent_t; 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate /* 53*0Sstevel@tonic-gate * Taskq Statistics fields are not protected by any locks. 54*0Sstevel@tonic-gate */ 55*0Sstevel@tonic-gate typedef struct tqstat { 56*0Sstevel@tonic-gate uint_t tqs_hits; 57*0Sstevel@tonic-gate uint_t tqs_misses; 58*0Sstevel@tonic-gate uint_t tqs_overflow; /* no threads to allocate */ 59*0Sstevel@tonic-gate uint_t tqs_tcreates; /* threads created */ 60*0Sstevel@tonic-gate uint_t tqs_tdeaths; /* threads died */ 61*0Sstevel@tonic-gate uint_t tqs_maxthreads; /* max # of alive threads */ 62*0Sstevel@tonic-gate uint_t tqs_nomem; /* # of times there were no memory */ 63*0Sstevel@tonic-gate uint_t tqs_disptcreates; 64*0Sstevel@tonic-gate } tqstat_t; 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate /* 67*0Sstevel@tonic-gate * Per-CPU hash bucket manages taskq_bent_t structures using freelist. 68*0Sstevel@tonic-gate */ 69*0Sstevel@tonic-gate struct taskq_bucket { 70*0Sstevel@tonic-gate kmutex_t tqbucket_lock; 71*0Sstevel@tonic-gate taskq_t *tqbucket_taskq; /* Enclosing taskq */ 72*0Sstevel@tonic-gate taskq_ent_t tqbucket_freelist; 73*0Sstevel@tonic-gate uint_t tqbucket_nalloc; /* # of allocated entries */ 74*0Sstevel@tonic-gate uint_t tqbucket_nfree; /* # of free entries */ 75*0Sstevel@tonic-gate kcondvar_t tqbucket_cv; 76*0Sstevel@tonic-gate ushort_t tqbucket_flags; 77*0Sstevel@tonic-gate hrtime_t tqbucket_totaltime; 78*0Sstevel@tonic-gate tqstat_t tqbucket_stat; 79*0Sstevel@tonic-gate }; 80*0Sstevel@tonic-gate 81*0Sstevel@tonic-gate /* 82*0Sstevel@tonic-gate * Bucket flags. 83*0Sstevel@tonic-gate */ 84*0Sstevel@tonic-gate #define TQBUCKET_CLOSE 0x01 85*0Sstevel@tonic-gate #define TQBUCKET_SUSPEND 0x02 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* 88*0Sstevel@tonic-gate * taskq implementation flags: bit range 16-31 89*0Sstevel@tonic-gate */ 90*0Sstevel@tonic-gate #define TASKQ_ACTIVE 0x00010000 91*0Sstevel@tonic-gate #define TASKQ_SUSPENDED 0x00020000 92*0Sstevel@tonic-gate #define TASKQ_NOINSTANCE 0x00040000 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate struct taskq { 95*0Sstevel@tonic-gate char tq_name[TASKQ_NAMELEN + 1]; 96*0Sstevel@tonic-gate kmutex_t tq_lock; 97*0Sstevel@tonic-gate krwlock_t tq_threadlock; 98*0Sstevel@tonic-gate kcondvar_t tq_dispatch_cv; 99*0Sstevel@tonic-gate kcondvar_t tq_wait_cv; 100*0Sstevel@tonic-gate uint_t tq_flags; 101*0Sstevel@tonic-gate int tq_active; 102*0Sstevel@tonic-gate int tq_nthreads; 103*0Sstevel@tonic-gate int tq_nalloc; 104*0Sstevel@tonic-gate int tq_minalloc; 105*0Sstevel@tonic-gate int tq_maxalloc; 106*0Sstevel@tonic-gate taskq_ent_t *tq_freelist; 107*0Sstevel@tonic-gate taskq_ent_t tq_task; 108*0Sstevel@tonic-gate int tq_maxsize; 109*0Sstevel@tonic-gate pri_t tq_pri; /* Scheduling priority */ 110*0Sstevel@tonic-gate taskq_bucket_t *tq_buckets; /* Per-cpu array of buckets */ 111*0Sstevel@tonic-gate int tq_instance; 112*0Sstevel@tonic-gate uint_t tq_nbuckets; /* # of buckets (2^n) */ 113*0Sstevel@tonic-gate union { 114*0Sstevel@tonic-gate kthread_t *_tq_thread; 115*0Sstevel@tonic-gate kthread_t **_tq_threadlist; 116*0Sstevel@tonic-gate } tq_thr; 117*0Sstevel@tonic-gate /* 118*0Sstevel@tonic-gate * Statistics. 119*0Sstevel@tonic-gate */ 120*0Sstevel@tonic-gate kstat_t *tq_kstat; /* Exported statistics */ 121*0Sstevel@tonic-gate hrtime_t tq_totaltime; /* Time spent processing tasks */ 122*0Sstevel@tonic-gate int tq_tasks; /* Total # of tasks posted */ 123*0Sstevel@tonic-gate int tq_executed; /* Total # of tasks executed */ 124*0Sstevel@tonic-gate int tq_maxtasks; /* Max number of tasks in the queue */ 125*0Sstevel@tonic-gate int tq_tcreates; 126*0Sstevel@tonic-gate int tq_tdeaths; 127*0Sstevel@tonic-gate }; 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate #define tq_thread tq_thr._tq_thread 130*0Sstevel@tonic-gate #define tq_threadlist tq_thr._tq_threadlist 131*0Sstevel@tonic-gate 132*0Sstevel@tonic-gate #ifdef __cplusplus 133*0Sstevel@tonic-gate } 134*0Sstevel@tonic-gate #endif 135*0Sstevel@tonic-gate 136*0Sstevel@tonic-gate #endif /* _SYS_TASKQ_IMPL_H */ 137