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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * 25 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 26 */ 27 28 #ifndef _SYS_TASKQ_H 29 #define _SYS_TASKQ_H 30 31 #include <sys/types.h> 32 #include <sys/thread.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #define TASKQ_NAMELEN 31 39 40 typedef struct taskq taskq_t; 41 typedef uintptr_t taskqid_t; 42 typedef void (task_func_t)(void *); 43 44 struct proc; 45 46 /* 47 * Public flags for taskq_create(): bit range 0-15 48 */ 49 #define TASKQ_PREPOPULATE 0x0001 /* Prepopulate with threads and data */ 50 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 51 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 52 #define TASKQ_THREADS_CPU_PCT 0x0008 /* number of threads as % of ncpu */ 53 #define TASKQ_DC_BATCH 0x0010 /* Taskq uses SDC in batch mode */ 54 55 /* 56 * Flags for taskq_dispatch. TQ_SLEEP/TQ_NOSLEEP should be same as 57 * KM_SLEEP/KM_NOSLEEP. 58 */ 59 #define TQ_SLEEP 0x00 /* Can block for memory */ 60 #define TQ_NOSLEEP 0x01 /* cannot block for memory; may fail */ 61 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 62 #define TQ_NOALLOC 0x04 /* cannot allocate memory; may fail */ 63 #define TQ_FRONT 0x08 /* Put task at the front of the queue */ 64 65 #if defined(_KERNEL) || defined(_FAKE_KERNEL) 66 67 extern taskq_t *system_taskq; 68 69 extern void taskq_init(void); 70 extern void taskq_mp_init(void); 71 72 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 73 extern taskq_t *taskq_create_instance(const char *, int, int, pri_t, int, 74 int, uint_t); 75 extern taskq_t *taskq_create_proc(const char *, int, pri_t, int, int, 76 struct proc *, uint_t); 77 extern taskq_t *taskq_create_sysdc(const char *, int, int, int, 78 struct proc *, uint_t, uint_t); 79 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 80 extern void nulltask(void *); 81 extern void taskq_destroy(taskq_t *); 82 extern void taskq_wait(taskq_t *); 83 extern void taskq_suspend(taskq_t *); 84 extern int taskq_suspended(taskq_t *); 85 extern void taskq_resume(taskq_t *); 86 extern int taskq_member(taskq_t *, kthread_t *); 87 88 #endif /* _KERNEL */ 89 90 #ifdef __cplusplus 91 } 92 #endif 93 94 #endif /* _SYS_TASKQ_H */ 95