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 * Copyright 2018, Joyent, Inc. 27 */ 28 29 #ifndef _SYS_TASKQ_H 30 #define _SYS_TASKQ_H 31 32 #include <sys/types.h> 33 #include <sys/thread.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 #define TASKQ_NAMELEN 31 40 41 typedef struct taskq taskq_t; 42 typedef uintptr_t taskqid_t; 43 typedef void (task_func_t)(void *); 44 45 struct proc; 46 47 /* 48 * Public flags for taskq_create(): bit range 0-15 49 */ 50 #define TASKQ_PREPOPULATE 0x0001 /* Prepopulate with threads and data */ 51 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 52 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 53 #define TASKQ_THREADS_CPU_PCT 0x0008 /* number of threads as % of ncpu */ 54 #define TASKQ_DC_BATCH 0x0010 /* Taskq uses SDC in batch mode */ 55 56 /* 57 * Flags for taskq_dispatch. TQ_SLEEP/TQ_NOSLEEP should be same as 58 * KM_SLEEP/KM_NOSLEEP. 59 */ 60 #define TQ_SLEEP 0x00 /* Can block for memory */ 61 #define TQ_NOSLEEP 0x01 /* cannot block for memory; may fail */ 62 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 63 #define TQ_NOALLOC 0x04 /* cannot allocate memory; may fail */ 64 #define TQ_FRONT 0x08 /* Put task at the front of the queue */ 65 66 #define TASKQID_INVALID ((taskqid_t)0) 67 68 #if defined(_KERNEL) || defined(_FAKE_KERNEL) 69 70 extern taskq_t *system_taskq; 71 72 extern void taskq_init(void); 73 extern void taskq_mp_init(void); 74 75 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 76 extern taskq_t *taskq_create_instance(const char *, int, int, pri_t, int, 77 int, uint_t); 78 extern taskq_t *taskq_create_proc(const char *, int, pri_t, int, int, 79 struct proc *, uint_t); 80 extern taskq_t *taskq_create_sysdc(const char *, int, int, int, 81 struct proc *, uint_t, uint_t); 82 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 83 extern void nulltask(void *); 84 extern void taskq_destroy(taskq_t *); 85 extern void taskq_wait(taskq_t *); 86 void taskq_wait_id(taskq_t *, taskqid_t); 87 extern boolean_t taskq_empty(taskq_t *); 88 extern void taskq_suspend(taskq_t *); 89 extern int taskq_suspended(taskq_t *); 90 extern void taskq_resume(taskq_t *); 91 extern int taskq_member(taskq_t *, kthread_t *); 92 93 #endif /* _KERNEL */ 94 95 #ifdef __cplusplus 96 } 97 #endif 98 99 #endif /* _SYS_TASKQ_H */ 100