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