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 /* 43 * Public flags for taskq_create(): bit range 0-15 44 */ 45 #define TASKQ_PREPOPULATE 0x0001 /* Prepopulate with threads and data */ 46 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 47 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 48 #define TASKQ_THREADS_CPU_PCT 0x0008 /* number of threads as % of ncpu */ 49 50 /* 51 * Flags for taskq_dispatch. TQ_SLEEP/TQ_NOSLEEP should be same as 52 * KM_SLEEP/KM_NOSLEEP. 53 */ 54 #define TQ_SLEEP 0x00 /* Can block for memory */ 55 #define TQ_NOSLEEP 0x01 /* cannot block for memory; may fail */ 56 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 57 #define TQ_NOALLOC 0x04 /* cannot allocate memory; may fail */ 58 59 #ifdef _KERNEL 60 61 extern taskq_t *system_taskq; 62 63 extern void taskq_init(void); 64 extern void taskq_mp_init(void); 65 66 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 67 extern taskq_t *taskq_create_instance(const char *, int, int, pri_t, int, 68 int, uint_t); 69 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 70 extern void nulltask(void *); 71 extern void taskq_destroy(taskq_t *); 72 extern void taskq_wait(taskq_t *); 73 extern void taskq_suspend(taskq_t *); 74 extern int taskq_suspended(taskq_t *); 75 extern void taskq_resume(taskq_t *); 76 extern int taskq_member(taskq_t *, kthread_t *); 77 78 #endif /* _KERNEL */ 79 80 #ifdef __cplusplus 81 } 82 #endif 83 84 #endif /* _SYS_TASKQ_H */ 85