taskq.h revision 196295
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/proc.h> 31#include <sys/taskqueue.h> 32 33#ifdef __cplusplus 34extern "C" { 35#endif 36 37#define TASKQ_NAMELEN 31 38 39struct taskqueue; 40struct taskq { 41 struct taskqueue *tq_queue; 42}; 43 44typedef struct taskq taskq_t; 45typedef uintptr_t taskqid_t; 46typedef void (task_func_t)(void *); 47 48/* 49 * Public flags for taskq_create(): bit range 0-15 50 */ 51#define TASKQ_PREPOPULATE 0x0001 /* Prepopulate with threads and data */ 52#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 53#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 54#define TASKQ_THREADS_CPU_PCT 0x0008 /* number of threads as % of ncpu */ 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 65#ifdef _KERNEL 66 67extern taskq_t *system_taskq; 68 69extern void taskq_init(void); 70extern void taskq_mp_init(void); 71 72extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 73extern taskq_t *taskq_create_instance(const char *, int, int, pri_t, int, 74 int, uint_t); 75extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 76extern void nulltask(void *); 77extern void taskq_destroy(taskq_t *); 78extern void taskq_wait(taskq_t *); 79extern void taskq_suspend(taskq_t *); 80extern int taskq_suspended(taskq_t *); 81extern void taskq_resume(taskq_t *); 82extern int taskq_member(taskq_t *, kthread_t *); 83 84#endif /* _KERNEL */ 85 86#ifdef __cplusplus 87} 88#endif 89 90#endif /* _SYS_TASKQ_H */ 91