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 https://opensource.org/licenses/CDDL-1.0. 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 #ifdef _KERNEL 30 31 #include <sys/types.h> 32 #include <sys/proc.h> 33 #include <sys/taskqueue.h> 34 #include <sys/thread.h> 35 #include <sys/ck.h> 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 #define TASKQ_NAMELEN 31 42 43 typedef struct taskq { 44 struct taskqueue *tq_queue; 45 } taskq_t; 46 47 typedef uintptr_t taskqid_t; 48 typedef void (task_func_t)(void *); 49 50 typedef struct taskq_ent { 51 struct task tqent_task; 52 struct timeout_task tqent_timeout_task; 53 task_func_t *tqent_func; 54 void *tqent_arg; 55 taskqid_t tqent_id; 56 CK_LIST_ENTRY(taskq_ent) tqent_hash; 57 uint8_t tqent_type; 58 uint8_t tqent_registered; 59 uint8_t tqent_cancelled; 60 volatile uint32_t tqent_rc; 61 } taskq_ent_t; 62 63 /* 64 * Public flags for taskq_create(): bit range 0-15 65 */ 66 #define TASKQ_PREPOPULATE 0x0001 /* Prepopulate with threads and data */ 67 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 68 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 69 #define TASKQ_THREADS_CPU_PCT 0x0008 /* number of threads as % of ncpu */ 70 #define TASKQ_DC_BATCH 0x0010 /* Taskq uses SDC in batch mode */ 71 72 /* 73 * Flags for taskq_dispatch. TQ_SLEEP/TQ_NOSLEEP should be same as 74 * KM_SLEEP/KM_NOSLEEP. 75 */ 76 #define TQ_SLEEP 0x00 /* Can block for memory */ 77 #define TQ_NOSLEEP 0x01 /* cannot block for memory; may fail */ 78 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 79 #define TQ_NOALLOC 0x04 /* cannot allocate memory; may fail */ 80 #define TQ_FRONT 0x08 /* Put task at the front of the queue */ 81 82 #define TASKQID_INVALID ((taskqid_t)0) 83 84 #define taskq_init_ent(x) 85 extern taskq_t *system_taskq; 86 /* Global dynamic task queue for long delay */ 87 extern taskq_t *system_delay_taskq; 88 89 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 90 extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *, 91 uint_t, clock_t); 92 extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, 93 taskq_ent_t *); 94 extern int taskq_empty_ent(taskq_ent_t *); 95 taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 96 taskq_t *taskq_create_instance(const char *, int, int, pri_t, int, int, uint_t); 97 taskq_t *taskq_create_proc(const char *, int, pri_t, int, int, 98 struct proc *, uint_t); 99 taskq_t *taskq_create_sysdc(const char *, int, int, int, 100 struct proc *, uint_t, uint_t); 101 void nulltask(void *); 102 extern void taskq_destroy(taskq_t *); 103 extern void taskq_wait_id(taskq_t *, taskqid_t); 104 extern void taskq_wait_outstanding(taskq_t *, taskqid_t); 105 extern void taskq_wait(taskq_t *); 106 extern int taskq_cancel_id(taskq_t *, taskqid_t); 107 extern int taskq_member(taskq_t *, kthread_t *); 108 extern taskq_t *taskq_of_curthread(void); 109 void taskq_suspend(taskq_t *); 110 int taskq_suspended(taskq_t *); 111 void taskq_resume(taskq_t *); 112 113 #ifdef __cplusplus 114 } 115 #endif 116 117 #endif /* _KERNEL */ 118 119 #ifdef _STANDALONE 120 typedef int taskq_ent_t; 121 #define taskq_init_ent(x) 122 #endif /* _STANDALONE */ 123 124 #endif /* _SYS_TASKQ_H */ 125