external/cddl/osnet/dist/uts/common/sys/taskq.h

   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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_TASKQ_H
  28 #define _SYS_TASKQ_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  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 /*
  46  * Public flags for taskq_create(): bit range 0-15
  47  */
  48 #define TASKQ_PREPOPULATE       0x0001  /* Prepopulate with threads and data */
  49 #define TASKQ_CPR_SAFE          0x0002  /* Use CPR safe protocol */
  50 #define TASKQ_DYNAMIC           0x0004  /* Use dynamic thread scheduling */
  51
  52 /*
  53  * Flags for taskq_dispatch. TQ_SLEEP/TQ_NOSLEEP should be same as
  54  * KM_SLEEP/KM_NOSLEEP.
  55  */
  56 #define TQ_SLEEP        0x00    /* Can block for memory */
  57 #define TQ_NOSLEEP      0x01    /* cannot block for memory; may fail */
  58 #define TQ_NOQUEUE      0x02    /* Do not enqueue if can't dispatch */
  59 #define TQ_NOALLOC      0x04    /* cannot allocate memory; may fail */
  60
  61 #ifdef _KERNEL
  62
  63 extern taskq_t *system_taskq;
  64
  65 extern void     taskq_init(void);
  66
  67 extern taskq_t  *taskq_create(const char *, int, pri_t, int, int, uint_t);
  68 extern taskq_t  *taskq_create_instance(const char *, int, int, pri_t, int,
  69     int, uint_t);
  70 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
  71 extern void     nulltask(void *);
  72 extern void     taskq_destroy(taskq_t *);
  73 extern void     taskq_wait(taskq_t *);
  74 extern void     taskq_suspend(taskq_t *);
  75 extern int      taskq_suspended(taskq_t *);
  76 extern void     taskq_resume(taskq_t *);
  77 extern int      taskq_member(taskq_t *, kthread_t *);
  78
  79 #endif  /* _KERNEL */
  80
  81 #ifdef  __cplusplus
  82 }
  83 #endif
  84
  85 #endif  /* _SYS_TASKQ_H */