usr/src/uts/common/fs/zfs/sys/zthr.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * This file and its contents are supplied under the terms of the
   5  * Common Development and Distribution License ("CDDL"), version 1.0.
   6  * You may only use this file in accordance with the terms of version
   7  * 1.0 of the CDDL.
   8  *
   9  * A full copy of the text of the CDDL should have accompanied this
  10  * source. A copy of the CDDL is also available via the Internet at
  11  * http://www.illumos.org/license/CDDL.
  12  *
  13  * CDDL HEADER END
  14  */
  15
  16 /*
  17  * Copyright (c) 2017 by Delphix. All rights reserved.
  18  */
  19
  20 #ifndef _SYS_ZTHR_H
  21 #define _SYS_ZTHR_H
  22
  23 typedef struct zthr zthr_t;
  24 typedef int (zthr_func_t)(void *, zthr_t *);
  25 typedef boolean_t (zthr_checkfunc_t)(void *, zthr_t *);
  26
  27 struct zthr {
  28         kthread_t       *zthr_thread;
  29         kmutex_t        zthr_lock;
  30         kcondvar_t      zthr_cv;
  31         boolean_t       zthr_cancel;
  32         hrtime_t        zthr_wait_time;
  33
  34         zthr_checkfunc_t        *zthr_checkfunc;
  35         zthr_func_t     *zthr_func;
  36         void            *zthr_arg;
  37         int             zthr_rc;
  38 };
  39
  40 extern zthr_t *zthr_create(zthr_checkfunc_t checkfunc,
  41     zthr_func_t *func, void *arg);
  42 extern zthr_t *zthr_create_timer(zthr_checkfunc_t *checkfunc,
  43     zthr_func_t *func, void *arg, hrtime_t nano_wait);
  44
  45 extern void zthr_exit(zthr_t *t, int rc);
  46 extern void zthr_destroy(zthr_t *t);
  47
  48 extern void zthr_wakeup(zthr_t *t);
  49 extern int zthr_cancel(zthr_t *t);
  50 extern void zthr_resume(zthr_t *t);
  51
  52 extern boolean_t zthr_iscancelled(zthr_t *t);
  53 extern boolean_t zthr_isrunning(zthr_t *t);
  54
  55 #endif /* _SYS_ZTHR_H */