eventcount.h

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1993-1987 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  * 
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  * 
   16  * Carnegie Mellon requests users of this software to return to
   17  * 
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  * 
   23  * any improvements or extensions that they make and grant Carnegie Mellon
   24  * the rights to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        eventcount.h,v $
   29  * Revision 2.7  93/11/17  17:09:07  dbg
   30  *      Changed evc_notify_abort to evc_wait_interrupt, since it is only
   31  *      used by thread_halt (to 'interrupt' an evc_wait).  It knows
   32  *      about the evc_wait continuation.
   33  *      [93/08/20            dbg]
   34  * 
   35  *      Added return value to evc_init.
   36  *      [93/03/02            dbg]
   37  * 
   38  *      Added include files for data types used.
   39  *      [93/01/28            dbg]
   40  * 
   41  * Revision 2.6  93/08/10  15:12:05  mrt
   42  *      Changed ev_id to natural_t to match the changes in
   43  *      eventcount.c
   44  *      [93/08/03            mrt]
   45  * 
   46  * Revision 2.5  93/01/24  13:18:53  danner
   47  *      Prototypes, evc_notify_abort.
   48  *      [93/01/22            danner]
   49  * 
   50  * Revision 2.4  93/01/14  17:34:03  danner
   51  *      Allow count to go negative.
   52  *      [92/12/15            af]
   53  * 
   54  * Revision 2.3  92/01/03  20:40:10  dbg
   55  *      Added id field to make user-safe.  Since we have not
   56  *      decided what the user-interface will look like (and
   57  *      we are using it nonetheless) do not define anything.
   58  *      [91/12/27            af]
   59  * 
   60  * Revision 2.2  91/12/13  14:54:47  jsb
   61  *      Created.
   62  *      [91/11/01            af]
   63  * 
   64  */
   65 /*
   66  *      File:   eventcount.c
   67  *      Author: Alessandro Forin
   68  *      Date:   10/91
   69  *
   70  *      Eventcounters, for user-level drivers synchronization
   71  *
   72  */
   73 
   74 #ifndef _KERN_EVENTCOUNT_H_
   75 #define _KERN_EVENTCOUNT_H_     1
   76 
   77 #include <mach/boolean.h>
   78 #include <mach/kern_return.h>
   79 #include <mach/machine/vm_types.h>              /* for natural_t */
   80 #include <kern/kern_types.h>
   81 #include <kern/lock.h>
   82 
   83 /* kernel visible only */
   84 
   85 typedef struct evc {
   86         int             count;
   87         thread_t        waiting_thread;
   88         natural_t       ev_id;
   89         struct evc      *sanity;
   90         decl_simple_lock_data(, lock)
   91 } *evc_t;
   92 
   93 extern kern_return_t evc_init(evc_t ev);
   94 
   95 extern void     evc_destroy(evc_t ev);
   96 extern void     evc_signal(evc_t ev);
   97 extern boolean_t evc_wait_interrupt(thread_t thread);
   98 
   99 /* kernel and user visible */
  100 
  101 extern  kern_return_t   evc_wait(natural_t ev_id);
  102 extern  kern_return_t   evc_wait_clear(natural_t ev_id);
  103 
  104 #endif  /* _KERN_EVENTCOUNT_H_ */

Cache object: 1ef4183abea3f21639aa3be26fdc84da

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/kern/eventcount.h

FreeBSD/Linux Kernel Cross Reference
sys/kern/eventcount.h