The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

FreeBSD/Linux Kernel Cross Reference
sys/mach/timer.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) 1993,1992 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:        timer.h,v $
   29  * Revision 2.2  93/11/17  17:48:46  dbg
   30  *      Changed 'flags' to 'overruns'.
   31  *      [93/05/06            dbg]
   32  * 
   33  *      64 bit cleanup.
   34  *      [93/02/19            dbg]
   35  * 
   36  *      Fixed to put in kernel.  Based on kernel timer elements.
   37  * 
   38  *      Changed time_values_t to time_spec_t to account for timer hardware skew.
   39  *      [92/07/18       savage]
   40  *      Redefined timer structure for user exportation.  Forced to define
   41  *      it as mach_timer_t instead of timer_t...  I'd love to change timer_t
   42  *      into counter_t but I'm sure the political headache isn't worth it.
   43  *      [92/06/12       savage]
   44  *      changed locks to work on multiprocessor (one hopes...)
   45  *      [92/06/10]      savage]
   46  *      Created
   47  *      [92/05/01       savage]
   48  * 
   49  */
   50 
   51 /*
   52  *      File:           mach/timer.h
   53  *      Authors:        Stefan Savage and David Golub, 1992
   54  *
   55  *      Definitions of the exported timer interface and
   56  *      data structures.
   57  */
   58 
   59 #ifndef _MACH_TIMER_H_
   60 #define _MACH_TIMER_H_
   61 
   62 #include <mach/time_spec.h>
   63 #include <mach/boolean.h>
   64 #include <mach/message.h>
   65 
   66 /*
   67  *      Timers are identified by ports externally.
   68  */
   69 #ifndef KERNEL
   70 typedef mach_port_t     mach_timer_t;
   71 #endif
   72 
   73 /*
   74  *      Flags to timer calls:
   75  */
   76 #define TIMER_ABSOLUTE          0x01    /* expiration time is absolute */
   77 #define TIMER_PERIODIC          0x02    /* timer is periodic */
   78 #define TIMER_THREAD_SUSPEND    0x04    /* suspend thread when timer expires */
   79 #define TIMER_EVENT             0x08    /* signal event when timer expires */
   80 
   81 /*
   82  *      A timer sends an expiration message when the time is up.
   83  *      This message can be interpreted directly, or received
   84  *      through the 'timer_expire' interface.
   85  */
   86 
   87 struct timer_expire_message {
   88         mach_msg_header_t       Head;
   89         mach_msg_type_t         timeType;
   90         time_spec_t             time;
   91 };
   92 
   93 typedef struct timer_expire_message     *timer_expire_message_t;
   94 typedef struct timer_expire_message     timer_expire_message_data_t;
   95 
   96 /*
   97  *      Information that can be requested about timers.
   98  */
   99 typedef natural_t       *mach_timer_info_t;
  100 
  101 /*
  102  *      Basic timer information:
  103  */
  104 #define MACH_TIMER_BASIC_INFO   1
  105 struct mach_timer_basic_info {
  106         natural_t       type;           /* message | event | suspend,
  107                                            periodic */
  108         time_spec_t     expire_time;    /* expiration time */
  109         time_spec_t     interval_time;  /* period, for periodic timers */
  110         natural_t       event;          /* event ID if assigned */
  111         natural_t       overruns;       /* how many times a periodic
  112                                            timer has expired and failed
  113                                            to deliver a message to a
  114                                            full port */
  115         /* boolean_t */
  116             natural_t   enqueued;       /* is timer on queue? */
  117 };
  118 
  119 typedef struct mach_timer_basic_info    *mach_timer_basic_info_t;
  120 typedef struct mach_timer_basic_info    mach_timer_basic_info_data_t;
  121 
  122 #define MACH_TIMER_BASIC_INFO_COUNT     \
  123                 (sizeof(mach_timer_basic_info_data_t) / sizeof(natural_t))
  124 
  125 #endif  /* _MACH_TIMER_H_ */
  126 

Cache object: 9a76f8bb84d42fb9c270517e19a6afb3


[ 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.