exec/timer.c

   1 /*
   2  * Copyright (c) 2002-2006 MontaVista Software, Inc.
   3  * Copyright (c) 2006-2010 Red Hat, Inc.
   4  *
   5  * All rights reserved.
   6  *
   7  * Author: Steven Dake (sdake@redhat.com)
   8  *
   9  * This software licensed under BSD license, the text of which follows:
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions are met:
  13  *
  14  * - Redistributions of source code must retain the above copyright notice,
  15  *   this list of conditions and the following disclaimer.
  16  * - Redistributions in binary form must reproduce the above copyright notice,
  17  *   this list of conditions and the following disclaimer in the documentation
  18  *   and/or other materials provided with the distribution.
  19  * - Neither the name of the MontaVista Software, Inc. nor the names of its
  20  *   contributors may be used to endorse or promote products derived from this
  21  *   software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  33  * THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #include <config.h>
  37
  38 #include "timer.h"
  39 #include "main.h"
  40 #include <qb/qbdefs.h>
  41 #include <qb/qbutil.h>
  42
  43 int corosync_timer_add_absolute (
  44                 unsigned long long nanosec_from_epoch,
  45                 void *data,
  46                 void (*timer_fn) (void *data),
  47                 corosync_timer_handle_t *handle)
  48 {
  49         uint64_t expire_time = nanosec_from_epoch - qb_util_nano_current_get();
  50         return qb_loop_timer_add(cs_poll_handle_get(),
  51                                 QB_LOOP_MED,
  52                                  expire_time,
  53                                  data,
  54                                  timer_fn,
  55                                  handle);
  56 }
  57
  58 int corosync_timer_add_duration (
  59         unsigned long long nanosec_duration,
  60         void *data,
  61         void (*timer_fn) (void *data),
  62         corosync_timer_handle_t *handle)
  63 {
  64         return qb_loop_timer_add(cs_poll_handle_get(),
  65                                 QB_LOOP_MED,
  66                                  nanosec_duration,
  67                                  data,
  68                                  timer_fn,
  69                                  handle);
  70 }
  71
  72 void corosync_timer_delete (
  73         corosync_timer_handle_t th)
  74 {
  75         qb_loop_timer_del(cs_poll_handle_get(), th);
  76 }
  77
  78 unsigned long long corosync_timer_expire_time_get (
  79         corosync_timer_handle_t th)
  80 {
  81         uint64_t expire;
  82
  83         if (th == 0) {
  84                 return (0);
  85         }
  86
  87         expire = qb_loop_timer_expire_time_get(cs_poll_handle_get(), th);
  88
  89         return (expire);
  90 }
  91
  92 unsigned long long cs_timer_time_get (void)
  93 {
  94         return qb_util_nano_from_epoch_get();
  95 }
  96