git.m6w6.name Git - awesomized/libmemcached/blob - libtest/alarm.cc

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Data Differential YATL (i.e. libtest)  library
   4  *
   5  *  Copyright (C) 2012 Data Differential, http://datadifferential.com/
   6  *
   7  *  Redistribution and use in source and binary forms, with or without
   8  *  modification, are permitted provided that the following conditions are
   9  *  met:
  10  *
  11  *      * Redistributions of source code must retain the above copyright
  12  *  notice, this list of conditions and the following disclaimer.
  13  *
  14  *      * Redistributions in binary form must reproduce the above
  15  *  copyright notice, this list of conditions and the following disclaimer
  16  *  in the documentation and/or other materials provided with the
  17  *  distribution.
  18  *
  19  *      * The names of its contributors may not be used to endorse or
  20  *  promote products derived from this software without specific prior
  21  *  written permission.
  22  *
  23  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  26  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  29  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  30  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  31  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  32  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  33  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  *
  35  */
  36
  37 #include "libtest/yatlcon.h"
  38
  39 #include <libtest/common.h>
  40
  41 #include <sys/time.h>
  42 #include <cstdlib>
  43
  44 namespace libtest {
  45
  46 static const struct timeval default_it_value= { 600, 0 };
  47 static const struct timeval default_it_interval= { 0, 0 };
  48 static const struct itimerval defualt_timer= { default_it_interval, default_it_value };
  49
  50 static const struct itimerval cancel_timer= { default_it_interval, default_it_interval };
  51
  52
  53 void set_alarm()
  54 {
  55   if (setitimer(ITIMER_VIRTUAL, &defualt_timer, NULL) == -1)
  56   {
  57     Error << "setitimer() failed";
  58   }
  59 }
  60
  61 void set_alarm(long tv_sec, long tv_usec)
  62 {
  63   // For the moment use any value to YATL_ALARM to cancel alarming.
  64   if (getenv("YATL_ALARM"))
  65   {
  66     errno= 0;
  67     tv_sec= strtol(getenv("YATL_ALARM"), (char **) NULL, 10);
  68
  69     if (errno != 0)
  70     {
  71       FATAL("Bad value for YATL_ALARM");
  72     }
  73     else if (tv_sec == 0)
  74     {
  75       cancel_alarm();
  76     }
  77   }
  78
  79 #if defined(TARGET_OS_OSX) && TARGET_OS_OSX
  80   struct timeval it_value= { time_t(tv_sec), suseconds_t(tv_usec) };
  81 #else
  82   struct timeval it_value= { tv_sec, tv_usec };
  83 #endif
  84
  85   struct itimerval timer= { default_it_interval, it_value };
  86
  87   if (setitimer(ITIMER_VIRTUAL, &timer, NULL) == -1)
  88   {
  89     Error << "setitimer() failed";
  90   }
  91 }
  92
  93 void cancel_alarm()
  94 {
  95   if (setitimer(ITIMER_VIRTUAL, &cancel_timer, NULL) == -1)
  96   {
  97     Error << "setitimer() failed";
  98   }
  99 }
 100
 101 } // namespace libtest
 102