senf/Scheduler/ClockService.cci

   1 // $Id$
   2 //
   3 // Copyright (C) 2007
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 //
   6 // The contents of this file are subject to the Fraunhofer FOKUS Public License
   7 // Version 1.0 (the "License"); you may not use this file except in compliance
   8 // with the License. You may obtain a copy of the License at
   9 // http://senf.berlios.de/license.html
  10 //
  11 // The Fraunhofer FOKUS Public License Version 1.0 is based on,
  12 // but modifies the Mozilla Public License Version 1.1.
  13 // See the full license text for the amendments.
  14 //
  15 // Software distributed under the License is distributed on an "AS IS" basis,
  16 // WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  17 // for the specific language governing rights and limitations under the License.
  18 //
  19 // The Original Code is Fraunhofer FOKUS code.
  20 //
  21 // The Initial Developer of the Original Code is Fraunhofer-Gesellschaft e.V.
  22 // (registered association), Hansastraße 27 c, 80686 Munich, Germany.
  23 // All Rights Reserved.
  24 //
  25 // Contributor(s):
  26 //   Stefan Bund <g0dil@berlios.de>
  27
  28 /** \file
  29     \brief ClockService inline non-template implementation */
  30
  31 // Custom includes
  32 #include <time.h>
  33 #include <boost/date_time/posix_time/posix_time_types.hpp>
  34 #include <senf/Utils/Exception.hh>
  35 #include <senf/Utils/ClockTypeMacros.hh>
  36
  37 #define prefix_ inline
  38 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  39
  40 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  41 // senf::ClockService
  42
  43 prefix_ senf::ClockService::clock_type senf::ClockService::now()
  44 {
  45     struct timespec spec;
  46     if (clock_gettime(CLOCK_MONOTONIC, &spec) < 0)
  47         SENF_THROW_SYSTEM_EXCEPTION("clock_gettime()");
  48     return SENF_INT2CLOCKTYPE(spec.tv_sec * 1000000000LL + spec.tv_nsec);
  49 }
  50
  51 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  52 // private members
  53
  54 namespace senf { namespace scheduler { ClockService::clock_type now(); } }
  55
  56 prefix_ senf::ClockService::clock_type senf::ClockService::clock_m(abstime_type time)
  57 {
  58     if (scheduler::now() - baseClock_ > clock_type(1000000000ll))
  59         restart_m();
  60     boost::posix_time::time_duration delta (time - baseAbstime_);
  61     return baseClock_ + clock_type( delta.ticks() )
  62         * clock_type( 1000000000UL / boost::posix_time::time_duration::ticks_per_second() );
  63 }
  64
  65 prefix_ senf::ClockService::abstime_type senf::ClockService::abstime_m(clock_type clock)
  66 {
  67     if (clock == 0)
  68         return abstime_type();
  69     if (scheduler::now() - baseClock_ > clock_type(1000000000ll))
  70         restart_m();
  71 #ifdef BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
  72     return baseAbstime_ + boost::posix_time::nanoseconds(clock-baseClock_);
  73 #else
  74     return baseAbstime_ + boost::posix_time::microseconds((clock.value() - baseClock_.value() + 500 )/1000);
  75 #endif
  76 }
  77
  78 prefix_ senf::ClockService::ClockService()
  79 {
  80     restart_m();
  81 }
  82
  83 prefix_ void senf::ClockService::restart_m()
  84 {
  85     baseAbstime_ = boost::posix_time::microsec_clock::universal_time();
  86     baseClock_ = now();
  87 }
  88
  89 // public members
  90
  91 prefix_ senf::ClockService::abstime_type senf::ClockService::abstime(clock_type clock)
  92 {
  93     return instance().abstime_m(clock);
  94 }
  95
  96 prefix_ senf::ClockService::reltime_type senf::ClockService::reltime(clock_type clock)
  97 {
  98 #ifdef BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
  99     return boost::posix_time::nanoseconds(clock);
 100 #else
 101     return  boost::posix_time::microseconds((clock.value() + 500)/1000);
 102 #endif
 103 }
 104
 105 prefix_ senf::ClockService::clock_type senf::ClockService::clock(abstime_type time)
 106 {
 107     return instance().clock_m(time);
 108 }
 109
 110 prefix_ senf::ClockService::clock_type senf::ClockService::from_time_t(time_t const & time)
 111 {
 112     return clock( boost::posix_time::from_time_t(time) );
 113 }
 114
 115 prefix_ senf::ClockService::clock_type senf::ClockService::nanoseconds(int64_type v)
 116 {
 117     return SENF_INT2CLOCKTYPE(v);
 118 }
 119
 120 prefix_ senf::ClockService::clock_type senf::ClockService::microseconds(int64_type v)
 121 {
 122     return SENF_INT2CLOCKTYPE(v * SENF_CLOCKTYPEVAL(nanoseconds(1000)));
 123 }
 124
 125 prefix_ senf::ClockService::clock_type senf::ClockService::milliseconds(int64_type v)
 126 {
 127     return SENF_INT2CLOCKTYPE(v * SENF_CLOCKTYPEVAL(microseconds(1000)));
 128 }
 129
 130 prefix_ senf::ClockService::clock_type senf::ClockService::seconds(int64_type v)
 131 {
 132     return SENF_INT2CLOCKTYPE(v * SENF_CLOCKTYPEVAL(milliseconds(1000)));
 133 }
 134
 135 prefix_ senf::ClockService::clock_type senf::ClockService::minutes(int64_type v)
 136 {
 137     return SENF_INT2CLOCKTYPE(v * SENF_CLOCKTYPEVAL(seconds(60)));
 138 }
 139
 140 prefix_ senf::ClockService::clock_type senf::ClockService::hours(int64_type v)
 141 {
 142     return SENF_INT2CLOCKTYPE(v * SENF_CLOCKTYPEVAL(minutes(60)));
 143 }
 144
 145 prefix_ senf::ClockService::clock_type senf::ClockService::days(int64_type v)
 146 {
 147     return SENF_INT2CLOCKTYPE(v * SENF_CLOCKTYPEVAL(hours(24)));
 148 }
 149
 150 prefix_ senf::ClockService::int64_type senf::ClockService::in_nanoseconds(clock_type v)
 151 {
 152     return SENF_CLOCKTYPEVAL(v);
 153 }
 154
 155 prefix_ senf::ClockService::int64_type senf::ClockService::in_microseconds(clock_type v)
 156 {
 157     return (SENF_CLOCKTYPEVAL(v) / SENF_CLOCKTYPEVAL(nanoseconds(1000)));
 158 }
 159
 160 prefix_ senf::ClockService::int64_type senf::ClockService::in_milliseconds(clock_type v)
 161 {
 162     return (SENF_CLOCKTYPEVAL(v) / SENF_CLOCKTYPEVAL(microseconds(1000)));
 163 }
 164
 165 prefix_ senf::ClockService::int64_type senf::ClockService::in_seconds(clock_type v)
 166 {
 167     return (SENF_CLOCKTYPEVAL(v) / SENF_CLOCKTYPEVAL(milliseconds(1000)));
 168 }
 169
 170 prefix_ senf::ClockService::int64_type senf::ClockService::in_minutes(clock_type v)
 171 {
 172     return (SENF_CLOCKTYPEVAL(v) / SENF_CLOCKTYPEVAL(seconds(60)));
 173 }
 174
 175 prefix_ senf::ClockService::int64_type senf::ClockService::in_hours(clock_type v)
 176 {
 177     return (SENF_CLOCKTYPEVAL(v) / SENF_CLOCKTYPEVAL(minutes(60))) ;
 178 }
 179
 180 prefix_ senf::ClockService::int64_type senf::ClockService::in_days(clock_type v)
 181 {
 182     return (SENF_CLOCKTYPEVAL(v) / SENF_CLOCKTYPEVAL(hours(24))) ;
 183 }
 184
 185 prefix_ senf::ClockService::clock_type senf::ClockService::from_timeval(timeval const & time)
 186 {
 187     return from_time_t(time.tv_sec) + microseconds(time.tv_usec);
 188 }
 189
 190 prefix_ void senf::ClockService::restart()
 191 {
 192     instance().restart_m();
 193 }
 194
 195 //-/////////////////////////////////////////////////////////////////////////////////////////////////
 196 #undef prefix_
 197
 198 \f
 199 // Local Variables:
 200 // mode: c++
 201 // fill-column: 100
 202 // comment-column: 40
 203 // c-file-style: "senf"
 204 // indent-tabs-mode: nil
 205 // ispell-local-dictionary: "american"
 206 // compile-command: "scons -u test"
 207 // End: