X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=Scheduler%2FClockService.cci;h=791a403f63c5e2e9d6decae715abfbd2abcc58f2;hb=81f84badf27b66dbadec9890646ca1193e998505;hp=48f989d99c2a43e0aa5bb7bdfbcd3219696c1588;hpb=3d16600678b948ff3bd0e4fd2a1a800fcc629a03;p=senf.git

diff --git a/Scheduler/ClockService.cci b/Scheduler/ClockService.cci
index 48f989d..791a403 100644
--- a/Scheduler/ClockService.cci
+++ b/Scheduler/ClockService.cci
@@ -1,8 +1,8 @@
 // $Id$
 //
-// Copyright (C) 2007 
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
+// Copyright (C) 2007
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
 //     Stefan Bund <g0dil@berlios.de>
 //
 // This program is free software; you can redistribute it and/or modify
@@ -24,7 +24,9 @@
     \brief ClockService inline non-template implementation */
 
 // Custom includes
-#include "boost/date_time/posix_time/posix_time_types.hpp"
+#include <time.h>
+#include <boost/date_time/posix_time/posix_time_types.hpp>
+#include "../Utils/Exception.hh"
 
 #define prefix_ inline
 ///////////////////////////////cci.p///////////////////////////////////////
@@ -34,95 +36,150 @@
 
 prefix_ senf::ClockService::clock_type senf::ClockService::now()
 {
-    // We must make sure to call instance() before fetching the current time since the first call to
-    // instance() will construct the singleton and initialize heartbeat_. If this happens *after*
-    // fetching the current time checkSkew() will detect clock skew since heartbeat_ will be <
-    // current time.
-    return instance().now_i();
+    struct timespec spec;
+    if (clock_gettime(CLOCK_MONOTONIC, &spec) < 0)
+        SENF_THROW_SYSTEM_EXCEPTION("clock_gettime()");
+    return spec.tv_sec * 1000000000LL + spec.tv_nsec;
 }
 
+////////////////////////////////////////
+// private members
+
+prefix_ senf::ClockService::clock_type senf::ClockService::clock_m(abstime_type time)
+{
+    if (now() - baseClock_ > 1000000000ll)
+        restart_m();
+    boost::posix_time::time_duration delta (time - baseAbstime_);
+    return baseClock_ + clock_type( delta.ticks() )
+        * clock_type( 1000000000UL / boost::posix_time::time_duration::ticks_per_second() );
+}
+
+prefix_ senf::ClockService::abstime_type senf::ClockService::abstime_m(clock_type clock)
+{
+    if (now() - baseClock_ > 1000000000ll)
+        restart_m();
+#ifdef BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
+    return baseAbstime_ + boost::posix_time::nanoseconds(clock-baseClock_);
+#else
+    return baseAbstime_ + boost::posix_time::microseconds((clock-baseClock_+500)/1000);
+#endif
+}
+
+prefix_ senf::ClockService::ClockService()
+{
+    restart_m();
+}
+
+prefix_ void senf::ClockService::restart_m()
+{
+    baseAbstime_ = boost::posix_time::microsec_clock::universal_time();
+    baseClock_ = now();
+}
+
+// public members
+
 prefix_ senf::ClockService::abstime_type senf::ClockService::abstime(clock_type clock)
 {
+    return instance().abstime_m(clock);
+}
+
+prefix_ senf::ClockService::reltime_type senf::ClockService::reltime(clock_type clock)
+{
 #ifdef BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
-    return instance().base_ + boost::posix_time::nanoseconds(clock);
+    return boost::posix_time::nanoseconds(clock);
 #else
-    return instance().base_ + boost::posix_time::microseconds((clock+500)/1000);
+    return  boost::posix_time::microseconds((clock+500)/1000);
 #endif
 }
 
 prefix_ senf::ClockService::clock_type senf::ClockService::clock(abstime_type time)
 {
-    boost::posix_time::time_duration delta (time - instance().base_);
-    return clock_type( delta.ticks() )
-        * clock_type( 1000000000UL / boost::posix_time::time_duration::ticks_per_second() );
+    return instance().clock_m(time);
+}
+
+prefix_ senf::ClockService::clock_type senf::ClockService::from_time_t(time_t const & time)
+{
+    return clock( boost::posix_time::from_time_t(time) );
 }
 
-prefix_ senf::ClockService::clock_type senf::ClockService::nanoseconds(clock_type v)
+prefix_ senf::ClockService::clock_type senf::ClockService::nanoseconds(int64_type v)
 {
     return v;
 }
 
-prefix_ senf::ClockService::clock_type senf::ClockService::microseconds(clock_type v)
+prefix_ senf::ClockService::clock_type senf::ClockService::microseconds(int64_type v)
 {
-    return nanoseconds(1000*v);
+    return v * nanoseconds(1000);
 }
 
-prefix_ senf::ClockService::clock_type senf::ClockService::milliseconds(clock_type v)
+prefix_ senf::ClockService::clock_type senf::ClockService::milliseconds(int64_type v)
 {
-    return microseconds(1000*v);
+    return v * microseconds(1000);
 }
 
-prefix_ senf::ClockService::clock_type senf::ClockService::seconds(clock_type v)
+prefix_ senf::ClockService::clock_type senf::ClockService::seconds(int64_type v)
 {
-    return milliseconds(1000*v);
+    return v * milliseconds(1000);
 }
 
-prefix_ senf::ClockService::clock_type senf::ClockService::minutes(clock_type v)
+prefix_ senf::ClockService::clock_type senf::ClockService::minutes(int64_type v)
 {
-    return seconds(60*v);
+    return v * seconds(60);
 }
 
-prefix_ senf::ClockService::clock_type senf::ClockService::hours(clock_type v)
+prefix_ senf::ClockService::clock_type senf::ClockService::hours(int64_type v)
 {
-    return minutes(60*v);
+    return v * minutes(60);
 }
 
-prefix_ senf::ClockService::clock_type senf::ClockService::days(clock_type v)
+prefix_ senf::ClockService::clock_type senf::ClockService::days(int64_type v)
 {
-    return hours(24*v);
+    return v * hours(24);
 }
 
-prefix_ void senf::ClockService::restart()
+prefix_ senf::ClockService::clock_type senf::ClockService::in_nanoseconds(int64_type v)
 {
-    instance().restart_i();
+    return v;
 }
 
-////////////////////////////////////////
-// private members
+prefix_ senf::ClockService::clock_type senf::ClockService::in_microseconds(int64_type v)
+{
+    return v / nanoseconds(1000);
+}
 
-prefix_ senf::ClockService & senf::ClockService::instance()
+prefix_ senf::ClockService::clock_type senf::ClockService::in_milliseconds(int64_type v)
 {
-    static ClockService instance;
-    return instance;
+    return v / microseconds(1000);
 }
 
-prefix_ senf::ClockService::clock_type senf::ClockService::now_i()
+prefix_ senf::ClockService::clock_type senf::ClockService::in_seconds(int64_type v)
 {
-    boost::posix_time::ptime time (boost::posix_time::microsec_clock::universal_time());
-    if (checkSkew(time)) 
-        updateSkew(time);
-    return clock(time);
+    return v / milliseconds(1000);
 }
 
-prefix_ bool senf::ClockService::checkSkew(boost::posix_time::ptime time)
+prefix_ senf::ClockService::clock_type senf::ClockService::in_minutes(int64_type v)
 {
-    return time < heartbeat_ || (time - heartbeat_) > boost::posix_time::seconds(2*CheckInterval);
+    return v / seconds(60);
 }
 
-prefix_ void senf::ClockService::clockSkew(boost::posix_time::ptime time,
-                                           boost::posix_time::ptime expected)
+prefix_ senf::ClockService::clock_type senf::ClockService::in_hours(int64_type v)
+{
+    return v / minutes(60);
+}
+
+prefix_ senf::ClockService::clock_type senf::ClockService::in_days(int64_type v)
+{
+    return v / hours(24);
+}
+
+prefix_ senf::ClockService::clock_type senf::ClockService::from_timeval(timeval const & time)
+{
+    return from_time_t(time.tv_sec) + ClockService::microseconds(time.tv_usec);
+}
+
+prefix_ void senf::ClockService::restart()
 {
-    base_ += (time - expected);
+    instance().restart_m();
 }
 
 ///////////////////////////////cci.e///////////////////////////////////////