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RelativeTime tidying

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This commit is contained in:
Vinnie Falco
2013-10-20 15:31:50 -07:00
parent 74d616ac78
commit 29c38ef0d4
1 changed files with 35 additions and 39 deletions
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74
beast/chrono/impl/RelativeTime.cpp
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@@ -265,60 +265,56 @@ namespace detail {
#include <windows.h>
double monotonicCurrentTimeInSeconds()
static double monotonicCurrentTimeInSeconds()
{
return (uint32) GetTickCount64() / 1000.0;
return GetTickCount64() / 1000.0;
}
#elif BEAST_MAC || BEAST_IOS
#include <time.h>
static double timebaseRatio()
static double monotonicCurrentTimeInSeconds()
{
struct TimebaseRatio
struct StaticInitializer
{
TimebaseRatio ()
StaticInitializer ()
{
uint64 numerator;
double numerator;
double denominator;
mach_timebase_info_data_t timebase;
(void) mach_timebase_info (&timebase);
if (timebase.numer % 1000000 == 0)
{
numerator = timebase.numer / 1000000;
numerator = timebase.numer / 1000000.0;
denominator = timebase.denom * 1000.0;
}
else
{
numerator = timebase.numer;
denominator = timebase.denom * (uint64) 1000000 * 1000.0;
// VFALCO NOTE I don't understand this code
//denominator = timebase.denom * (uint64) 1000000 * 1000.0;
denominator = timebase.denom * 1000000000.0;
}
ratio = numerator / denominator;
}
double ratio;
};
static TimebaseRatio timebaseRatio;
return timebaseRatio.ratio;
static StaticInitializer const data;
return mach_absolute_time() * data.ratio;
}
double monotonicCurrentTimeInSeconds()
{
return mach_absolute_time() * timebaseRatio();
}
#else
#include <time.h>
double monotonicCurrentTimeInSeconds()
static double monotonicCurrentTimeInSeconds()
{
timespec t;
clock_gettime (CLOCK_MONOTONIC, &t);
@@ -327,32 +323,31 @@ double monotonicCurrentTimeInSeconds()
#endif
// Converts milliseconds to a RelativeTme
static RelativeTime toRelativeTime (uint32 ms)
{
return RelativeTime (ms / 1000.0);
}
// Records and returns the time from process startup
static RelativeTime getStartupTime()
static double getStartupTime()
{
struct StartupTime
struct StaticInitializer
{
StartupTime ()
{ s = toRelativeTime (detail::monotonicCurrentTimeInSeconds()); }
RelativeTime s;
StaticInitializer ()
{
when = detail::monotonicCurrentTimeInSeconds();
}
double when;
};
static StartupTime startupTime;
return startupTime.s;
static StaticInitializer const data;
return data.when;
}
// Used to call getStartupTime as early as possible
struct StartupTimeStaticInitializer
{
StartupTimeStaticInitializer ()
{ getStartupTime(); }
{
getStartupTime();
}
};
static StartupTimeStaticInitializer startupTimeStaticInitializer;
@@ -361,7 +356,8 @@ static StartupTimeStaticInitializer startupTimeStaticInitializer;
RelativeTime RelativeTime::fromStartup ()
{
return detail::toRelativeTime (detail::monotonicCurrentTimeInSeconds()) - detail::getStartupTime();
return RelativeTime (
detail::monotonicCurrentTimeInSeconds() - detail::getStartupTime());
}
}