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optimize: Add GetTimeSinceStartFast() that caches the time for archs where GetMicrosecondsSinceStart() is slow

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This commit is contained in:
Chris Danford
2005-03-21 21:40:07 +00:00
parent ea59bbfec8
commit 66a30e72b8
14 changed files with 41 additions and 36 deletions
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stepmania/src/RageTimer.cpp
+10 -6
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@@ -30,24 +30,28 @@
const RageTimer RageZeroTimer(0,0);
static void GetTime( unsigned &secs, unsigned &us )
static void GetTime( unsigned &secs, unsigned &us, bool bAccurate )
{
uint64_t usecs = ArchHooks::GetMicrosecondsSinceStart( true );
// if !bAccurate, then don't call ArchHooks to find the current time. Just return the
// last calculated time. GetMicrosecondsSinceStart is slow on some archs.
static uint64_t usecs = 0;
if( bAccurate )
usecs = ArchHooks::GetMicrosecondsSinceStart( true );
secs = unsigned(usecs / 1000000);
us = unsigned(usecs % 1000000);
}
float RageTimer::GetTimeSinceStart()
float RageTimer::GetTimeSinceStart( bool bAccurate )
{
unsigned secs, us;
GetTime( secs, us );
return secs + us / 1000000.0f;
GetTime( secs, us, bAccurate );
return secs + (us / 1000000.0f);
}
void RageTimer::Touch()
{
GetTime( this->m_secs, this->m_us );
GetTime( this->m_secs, this->m_us, true );
}
float RageTimer::Ago() const