91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
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#include "externals.hh"
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#include "utilities.hh"
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#include "profiling.hh"
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#include <sys/time.h>
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#include <time.h>
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T_Profiler T_Profiler::Profiler;
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void T_Profiler::clear( )
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{
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sections_.clear( );
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samples_.clear( );
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starts_.clear( );
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}
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void T_Profiler::startFrame( )
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{
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}
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void T_Profiler::start(
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__rd__ std::string const& section )
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{
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const auto n( sections_.size( ) );
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const auto pos( find( section ) );
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if ( pos == n ) {
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sections_.push_back( section );
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samples_.push_back( T_SamplesList_{ } );
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starts_.push_back( 0u );
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}
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struct timespec ts;
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clock_gettime( CLOCK_MONOTONIC , &ts );
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starts_[ pos ] = ts.tv_sec * 1000000000 + ts.tv_nsec;
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}
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void T_Profiler::end(
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__rd__ std::string const& section )
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{
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const auto pos( find( section ) );
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const auto n( sections_.size( ) );
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if ( pos == n ) {
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return;
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}
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struct timespec ts;
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clock_gettime( CLOCK_MONOTONIC , &ts );
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const uint64_t ended = ts.tv_sec * 1000000000 + ts.tv_nsec;
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const uint64_t duration = ended - starts_[ pos ];
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auto& samples( samples_[ pos ] );
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if ( samples.size( ) == 0 || ( samples.size( ) < History
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&& samples[ 0 ].nSamples == Samples ) ) {
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samples.insert( samples.begin( ) , T_ProfilerSamples{ 0 , 0 } );
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} else if ( samples.size( ) == History && samples[ 0 ].nSamples == Samples ) {
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for ( auto i = 1u ; i < History ; i ++ ) {
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samples[ i ] = samples[ i - 1 ];
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}
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samples[ 0 ].sum = 0;
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samples[ 0 ].nSamples = 0;
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}
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samples[ 0 ].sum += float( duration ) * 1e-6;
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samples[ 0 ].nSamples ++;
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}
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float T_Profiler::resultOf(
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__rd__ const uint32_t section ) const
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{
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auto const& samples( samples_[ section ] );
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float total = 0;
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float nSamples = 0;
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for ( auto const& entry : samples ) {
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total += entry.sum;
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nSamples += entry.nSamples;
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}
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return total / nSamples;
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}
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uint32_t T_Profiler::find(
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__rd__ std::string const& section ) const
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{
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const auto n( sections_.size( ) );
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auto pos( 0u );
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while ( pos < n && sections_[ pos ] != section ) {
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pos ++;
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}
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return pos;
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}
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