/srv/osrm/osrm-backend/include/util
Edit: /srv/osrm/osrm-backend/include/util/timed_histogram.hpp (2576B)
#ifndef OSRM_UTIL_TIMED_HISTOGRAM_HPP
#define OSRM_UTIL_TIMED_HISTOGRAM_HPP
#include "util/integer_range.hpp"
#include
#include
#include
#include
#include
namespace osrm::util
{
namespace detail
{
extern std::atomic_uint operation;
} // namespace detail
/**
* Captures a histogram with a bin size of `IndexBinSize` every `TimeBinSize` count operations.
*/
template class TimedHistogram
{
public:
void Count(std::size_t pos)
{
std::lock_guard guard(frames_lock);
auto frame_index = detail::operation++ / TimeBinSize;
while (frame_offsets.size() <= frame_index)
{
frame_offsets.push_back(frame_counters.size());
}
BOOST_ASSERT(frame_offsets.size() == frame_index + 1);
auto frame_offset = frame_offsets.back();
auto counter_index = frame_offset + pos / IndexBinSize;
while (counter_index >= frame_counters.size())
{
frame_counters.push_back(0);
}
BOOST_ASSERT(frame_counters.size() > counter_index);
frame_counters[counter_index]++;
}
// Returns the measurments as a CSV file with the columns:
// frame_id,index_bin,count
std::string DumpCSV() const
{
std::stringstream out;
const auto print_bins = [&out](auto frame_index, auto begin, auto end) {
auto bin_index = 0;
std::for_each(begin, end, [&](const auto count) {
if (count > 0)
{
out << (frame_index * TimeBinSize) << "," << (bin_index * IndexBinSize) << ","
<< count << std::endl;
}
bin_index++;
});
};
if (frame_offsets.size() == 0)
{
return "";
}
for (const auto frame_index : irange(0, frame_offsets.size() - 1))
{
auto begin = frame_counters.begin() + frame_offsets[frame_index];
auto end = frame_counters.begin() + frame_offsets[frame_index + 1];
print_bins(frame_index, begin, end);
}
print_bins(frame_offsets.size() - 1,
frame_counters.begin() + frame_offsets.back(),
frame_counters.end());
return out.str();
}
private:
std::mutex frames_lock;
std::vector frame_offsets;
std::vector frame_counters;
};
} // namespace osrm::util
#endif