Files
allwpilib/wpilibc/src/main/native/cpp/Tracer.cpp
Peter Johnson b2c3b2dd8e Use std::string_view and fmtlib across all libraries (#3402)
- Twine, StringRef, Format, and NativeFormatting have been removed
- Logging now uses fmtlib style formatting
- Nearly all uses of wpi::outs/errs have been replaced with fmt::print() or
std::puts()/std::fputs() (for unformatted strings).
- A wpi/fmt/raw_ostream.h header has been added to enable
fmt::print() with wpi::raw_ostream
2021-06-06 16:13:58 -07:00

57 lines
1.3 KiB
C++

// Copyright (c) FIRST and other WPILib contributors.
// Open Source Software; you can modify and/or share it under the terms of
// the WPILib BSD license file in the root directory of this project.
#include "frc/Tracer.h"
#include <fmt/format.h>
#include <wpi/SmallString.h>
#include <wpi/raw_ostream.h>
#include "frc/Errors.h"
using namespace frc;
Tracer::Tracer() {
ResetTimer();
}
void Tracer::ResetTimer() {
m_startTime = hal::fpga_clock::now();
}
void Tracer::ClearEpochs() {
ResetTimer();
m_epochs.clear();
}
void Tracer::AddEpoch(std::string_view epochName) {
auto currentTime = hal::fpga_clock::now();
m_epochs[epochName] = currentTime - m_startTime;
m_startTime = currentTime;
}
void Tracer::PrintEpochs() {
wpi::SmallString<128> buf;
wpi::raw_svector_ostream os(buf);
PrintEpochs(os);
if (!buf.empty()) {
FRC_ReportError(warn::Warning, "{}", buf.c_str());
}
}
void Tracer::PrintEpochs(wpi::raw_ostream& os) {
using std::chrono::duration_cast;
using std::chrono::microseconds;
auto now = hal::fpga_clock::now();
if (now - m_lastEpochsPrintTime > kMinPrintPeriod) {
m_lastEpochsPrintTime = now;
for (const auto& epoch : m_epochs) {
os << fmt::format(
"\t{}: {:.6f}s\n", epoch.getKey(),
duration_cast<microseconds>(epoch.getValue()).count() / 1.0e6);
}
}
}