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#include "pch.h"
#include "vcpkg_Chrono.h"
#include "vcpkg_Checks.h"
namespace vcpkg
{
static std::string format_time_userfriendly(const std::chrono::nanoseconds& nanos)
{
using std::chrono::hours;
using std::chrono::minutes;
using std::chrono::seconds;
using std::chrono::milliseconds;
using std::chrono::microseconds;
using std::chrono::nanoseconds;
using std::chrono::duration_cast;
const double nanos_as_double = static_cast<double>(nanos.count());
if (duration_cast<hours>(nanos) > hours())
{
auto t = nanos_as_double / duration_cast<nanoseconds>(hours(1)).count();
return Strings::format("%.4g h", t);
}
if (duration_cast<minutes>(nanos) > minutes())
{
auto t = nanos_as_double / duration_cast<nanoseconds>(minutes(1)).count();
return Strings::format("%.4g min", t);
}
if (duration_cast<seconds>(nanos) > seconds())
{
auto t = nanos_as_double / duration_cast<nanoseconds>(seconds(1)).count();
return Strings::format("%.4g s", t);
}
if (duration_cast<milliseconds>(nanos) > milliseconds())
{
auto t = nanos_as_double / duration_cast<nanoseconds>(milliseconds(1)).count();
return Strings::format("%.4g ms", t);
}
if (duration_cast<microseconds>(nanos) > microseconds())
{
auto t = nanos_as_double / duration_cast<nanoseconds>(microseconds(1)).count();
return Strings::format("%.4g us", t);
}
return Strings::format("%.4g ns", nanos_as_double);
}
ElapsedTime ElapsedTime::createStarted()
{
ElapsedTime t;
t.m_startTick = std::chrono::high_resolution_clock::now();
return t;
}
std::string ElapsedTime::toString() const
{
return format_time_userfriendly(elapsed<std::chrono::nanoseconds>());
}
Stopwatch Stopwatch::createUnstarted()
{
return Stopwatch();
}
Stopwatch Stopwatch::createStarted()
{
return Stopwatch().start();
}
bool Stopwatch::isRunning() const
{
return this->m_isRunning;
}
const Stopwatch& Stopwatch::start()
{
Checks::check_exit(!this->m_isRunning, "This stopwatch is already running.");
this->m_isRunning = true;
this->m_startTick = std::chrono::high_resolution_clock::now();
return *this;
}
const Stopwatch& Stopwatch::stop()
{
auto tick = std::chrono::high_resolution_clock::now();
Checks::check_exit(this->m_isRunning, "This stopwatch is already stopped.");
this->m_isRunning = false;
this->m_elapsedNanos += tick - this->m_startTick;
return *this;
}
Stopwatch& Stopwatch::reset()
{
this->m_elapsedNanos = std::chrono::nanoseconds();
this->m_isRunning = false;
return *this;
}
std::string Stopwatch::toString() const
{
return format_time_userfriendly(this->elapsedNanos());
}
Stopwatch::Stopwatch() : m_isRunning(false), m_elapsedNanos(0), m_startTick() { }
std::chrono::nanoseconds Stopwatch::elapsedNanos() const
{
if (this->m_isRunning)
{
return std::chrono::high_resolution_clock::now() - this->m_startTick + this->m_elapsedNanos;
}
return this->m_elapsedNanos;
}
}
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