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// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <util/stopwatch_impl.h>
#include <iomanip>
#include <sstream>
namespace isc {
namespace util {
using namespace boost::posix_time;
StopwatchImpl::StopwatchImpl()
: started_(false),
last_start_(getCurrentTime()),
last_stop_(last_start_),
cumulative_time_(microseconds(0)) {
}
StopwatchImpl::~StopwatchImpl() {
}
void
StopwatchImpl::start() {
// If stopwatch is "stopped", start it.
if (!started_) {
last_start_ = getCurrentTime();
started_ = true;
}
}
void
StopwatchImpl::stop() {
// Is stopwatch is "started", stop it.
if (started_) {
last_stop_ = getCurrentTime();
// Update the total time with the last measured duration.
cumulative_time_ += last_stop_ - last_start_;
started_ = false;
}
}
void
StopwatchImpl::reset() {
// Set last start and stop values to the current time. This is the
// same as in the constructor. As a result the last duration will
// be 0.
last_start_ = getCurrentTime();
last_stop_ = last_start_;
// Set the total duration to 0.
cumulative_time_ = microseconds(0);
started_ = false;
}
time_duration
StopwatchImpl::getLastDuration() const {
// If the stopwatch is started, the time measured is between the
// start time and the current time. Otherwise, it is between the
// start time and last stop.
ptime end_time = started_ ? getCurrentTime() : last_stop_;
return (end_time - last_start_);
}
time_duration
StopwatchImpl::getTotalDuration() const {
// Get the total time recorded so far.
time_duration total_duration = cumulative_time_;
if (started_) {
// If the stopwatch is started, add the duration between the
// start time and current time.
total_duration += (getCurrentTime() - last_start_);
}
return (total_duration);
}
std::string
StopwatchImpl::logFormat(const boost::posix_time::time_duration& duration) {
std::ostringstream s;
s << duration.total_milliseconds() << ".";
s << std::setfill('0') << std::setw(3) << (duration.total_microseconds() % 1000)
<< " ms";
return (s.str());
}
ptime
StopwatchImpl::getCurrentTime() const {
return (microsec_clock::universal_time());
}
} // end of isc::util
} // end of isc
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