1 files changed, 97 insertions, 0 deletions
diff --git a/src/lib/util/stopwatch_impl.cc b/src/lib/util/stopwatch_impl.cc
new file mode 100644
index 0000000..8f6bc65
--- /dev/null
+++ b/src/lib/util/stopwatch_impl.cc
@@ -0,0 +1,97 @@
+// 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