libkea_util_la_SOURCES += process_spawn.h process_spawn.cc
libkea_util_la_SOURCES += range_utilities.h
libkea_util_la_SOURCES += signal_set.cc signal_set.h
+libkea_util_la_SOURCES += stopwatch.cc stopwatch.h
+libkea_util_la_SOURCES += stopwatch_impl.cc stopwatch_impl.h
libkea_util_la_SOURCES += encode/base16_from_binary.h
libkea_util_la_SOURCES += encode/base32hex.h encode/base64.h
libkea_util_la_SOURCES += encode/base32hex_from_binary.h
--- /dev/null
+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#include <util/stopwatch.h>
+#include <util/stopwatch_impl.h>
+
+namespace isc {
+namespace util {
+
+using namespace boost::posix_time;
+
+Stopwatch::Stopwatch(const bool autostart)
+ : impl_(new StopwatchImpl()) {
+ // If the autostart has been specified, invoke start.
+ if (autostart) {
+ start();
+ }
+}
+
+void
+Stopwatch::start() {
+ impl_->start();
+}
+
+void
+Stopwatch::stop() {
+ impl_->stop();
+}
+
+void
+Stopwatch::reset() {
+ impl_->reset();
+}
+
+boost::posix_time::time_duration
+Stopwatch::getLastDuration() const {
+ return (impl_->getLastDuration());
+}
+
+boost::posix_time::time_duration
+Stopwatch::getTotalDuration() const {
+ return (impl_->getTotalDuration());
+}
+
+long
+Stopwatch::getMilliseconds() const {
+ return (getLastDuration().total_milliseconds());
+}
+
+long
+Stopwatch::getTotalMilliseconds() const {
+ return (getTotalDuration().total_milliseconds());
+}
+
+long
+Stopwatch::getMicroseconds() const {
+ return (getLastDuration().total_microseconds());
+}
+
+long
+Stopwatch::getTotalMicroseconds() const {
+ return (getTotalDuration().total_microseconds());
+}
+
+} // end of isc::util
+} // end of isc
--- /dev/null
+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#ifndef STOPWATCH_H
+#define STOPWATCH_H
+
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include <boost/scoped_ptr.hpp>
+
+namespace isc {
+namespace util {
+
+/// @brief Forward declaration to the @c Stopwatch implementation.
+class StopwatchImpl;
+
+/// @brief Utility class to measure code execution times.
+///
+/// The API of this class is based on the use cases of a stopwatch. It is
+/// used to measure time spent executing portions of the code. The typical
+/// use case for the @c Stopwatch is to measure the time spent invoking
+/// callouts in hooks library. This provides means for diagnosing the
+/// server's performance degradations when hooks libraries are in use.
+///
+/// This class exposes functions like @c start, @c stop and @c reset which
+/// behave in the same way as a stopwatch used to measure time for sport
+/// activities.
+///
+/// It is possible to measure the cumulative execution time by invoking
+/// @c start and @c stop consecutively. The total measured time will be
+/// a sum of durations between the invocations of respective starts and
+/// stops.
+class Stopwatch {
+public:
+
+ /// @brief Constructor.
+ ///
+ /// @param autostart Indicates if the stopwatch should be initialized to
+ /// the "started" state. In this state the stopwatch is measuring the time
+ /// since it has been started (object has been constructed in this case.
+ /// If the parameter is set to false (default value), the
+ /// @c Stopwatch::start must be called to start time measurement.
+ Stopwatch(const bool autostart = true);
+
+ /// @brief Starts the stopwatch.
+ ///
+ /// Sets the stopwatch to the "started" state. In this state the stopwatch
+ /// is measuring the duration since @c Stopwatch::start has been invoked.
+ ///
+ //// This method is no-op if the stopwatch is already in the "stopped"
+ /// state.
+ void start();
+
+ /// @brief Stops the stopwatch.
+ ///
+ /// Sets the stopwatch to the "stopped" state. The stopwatch stops the time
+ /// measurement and records the duration between the last stopwatch start
+ /// and the stop invocation. It also updates the total measured duration,
+ /// i.e. the sum of durations between all start/stop invocations. Both
+ /// values can be retrieved using @c Stopwatch::getLastDuration and
+ /// @c Stopwatch::getTotalDuration respectively, or their variants.
+ ///
+ /// This method is no-op if the stopwatch is already in the "stopped" state.
+ void stop();
+
+ /// @brief Resets the stopwatch.
+ ///
+ /// It resets the stopwatch to the initial state. In this state, the last
+ /// measured duration and the total duration is set to 0. The stopwatch
+ /// is set to the "stopped" state.
+ void reset();
+
+ /// @brief Retrieves last measured duration.
+ ///
+ /// If the stopwatch is in the "stopped" state this method retrieves the
+ /// duration between the last start and stop. If the stopwatch is in the
+ /// "started" state, the retrieved duration is the duration between the
+ /// last start of the stopwatch and the current time.
+ boost::posix_time::time_duration getLastDuration() const;
+
+ /// @brief Retrieves total measured duration.
+ ///
+ /// If the stopwatch is in the "stopped" state this method retrieves the
+ /// total duration between all starts and stops invoked during the
+ /// lifetime of the object or since the last reset. If the stopwatch is
+ /// in the "started" state, the returned is the sum of all durations
+ /// between respective starts and stops, and the duration since the
+ /// stopwatch has been last started and the current time.
+ boost::posix_time::time_duration getTotalDuration() const;
+
+ /// @brief Retrieves the last measured duration in milliseconds.
+ long getMilliseconds() const;
+
+ /// @brief Retrieves the total measured duration in milliseconds.
+ long getTotalMilliseconds() const;
+
+ /// @brief Retrieves the last measured duration in microseconds.
+ long getMicroseconds() const;
+
+ /// @brief Retrieves the total measured duration in microseconds.
+ long getTotalMicroseconds() const;
+
+private:
+
+ /// @brief Pointer to the @c StopwatchImpl.
+ boost::scoped_ptr<StopwatchImpl> impl_;
+
+};
+
+}
+}
+
+#endif // STOPWATCH_H
+
--- /dev/null
+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#include <util/stopwatch_impl.h>
+
+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);
+}
+
+ptime
+StopwatchImpl::getCurrentTime() const {
+ return (microsec_clock::universal_time());
+}
+
+
+} // end of isc::util
+} // end of isc
--- /dev/null
+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#ifndef STOPWATCH_IMPL_H
+#define STOPWATCH_IMPL_H
+
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include <boost/scoped_ptr.hpp>
+
+namespace isc {
+namespace util {
+
+/// @brief @c Stopwatch class implementation.
+///
+/// The @c Stopwatch class uses the plimpl idiom to make it easier to unit
+/// test behavior of the @c Stopwatch class without a need to rely on the system
+/// clock. The @c StopwatchImpl API allows for overriding the @c getCurrentTime
+/// method to return the arbitrary time value as current time to various
+/// methods. By setting the current time to arbitrary values the test can expect
+/// arbitrary values being returned by the class methods.
+///
+/// Also, by using the pimpl idiom the @c Stopwatch class hides its implementation
+/// details and leaves the header with only the pointer to the @c StopwatchImpl
+/// class.
+class StopwatchImpl {
+public:
+
+ /// @brief Constructor.
+ ///
+ /// Initializes the internally used timestamps. It also sets the state of
+ /// the stopwatch to "stopped".
+ StopwatchImpl();
+
+ /// @brief Virtual destructor.
+ ///
+ /// This destructor is virtual because the @c StopwatchImpl::getCurrentTime
+ /// is virtual.
+ virtual ~StopwatchImpl();
+
+ /// @brief Starts the stopwatch.
+ ///
+ /// Sets the stopwatch to the "started" state. It also records the time when
+ /// the stopwatch is started. This method is no-op if the stopwatch is
+ /// already in the "started" state.
+ ///
+ /// Also see the @c Stopwatch::start for details.
+ void start();
+
+ /// @brief Stop the stopwatch.
+ ///
+ /// Sets the stopwatch to the "stopped" state. The stop time is recorded and
+ /// the cumulative time is updated to include the duration between the most
+ /// recent start and stop. This method is no-op if the stopwatch is already
+ /// in the "stopped" state.
+ ///
+ /// Also see the @c Stopwatch::stop for details.
+ void stop();
+
+ /// @brief Reset the stopwatch.
+ ///
+ /// Also see the @c Stopwatch::reset for details.
+ void reset();
+
+ /// @brief Retrieves the measured duration.
+ ///
+ /// Also see the @c Stopwatch::getLastDuration for details.
+ boost::posix_time::time_duration getLastDuration() const;
+
+ /// @brief Retrieves the total measured duration.
+ ///
+ /// Also see the @c Stopwatch::getTotalDuration for details.
+ boost::posix_time::time_duration getTotalDuration() const;
+
+protected:
+
+ /// @brief Returns the current time.
+ ///
+ /// This method is used internally by the @c StopwatchImpl class and
+ /// its derivations. This class simply returns the value of
+ /// @c boost::posix_time::micrisec_clock::univeral_time(), which is
+ /// a current timestamp. The derivations may replace it with the
+ /// custom implementations. The typical use case is for the unit tests
+ /// to customize the behavior of this function to return well known
+ /// (deterministic) values. As a result, it is possible to influence
+ /// the "measured" values returned by accessors of this class, which
+ /// can be compared against some exact values.
+ virtual boost::posix_time::ptime getCurrentTime() const;
+
+private:
+
+ /// @brief Holds the state of the stopwatch.
+ bool started_;
+
+ /// @brief Holds the timestamp when the stopwatch has been last started.
+ boost::posix_time::ptime last_start_;
+
+ /// @brief Holds the timestamp when the stopwatch has been last stopped.
+ boost::posix_time::ptime last_stop_;
+
+ /// @brief Holds the total measured time since the stopwatch has been
+ /// first started after creation or reset.
+ boost::posix_time::time_duration cumulative_time_;
+
+};
+
+}
+}
+
+#endif // STOPWATCH_H
+
run_unittests_SOURCES += time_utilities_unittest.cc
run_unittests_SOURCES += range_utilities_unittest.cc
run_unittests_SOURCES += signal_set_unittest.cc
+run_unittests_SOURCES += stopwatch_unittest.cc
run_unittests_CPPFLAGS = $(AM_CPPFLAGS) $(GTEST_INCLUDES)
run_unittests_LDFLAGS = $(AM_LDFLAGS) $(GTEST_LDFLAGS)
--- /dev/null
+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#include <util/stopwatch.h>
+#include <util/stopwatch_impl.h>
+#include <gtest/gtest.h>
+#include <unistd.h>
+namespace {
+
+using namespace isc;
+using namespace isc::util;
+using namespace boost::posix_time;
+
+/// @brief @c StopwatchImpl mock object.
+///
+/// This class derives from the @c StopwatchImpl to override the
+/// @c StopwatchImpl::getCurrentTime. This method is internally called by
+/// the @c StopwatchImpl to determine the current time. By providing the
+/// implementation of this method which returns the fixed (well known)
+/// timestamp value we can obtain the deterministic values from the accessors
+/// of this class.
+///
+/// This class also includes some convenience methods to return the time
+/// durations in milliseconds.
+class StopwatchMock : public StopwatchImpl {
+public:
+
+ /// @brief Constructor.
+ ///
+ /// @param ref_time Reference time, i.e. the arbitrary time value from
+ /// which time is measured. The @c current_time_ value returned by the
+ /// @c StopwatchMock::getCurrentTime is initialized to this value.
+ /// Subsequent calls to the @c StopwatchMock::ffwd move the value of
+ /// the @c current_time_ forward.
+ StopwatchMock(const ptime& ref_time);
+
+ /// @brief Fast forward time.
+ ///
+ /// Moves the value of the @c current_time_ forward by the specified
+ /// number of milliseconds. As a result the timestamp returned by the
+ /// @c StopwatchMock::getCurrentTime moves by this value. This simulates
+ /// the time progress.
+ ///
+ /// @param ms Specifies the number of milliseconds to move current time.
+ void ffwd(const uint32_t ms);
+
+ /// @brief Returns the last duration in milliseconds.
+ uint32_t getLastDurationInMs() const;
+
+ /// @brief Returns the total duration in milliseconds.
+ uint32_t getTotalDurationInMs() const;
+
+protected:
+
+ /// @brief Returs the current time.
+ ///
+ /// This method returns the fixed @c current_time_ timestamp.
+ virtual ptime getCurrentTime() const;
+
+private:
+
+ /// @brief Holds the current time to be returned by the
+ /// @c StopwatchMock::getCurrentTime.
+ ptime current_time_;
+
+};
+
+StopwatchMock::StopwatchMock(const ptime& ref_time)
+ : StopwatchImpl(), current_time_(ref_time) {
+}
+
+void
+StopwatchMock::ffwd(const uint32_t ms) {
+ current_time_ += milliseconds(ms);
+}
+
+uint32_t
+StopwatchMock::getLastDurationInMs() const {
+ return (getLastDuration().total_milliseconds());
+}
+
+uint32_t
+StopwatchMock::getTotalDurationInMs() const {
+ return (getTotalDuration().total_milliseconds());
+}
+
+ptime
+StopwatchMock::getCurrentTime() const {
+ return (current_time_);
+}
+
+/// @brief Test fixture class for testing @c StopwatchImpl.
+class StopwatchTest : public ::testing::Test {
+protected:
+
+ /// @brief Set up the test.
+ ///
+ /// Initializes the reference time to be used to create the instances
+ /// of the @c StopwatchMock objects.
+ virtual void SetUp();
+
+ /// @brief Holds the reference time to be used to create the instances
+ /// of the @c StopwatchMock objects.
+ ptime ref_time_;
+};
+
+void
+StopwatchTest::SetUp() {
+ ref_time_ = microsec_clock::universal_time();
+}
+
+/// This test checks the behavior of the stopwatch when it is started
+/// and stopped multiple times. It uses the StopwatchMock object to
+/// control the "time flow" by setting the current time to arbitrary
+/// values using the StopwatchMock::ffwd. In addition, this test
+/// checks that the stopwatch can be reset.
+TEST_F(StopwatchTest, multipleMeasurements) {
+ StopwatchMock stopwatch(ref_time_);
+ // The stopwatch shouldn't automatically start. The initial
+ // durations should be set to 0.
+ EXPECT_EQ(0, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(0, stopwatch.getTotalDurationInMs());
+
+ stopwatch.start();
+
+ // Even though the stopwatch is started, the time is still set to
+ // the initial value. The durations should not be affected.
+ EXPECT_EQ(0, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(0, stopwatch.getTotalDurationInMs());
+
+ // Move the time by 10 ms.
+ stopwatch.ffwd(10);
+
+ // It should be possible to retrieve the durations even when the
+ // stopwatch is running.
+ EXPECT_EQ(10, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(10, stopwatch.getTotalDurationInMs());
+
+ // Now stop it and make sure that the same values are returned.
+ stopwatch.stop();
+
+ EXPECT_EQ(10, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(10, stopwatch.getTotalDurationInMs());
+
+ // Start it again, but don't move the time forward yet.
+ stopwatch.start();
+
+ // The new duration should be 0, but the total should be equal to
+ // the previously measured duration.
+ EXPECT_EQ(0, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(10, stopwatch.getTotalDurationInMs());
+
+ // Move time by 5 ms.
+ stopwatch.ffwd(5);
+
+ // New measured duration should be 5 ms. The total should be 15 ms.
+ EXPECT_EQ(5, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(15, stopwatch.getTotalDurationInMs());
+
+ // Stop it again and make sure the values returned are the same.
+ stopwatch.stop();
+
+ EXPECT_EQ(5, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(15, stopwatch.getTotalDurationInMs());
+
+ // Move the time forward while the stopwatch is stopped.
+ stopwatch.ffwd(8);
+
+ // The measured values should not be affected.
+ EXPECT_EQ(5, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(15, stopwatch.getTotalDurationInMs());
+
+ // Stop should be no-op in this case.
+ stopwatch.stop();
+
+ EXPECT_EQ(5, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(15, stopwatch.getTotalDurationInMs());
+
+ // Start the stopwatch again.
+ stopwatch.start();
+
+ // Move time by 3 ms.
+ stopwatch.ffwd(3);
+
+ // Since the stopwatch is running, the measured duration should
+ // get updated again.
+ EXPECT_EQ(3, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(18, stopwatch.getTotalDurationInMs());
+
+ // Move the time by 2 ms.
+ stopwatch.ffwd(2);
+
+ // Start should be no-op in this case.
+ stopwatch.start();
+
+ // But the durations should be updated.
+ EXPECT_EQ(5, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(20, stopwatch.getTotalDurationInMs());
+
+ // Make sure we can reset.
+ stopwatch.reset();
+
+ EXPECT_EQ(0, stopwatch.getLastDurationInMs());
+ EXPECT_EQ(0, stopwatch.getTotalDurationInMs());
+}
+
+// This test checks that the stopwatch works when the real clock is in use.
+TEST_F(StopwatchTest, realTime) {
+ // Initially, the measured time should be 0.
+ Stopwatch stopwatch;
+ EXPECT_EQ(0, stopwatch.getMilliseconds());
+ EXPECT_EQ(0, stopwatch.getTotalMilliseconds());
+
+ // Start the stopwatch.
+ stopwatch.start();
+
+ // Sleep for 1 ms. The stopwatch should measure this duration.
+ usleep(1000);
+
+ stopwatch.stop();
+
+ // The measured duration should be greater or equal 1 ms.
+ long current_duration = stopwatch.getMilliseconds();
+ EXPECT_GE(current_duration, 1);
+ EXPECT_EQ(current_duration, stopwatch.getTotalMilliseconds());
+
+ // Sleep for another 2 ms while the stopwatch is in the stopped state.
+ usleep(2000);
+
+ // In the stopped state, we should still have old durations measured.
+ EXPECT_EQ(current_duration, stopwatch.getMilliseconds());
+ EXPECT_EQ(current_duration, stopwatch.getTotalMilliseconds());
+
+ // Start it again.
+ stopwatch.start();
+
+ // Slee for 1 ms.
+ usleep(1000);
+
+ // The durations should get updated as appropriate.
+ current_duration = stopwatch.getMilliseconds();
+ EXPECT_GE(stopwatch.getMilliseconds(), 1);
+ EXPECT_GE(stopwatch.getTotalMilliseconds(), 2);
+}
+
+// Make sure that we can obtain the durations as microseconds.
+TEST_F(StopwatchTest, getMicroseconds) {
+ Stopwatch stopwatch;
+ stopwatch.start();
+
+ usleep(1000);
+
+ stopwatch.stop();
+
+ long current_duration = stopwatch.getMicroseconds();
+ EXPECT_GE(current_duration, 1000);
+ EXPECT_EQ(current_duration, stopwatch.getTotalMicroseconds());
+}
+
+// Make sure that we can use the "autostart" option to start the time
+// measurement in the constructor.
+TEST_F(StopwatchTest, autostart) {
+ Stopwatch stopwatch(true);
+ usleep(1000);
+
+ stopwatch.stop();
+
+ EXPECT_GE(stopwatch.getMilliseconds(), 1);
+ EXPECT_EQ(stopwatch.getMilliseconds(), stopwatch.getTotalMilliseconds());
+}
+
+} // end of anonymous namespace
projects / thirdparty / kea.git / commitdiff
