mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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143 lines
4.5 KiB
C++
143 lines
4.5 KiB
C++
// Copyright (c) 2018 Google LLC.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <unistd.h>
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#include <sstream>
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#include "gtest/gtest.h"
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#include "source/util/timer.h"
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namespace spvtools {
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namespace utils {
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namespace {
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// A mock class to mimic Timer class for a testing purpose. It has fixed
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// CPU/WALL/USR/SYS time, RSS delta, and the delta of the number of page faults.
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class MockTimer : public Timer {
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public:
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MockTimer(std::ostream* out, bool measure_mem_usage = false)
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: Timer(out, measure_mem_usage) {}
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double CPUTime() override { return 0.019123; }
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double WallTime() override { return 0.019723; }
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double UserTime() override { return 0.012723; }
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double SystemTime() override { return 0.002723; }
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long RSS() const override { return 360L; }
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long PageFault() const override { return 3600L; }
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};
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// This unit test checks whether the actual output of MockTimer::Report() is the
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// same as fixed CPU/WALL/USR/SYS time, RSS delta, and the delta of the number
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// of page faults that are returned by MockTimer.
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TEST(MockTimer, DoNothing) {
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std::ostringstream buf;
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PrintTimerDescription(&buf);
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MockTimer timer(&buf);
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timer.Start();
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// Do nothing.
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timer.Stop();
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timer.Report("TimerTest");
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EXPECT_EQ(0.019123, timer.CPUTime());
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EXPECT_EQ(0.019723, timer.WallTime());
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EXPECT_EQ(0.012723, timer.UserTime());
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EXPECT_EQ(0.002723, timer.SystemTime());
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EXPECT_EQ(
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" PASS name CPU time WALL time USR time"
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" SYS time\n TimerTest 0.02 0.02"
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" 0.01 0.00\n",
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buf.str());
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}
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// This unit test checks whether the ScopedTimer<MockTimer> correctly reports
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// the fixed CPU/WALL/USR/SYS time, RSS delta, and the delta of the number of
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// page faults that are returned by MockTimer.
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TEST(MockTimer, TestScopedTimer) {
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std::ostringstream buf;
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{
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ScopedTimer<MockTimer> scopedtimer(&buf, "ScopedTimerTest");
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// Do nothing.
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}
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EXPECT_EQ(
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" ScopedTimerTest 0.02 0.02 0.01"
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" 0.00\n",
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buf.str());
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}
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// A mock class to mimic CumulativeTimer class for a testing purpose. It has
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// fixed CPU/WALL/USR/SYS time, RSS delta, and the delta of the number of page
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// faults for each measurement (i.e., a pair of Start() and Stop()). If the
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// number of measurements increases, it increases |count_stop_| by the number of
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// calling Stop() and the amount of each resource usage is proportional to
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// |count_stop_|.
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class MockCumulativeTimer : public CumulativeTimer {
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public:
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MockCumulativeTimer(std::ostream* out, bool measure_mem_usage = false)
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: CumulativeTimer(out, measure_mem_usage), count_stop_(0) {}
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double CPUTime() override { return count_stop_ * 0.019123; }
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double WallTime() override { return count_stop_ * 0.019723; }
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double UserTime() override { return count_stop_ * 0.012723; }
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double SystemTime() override { return count_stop_ * 0.002723; }
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long RSS() const override { return count_stop_ * 360L; }
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long PageFault() const override { return count_stop_ * 3600L; }
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// Calling Stop() does nothing but just increases |count_stop_| by 1.
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void Stop() override { ++count_stop_; }
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private:
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unsigned int count_stop_;
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};
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// This unit test checks whether the MockCumulativeTimer correctly reports the
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// cumulative CPU/WALL/USR/SYS time, RSS delta, and the delta of the number of
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// page faults whose values are fixed for each measurement (i.e., a pair of
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// Start() and Stop()).
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TEST(MockCumulativeTimer, DoNothing) {
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CumulativeTimer* ctimer;
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std::ostringstream buf;
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{
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ctimer = new MockCumulativeTimer(&buf);
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ctimer->Start();
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// Do nothing.
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ctimer->Stop();
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}
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{
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ctimer->Start();
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// Do nothing.
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ctimer->Stop();
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ctimer->Report("CumulativeTimerTest");
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}
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EXPECT_EQ(
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" CumulativeTimerTest 0.04 0.04 0.03"
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" 0.01\n",
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buf.str());
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if (ctimer) delete ctimer;
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}
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} // namespace
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} // namespace utils
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} // namespace spvtools
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