| /* |
| * Copyright 2009, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| |
| #include "statsreport/common/highres_timer.h" |
| #include "gtest/gtest.h" |
| #include "base/basictypes.h" |
| |
| // These unittests have proven to be flaky on the build server. While |
| // we don't want them breaking the build, we still build them to guard |
| // against bitrot. On dev's machines during local builds we leave them |
| // enabled. |
| #ifndef BUILD_SERVER_BUILD |
| TEST(HighresTimer, MillisecondClock) { |
| #else |
| TEST(HighresTimer, DISABLED_MillisecondClock) { |
| #endif |
| HighresTimer timer; |
| |
| // note: this could fail if we context switch between initializing the timer |
| // and here. Very unlikely however. |
| EXPECT_EQ(0U, timer.GetElapsedMs()); |
| timer.Start(); |
| uint64 half_ms = HighresTimer::GetTimerFrequency() / 2000; |
| // busy wait for half a millisecond |
| while (timer.start_ticks() + half_ms > HighresTimer::GetCurrentTicks()) { |
| // Nothing |
| } |
| EXPECT_EQ(1U, timer.GetElapsedMs()); |
| } |
| |
| #ifndef BUILD_SERVER_BUILD |
| TEST(HighresTimer, SecondClock) { |
| #else |
| TEST(HighresTimer, DISABLED_SecondClock) { |
| #endif |
| HighresTimer timer; |
| |
| EXPECT_EQ(0U, timer.GetElapsedSec()); |
| #ifdef OS_WIN |
| ::Sleep(250); |
| #else |
| struct timespec ts1 = {0, 250000000}; |
| nanosleep(&ts1, 0); |
| #endif |
| EXPECT_EQ(0U, timer.GetElapsedSec()); |
| EXPECT_LE(230U, timer.GetElapsedMs()); |
| EXPECT_GE(270U, timer.GetElapsedMs()); |
| #ifdef OS_WIN |
| ::Sleep(251); |
| #else |
| struct timespec ts2 = {0, 251000000}; |
| nanosleep(&ts2, 0); |
| #endif |
| EXPECT_EQ(1U, timer.GetElapsedSec()); |
| } |