unittests/Support/TimerTest.cpp

   1 //===- unittests/TimerTest.cpp - Timer tests ------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/Support/Timer.h"
  11 #include "gtest/gtest.h"
  12
  13 #if _WIN32
  14 #include <windows.h>
  15 #else
  16 #include <time.h>
  17 #endif
  18
  19 using namespace llvm;
  20
  21 namespace {
  22
  23 // FIXME: Put this somewhere in Support, it's also used in LockFileManager.
  24 void SleepMS() {
  25 #if _WIN32
  26   Sleep(1);
  27 #else
  28   struct timespec Interval;
  29   Interval.tv_sec = 0;
  30   Interval.tv_nsec = 1000000;
  31   nanosleep(&Interval, nullptr);
  32 #endif
  33 }
  34
  35 TEST(Timer, Additivity) {
  36   Timer T1("T1", "T1");
  37
  38   EXPECT_TRUE(T1.isInitialized());
  39
  40   T1.startTimer();
  41   T1.stopTimer();
  42   auto TR1 = T1.getTotalTime();
  43
  44   T1.startTimer();
  45   SleepMS();
  46   T1.stopTimer();
  47   auto TR2 = T1.getTotalTime();
  48
  49   EXPECT_TRUE(TR1 < TR2);
  50 }
  51
  52 TEST(Timer, CheckIfTriggered) {
  53   Timer T1("T1", "T1");
  54
  55   EXPECT_FALSE(T1.hasTriggered());
  56   T1.startTimer();
  57   EXPECT_TRUE(T1.hasTriggered());
  58   T1.stopTimer();
  59   EXPECT_TRUE(T1.hasTriggered());
  60
  61   T1.clear();
  62   EXPECT_FALSE(T1.hasTriggered());
  63 }
  64
  65 } // end anon namespace