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//===-- TimerTest.cpp -------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Utility/StreamString.h"
#include "lldb/Utility/Timer.h"
#include "gtest/gtest.h"
#include <thread>
using namespace lldb_private;
TEST(TimerTest, CategoryTimes) {
Timer::ResetCategoryTimes();
{
static Timer::Category tcat("CAT1");
Timer t(tcat, "");
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
StreamString ss;
Timer::DumpCategoryTimes(&ss);
double seconds;
ASSERT_EQ(1, sscanf(ss.GetData(), "%lf sec for CAT1", &seconds));
EXPECT_LT(0.001, seconds);
EXPECT_GT(0.1, seconds);
}
TEST(TimerTest, CategoryTimesNested) {
Timer::ResetCategoryTimes();
{
static Timer::Category tcat1("CAT1");
Timer t1(tcat1, "");
std::this_thread::sleep_for(std::chrono::milliseconds(10));
// Explicitly testing the same category as above.
Timer t2(tcat1, "");
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
StreamString ss;
Timer::DumpCategoryTimes(&ss);
double seconds;
// It should only appear once.
ASSERT_EQ(ss.GetString().count("CAT1"), 1U);
ASSERT_EQ(1, sscanf(ss.GetData(), "%lf sec for CAT1", &seconds));
EXPECT_LT(0.002, seconds);
EXPECT_GT(0.2, seconds);
}
TEST(TimerTest, CategoryTimes2) {
Timer::ResetCategoryTimes();
{
static Timer::Category tcat1("CAT1");
Timer t1(tcat1, "");
std::this_thread::sleep_for(std::chrono::milliseconds(100));
static Timer::Category tcat2("CAT2");
Timer t2(tcat2, "");
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
StreamString ss;
Timer::DumpCategoryTimes(&ss);
double seconds1, seconds2;
ASSERT_EQ(2, sscanf(ss.GetData(), "%lf sec for CAT1%*[\n ]%lf sec for CAT2",
&seconds1, &seconds2))
<< "String: " << ss.GetData();
EXPECT_LT(0.01, seconds1);
EXPECT_GT(1, seconds1);
EXPECT_LT(0.001, seconds2);
EXPECT_GT(0.1, seconds2);
}
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