// Copyright 2010-2013 RethinkDB, all rights reserved.

#include "unittest/gtest.hpp"

#include "arch/timing.hpp"

#include "concurrency/pmap.hpp"

#include "unittest/unittest_utils.hpp"

#include "utils.hpp"

namespace unittest {

int wait_array[2][10] = { { 1, 1, 2, 3, 5, 13, 20, 30, 40, 8 },

{ 5, 3, 2, 40, 30, 20, 8, 13, 1, 1 } };

void walk_wait_times(int i) {

ticks_t t = get_ticks();

for (int j = 0; j < 10; ++j) {

nap(wait_array[i][j]);

const ticks_t t2 = get_ticks();

const int64_t diff = static_cast<int64_t>(t2) - static_cast<int64_t>(t);

// Asserts that we're off by less than two milliseconds.

ASSERT_LT(abs(diff - wait_array[i][j] * MILLION), 2 * MILLION);

t = t2;

}

}

void run_TestApproximateWaitTimes() {

pmap(2, walk_wait_times);

}

TEST(TimerTest, TestApproximateWaitTimes) {

unittest::run_in_thread_pool(run_TestApproximateWaitTimes);

}

} // namespace unittest