ParkingLotTest.cpp File Reference

#include <thread>
#include <folly/synchronization/ParkingLot.h>
#include <folly/portability/GTest.h>
#include <folly/synchronization/Baton.h>

Go to the source code of this file.

Classes
class	WaitableMutex

Functions
	TEST (ParkingLot, multilot)
	TEST (ParkingLot, LargeWord)
	TEST (ParkingLot, WaitableMutexTest)

Function Documentation

TEST	(	ParkingLot	,
		multilot
	)

Definition at line 26 of file ParkingLotTest.cpp.

References count, folly::data(), EXPECT_EQ, large, folly::Baton< MayBlock, Atom >::post(), folly::RemoveContinue, small, and folly::Baton< MayBlock, Atom >::wait().

                           {
  using SmallLot = ParkingLot<bool>;
  using LargeLot = ParkingLot<uint64_t>;
  SmallLot smalllot;
  LargeLot largelot;
  folly::Baton<> sb;
  folly::Baton<> lb;

  std::thread small([&]() {
    smalllot.park(0, false, [] { return true; }, [&]() { sb.post(); });
  });
  std::thread large([&]() {
    largelot.park(0, true, [] { return true; }, [&]() { lb.post(); });
  });
  sb.wait();
  lb.wait();

  int count = 0;
  smalllot.unpark(0, [&](bool data) {
    count++;
    EXPECT_EQ(data, false);
    return UnparkControl::RemoveContinue;
  });
  EXPECT_EQ(count, 1);
  count = 0;
  largelot.unpark(0, [&](bool data) {
    count++;
    EXPECT_EQ(data, true);
    return UnparkControl::RemoveContinue;
  });
  EXPECT_EQ(count, 1);

  small.join();
  large.join();
}

TEST	(	ParkingLot	,
		LargeWord
	)

Definition at line 64 of file ParkingLotTest.cpp.

References lot, and folly::ParkingLot< Data >::park().

                            {
  ParkingLot<uint64_t> lot;
  std::atomic<uint64_t> w{0};

  lot.park(0, false, [&]() { return w == 1; }, []() {});

  // Validate should return false, will hang otherwise.
}

TEST	(	ParkingLot	,
		WaitableMutexTest
	)

Definition at line 106 of file ParkingLotTest.cpp.

References g(), folly::kIsSanitizeThread, folly::futures::sleep(), folly::pushmi::detail::t, and WaitableMutex::wait().

                                    {
  if (kIsSanitizeThread) {
    return;
  }
  std::atomic<bool> go{false};
  WaitableMutex mu;
  std::thread t([&]() {
    std::lock_guard<WaitableMutex> g(mu);
    mu.wait([&]() { return go == true; });
  });
  sleep(1);

  {
    std::lock_guard<WaitableMutex> g(mu);
    go = true;
  }
  t.join();
}