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#include <library/cpp/testing/gtest/gtest.h>
#include <library/cpp/yt/threading/spin_wait.h>
#include <library/cpp/yt/threading/spin_wait_hook.h>
#include <thread>
#include <mutex>
namespace NYT::NThreading {
namespace {
////////////////////////////////////////////////////////////////////////////////
bool SpinWaitSlowPathHookInvoked;
void SpinWaitSlowPathHook(
TCpuDuration cpuDelay,
const TSourceLocation& /*location*/,
ESpinLockActivityKind /*activityKind*/)
{
SpinWaitSlowPathHookInvoked = true;
auto delay = CpuDurationToDuration(cpuDelay);
EXPECT_GE(delay, TDuration::Seconds(1));
EXPECT_LE(delay, TDuration::Seconds(5));
}
TEST(TSpinWaitTest, SlowPathHook)
{
static std::once_flag registerFlag;
std::call_once(
registerFlag,
[] {
RegisterSpinWaitSlowPathHook(SpinWaitSlowPathHook);
});
SpinWaitSlowPathHookInvoked = false;
{
TSpinWait spinWait(__LOCATION__, ESpinLockActivityKind::ReadWrite);
for (int i = 0; i < 1'000'000; ++i) {
spinWait.Wait();
}
}
EXPECT_TRUE(SpinWaitSlowPathHookInvoked);
}
////////////////////////////////////////////////////////////////////////////////
} // namespace
} // namespace NYT::NThreading
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