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#pragma once
#include <library/cpp/threading/future/future.h>
#include <library/cpp/testing/unittest/registar.h>
#include <util/generic/vector.h>
#include <functional>
#include <type_traits>
namespace NThreading::NTest {
namespace NPrivate {
void ExecuteAndWait(TVector<std::function<void()>> jobs, TFuture<void> waiter, size_t threads);
template <typename TPromises, typename FSetter>
void SetConcurrentAndWait(TPromises&& promises, FSetter&& setter, TFuture<void> waiter, size_t threads = 8) {
TVector<std::function<void()>> jobs;
jobs.reserve(std::size(promises));
for (auto& p : promises) {
jobs.push_back([p, setter]() mutable {setter(p); });
}
ExecuteAndWait(std::move(jobs), std::move(waiter), threads);
}
template <typename T>
auto MakePromise() {
if constexpr (std::is_same_v<T, void>) {
return NewPromise();
}
return NewPromise<T>();
}
}
template <typename T, typename FWaiterFactory, typename FSetterFactory, typename FChecker>
void TestManyStress(FWaiterFactory&& waiterFactory, FSetterFactory&& setterFactory, FChecker&& checker) {
for (size_t i : { 1, 2, 4, 8, 16, 32, 64, 128, 256 }) {
TVector<TPromise<T>> promises;
TVector<TFuture<T>> futures;
promises.reserve(i);
futures.reserve(i);
for (size_t j = 0; j < i; ++j) {
auto promise = NPrivate::MakePromise<T>();
futures.push_back(promise.GetFuture());
promises.push_back(std::move(promise));
}
auto waiter = waiterFactory(futures);
NPrivate::SetConcurrentAndWait(std::move(promises), [valueSetter = setterFactory(i)](auto&& p) { valueSetter(p); }
, waiter);
checker(waiter);
}
}
}
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