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Copy pathasync_auto_reset_event_tests.cpp
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140 lines (103 loc) · 2.47 KB
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///////////////////////////////////////////////////////////////////////////////
// Copyright (c) Lewis Baker
// Licenced under MIT license. See LICENSE.txt for details.
///////////////////////////////////////////////////////////////////////////////
#include <cppcoro/async_auto_reset_event.hpp>
#include <cppcoro/config.hpp>
#include <cppcoro/task.hpp>
#include <cppcoro/sync_wait.hpp>
#include <cppcoro/when_all.hpp>
#include <cppcoro/when_all_ready.hpp>
#include <cppcoro/on_scope_exit.hpp>
#include <cppcoro/static_thread_pool.hpp>
#include <thread>
#include <cassert>
#include <vector>
#include <ostream>
#include "doctest/cppcoro_doctest.h"
TEST_SUITE_BEGIN("async_auto_reset_event");
TEST_CASE("single waiter")
{
cppcoro::async_auto_reset_event event;
bool started = false;
bool finished = false;
auto run = [&]() -> cppcoro::task<>
{
started = true;
co_await event;
finished = true;
};
auto check = [&]() -> cppcoro::task<>
{
CHECK(started);
CHECK(!finished);
event.set();
CHECK(finished);
co_return;
};
cppcoro::sync_wait(cppcoro::when_all_ready(run(), check()));
}
TEST_CASE("multiple waiters")
{
cppcoro::async_auto_reset_event event;
auto run = [&](bool& flag) -> cppcoro::task<>
{
co_await event;
flag = true;
};
bool completed1 = false;
bool completed2 = false;
auto check = [&]() -> cppcoro::task<>
{
CHECK(!completed1);
CHECK(!completed2);
event.set();
CHECK(completed1);
CHECK(!completed2);
event.set();
CHECK(completed2);
co_return;
};
cppcoro::sync_wait(cppcoro::when_all_ready(
run(completed1),
run(completed2),
check()));
}
TEST_CASE("multi-threaded")
{
cppcoro::static_thread_pool tp{ 3 };
auto run = [&]() -> cppcoro::task<>
{
cppcoro::async_auto_reset_event event;
int value = 0;
auto startWaiter = [&]() -> cppcoro::task<>
{
co_await tp.schedule();
co_await event;
++value;
event.set();
};
auto startSignaller = [&]() -> cppcoro::task<>
{
co_await tp.schedule();
value = 5;
event.set();
};
std::vector<cppcoro::task<>> tasks;
tasks.emplace_back(startSignaller());
for (int i = 0; i < 1000; ++i)
{
tasks.emplace_back(startWaiter());
}
co_await cppcoro::when_all(std::move(tasks));
// NOTE: Can't use CHECK() here because it's not thread-safe
assert(value == 1005);
};
std::vector<cppcoro::task<>> tasks;
for (int i = 0; i < 1000; ++i)
{
tasks.emplace_back(run());
}
cppcoro::sync_wait(cppcoro::when_all(std::move(tasks)));
}
TEST_SUITE_END();