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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2018 Red Hat, Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include "rgw/rgw_reshard.h"
#include <spawn/spawn.hpp>
#include <gtest/gtest.h>
using namespace std::chrono_literals;
using Clock = RGWReshardWait::Clock;
TEST(ReshardWait, wait_block)
{
constexpr ceph::timespan wait_duration = 10ms;
RGWReshardWait waiter(wait_duration);
const auto start = Clock::now();
EXPECT_EQ(0, waiter.wait(null_yield));
const ceph::timespan elapsed = Clock::now() - start;
EXPECT_LE(wait_duration, elapsed); // waited at least 10ms
waiter.stop();
}
TEST(ReshardWait, stop_block)
{
constexpr ceph::timespan short_duration = 10ms;
constexpr ceph::timespan long_duration = 10s;
RGWReshardWait long_waiter(long_duration);
RGWReshardWait short_waiter(short_duration);
const auto start = Clock::now();
std::thread thread([&long_waiter] {
EXPECT_EQ(-ECANCELED, long_waiter.wait(null_yield));
});
EXPECT_EQ(0, short_waiter.wait(null_yield));
long_waiter.stop(); // cancel long waiter
thread.join();
const ceph::timespan elapsed = Clock::now() - start;
EXPECT_LE(short_duration, elapsed); // waited at least 10ms
EXPECT_GT(long_duration, elapsed); // waited less than 10s
short_waiter.stop();
}
TEST(ReshardWait, wait_yield)
{
constexpr ceph::timespan wait_duration = 50ms;
RGWReshardWait waiter(wait_duration);
boost::asio::io_context context;
spawn::spawn(context, [&] (yield_context yield) {
EXPECT_EQ(0, waiter.wait(optional_yield{context, yield}));
});
const auto start = Clock::now();
EXPECT_EQ(1u, context.poll()); // spawn
EXPECT_FALSE(context.stopped());
EXPECT_EQ(1u, context.run_one()); // timeout
EXPECT_TRUE(context.stopped());
const ceph::timespan elapsed = Clock::now() - start;
EXPECT_LE(wait_duration, elapsed); // waited at least 10ms
waiter.stop();
}
TEST(ReshardWait, stop_yield)
{
constexpr ceph::timespan short_duration = 50ms;
constexpr ceph::timespan long_duration = 10s;
RGWReshardWait long_waiter(long_duration);
RGWReshardWait short_waiter(short_duration);
boost::asio::io_context context;
spawn::spawn(context,
[&] (yield_context yield) {
EXPECT_EQ(-ECANCELED, long_waiter.wait(optional_yield{context, yield}));
});
const auto start = Clock::now();
EXPECT_EQ(1u, context.poll()); // spawn
EXPECT_FALSE(context.stopped());
EXPECT_EQ(0, short_waiter.wait(null_yield));
long_waiter.stop(); // cancel long waiter
EXPECT_EQ(1u, context.run_one_for(short_duration)); // timeout
EXPECT_TRUE(context.stopped());
const ceph::timespan elapsed = Clock::now() - start;
EXPECT_LE(short_duration, elapsed); // waited at least 10ms
EXPECT_GT(long_duration, elapsed); // waited less than 10s
short_waiter.stop();
}
TEST(ReshardWait, stop_multiple)
{
constexpr ceph::timespan short_duration = 50ms;
constexpr ceph::timespan long_duration = 10s;
RGWReshardWait long_waiter(long_duration);
RGWReshardWait short_waiter(short_duration);
// spawn 4 threads
std::vector<std::thread> threads;
{
auto sync_waiter([&long_waiter] {
EXPECT_EQ(-ECANCELED, long_waiter.wait(null_yield));
});
threads.emplace_back(sync_waiter);
threads.emplace_back(sync_waiter);
threads.emplace_back(sync_waiter);
threads.emplace_back(sync_waiter);
}
// spawn 4 coroutines
boost::asio::io_context context;
{
auto async_waiter = [&] (yield_context yield) {
EXPECT_EQ(-ECANCELED, long_waiter.wait(optional_yield{context, yield}));
};
spawn::spawn(context, async_waiter);
spawn::spawn(context, async_waiter);
spawn::spawn(context, async_waiter);
spawn::spawn(context, async_waiter);
}
const auto start = Clock::now();
EXPECT_EQ(4u, context.poll()); // spawn
EXPECT_FALSE(context.stopped());
EXPECT_EQ(0, short_waiter.wait(null_yield));
long_waiter.stop(); // cancel long waiter
EXPECT_EQ(4u, context.run_for(short_duration)); // timeout
EXPECT_TRUE(context.stopped());
for (auto& thread : threads) {
thread.join();
}
const ceph::timespan elapsed = Clock::now() - start;
EXPECT_LE(short_duration, elapsed); // waited at least 10ms
EXPECT_GT(long_duration, elapsed); // waited less than 10s
short_waiter.stop();
}
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