7cb1c10fed
get0() dates back from the days where Seastar futures carried tuples, and get0() was a way to get the first (and usually only) element. Now it's a distraction, and Seastar is likely to deprecate and remove it. Replace with seastar::future::get(), which does the same thing.
54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
/*
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* Copyright (C) 2018-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <seastar/core/sleep.hh>
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#include <seastar/util/noncopyable_function.hh>
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#include "seastarx.hh"
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inline
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void eventually(noncopyable_function<void ()> f, size_t max_attempts = 17) {
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size_t attempts = 0;
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while (true) {
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try {
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f();
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break;
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} catch (...) {
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if (++attempts < max_attempts) {
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sleep(std::chrono::milliseconds(1 << attempts)).get();
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} else {
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throw;
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}
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}
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}
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}
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inline
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bool eventually_true(noncopyable_function<bool ()> f) {
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const unsigned max_attempts = 15;
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unsigned attempts = 0;
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while (true) {
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if (f()) {
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return true;
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}
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if (++attempts < max_attempts) {
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seastar::sleep(std::chrono::milliseconds(1 << attempts)).get();
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} else {
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return false;
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}
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}
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return false;
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}
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#define REQUIRE_EVENTUALLY_EQUAL(a, b) BOOST_REQUIRE(eventually_true([&] { return a == b; }))
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#define CHECK_EVENTUALLY_EQUAL(a, b) BOOST_CHECK(eventually_true([&] { return a == b; }))
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