56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
/*
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SPDX-License-Identifier: MIT
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Copyright © 2023 Amebis
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*/
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#include "pch.h"
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using namespace std;
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using namespace Microsoft::VisualStudio::CppUnitTestFramework;
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namespace UnitTests
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{
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constexpr size_t capacity = 50;
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TEST_CLASS(ring)
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{
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public:
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TEST_METHOD(test)
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{
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using ring_t = stdex::ring<int, capacity>;
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ring_t ring;
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thread writer([](_Inout_ ring_t& ring)
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{
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int seed = 0;
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for (size_t retries = 1000; retries--;) {
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for (auto to_write = static_cast<size_t>(static_cast<uint64_t>(::rand()) * capacity / 5 / RAND_MAX); to_write;) {
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int* ptr; size_t num_write;
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tie(ptr, num_write) = ring.back();
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if (to_write < num_write)
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num_write = to_write;
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for (size_t i = 0; i < num_write; i++)
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ptr[i] = seed++;
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ring.push(num_write);
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to_write -= num_write;
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}
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}
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ring.quit();
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}, ref(ring));
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int seed = 0;
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for (;;) {
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int* ptr; size_t num_read;
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tie(ptr, num_read) = ring.front();
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if (!ptr) _Unlikely_
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break;
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if (num_read > 7)
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num_read = 7;
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for (size_t i = 0; i < num_read; ++i)
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Assert::AreEqual(seed++, ptr[i]);
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ring.pop(num_read);
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}
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writer.join();
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}
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};
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}
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