70 lines
2.7 KiB
Java
70 lines
2.7 KiB
Java
/*
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* Copyright 2021 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.buffer.api.tests;
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import io.netty.buffer.api.MemoryManager;
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import io.netty.buffer.api.internal.Statics;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.MethodSource;
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import java.util.List;
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import java.util.Optional;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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import static io.netty.buffer.api.MemoryManager.using;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.junit.jupiter.api.Assumptions.assumeTrue;
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public class BufferCleanerTest extends BufferTestSupport {
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static Fixture[] unsafeAllocators() {
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Optional<MemoryManager> maybeManager = MemoryManager.lookupImplementation("Unsafe");
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assumeTrue(maybeManager.isPresent());
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MemoryManager manager = maybeManager.get();
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List<Fixture> initFixtures = initialAllocators().stream().flatMap(f -> {
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Stream.Builder<Fixture> builder = Stream.builder();
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builder.add(new Fixture(f + "/" + manager, () -> using(manager, f), f.getProperties()));
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return builder.build();
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}).collect(Collectors.toList());
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return fixtureCombinations(initFixtures).filter(f -> f.isDirect()).toArray(Fixture[]::new);
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}
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@ParameterizedTest
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@MethodSource("unsafeAllocators")
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public void bufferMustBeClosedByCleaner(Fixture fixture) throws InterruptedException {
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var initial = Statics.MEM_USAGE_NATIVE.sum();
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int allocationSize = 1024;
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allocateAndForget(fixture, allocationSize);
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long sum = 0;
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for (int i = 0; i < 15; i++) {
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System.gc();
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System.runFinalization();
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sum = Statics.MEM_USAGE_NATIVE.sum() - initial;
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if (sum < allocationSize) {
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// The memory must have been cleaned.
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return;
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}
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}
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assertThat(sum).isLessThan(allocationSize);
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}
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private static void allocateAndForget(Fixture fixture, int size) {
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var allocator = fixture.createAllocator();
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allocator.allocate(size);
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allocator.close();
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}
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}
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