netty-incubator-buffer-api/src/test/java/io/netty/buffer/api/BufferCleanerTest.java

49 lines
1.8 KiB
Java

/*
* Copyright 2021 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.buffer.api;
import io.netty.buffer.api.memseg.NativeMemorySegmentManager;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import static org.assertj.core.api.Assertions.assertThat;
public class BufferCleanerTest extends BufferTestSupport {
@ParameterizedTest
@MethodSource("directAllocators")
public void bufferMustBeClosedByCleaner(Fixture fixture) throws InterruptedException {
var initial = NativeMemorySegmentManager.MEM_USAGE_NATIVE.sum();
int allocationSize = 1024;
allocateAndForget(fixture, allocationSize);
long sum = 0;
for (int i = 0; i < 15; i++) {
System.gc();
System.runFinalization();
sum = NativeMemorySegmentManager.MEM_USAGE_NATIVE.sum() - initial;
if (sum < allocationSize) {
return;
}
}
assertThat(sum).isLessThan(allocationSize);
}
private static void allocateAndForget(Fixture fixture, int size) {
var allocator = fixture.createAllocator();
allocator.close();
allocator.allocate(size);
}
}