<NME> ByteBufferSlicePoolTestCase.java
<BEF> ADDFILE
<MSG> Merge pull request #200 from fl4via/3.7

[XNIO-345][XNIO-346] Fix memory leak problems in ByteBufferSlicePool
<DFF> @@ -0,0 +1,155 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ *
+ * Copyright 2019 Red Hat, Inc. and/or its affiliates, and individual
+ * contributors as indicated by the @author tags.
+ *
+ * Licensed 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
+ *
+ *     http://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 org.xnio;
+
+import java.nio.ByteBuffer;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Test for {@link ByteBufferSlicePool}.
+ * 
+ * @author <a href="mailto:flavia.rainone@jboss.com">Flavia Rainone</a>
+ *
+ */
+public class ByteBufferSlicePoolTestCase {
+
+    @Test
+    public void basicSlicePool() {
+        ByteBufferSlicePool slicePool = new ByteBufferSlicePool(10, 10);
+        for (int i = 0; i < 10; i++){
+            Pooled<ByteBuffer> pooledBuffer = slicePool.allocate();
+            assertNotNull(pooledBuffer);
+            ByteBuffer buffer = pooledBuffer.getResource();
+            assertNotNull(buffer);
+            assertEquals(10, buffer.capacity());
+            assertEquals(0, buffer.position());
+            pooledBuffer.free();
+            boolean failed = false;
+            try {
+                pooledBuffer.getResource();
+            } catch (IllegalStateException expected) {
+                failed = true;
+            }
+            assertTrue(failed);
+        }
+    }
+
+    @Test
+    public void bufferAllocatorSlicePool() {
+        ByteBufferSlicePool slicePool = new ByteBufferSlicePool(BufferAllocator.BYTE_BUFFER_ALLOCATOR, 2, 5);
+        for (int i = 0; i < 2; i++){
+            Pooled<ByteBuffer> pooledBuffer = slicePool.allocate();
+            assertNotNull(pooledBuffer);
+            ByteBuffer buffer = pooledBuffer.getResource();
+            assertNotNull(buffer);
+            assertEquals(2, buffer.capacity());
+            assertEquals(0, buffer.position());
+            pooledBuffer.free();
+            boolean failed = false;
+            try {
+                pooledBuffer.getResource();
+            } catch (IllegalStateException expected) {
+                failed = true;
+            }
+            assertTrue(failed);
+        }
+    }
+
+    @Test
+    public void bufferAllocatorNoThreadLocalSlicePool() {
+        ByteBufferSlicePool slicePool = new ByteBufferSlicePool(BufferAllocator.BYTE_BUFFER_ALLOCATOR, 8, 12, 0);
+        Pooled<ByteBuffer> pooledBuffer = slicePool.allocate();
+        assertNotNull(pooledBuffer);
+        ByteBuffer buffer = pooledBuffer.getResource();
+        assertNotNull(buffer);
+        assertEquals(8, buffer.capacity());
+        assertEquals(0, buffer.position());
+        pooledBuffer.free();
+        boolean failed = false;
+        try {
+            pooledBuffer.getResource();
+        } catch (IllegalStateException expected) {
+            failed = true;
+        }
+        assertTrue(failed);
+    }
+
+    @Test
+    public void directBufferAllocator() throws InterruptedException {
+        for (int i = 0; i < 100; i++)
+            stressDirectBufferReuse();
+    }
+
+    private void stressDirectBufferReuse() throws InterruptedException {
+        ByteBufferSlicePool slicePool = new ByteBufferSlicePool(BufferAllocator.DIRECT_BYTE_BUFFER_ALLOCATOR, 8, 24);
+        slicePool.allocate();
+        slicePool.clean();
+
+        // reusing the same size
+        slicePool = new ByteBufferSlicePool(BufferAllocator.DIRECT_BYTE_BUFFER_ALLOCATOR, 8, 24);
+        slicePool.allocate();
+        slicePool.clean();
+
+        // reusing for a smaller size
+        slicePool = new ByteBufferSlicePool(BufferAllocator.DIRECT_BYTE_BUFFER_ALLOCATOR, 7, 21);
+        slicePool.allocate();
+        slicePool.clean();
+
+        // reusing for a bigger size
+        slicePool = new ByteBufferSlicePool(BufferAllocator.DIRECT_BYTE_BUFFER_ALLOCATOR, 10, 20);
+        slicePool.allocate();
+        slicePool.clean();
+    }
+
+
+    @Test
+    public void directBufferAllocator2() throws InterruptedException {
+        for (int i = 0; i < 100; i++)
+            stressDirectBufferReuse2();
+    }
+
+    private void stressDirectBufferReuse2() throws InterruptedException {
+        ByteBufferSlicePool slicePool = new ByteBufferSlicePool(BufferAllocator.DIRECT_BYTE_BUFFER_ALLOCATOR, 8, 24);
+        slicePool.allocate();
+        slicePool.clean();
+
+        // reusing the same size
+        slicePool = new ByteBufferSlicePool(BufferAllocator.DIRECT_BYTE_BUFFER_ALLOCATOR, 8, 24);
+        slicePool.allocate();
+        slicePool.clean();
+
+        // reusing for a smaller size
+        slicePool = new ByteBufferSlicePool(BufferAllocator.DIRECT_BYTE_BUFFER_ALLOCATOR, 7, 21);
+        slicePool.allocate();
+        slicePool.clean();
+
+        // reusing for a bigger size whose first buffer is bigger than all previous allocated byte buffer regions
+        slicePool = new ByteBufferSlicePool(BufferAllocator.DIRECT_BYTE_BUFFER_ALLOCATOR, 250, 10000);
+        slicePool.allocate();
+        slicePool.clean();
+    }
+
+}
\ No newline at end of file

{'addition_count': 155, 'commit_subject': 'Merge pull request #200 from fl4via/3.7', 'deletion_count': 0, 'file_extension': '.java', 'lang': 'java', 'license': 'apache-2.0', 'repo_name': 'xnio/xnio'}