1 /* 2 * Copyright (c) 2007, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.test; 24 25 import java.io.DataInputStream; 26 import java.io.InputStream; 27 import java.nio.ByteBuffer; 28 import java.util.zip.Checksum; 29 30 import java.lang.invoke.MethodHandle; 31 import java.lang.invoke.MethodHandles; 32 import java.lang.invoke.MethodType; 33 34 import org.graalvm.compiler.test.GraalTest; 35 import org.graalvm.compiler.core.test.GraalCompilerTest; 36 37 import org.junit.Test; 38 39 import static org.junit.Assume.assumeFalse; 40 41 /** 42 * Tests compiled calls to {@link java.util.zip.CRC32C}. 43 */ 44 @SuppressWarnings("javadoc") 45 public class CRC32CSubstitutionsTest extends GraalCompilerTest { 46 47 public static long updateBytes(byte[] input, int offset, int end) throws Throwable { 48 Class<?> crcClass = Class.forName("java.util.zip.CRC32C"); 49 MethodHandle newMH = MethodHandles.publicLookup().findConstructor(crcClass, MethodType.methodType(void.class)); 50 Checksum crc = (Checksum) newMH.invoke(); 51 crc.update(input, offset, end); 52 return crc.getValue(); 53 } 54 55 @Test 56 public void test1() throws Throwable { 57 assumeFalse(GraalTest.Java8OrEarlier); 58 String classfileName = CRC32CSubstitutionsTest.class.getSimpleName().replace('.', '/') + ".class"; 59 InputStream s = CRC32CSubstitutionsTest.class.getResourceAsStream(classfileName); 60 byte[] buf = new byte[s.available()]; 61 new DataInputStream(s).readFully(buf); 62 int end = buf.length; 63 for (int offset = 0; offset < buf.length; offset++) { 64 test("updateBytes", buf, offset, end); 65 } 66 } 67 68 public static long updateByteBuffer(ByteBuffer buffer) throws Throwable { 69 Class<?> crcClass = Class.forName("java.util.zip.CRC32C"); 70 MethodHandle newMH = MethodHandles.publicLookup().findConstructor(crcClass, MethodType.methodType(void.class)); 71 MethodHandle updateMH = MethodHandles.publicLookup().findVirtual(crcClass, "update", MethodType.methodType(void.class, ByteBuffer.class)); 72 Checksum crc = (Checksum) newMH.invoke(); 73 buffer.rewind(); 74 updateMH.invokeExact(crc, buffer); // Checksum.update(ByteBuffer) is also available since 9 75 return crc.getValue(); 76 } 77 78 @Test 79 public void test2() throws Throwable { 80 assumeFalse(GraalTest.Java8OrEarlier); 81 String classfileName = CRC32CSubstitutionsTest.class.getSimpleName().replace('.', '/') + ".class"; 82 InputStream s = CRC32CSubstitutionsTest.class.getResourceAsStream(classfileName); 83 byte[] buf = new byte[s.available()]; 84 new DataInputStream(s).readFully(buf); 85 86 ByteBuffer directBuf = ByteBuffer.allocateDirect(buf.length); 87 directBuf.put(buf); 88 ByteBuffer heapBuf = ByteBuffer.wrap(buf); 89 90 test("updateByteBuffer", directBuf); 91 test("updateByteBuffer", heapBuf); 92 } 93 94 }