--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/intrinsics/zip/TestCRC32.java Tue Jul 12 18:24:48 2016 +0300
@@ -0,0 +1,223 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8143012
+ * @summary CRC32 Intrinsics support on SPARC
+ *
+ * @run main/othervm/timeout=720 -Xbatch compiler.intrinsics.zip.TestCRC32 -m
+ */
+
+package compiler.intrinsics.zip;
+
+import java.nio.ByteBuffer;
+import java.util.zip.CRC32;
+import java.util.zip.Checksum;
+
+public class TestCRC32 {
+ public static void main(String[] args) {
+ int offset = Integer.getInteger("offset", 0);
+ int msgSize = Integer.getInteger("msgSize", 512);
+ boolean multi = false;
+ int iters = 20000;
+ int warmupIters = 20000;
+
+ if (args.length > 0) {
+ if (args[0].equals("-m")) {
+ multi = true;
+ } else {
+ iters = Integer.valueOf(args[0]);
+ }
+ if (args.length > 1) {
+ warmupIters = Integer.valueOf(args[1]);
+ }
+ }
+
+ if (multi) {
+ test_multi(warmupIters);
+ return;
+ }
+
+ System.out.println(" offset = " + offset);
+ System.out.println("msgSize = " + msgSize + " bytes");
+ System.out.println(" iters = " + iters);
+
+ byte[] b = initializedBytes(msgSize, offset);
+
+ CRC32 crc0 = new CRC32();
+ CRC32 crc1 = new CRC32();
+ CRC32 crc2 = new CRC32();
+
+ crc0.update(b, offset, msgSize);
+
+ System.out.println("-------------------------------------------------------");
+
+ /* warm up */
+ for (int i = 0; i < warmupIters; i++) {
+ crc1.reset();
+ crc1.update(b, offset, msgSize);
+ }
+
+ /* measure performance */
+ long start = System.nanoTime();
+ for (int i = 0; i < iters; i++) {
+ crc1.reset();
+ crc1.update(b, offset, msgSize);
+ }
+ long end = System.nanoTime();
+ double total = (double)(end - start)/1e9; // in seconds
+ double thruput = (double)msgSize*iters/1e6/total; // in MB/s
+ System.out.println("CRC32.update(byte[]) runtime = " + total + " seconds");
+ System.out.println("CRC32.update(byte[]) throughput = " + thruput + " MB/s");
+
+ /* check correctness */
+ for (int i = 0; i < iters; i++) {
+ crc1.reset();
+ crc1.update(b, offset, msgSize);
+ if (!check(crc0, crc1)) break;
+ }
+ report("CRCs", crc0, crc1);
+
+ System.out.println("-------------------------------------------------------");
+
+ ByteBuffer buf = ByteBuffer.allocateDirect(msgSize);
+ buf.put(b, offset, msgSize);
+ buf.flip();
+
+ /* warm up */
+ for (int i = 0; i < warmupIters; i++) {
+ crc2.reset();
+ crc2.update(buf);
+ buf.rewind();
+ }
+
+ /* measure performance */
+ start = System.nanoTime();
+ for (int i = 0; i < iters; i++) {
+ crc2.reset();
+ crc2.update(buf);
+ buf.rewind();
+ }
+ end = System.nanoTime();
+ total = (double)(end - start)/1e9; // in seconds
+ thruput = (double)msgSize*iters/1e6/total; // in MB/s
+ System.out.println("CRC32.update(ByteBuffer) runtime = " + total + " seconds");
+ System.out.println("CRC32.update(ByteBuffer) throughput = " + thruput + " MB/s");
+
+ /* check correctness */
+ for (int i = 0; i < iters; i++) {
+ crc2.reset();
+ crc2.update(buf);
+ buf.rewind();
+ if (!check(crc0, crc2)) break;
+ }
+ report("CRCs", crc0, crc2);
+
+ System.out.println("-------------------------------------------------------");
+ }
+
+ private static void report(String s, Checksum crc0, Checksum crc1) {
+ System.out.printf("%s: crc0 = %08x, crc1 = %08x\n",
+ s, crc0.getValue(), crc1.getValue());
+ }
+
+ private static boolean check(Checksum crc0, Checksum crc1) {
+ if (crc0.getValue() != crc1.getValue()) {
+ System.err.printf("ERROR: crc0 = %08x, crc1 = %08x\n",
+ crc0.getValue(), crc1.getValue());
+ return false;
+ }
+ return true;
+ }
+
+ private static byte[] initializedBytes(int M, int offset) {
+ byte[] bytes = new byte[M + offset];
+ for (int i = 0; i < offset; i++) {
+ bytes[i] = (byte) i;
+ }
+ for (int i = offset; i < bytes.length; i++) {
+ bytes[i] = (byte) (i - offset);
+ }
+ return bytes;
+ }
+
+ private static void test_multi(int iters) {
+ int len1 = 8; // the 8B/iteration loop
+ int len2 = 32; // the 32B/iteration loop
+ int len3 = 4096; // the 4KB/iteration loop
+
+ byte[] b = initializedBytes(len3*16, 0);
+ int[] offsets = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 16, 32, 64, 128, 256, 512 };
+ int[] sizes = { 0, 1, 2, 3, 4, 5, 6, 7,
+ len1, len1+1, len1+2, len1+3, len1+4, len1+5, len1+6, len1+7,
+ len1*2, len1*2+1, len1*2+3, len1*2+5, len1*2+7,
+ len2, len2+1, len2+3, len2+5, len2+7,
+ len2*2, len2*4, len2*8, len2*16, len2*32, len2*64,
+ len3, len3+1, len3+3, len3+5, len3+7,
+ len3*2, len3*4, len3*8,
+ len1+len2, len1+len2+1, len1+len2+3, len1+len2+5, len1+len2+7,
+ len1+len3, len1+len3+1, len1+len3+3, len1+len3+5, len1+len3+7,
+ len2+len3, len2+len3+1, len2+len3+3, len2+len3+5, len2+len3+7,
+ len1+len2+len3, len1+len2+len3+1, len1+len2+len3+3,
+ len1+len2+len3+5, len1+len2+len3+7,
+ (len1+len2+len3)*2, (len1+len2+len3)*2+1, (len1+len2+len3)*2+3,
+ (len1+len2+len3)*2+5, (len1+len2+len3)*2+7,
+ (len1+len2+len3)*3, (len1+len2+len3)*3-1, (len1+len2+len3)*3-3,
+ (len1+len2+len3)*3-5, (len1+len2+len3)*3-7 };
+ CRC32[] crc0 = new CRC32[offsets.length*sizes.length];
+ CRC32[] crc1 = new CRC32[offsets.length*sizes.length];
+ int i, j, k;
+
+ System.out.printf("testing %d cases ...\n", offsets.length*sizes.length);
+
+ /* set the result from interpreter as reference */
+ for (i = 0; i < offsets.length; i++) {
+ for (j = 0; j < sizes.length; j++) {
+ crc0[i*sizes.length + j] = new CRC32();
+ crc1[i*sizes.length + j] = new CRC32();
+ crc0[i*sizes.length + j].update(b, offsets[i], sizes[j]);
+ }
+ }
+
+ /* warm up the JIT compiler and get result */
+ for (k = 0; k < iters; k++) {
+ for (i = 0; i < offsets.length; i++) {
+ for (j = 0; j < sizes.length; j++) {
+ crc1[i*sizes.length + j].reset();
+ crc1[i*sizes.length + j].update(b, offsets[i], sizes[j]);
+ }
+ }
+ }
+
+ /* check correctness */
+ for (i = 0; i < offsets.length; i++) {
+ for (j = 0; j < sizes.length; j++) {
+ if (!check(crc0[i*sizes.length + j], crc1[i*sizes.length + j])) {
+ System.out.printf("offsets[%d] = %d", i, offsets[i]);
+ System.out.printf("\tsizes[%d] = %d\n", j, sizes[j]);
+ }
+ }
+ }
+ }
+}