8326421: Add jtreg test for large arrayCopy disjoint case.

Co-authored-by: Steve Dohrmann <steve.dohrmann@intel.com> Reviewed-by: kvn, sviswanathan
2024-05-02 18:28:50 +00:00 · 2024-05-02 18:28:50 +00:00 · 73cdc9a070
commit 73cdc9a070
parent e2c0cfef14
1 changed files with 87 additions and 0 deletions
--- a/test/hotspot/jtreg/compiler/arraycopy/TestArrayCopyDisjointLarge.java
+++ b/test/hotspot/jtreg/compiler/arraycopy/TestArrayCopyDisjointLarge.java
@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2024, 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.
+ */
+
+package compiler.arraycopy;
+import java.util.Random;
+
+/**
+ * @test
+ * @bug 8310159
+ * @summary Test large arrayCopy.
+ *
+ * @run main/timeout=600 compiler.arraycopy.TestArrayCopyDisjointLarge
+ *
+ */
+
+public class TestArrayCopyDisjointLarge {
+
+    public static final int ARRLEN = 4194304;
+    public static int fromPos, toPos;
+    public static byte[] fromByteArr, toByteArr;
+
+    public static void setup() {
+        fromPos = 0;
+        toPos = 0;
+
+        fromByteArr = new byte[ARRLEN];
+        toByteArr = new byte[ARRLEN];
+        for (int i = 0 ; i < ARRLEN ; i++) {
+            fromByteArr[i] = (byte)i;
+        }
+    }
+
+    public static void validate(String msg, byte[] toByteArr, int length, int fromPos, int toPos) {
+        for(int i = 0 ; i < length; i++) {
+            if (fromByteArr[i + fromPos] != toByteArr[i + toPos]) {
+                System.out.println(msg + "[" + toByteArr.getClass() + "] Result mismtach at i = " + i
+                                + " expected = " + fromByteArr[i + fromPos]
+                                + " actual   = " + toByteArr[i + toPos]
+                                + " fromPos = " + fromPos
+                                + " toPos = " + toPos);
+                throw new Error("Fail");
+            }
+        }
+    }
+
+    public static void testByte(int length, int fromPos, int toPos) {
+        System.arraycopy(fromByteArr, fromPos, toByteArr, toPos, length);
+        validate(" Test ByteArr ", toByteArr, length, fromPos, toPos);
+    }
+
+    public static void main(String [] args) {
+        int base_size = 2621440;
+        Random r = new Random(1024);
+        int [] lengths = {base_size - 1, base_size, base_size + 1, base_size + 63, base_size + 64,
+                                base_size + 65, base_size + 255, base_size + 256, base_size + 257,
+                                base_size + r.nextInt(2048)};
+        setup();
+
+        for (int i = 0 ; i < 20 ; i++ ) {
+            testByte(lengths[i % lengths.length], 0, 0);
+            testByte(lengths[i % lengths.length], 0, 9);
+            testByte(lengths[i % lengths.length], 9, 0);
+            testByte(lengths[i % lengths.length], 9, 9);
+            testByte(lengths[i % lengths.length], r.nextInt(2048) , r.nextInt(2048));
+        }
+    }
+}