test/jdk/java/nio/Buffer/AllocateDirectInit.java
changeset 47216 71c04702a3d5
parent 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/nio/Buffer/AllocateDirectInit.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2001, 2007, 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 4490253 6535542
+ * @summary Verify that newly allocated direct buffers are initialized.
+ */
+
+import java.nio.ByteBuffer;
+
+public class AllocateDirectInit {
+    public static void main(String [] args){
+        for (int i = 0; i < 1024; i++) {
+            ByteBuffer bb = ByteBuffer.allocateDirect(1024);
+//          printByteBuffer(bb);
+            for (bb.position(0); bb.position() < bb.limit(); ) {
+                if ((bb.get() & 0xff) != 0)
+                    throw new RuntimeException("uninitialized buffer, position = "
+                                               + bb.position());
+            }
+        }
+    }
+
+    private static void printByteBuffer(ByteBuffer bb) {
+        System.out.print("byte [");
+        for (bb.position(0); bb.position() < bb.limit(); )
+            System.out.print(" " + Integer.toHexString(bb.get() & 0xff));
+        System.out.println(" ]");
+    }
+}