84 lines
2.9 KiB
Java
84 lines
2.9 KiB
Java
|
/*
|
||
|
|
* Copyright (c) 2016, 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
import jdk.test.lib.Asserts;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* @test
|
||
|
|
* @bug 8144212
|
||
|
|
* @summary Check for correct memory flow with the String compress/inflate intrinsics.
|
||
|
|
* @library /testlibrary
|
||
|
|
* @run main TestStringIntrinsicMemoryFlow
|
||
|
|
*/
|
||
|
|
public class TestStringIntrinsicMemoryFlow {
|
||
|
|
|
||
|
|
public static void main(String[] args) {
|
||
|
|
for (int i = 0; i < 100_000; ++i) {
|
||
|
|
String s = "MyString";
|
||
|
|
char[] c = {'M'};
|
||
|
|
char res = testInflate1(s);
|
||
|
|
Asserts.assertEquals(res, 'M', "testInflate1 failed");
|
||
|
|
res = testInflate2(s);
|
||
|
|
Asserts.assertEquals(res, (char)42, "testInflate2 failed");
|
||
|
|
res = testCompress1(c);
|
||
|
|
Asserts.assertEquals(res, 'M', "testCompress1 failed");
|
||
|
|
byte resB = testCompress2(c);
|
||
|
|
Asserts.assertEquals(resB, (byte)42, "testCompress2 failed");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static char testInflate1(String s) {
|
||
|
|
char c[] = new char[1];
|
||
|
|
// Inflate String from byte[] to char[]
|
||
|
|
s.getChars(0, 1, c, 0);
|
||
|
|
// Read char[] memory written by inflate intrinsic
|
||
|
|
return c[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
private static char testInflate2(String s) {
|
||
|
|
char c1[] = new char[1];
|
||
|
|
char c2[] = new char[1];
|
||
|
|
c2[0] = 42;
|
||
|
|
// Inflate String from byte[] to char[]
|
||
|
|
s.getChars(0, 1, c1, 0);
|
||
|
|
// Read char[] memory written before inflation
|
||
|
|
return c2[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
private static char testCompress1(char[] c) {
|
||
|
|
// Compress String from char[] to byte[]
|
||
|
|
String s = new String(c);
|
||
|
|
// Read the memory written by compress intrinsic
|
||
|
|
return s.charAt(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
private static byte testCompress2(char[] c) {
|
||
|
|
byte b1[] = new byte[1];
|
||
|
|
b1[0] = 42;
|
||
|
|
// Compress String from char[] to byte[]
|
||
|
|
new String(c);
|
||
|
|
// Read byte[] memory written before compression
|
||
|
|
return b1[0];
|
||
|
|
}
|
||
|
|
}
|