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 */
24
25 /**
26 * @test
27 * @bug 6910605
28 * @summary C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used
29 *
30 * @run main/othervm -Xmx64m -XX:+IgnoreUnrecognizedVMOptions -XX:+DeoptimizeALot -XX:+DoEscapeAnalysis -Xbatch -XX:InlineSmallCode=2000 Test
31 *
32 */
33
34 /*
35 * Added InlineSmallCode=2000 to guaranty inlining of StringBuilder::append() to allow scalar replace StringBuilder object.
36 *
37 * original test: gc/gctests/StringGC
38 */
39
40 public class Test {
41 private final String toAdd = "0123456789abcdef";
42 private int maxLength;
43 private static final int numberOfThreads = 8;
44
45 private class StringAdder extends Thread {
46 private String s;
47
48 public void test() {
49 s = s + toAdd;
50 }
51 public void run() {
52 do {
53 test();
54 } while (s.length() < maxLength);
55 }
56 }
57
58 public void test() throws InterruptedException {
59 maxLength = toAdd.length() * 15000/ numberOfThreads;
60 StringAdder[] sa = new StringAdder[numberOfThreads];
61 for (int i = 0; i < numberOfThreads; i++) {
62 sa[i] = new StringAdder();
63 sa[i].start();
64 }
65 for (int i = 0; i < numberOfThreads; i++) {
66 sa[i].join();
67 }
68 }
69
70 public static void main(String[] args) throws InterruptedException {
71 Test t = new Test();
72 t.test();
73 }
74 }
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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 */
24
25 /**
26 * @test
27 * @bug 6910605
28 * @summary C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used
29 *
30 * @run main/othervm -Xmx64m -XX:+IgnoreUnrecognizedVMOptions -XX:+DeoptimizeALot
31 * -XX:+DoEscapeAnalysis -Xbatch -XX:InlineSmallCode=2000
32 * compiler.c2.Test6910605_2
33 */
34
35 package compiler.c2;
36
37 /*
38 * Added InlineSmallCode=2000 to guaranty inlining of StringBuilder::append() to allow scalar replace StringBuilder object.
39 *
40 * original test: gc/gctests/StringGC
41 */
42
43 public class Test6910605_2 {
44 private final String toAdd = "0123456789abcdef";
45 private int maxLength;
46 private static final int numberOfThreads = 8;
47
48 private class StringAdder extends Thread {
49 private String s;
50
51 public void test() {
52 s = s + toAdd;
53 }
54
55 public void run() {
56 do {
57 test();
58 } while (s.length() < maxLength);
59 }
60 }
61
62 public void test() throws InterruptedException {
63 maxLength = toAdd.length() * 15000 / numberOfThreads;
64 StringAdder[] sa = new StringAdder[numberOfThreads];
65 for (int i = 0; i < numberOfThreads; i++) {
66 sa[i] = new StringAdder();
67 sa[i].start();
68 }
69 for (int i = 0; i < numberOfThreads; i++) {
70 sa[i].join();
71 }
72 }
73
74 public static void main(String[] args) throws InterruptedException {
75 Test6910605_2 t = new Test6910605_2();
76 t.test();
77 }
78 }
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