1 /*
2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
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 *
58 * TestStringInternCleanup
59 *
60 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
61 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
62 * -XX:+ShenandoahVerify
63 * TestStringInternCleanup
64 *
65 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
66 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
67 * TestStringInternCleanup
68 *
69 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
70 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
71 * TestStringInternCleanup
72 *
73 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:-ClassUnloadingWithConcurrentMark
74 * -XX:+UseShenandoahGC
75 * TestStringInternCleanup
76 */
77
78 public class TestStringInternCleanup {
79
80 static final int COUNT = 1_000_000;
81 static final int WINDOW = 1_000;
82
83 static final String[] reachable = new String[WINDOW];
84
85 public static void main(String[] args) throws Exception {
86 int rIdx = 0;
87 for (int c = 0; c < COUNT; c++) {
88 reachable[rIdx] = ("LargeInternedString" + c).intern();
89 rIdx++;
90 if (rIdx >= WINDOW) {
91 rIdx = 0;
92 }
93 }
94 }
95
96 }
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1 /*
2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
59 * TestStringInternCleanup
60 *
61 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
62 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
63 * -XX:+ShenandoahVerify
64 * TestStringInternCleanup
65 *
66 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
67 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
68 * TestStringInternCleanup
69 *
70 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
71 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
72 * TestStringInternCleanup
73 *
74 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:-ClassUnloadingWithConcurrentMark
75 * -XX:+UseShenandoahGC
76 * TestStringInternCleanup
77 */
78
79 /*
80 * @test id=generational
81 * @summary Check that Shenandoah cleans up interned strings
82 * @requires vm.gc.Shenandoah
83 *
84 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
85 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
86 * -XX:+ShenandoahVerify
87 * TestStringInternCleanup
88 *
89 * @run main/othervm -Xmx64m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ClassUnloadingWithConcurrentMark
90 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
91 * TestStringInternCleanup
92 */
93
94
95 public class TestStringInternCleanup {
96
97 static final int COUNT = 1_000_000;
98 static final int WINDOW = 1_000;
99
100 static final String[] reachable = new String[WINDOW];
101
102 public static void main(String[] args) throws Exception {
103 int rIdx = 0;
104 for (int c = 0; c < COUNT; c++) {
105 reachable[rIdx] = ("LargeInternedString" + c).intern();
106 rIdx++;
107 if (rIdx >= WINDOW) {
108 rIdx = 0;
109 }
110 }
111 }
112
113 }
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