1 /*
2 * Copyright (c) 2022, 2024, Oracle and/or its affiliates. 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 */
23
24 /*
25 * @test Loading CDS archived heap objects into ParallelGC
26 * @bug 8274788
27 * @requires vm.cds
28 * @requires vm.gc.Parallel
29 * @requires vm.gc.G1
30 *
31 * @comment don't run this test if any -XX::+Use???GC options are specified, since they will
32 * interfere with the test.
33 * @requires vm.gc == null
34 *
35 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
36 * @compile test-classes/Hello.java
37 * @run driver TestParallelGCWithCDS
38 */
39
40 // Below is exactly the same as above, except:
41 // - requires vm.bits == "64"
42 // - extra argument "false"
43
44 /*
45 * @test Loading CDS archived heap objects into ParallelGC
46 * @bug 8274788 8341371
47 * @requires vm.cds
48 * @requires vm.gc.Parallel
49 * @requires vm.gc.G1
50 * @requires vm.bits == "64"
51 *
52 * @comment don't run this test if any -XX::+Use???GC options are specified, since they will
53 * interfere with the test.
54 * @requires vm.gc == null
55 *
56 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
57 * @compile test-classes/Hello.java
58 * @run driver TestParallelGCWithCDS false
59 */
60 import jdk.test.lib.Platform;
61 import jdk.test.lib.process.OutputAnalyzer;
62
63 public class TestParallelGCWithCDS {
64 public final static String HELLO = "Hello World";
65 static String helloJar;
66 static boolean useCompressedOops = true;
67
68 public static void main(String... args) throws Exception {
69 helloJar = JarBuilder.build("hello", "Hello");
70
71 if (args.length > 0 && args[0].equals("false")) {
72 useCompressedOops = false;
73 }
74
75 // Check if we can use ParallelGC during dump time, or run time, or both.
76 test(false, true);
77 test(true, false);
78 test(true, true);
79
80 // With G1 we usually have 2 heap regions. To increase test coverage, we can have 3 heap regions
81 // by using "-Xmx256m -XX:ObjectAlignmentInBytes=64"
82 if (Platform.is64bit()) test(false, true, true);
83 }
84
85 final static String G1 = "-XX:+UseG1GC";
86 final static String Parallel = "-XX:+UseParallelGC";
87
88 static void test(boolean dumpWithParallel, boolean execWithParallel) throws Exception {
89 test(dumpWithParallel, execWithParallel, false);
90 }
91
92 static void test(boolean dumpWithParallel, boolean execWithParallel, boolean useSmallRegions) throws Exception {
93 String dumpGC = dumpWithParallel ? Parallel : G1;
94 String execGC = execWithParallel ? Parallel : G1;
95 String small1 = useSmallRegions ? "-Xmx256m" : "-showversion";
96 String small2 = useSmallRegions ? "-XX:ObjectAlignmentInBytes=64" : "-showversion";
97 String errMsg = "Cannot use CDS heap data. Selected GC not compatible -XX:-UseCompressedOops";
98 String coops = useCompressedOops ? "-XX:+UseCompressedOops" : "-XX:-UseCompressedOops";
99 OutputAnalyzer out;
100
101 System.out.println("0. Dump with " + dumpGC);
102 out = TestCommon.dump(helloJar,
103 new String[] {"Hello"},
104 dumpGC,
105 small1,
106 small2,
107 coops,
108 "-Xlog:cds");
109 out.shouldContain("Dumping shared data to file:");
110 out.shouldHaveExitValue(0);
111
112 System.out.println("1. Exec with " + execGC);
113 out = TestCommon.exec(helloJar,
114 execGC,
115 small1,
116 small2,
117 coops,
118 "-Xlog:cds",
119 "Hello");
120 out.shouldContain(HELLO);
121 out.shouldNotContain(errMsg);
122 out.shouldHaveExitValue(0);
123
124 int n = 2;
125 if (!dumpWithParallel && execWithParallel) {
126 // We dumped with G1, so we have an archived heap. At exec time, try to load them into
127 // a small ParallelGC heap that may be too small.
128 String[] sizes = {
129 "4m", // usually this will success load the archived heap
130 "2m", // usually this will fail to load the archived heap, but app can launch
131 // or fail with "GC triggered before VM initialization completed"
132 "1m" // usually this will cause VM launch to fail with "Too small maximum heap"
133 };
134 for (String sz : sizes) {
135 String xmx = "-Xmx" + sz;
136 System.out.println("=======\n" + n + ". Exec with " + execGC + " " + xmx);
137 out = TestCommon.exec(helloJar,
138 execGC,
139 small1,
140 small2,
141 xmx,
142 coops,
143 "-Xlog:cds",
144 "Hello");
145 if (out.getExitValue() == 0) {
146 out.shouldContain(HELLO);
147 out.shouldNotContain(errMsg);
148 } else {
149 String pattern = "((Too small maximum heap)" +
150 "|(GC triggered before VM initialization completed)" +
151 "|(CDS archive has aot-linked classes but the archived heap objects cannot be loaded)" +
152 "|(Initial heap size set to a larger value than the maximum heap size)" +
153 "|(java.lang.OutOfMemoryError)" +
154 "|(Error: A JNI error has occurred, please check your installation and try again))";
155 out.shouldMatch(pattern);
156 out.shouldNotHaveFatalError();
157 }
158 n++;
159 }
160 }
161 }
162 }