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 * @requires vm.opt.final.UseCompactObjectHeaders == false
31 *
32 * @comment don't run this test if any -XX::+Use???GC options are specified, since they will
33 * interfere with the test.
34 * @requires vm.gc == null
35 *
36 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
37 * @compile test-classes/Hello.java
38 * @run driver TestParallelGCWithCDS
39 */
40
41 // Below is exactly the same as above, except:
42 // - requires vm.bits == "64"
43 // - extra argument "false"
44
45 /*
46 * @test Loading CDS archived heap objects into ParallelGC
47 * @bug 8274788 8341371
48 * @requires vm.cds
49 * @requires vm.gc.Parallel
50 * @requires vm.gc.G1
51 * @requires vm.bits == "64"
52 * @requires vm.opt.final.UseCompactObjectHeaders == false
53 *
54 * @comment don't run this test if any -XX::+Use???GC options are specified, since they will
55 * interfere with the test.
56 * @requires vm.gc == null
57 *
58 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
59 * @compile test-classes/Hello.java
60 * @run driver TestParallelGCWithCDS false
61 */
62 import jdk.test.lib.Platform;
63 import jdk.test.lib.process.OutputAnalyzer;
64
65 public class TestParallelGCWithCDS {
66 public final static String HELLO = "Hello World";
67 static String helloJar;
68 static boolean useCompressedOops = true;
69
70 public static void main(String... args) throws Exception {
71 helloJar = JarBuilder.build("hello", "Hello");
72
73 if (args.length > 0 && args[0].equals("false")) {
74 useCompressedOops = false;
75 }
76
77 // Check if we can use ParallelGC during dump time, or run time, or both.
78 test(false, true);
79 test(true, false);
80 test(true, true);
81
82 // With G1 we usually have 2 heap regions. To increase test coverage, we can have 3 heap regions
83 // by using "-Xmx256m -XX:ObjectAlignmentInBytes=64"
84 if (Platform.is64bit()) test(false, true, true);
85 }
86
87 final static String G1 = "-XX:+UseG1GC";
88 final static String Parallel = "-XX:+UseParallelGC";
89
90 static void test(boolean dumpWithParallel, boolean execWithParallel) throws Exception {
91 test(dumpWithParallel, execWithParallel, false);
92 }
93
94 static void test(boolean dumpWithParallel, boolean execWithParallel, boolean useSmallRegions) throws Exception {
95 String dumpGC = dumpWithParallel ? Parallel : G1;
96 String execGC = execWithParallel ? Parallel : G1;
97 String small1 = useSmallRegions ? "-Xmx256m" : "-showversion";
98 String small2 = useSmallRegions ? "-XX:ObjectAlignmentInBytes=64" : "-showversion";
99 String errMsg = "Cannot use CDS heap data. Selected GC not compatible -XX:-UseCompressedOops";
100 String coops = useCompressedOops ? "-XX:+UseCompressedOops" : "-XX:-UseCompressedOops";
101 OutputAnalyzer out;
102
103 System.out.println("0. Dump with " + dumpGC);
104 out = TestCommon.dump(helloJar,
105 new String[] {"Hello"},
106 dumpGC,
107 small1,
108 small2,
109 coops,
110 "-Xlog:cds");
111 out.shouldContain("Dumping shared data to file:");
112 out.shouldHaveExitValue(0);
113
114 System.out.println("1. Exec with " + execGC);
115 out = TestCommon.exec(helloJar,
116 execGC,
117 small1,
118 small2,
119 coops,
120 "-Xlog:cds",
121 "Hello");
122 out.shouldContain(HELLO);
123 out.shouldNotContain(errMsg);
124 out.shouldHaveExitValue(0);
125
126 int n = 2;
127 if (!dumpWithParallel && execWithParallel) {
128 // We dumped with G1, so we have an archived heap. At exec time, try to load them into
129 // a small ParallelGC heap that may be too small.
130 String[] sizes = {
131 "4m", // usually this will success load the archived heap
132 "2m", // usually this will fail to load the archived heap, but app can launch
133 // or fail with "GC triggered before VM initialization completed"
134 "1m" // usually this will cause VM launch to fail with "Too small maximum heap"
135 };
136 for (String sz : sizes) {
137 String xmx = "-Xmx" + sz;
138 System.out.println("=======\n" + n + ". Exec with " + execGC + " " + xmx);
139 out = TestCommon.exec(helloJar,
140 execGC,
141 small1,
142 small2,
143 xmx,
144 coops,
145 "-Xlog:cds",
146 "Hello");
147 if (out.getExitValue() == 0) {
148 out.shouldContain(HELLO);
149 out.shouldNotContain(errMsg);
150 } else {
151 String pattern = "((Too small maximum heap)" +
152 "|(GC triggered before VM initialization completed)" +
153 "|(CDS archive has aot-linked classes but the archived heap objects cannot be loaded)" +
154 "|(Initial heap size set to a larger value than the maximum heap size)" +
155 "|(java.lang.OutOfMemoryError)" +
156 "|(Error: A JNI error has occurred, please check your installation and try again))";
157 out.shouldMatch(pattern);
158 out.shouldNotHaveFatalError();
159 }
160 n++;
161 }
162 }
163 }
164 }