1 /*
2 * Copyright (c) 2013, 2018, 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
26 * @bug 8028994
27 * @author Staffan Larsen
28 * @comment Graal does not support CMS
29 * @requires !vm.graal.enabled
30 * @library /test/lib
31 * @modules jdk.attach/sun.tools.attach
32 * jdk.management
33 * @run main CheckOrigin
34 */
35
36 import com.sun.management.HotSpotDiagnosticMXBean;
37 import com.sun.management.VMOption;
38 import com.sun.management.VMOption.Origin;
39 import com.sun.tools.attach.VirtualMachine;
40 import java.io.File;
41 import java.io.FileWriter;
42 import java.io.InputStream;
43 import java.io.PrintWriter;
44 import java.lang.management.ManagementFactory;
45 import java.util.Map;
46 import jdk.test.lib.process.ProcessTools;
47 import sun.tools.attach.HotSpotVirtualMachine;
48
49 public class CheckOrigin {
50
51 private static HotSpotDiagnosticMXBean mbean;
52
53 public static void main(String... args) throws Exception {
54 if (args.length == 0) {
55 // start a process that has options set in a number of different ways
56
57 File flagsFile = File.createTempFile("CheckOriginFlags", null);
58 try (PrintWriter pw =
59 new PrintWriter(new FileWriter(flagsFile))) {
60 pw.println("+PrintVMQWaitTime");
61 }
62
63 ProcessBuilder pb = ProcessTools.
64 createJavaProcessBuilder(
65 "--add-exports", "jdk.attach/sun.tools.attach=ALL-UNNAMED",
66 "-XX:+UseConcMarkSweepGC", // this will cause MaxNewSize to be FLAG_SET_ERGO
67 "-XX:+UseCodeAging",
68 "-XX:+UseCerealGC", // Should be ignored.
69 "-XX:Flags=" + flagsFile.getAbsolutePath(),
70 "-Djdk.attach.allowAttachSelf",
71 "-cp", System.getProperty("test.class.path"),
72 "CheckOrigin",
73 "-runtests");
74
75 Map<String, String> env = pb.environment();
76 // "UseCMSGC" should be ignored.
77 env.put("_JAVA_OPTIONS", "-XX:+CheckJNICalls -XX:+UseCMSGC");
78 // "UseGOneGC" should be ignored.
79 env.put("JAVA_TOOL_OPTIONS", "-XX:+IgnoreUnrecognizedVMOptions "
80 + "-XX:+PrintVMOptions -XX:+UseGOneGC");
81
82 pb.redirectOutput(ProcessBuilder.Redirect.INHERIT);
83 pb.redirectError(ProcessBuilder.Redirect.INHERIT);
84 Process p = pb.start();
85 int exit = p.waitFor();
86 System.out.println("sub process exit == " + exit);
87 if (exit != 0) {
88 throw new Exception("Unexpected exit code from subprocess == " + exit);
89 }
90 } else {
91 mbean =
92 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
93
94 // set a few more options
95 mbean.setVMOption("HeapDumpOnOutOfMemoryError", "true");
96 setOptionUsingAttach("HeapDumpPath", "/a/sample/path");
97
98 // check the origin field for all the options we set
99
100 // Not set, so should be default
101 checkOrigin("ManagementServer", Origin.DEFAULT);
102 // Set on the command line
103 checkOrigin("UseCodeAging", Origin.VM_CREATION);
104 // Set in _JAVA_OPTIONS
105 checkOrigin("CheckJNICalls", Origin.ENVIRON_VAR);
106 // Set in JAVA_TOOL_OPTIONS
107 checkOrigin("IgnoreUnrecognizedVMOptions", Origin.ENVIRON_VAR);
108 checkOrigin("PrintVMOptions", Origin.ENVIRON_VAR);
109 // Set in -XX:Flags file
110 checkOrigin("PrintVMQWaitTime", Origin.CONFIG_FILE);
111 // Set through j.l.m
112 checkOrigin("HeapDumpOnOutOfMemoryError", Origin.MANAGEMENT);
113 // Should be set by the VM, when we set UseConcMarkSweepGC
114 checkOrigin("MaxNewSize", Origin.ERGONOMIC);
115 // Set using attach
116 checkOrigin("HeapDumpPath", Origin.ATTACH_ON_DEMAND);
117 }
118 }
119
120 private static void checkOrigin(String option, Origin origin) throws Exception
121 {
122 Origin o = mbean.getVMOption(option).getOrigin();
123 if (!o.equals(origin)) {
124 throw new Exception("Option '" + option + "' should have origin '" + origin + "' but had '" + o + "'");
125 }
126 System.out.println("Option '" + option + "' verified origin = '" + origin + "'");
127 }
128
129 // use attach to set a manageable vm option
130 private static void setOptionUsingAttach(String option, String value) throws Exception {
131 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(ProcessTools.getProcessId()+"");
132 InputStream in = vm.setFlag(option, value);
133 System.out.println("Result from setting '" + option + "' to '" + value + "' using attach:");
134 drain(vm, in);
135 System.out.println("-- end -- ");
136 }
137
138 // Read the stream from the target VM until EOF, print to output, then detach
139 private static void drain(VirtualMachine vm, InputStream in) throws Exception {
140 byte b[] = new byte[256];
141 int n;
142 do {
143 n = in.read(b);
144 if (n > 0) {
145 String s = new String(b, 0, n, "UTF-8");
146 System.out.print(s);
147 }
148 } while (n > 0);
149 in.close();
150 vm.detach();
151 }
152
153 }