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 /lib/testlibrary
31 * @modules jdk.attach/sun.tools.attach
32 * jdk.management
33 * @build jdk.testlibrary.*
34 * @run main CheckOrigin
35 */
36
37 import com.sun.management.HotSpotDiagnosticMXBean;
38 import com.sun.management.VMOption;
39 import com.sun.management.VMOption.Origin;
40 import com.sun.tools.attach.VirtualMachine;
41 import java.io.File;
42 import java.io.FileWriter;
43 import java.io.InputStream;
44 import java.io.PrintWriter;
45 import java.lang.management.ManagementFactory;
46 import java.util.Map;
47 import jdk.testlibrary.ProcessTools;
48 import sun.tools.attach.HotSpotVirtualMachine;
49
50 public class CheckOrigin {
51
52 private static HotSpotDiagnosticMXBean mbean;
53
54 public static void main(String... args) throws Exception {
55 if (args.length == 0) {
56 // start a process that has options set in a number of different ways
57
58 File flagsFile = File.createTempFile("CheckOriginFlags", null);
59 try (PrintWriter pw =
60 new PrintWriter(new FileWriter(flagsFile))) {
61 pw.println("+PrintVMQWaitTime");
62 }
63
64 ProcessBuilder pb = ProcessTools.
65 createJavaProcessBuilder(
66 "--add-exports", "jdk.attach/sun.tools.attach=ALL-UNNAMED",
67 "-XX:+UseConcMarkSweepGC", // this will cause MaxNewSize to be FLAG_SET_ERGO
68 "-XX:+UseCodeAging",
69 "-XX:+UseCerealGC", // Should be ignored.
70 "-XX:Flags=" + flagsFile.getAbsolutePath(),
71 "-Djdk.attach.allowAttachSelf",
72 "-cp", System.getProperty("test.class.path"),
73 "CheckOrigin",
74 "-runtests");
75
76 Map<String, String> env = pb.environment();
77 // "UseCMSGC" should be ignored.
78 env.put("_JAVA_OPTIONS", "-XX:+CheckJNICalls -XX:+UseCMSGC");
79 // "UseGOneGC" should be ignored.
80 env.put("JAVA_TOOL_OPTIONS", "-XX:+IgnoreUnrecognizedVMOptions "
81 + "-XX:+PrintVMOptions -XX:+UseGOneGC");
82
83 pb.redirectOutput(ProcessBuilder.Redirect.INHERIT);
84 pb.redirectError(ProcessBuilder.Redirect.INHERIT);
85 Process p = pb.start();
86 int exit = p.waitFor();
87 System.out.println("sub process exit == " + exit);
88 if (exit != 0) {
89 throw new Exception("Unexpected exit code from subprocess == " + exit);
90 }
91 } else {
92 mbean =
93 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
94
95 // set a few more options
96 mbean.setVMOption("HeapDumpOnOutOfMemoryError", "true");
97 setOptionUsingAttach("HeapDumpPath", "/a/sample/path");
98
99 // check the origin field for all the options we set
100
101 // Not set, so should be default
102 checkOrigin("ManagementServer", Origin.DEFAULT);
103 // Set on the command line
104 checkOrigin("UseCodeAging", Origin.VM_CREATION);
105 // Set in _JAVA_OPTIONS
106 checkOrigin("CheckJNICalls", Origin.ENVIRON_VAR);
107 // Set in JAVA_TOOL_OPTIONS
108 checkOrigin("IgnoreUnrecognizedVMOptions", Origin.ENVIRON_VAR);
109 checkOrigin("PrintVMOptions", Origin.ENVIRON_VAR);
110 // Set in -XX:Flags file
111 checkOrigin("PrintVMQWaitTime", Origin.CONFIG_FILE);
112 // Set through j.l.m
113 checkOrigin("HeapDumpOnOutOfMemoryError", Origin.MANAGEMENT);
114 // Should be set by the VM, when we set UseConcMarkSweepGC
115 checkOrigin("MaxNewSize", Origin.ERGONOMIC);
116 // Set using attach
117 checkOrigin("HeapDumpPath", Origin.ATTACH_ON_DEMAND);
118 }
119 }
120
121 private static void checkOrigin(String option, Origin origin) throws Exception
122 {
123 Origin o = mbean.getVMOption(option).getOrigin();
124 if (!o.equals(origin)) {
125 throw new Exception("Option '" + option + "' should have origin '" + origin + "' but had '" + o + "'");
126 }
127 System.out.println("Option '" + option + "' verified origin = '" + origin + "'");
128 }
129
130 // use attach to set a manageable vm option
131 private static void setOptionUsingAttach(String option, String value) throws Exception {
132 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(ProcessTools.getProcessId()+"");
133 InputStream in = vm.setFlag(option, value);
134 System.out.println("Result from setting '" + option + "' to '" + value + "' using attach:");
135 drain(vm, in);
136 System.out.println("-- end -- ");
137 }
138
139 // Read the stream from the target VM until EOF, print to output, then detach
140 private static void drain(VirtualMachine vm, InputStream in) throws Exception {
141 byte b[] = new byte[256];
142 int n;
143 do {
144 n = in.read(b);
145 if (n > 0) {
146 String s = new String(b, 0, n, "UTF-8");
147 System.out.print(s);
148 }
149 } while (n > 0);
150 in.close();
151 vm.detach();
152 }
153
154 }