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 ProcessBuilder pb = ProcessTools.
59 createJavaProcessBuilder(
60 "--add-exports", "jdk.attach/sun.tools.attach=ALL-UNNAMED",
61 "-XX:+UseConcMarkSweepGC", // this will cause MaxNewSize to be FLAG_SET_ERGO
62 "-XX:+UseCodeAging",
63 "-XX:+UseCerealGC", // Should be ignored.
64 "-Djdk.attach.allowAttachSelf",
65 "-cp", System.getProperty("test.class.path"),
66 "CheckOrigin",
67 "-runtests");
68
69 Map<String, String> env = pb.environment();
70 // "UseCMSGC" should be ignored.
71 env.put("_JAVA_OPTIONS", "-XX:+CheckJNICalls -XX:+UseCMSGC");
72 // "UseGOneGC" should be ignored.
73 env.put("JAVA_TOOL_OPTIONS", "-XX:+IgnoreUnrecognizedVMOptions "
74 + "-XX:+PrintVMOptions -XX:+UseGOneGC");
75
76 pb.redirectOutput(ProcessBuilder.Redirect.INHERIT);
77 pb.redirectError(ProcessBuilder.Redirect.INHERIT);
78 Process p = pb.start();
79 int exit = p.waitFor();
80 System.out.println("sub process exit == " + exit);
81 if (exit != 0) {
82 throw new Exception("Unexpected exit code from subprocess == " + exit);
83 }
84 } else {
85 mbean =
86 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
87
88 // set a few more options
89 mbean.setVMOption("HeapDumpOnOutOfMemoryError", "true");
90 setOptionUsingAttach("HeapDumpPath", "/a/sample/path");
91
92 // check the origin field for all the options we set
93
94 // Not set, so should be default
95 checkOrigin("ManagementServer", Origin.DEFAULT);
96 // Set on the command line
97 checkOrigin("UseCodeAging", Origin.VM_CREATION);
98 // Set in _JAVA_OPTIONS
99 checkOrigin("CheckJNICalls", Origin.ENVIRON_VAR);
100 // Set in JAVA_TOOL_OPTIONS
101 checkOrigin("IgnoreUnrecognizedVMOptions", Origin.ENVIRON_VAR);
102 checkOrigin("PrintVMOptions", Origin.ENVIRON_VAR);
103 // Set through j.l.m
104 checkOrigin("HeapDumpOnOutOfMemoryError", Origin.MANAGEMENT);
105 // Should be set by the VM, when we set UseConcMarkSweepGC
106 checkOrigin("MaxNewSize", Origin.ERGONOMIC);
107 // Set using attach
108 checkOrigin("HeapDumpPath", Origin.ATTACH_ON_DEMAND);
109 }
110 }
111
112 private static void checkOrigin(String option, Origin origin) throws Exception
113 {
114 Origin o = mbean.getVMOption(option).getOrigin();
115 if (!o.equals(origin)) {
116 throw new Exception("Option '" + option + "' should have origin '" + origin + "' but had '" + o + "'");
117 }
118 System.out.println("Option '" + option + "' verified origin = '" + origin + "'");
119 }
120
121 // use attach to set a manageable vm option
122 private static void setOptionUsingAttach(String option, String value) throws Exception {
123 HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(ProcessTools.getProcessId()+"");
124 InputStream in = vm.setFlag(option, value);
125 System.out.println("Result from setting '" + option + "' to '" + value + "' using attach:");
126 drain(vm, in);
127 System.out.println("-- end -- ");
128 }
129
130 // Read the stream from the target VM until EOF, print to output, then detach
131 private static void drain(VirtualMachine vm, InputStream in) throws Exception {
132 byte b[] = new byte[256];
133 int n;
134 do {
135 n = in.read(b);
136 if (n > 0) {
137 String s = new String(b, 0, n, "UTF-8");
138 System.out.print(s);
139 }
140 } while (n > 0);
141 in.close();
142 vm.detach();
143 }
144
145 }