| /* |
| * Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8028994 |
| * @author Staffan Larsen |
| * @library /lib/testlibrary |
| * @modules jdk.attach/sun.tools.attach |
| * jdk.management |
| * @build jdk.testlibrary.* |
| * @run main CheckOrigin |
| */ |
| |
| import com.sun.management.HotSpotDiagnosticMXBean; |
| import com.sun.management.VMOption; |
| import com.sun.management.VMOption.Origin; |
| import com.sun.tools.attach.VirtualMachine; |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.io.InputStream; |
| import java.io.PrintWriter; |
| import java.lang.management.ManagementFactory; |
| import java.util.Map; |
| import jdk.testlibrary.ProcessTools; |
| import sun.tools.attach.HotSpotVirtualMachine; |
| |
| public class CheckOrigin { |
| |
| private static HotSpotDiagnosticMXBean mbean; |
| |
| public static void main(String... args) throws Exception { |
| if (args.length == 0) { |
| // start a process that has options set in a number of different ways |
| |
| File flagsFile = File.createTempFile("CheckOriginFlags", null); |
| try (PrintWriter pw = |
| new PrintWriter(new FileWriter(flagsFile))) { |
| pw.println("+PrintSafepointStatistics"); |
| } |
| |
| ProcessBuilder pb = ProcessTools. |
| createJavaProcessBuilder( |
| "--add-exports", "jdk.attach/sun.tools.attach=ALL-UNNAMED", |
| "-XX:+UseConcMarkSweepGC", // this will cause MaxNewSize to be FLAG_SET_ERGO |
| "-XX:+UseCodeAging", |
| "-XX:+UseCerealGC", // Should be ignored. |
| "-XX:Flags=" + flagsFile.getAbsolutePath(), |
| "-Djdk.attach.allowAttachSelf", |
| "-cp", System.getProperty("test.class.path"), |
| "CheckOrigin", |
| "-runtests"); |
| |
| Map<String, String> env = pb.environment(); |
| // "UseCMSGC" should be ignored. |
| env.put("_JAVA_OPTIONS", "-XX:+CheckJNICalls -XX:+UseCMSGC"); |
| // "UseGOneGC" should be ignored. |
| env.put("JAVA_TOOL_OPTIONS", "-XX:+IgnoreUnrecognizedVMOptions " |
| + "-XX:+PrintVMOptions -XX:+UseGOneGC"); |
| |
| pb.redirectOutput(ProcessBuilder.Redirect.INHERIT); |
| pb.redirectError(ProcessBuilder.Redirect.INHERIT); |
| Process p = pb.start(); |
| int exit = p.waitFor(); |
| System.out.println("sub process exit == " + exit); |
| if (exit != 0) { |
| throw new Exception("Unexpected exit code from subprocess == " + exit); |
| } |
| } else { |
| mbean = |
| ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class); |
| |
| // set a few more options |
| mbean.setVMOption("HeapDumpOnOutOfMemoryError", "true"); |
| setOptionUsingAttach("HeapDumpPath", "/a/sample/path"); |
| |
| // check the origin field for all the options we set |
| |
| // Not set, so should be default |
| checkOrigin("ManagementServer", Origin.DEFAULT); |
| // Set on the command line |
| checkOrigin("UseCodeAging", Origin.VM_CREATION); |
| // Set in _JAVA_OPTIONS |
| checkOrigin("CheckJNICalls", Origin.ENVIRON_VAR); |
| // Set in JAVA_TOOL_OPTIONS |
| checkOrigin("IgnoreUnrecognizedVMOptions", Origin.ENVIRON_VAR); |
| checkOrigin("PrintVMOptions", Origin.ENVIRON_VAR); |
| // Set in -XX:Flags file |
| checkOrigin("PrintSafepointStatistics", Origin.CONFIG_FILE); |
| // Set through j.l.m |
| checkOrigin("HeapDumpOnOutOfMemoryError", Origin.MANAGEMENT); |
| // Should be set by the VM, when we set UseConcMarkSweepGC |
| checkOrigin("MaxNewSize", Origin.ERGONOMIC); |
| // Set using attach |
| checkOrigin("HeapDumpPath", Origin.ATTACH_ON_DEMAND); |
| } |
| } |
| |
| private static void checkOrigin(String option, Origin origin) throws Exception |
| { |
| Origin o = mbean.getVMOption(option).getOrigin(); |
| if (!o.equals(origin)) { |
| throw new Exception("Option '" + option + "' should have origin '" + origin + "' but had '" + o + "'"); |
| } |
| System.out.println("Option '" + option + "' verified origin = '" + origin + "'"); |
| } |
| |
| // use attach to set a manageable vm option |
| private static void setOptionUsingAttach(String option, String value) throws Exception { |
| HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(ProcessTools.getProcessId()+""); |
| InputStream in = vm.setFlag(option, value); |
| System.out.println("Result from setting '" + option + "' to '" + value + "' using attach:"); |
| drain(vm, in); |
| System.out.println("-- end -- "); |
| } |
| |
| // Read the stream from the target VM until EOF, print to output, then detach |
| private static void drain(VirtualMachine vm, InputStream in) throws Exception { |
| byte b[] = new byte[256]; |
| int n; |
| do { |
| n = in.read(b); |
| if (n > 0) { |
| String s = new String(b, 0, n, "UTF-8"); |
| System.out.print(s); |
| } |
| } while (n > 0); |
| in.close(); |
| vm.detach(); |
| } |
| |
| } |