| /* |
| * Copyright (c) 2015, 2016, 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. |
| */ |
| |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.dcmd.CommandExecutor; |
| import jdk.test.lib.dcmd.JMXExecutor; |
| import org.testng.annotations.Test; |
| import static org.testng.Assert.*; |
| |
| /* |
| * @test |
| * @bug 8054890 |
| * @summary Test of VM.set_flag diagnostic command |
| * @modules java.base/jdk.internal.misc |
| * @library /test/lib |
| * @run testng SetVMFlagTest |
| */ |
| |
| public class SetVMFlagTest { |
| private static final String MANAGEABLE_PATTERN = "\\s*bool\\s+(\\S+)\\s+[\\:]?=\\s+" + |
| "(.*?)\\s+\\{manageable\\}"; |
| private static final String IMMUTABLE_PATTERN = "\\s*uintx\\s+(\\S+)\\s+[\\:]?=\\s+" + |
| "(.*?)\\s+\\{product\\}"; |
| |
| public void run(CommandExecutor executor) { |
| setMutableFlag(executor); |
| setMutableFlagWithInvalidValue(executor); |
| setImmutableFlag(executor); |
| setNonExistingFlag(executor); |
| } |
| |
| @Test |
| public void jmx() { |
| run(new JMXExecutor()); |
| } |
| |
| private void setMutableFlagInternal(CommandExecutor executor, String flag, |
| boolean val, boolean isNumeric) { |
| String strFlagVal; |
| if (isNumeric) { |
| strFlagVal = val ? "1" : "0"; |
| } else { |
| strFlagVal = val ? "true" : "false"; |
| } |
| |
| OutputAnalyzer out = executor.execute("VM.set_flag " + flag + " " + strFlagVal); |
| out.stderrShouldBeEmpty(); |
| |
| out = getAllFlags(executor); |
| |
| String newFlagVal = out.firstMatch(MANAGEABLE_PATTERN.replace("(\\S+)", flag), 1); |
| |
| assertNotEquals(newFlagVal, val ? "1" : "0"); |
| } |
| |
| private void setMutableFlag(CommandExecutor executor) { |
| OutputAnalyzer out = getAllFlags(executor); |
| String flagName = out.firstMatch(MANAGEABLE_PATTERN, 1); |
| String flagVal = out.firstMatch(MANAGEABLE_PATTERN, 2); |
| |
| System.out.println("### Setting a mutable flag '" + flagName + "'"); |
| |
| if (flagVal == null) { |
| System.err.println(out.getOutput()); |
| throw new Error("Can not find a boolean manageable flag"); |
| } |
| |
| Boolean blnVal = Boolean.parseBoolean(flagVal); |
| setMutableFlagInternal(executor, flagName, !blnVal, true); |
| setMutableFlagInternal(executor, flagName, blnVal, false); |
| } |
| |
| private void setMutableFlagWithInvalidValue(CommandExecutor executor) { |
| OutputAnalyzer out = getAllFlags(executor); |
| String flagName = out.firstMatch(MANAGEABLE_PATTERN, 1); |
| String flagVal = out.firstMatch(MANAGEABLE_PATTERN, 2); |
| |
| System.out.println("### Setting a mutable flag '" + flagName + "' to an invalid value"); |
| |
| if (flagVal == null) { |
| System.err.println(out.getOutput()); |
| throw new Error("Can not find a boolean manageable flag"); |
| } |
| |
| // a boolean flag accepts only 0/1 as its value |
| out = executor.execute("VM.set_flag " + flagName + " unexpected_value"); |
| out.stderrShouldBeEmpty(); |
| out.stdoutShouldContain("flag value must be a boolean (1/0 or true/false)"); |
| |
| out = getAllFlags(executor); |
| |
| String newFlagVal = out.firstMatch(MANAGEABLE_PATTERN.replace("(\\S+)", flagName), 1); |
| |
| assertEquals(newFlagVal, flagVal); |
| } |
| |
| private void setImmutableFlag(CommandExecutor executor) { |
| OutputAnalyzer out = getAllFlags(executor); |
| String flagName = out.firstMatch(IMMUTABLE_PATTERN, 1); |
| String flagVal = out.firstMatch(IMMUTABLE_PATTERN, 2); |
| |
| System.out.println("### Setting an immutable flag '" + flagName + "'"); |
| |
| if (flagVal == null) { |
| System.err.println(out.getOutput()); |
| throw new Error("Can not find an immutable uintx flag"); |
| } |
| |
| Long numVal = Long.parseLong(flagVal); |
| |
| out = executor.execute("VM.set_flag " + flagName + " " + (numVal + 1)); |
| out.stderrShouldBeEmpty(); |
| out.stdoutShouldContain("only 'writeable' flags can be set"); |
| |
| out = getAllFlags(executor); |
| |
| String newFlagVal = out.firstMatch(IMMUTABLE_PATTERN.replace("(\\S+)", flagName), 1); |
| |
| assertEquals(newFlagVal, flagVal); |
| } |
| |
| private void setNonExistingFlag(CommandExecutor executor) { |
| String unknownFlag = "ThisIsUnknownFlag"; |
| System.out.println("### Setting a non-existing flag '" + unknownFlag + "'"); |
| OutputAnalyzer out = executor.execute("VM.set_flag " + unknownFlag + " 1"); |
| out.stderrShouldBeEmpty(); |
| out.stdoutShouldContain("flag " + unknownFlag + " does not exist"); |
| } |
| |
| private OutputAnalyzer getAllFlags(CommandExecutor executor) { |
| return executor.execute("VM.flags -all", true); |
| } |
| } |