/*
* Copyright ( c ) 2011 , 2022 , 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
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*/
import static jdk.test.lib.Asserts.*;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.Platform;
import jdk.test.lib.Utils;
/*
* @ test
* @ bug 7104647 7154822
* @ summary Unit test for jcmd utility . The test will send different diagnostic
* command requests to the current java process .
*
* @ library / test / lib
*
* @ run main / othervm - XX : + UsePerfData TestJcmdSanity
*/
public class TestJcmdSanity {
private static final String TEST_SRC = System.getProperty("test.src" ).trim();
private static final String[] VM_ARGS = new String[] { "-XX:+UsePerfData" };
private static final String JCMD_COMMAND_REGEX = "(\\w|\\.)*" ;
private static final String PERF_COUNTER_REGEX = "(\\w|\\.)*\\=.*" ;
public static void main(String[] args) throws Exception {
testJcmdPidHelp();
testJcmdPidHelpHelp();
testJcmdPid_f();
testJcmdPidPerfCounterPrint();
testJcmdPidBigScript();
testJcmdPidVMinfo();
}
/**
* jcmd - J - XX : + UsePerfData pid help
*/
private static void testJcmdPidHelp() throws Exception {
OutputAnalyzer output = JcmdBase.jcmd(VM_ARGS,
new String[] {"help" });
output.shouldHaveExitValue(0 );
output.shouldNotContain("Exception" );
output.shouldContain(Long .toString(ProcessTools.getProcessId()) + ":" );
matchJcmdCommands(output);
output.shouldContain("For more information about a specific command use 'help <command>'." );
}
/**
* jcmd - J - XX : + UsePerfData pid help help
*/
private static void testJcmdPidHelpHelp() throws Exception {
OutputAnalyzer output = JcmdBase.jcmd(VM_ARGS,
new String[] {"help" , "help" });
output.shouldHaveExitValue(0 );
verifyOutputAgainstFile(output);
}
/**
* jcmd - J - XX : + UsePerfData pid PerfCounter . print
*/
private static void testJcmdPidPerfCounterPrint() throws Exception {
OutputAnalyzer output = JcmdBase.jcmd(VM_ARGS,
new String[] {"PerfCounter.print" });
output.shouldHaveExitValue(0 );
matchPerfCounters(output);
}
/**
* jcmd - J - XX : + UsePerfData pid - f dcmd - script . txt
*/
private static void testJcmdPid_f() throws Exception {
File scrpitFile = new File(TEST_SRC, "dcmd-script.txt" );
OutputAnalyzer output = JcmdBase.jcmd(VM_ARGS,
new String[] {"-f" , scrpitFile.getAbsolutePath()});
output.shouldHaveExitValue(0 );
verifyOutputAgainstFile(output);
}
/**
* Tests that it possible send a file over 1024 bytes large via jcmd - f .
*
* jcmd - J - XX : + UsePerfData pid - f dcmd - big - script . txt
*/
private static void testJcmdPidBigScript() throws Exception {
File scrpitFile = new File(TEST_SRC, "dcmd-big-script.txt" );
OutputAnalyzer output = JcmdBase.jcmd(VM_ARGS,
new String[] {"-f" , scrpitFile.getAbsolutePath()});
output.shouldHaveExitValue(0 );
output.shouldNotContain("Exception" );
output.shouldContain(System.getProperty("java.vm.name" ).trim());
}
/**
* Verifies the listed jcmd commands match a certain pattern .
*
* The output of the jcmd commands should look like :
* VM . uptime
* VM . flags
* VM . system_properties
*
* @ param output The generated output from the jcmd .
* @ throws Exception
*/
private static void matchJcmdCommands(OutputAnalyzer output) {
output.shouldMatchByLine(JCMD_COMMAND_REGEX,
"help" ,
JCMD_COMMAND_REGEX);
}
/**
* Verifies the generated output from the PerfCounter . print command
* matches a certain pattern .
*
* The output of perf counters should look like :
* java . property . java . vm . name = " Java HotSpot ( TM ) 64 - Bit Server VM "
* java . threads . daemon = 7
* sun . rt . javaCommand = " com . sun . javatest . regtest . MainWrapper / tmp / jtreg / jtreg - workdir / classes / sun / tools / jcmd / TestJcmdSanity . jta "
*
* @ param output The generated output from the PerfCounter . print command .
* @ throws Exception
*/
private static void matchPerfCounters(OutputAnalyzer output) {
output.stdoutShouldMatchByLine(PERF_COUNTER_REGEX, null , PERF_COUNTER_REGEX);
output.stderrShouldBeEmptyIgnoreDeprecatedWarnings();
}
private static void verifyOutputAgainstFile(OutputAnalyzer output) throws IOException {
Path path = Paths.get(TEST_SRC, "help_help.out" );
List<String> fileOutput = Files.readAllLines(path);
List<String> outputAsLines = output.asLines();
assertTrue(outputAsLines.containsAll(fileOutput),
"The ouput should contain all content of " + path.toAbsolutePath());
}
/**
* Sanity check for VM . info
*/
private static void testJcmdPidVMinfo() throws Exception {
OutputAnalyzer output = JcmdBase.jcmd(VM_ARGS, new String[] {"VM.info" });
output.shouldHaveExitValue(0 );
output.shouldContain(Long .toString(ProcessTools.getProcessId()) + ":" );
// Should find the signal handler summary (except on Windows):
if (!Platform.isWindows()) {
output.shouldContain("Signal Handlers:" );
// Should not find any of the possible signal handler modification warnings:
output.shouldNotContain(" handler modified!" ); // e.g. Warning: SIGILL handler modified!
output.shouldNotContain("*** Handler was modified!" );
output.shouldNotContain("*** Expected: " ); // e.g. *** Expected: javaSignalHandler in ...
}
}
}
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