--- /dev/null 2017-04-04 09:35:08.500003702 -0700 +++ new/test/lib/jdk/test/lib/cds/CDSTestUtils.java 2017-04-13 19:29:58.847926433 -0700 @@ -0,0 +1,381 @@ +/* + * Copyright (c) 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. + */ +package jdk.test.lib.cds; + +import java.io.IOException; +import java.io.File; +import java.io.FileOutputStream; +import java.io.PrintStream; +import java.util.ArrayList; +import jdk.test.lib.Utils; +import jdk.test.lib.process.OutputAnalyzer; +import jdk.test.lib.process.ProcessTools; + + +// This class contains common test utilities for testing CDS +public class CDSTestUtils { + // Specify this property to copy sdandard output of the child test process to + // the parent/main stdout of the test. + // By default such output is logged into a file, but not copied into the main stdout + // to avoid excessive log pollution. See executeAndLog() for details + public static final boolean CopyChildStdoutToMainStdout = + Boolean.getBoolean("test.cds.copy.child.stdout"); + + // This property is passed to child test processes + public static final String TestTimeoutFactor = System.getProperty("test.timeout.factor", "1.0"); + + public static final String UnableToMapMsg = + "Unable to map shared archive: test did not complete; assumed PASS"; + + // Create bootstrap CDS archive, + // use extra JVM command line args as a prefix. + // For CDS tests specifying prefix makes more sense than specifying suffix, since + // normally there are no classes or arguments to classes, just "-version" + // To specify suffix explicitly use CDSOptions.addSuffix() + public static OutputAnalyzer createArchive(String... cliPrefix) + throws Exception { + return createArchive((new CDSOptions()).addPrefix(cliPrefix)); + } + + // Create bootstrap CDS archive + public static OutputAnalyzer createArchive(CDSOptions opts) + throws Exception { + + ArrayList cmd = new ArrayList(); + + for (String p : opts.prefix) cmd.add(p); + + cmd.add("-Xshare:dump"); + cmd.add("-XX:+PrintSharedSpaces"); + cmd.add("-XX:+UnlockDiagnosticVMOptions"); + if (opts.archiveName == null) + opts.archiveName = getDefaultArchiveName(); + cmd.add("-XX:SharedArchiveFile=./" + opts.archiveName); + + for (String s : opts.suffix) cmd.add(s); + + String[] cmdLine = cmd.toArray(new String[cmd.size()]); + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, cmdLine); + return executeAndLog(pb, "dump"); + } + + + // check result of 'dump-the-archive' operation, that is "-Xshare:dump" + public static OutputAnalyzer checkDump(OutputAnalyzer output, String... extraMatches) + throws Exception { + + output.shouldContain("Loading classes to share"); + output.shouldHaveExitValue(0); + + for (String match : extraMatches) { + output.shouldContain(match); + } + + return output; + } + + + // A commonly used convenience methods to create an archive and check the results + // Creates an archive and checks for errors + public static OutputAnalyzer createArchiveAndCheck(CDSOptions opts) + throws Exception { + return checkDump(createArchive(opts)); + } + + + public static OutputAnalyzer createArchiveAndCheck(String... cliPrefix) + throws Exception { + return checkDump(createArchive(cliPrefix)); + } + + + // This method should be used to check the output of child VM for common exceptions. + // Most of CDS tests deal with child VM processes for creating and using the archive. + // However exceptions that occur in the child process do not automatically propagate + // to the parent process. This mechanism aims to improve the propagation + // of exceptions and common errors. + // Exception e argument - an exception to be re-thrown if none of the common + // exceptions match. Pass null if you wish not to re-throw any exception. + public static void checkCommonExecExceptions(OutputAnalyzer output, Exception e) + throws Exception { + if (output.getStdout().contains("http://bugreport.java.com/bugreport/crash.jsp")) { + throw new RuntimeException("Hotspot crashed"); + } + if (output.getStdout().contains("TEST FAILED")) { + throw new RuntimeException("Test Failed"); + } + if (output.getOutput().contains("shared class paths mismatch")) { + throw new RuntimeException("shared class paths mismatch"); + } + if (output.getOutput().contains("Unable to unmap shared space")) { + throw new RuntimeException("Unable to unmap shared space"); + } + + // Special case -- sometimes Xshare:on fails because it failed to map + // at given address. This behavior is platform-specific, machine config-specific + // and can be random (see ASLR). + if (isUnableToMap(output)) { + System.out.println(UnableToMapMsg); + return; + } + + if (e != null) + throw e; + } + + + // Check the output for indication that mapping of the archive failed. + // Performance note: this check seems to be rather costly - searching the entire + // output stream of a child process for multiple strings. However, it is necessary + // to detect this condition, a failure to map an archive, since this is not a real + // failure of the test or VM operation, and results in a test being "skipped". + // Suggestions to improve: + // 1. VM can designate a special exit code for such condition. + // 2. VM can print a single distinct string indicating failure to map an archive, + // instead of utilizing multiple messages. + // These are suggestions to improve testibility of the VM. However, implementing them + // could also improve usability in the field. + public static boolean isUnableToMap(OutputAnalyzer output) { + String outStr = output.getOutput(); + if ((output.getExitValue() == 1) && ( + outStr.contains("Unable to reserve shared space at required address") || + outStr.contains("Unable to map ReadOnly shared space at required address") || + outStr.contains("Unable to map ReadWrite shared space at required address") || + outStr.contains("Unable to map MiscData shared space at required address") || + outStr.contains("Unable to map MiscCode shared space at required address") || + outStr.contains("Unable to map shared string space at required address") || + outStr.contains("Could not allocate metaspace at a compatible address") || + outStr.contains("Unable to allocate shared string space: range is not within java heap") )) + { + return true; + } + + return false; + } + + + // Execute JVM with CDS archive, specify command line args suffix + public static OutputAnalyzer runWithArchive(String... cliPrefix) + throws Exception { + + return runWithArchive( (new CDSOptions()) + .setArchiveName(getDefaultArchiveName()) + .addPrefix(cliPrefix) ); + } + + + // Execute JVM with CDS archive, specify CDSOptions + public static OutputAnalyzer runWithArchive(CDSOptions opts) + throws Exception { + + ArrayList cmd = new ArrayList(); + + for (String p : opts.prefix) cmd.add(p); + + cmd.add("-Xshare:" + opts.xShareMode); + cmd.add("-XX:+UnlockDiagnosticVMOptions"); + cmd.add("-Dtest.timeout.factor=" + TestTimeoutFactor); + + if (opts.archiveName == null) + opts.archiveName = getDefaultArchiveName(); + cmd.add("-XX:SharedArchiveFile=" + opts.archiveName); + + if (opts.useVersion) + cmd.add("-version"); + + for (String s : opts.suffix) cmd.add(s); + + String[] cmdLine = cmd.toArray(new String[cmd.size()]); + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, cmdLine); + return executeAndLog(pb, "exec"); + } + + + // A commonly used convenience methods to create an archive and check the results + // Creates an archive and checks for errors + public static OutputAnalyzer runWithArchiveAndCheck(CDSOptions opts) throws Exception { + return checkExec(runWithArchive(opts)); + } + + + public static OutputAnalyzer runWithArchiveAndCheck(String... cliPrefix) throws Exception { + return checkExec(runWithArchive(cliPrefix)); + } + + + public static OutputAnalyzer checkExec(OutputAnalyzer output, + String... extraMatches) throws Exception { + CDSOptions opts = new CDSOptions(); + return checkExec(output, opts, extraMatches); + } + + + // check result of 'exec' operation, that is when JVM is run using the archive + public static OutputAnalyzer checkExec(OutputAnalyzer output, CDSOptions opts, + String... extraMatches) throws Exception { + try { + if ("on".equals(opts.xShareMode)) { + output.shouldContain("sharing"); + } + output.shouldHaveExitValue(0); + } catch (RuntimeException e) { + checkCommonExecExceptions(output, e); + return output; + } + + checkExtraMatches(output, extraMatches); + return output; + } + + + public static OutputAnalyzer checkExecExpectError(OutputAnalyzer output, + int expectedExitValue, + String... extraMatches) throws Exception { + if (isUnableToMap(output)) { + System.out.println(UnableToMapMsg); + return output; + } + + output.shouldHaveExitValue(expectedExitValue); + checkExtraMatches(output, extraMatches); + return output; + } + + public static OutputAnalyzer checkExtraMatches(OutputAnalyzer output, + String... extraMatches) throws Exception { + for (String match : extraMatches) { + output.shouldContain(match); + } + return output; + } + + + // get the file object for the test artifact + public static File getTestArtifact(String name, boolean checkExistence) { + File dir = new File(System.getProperty("test.classes", ".")); + File file = new File(dir, name); + + if (checkExistence && !file.exists()) { + throw new RuntimeException("Cannot find " + file.getPath()); + } + + return file; + } + + + // create file containing the specified class list + public static File makeClassList(String classes[]) + throws Exception { + return makeClassList(getTestName() + "-", classes); + } + + // create file containing the specified class list + public static File makeClassList(String testCaseName, String classes[]) + throws Exception { + + File classList = getTestArtifact(testCaseName + "test.classlist", false); + FileOutputStream fos = new FileOutputStream(classList); + PrintStream ps = new PrintStream(fos); + + addToClassList(ps, classes); + + ps.close(); + fos.close(); + + return classList; + } + + + public static void addToClassList(PrintStream ps, String classes[]) + throws IOException + { + if (classes != null) { + for (String s : classes) { + ps.println(s); + } + } + } + + + // Optimization for getting a test name. + // Test name does not change during execution of the test, + // but getTestName() uses stack walking hence it is expensive. + // Therefore cache it and reuse it. + private static String testName; + public static String getTestName() { + if (testName == null) { + testName = Utils.getTestName(); + } + return testName; + } + + + public static String getDefaultArchiveName() { + return getTestName() + ".jsa"; + } + + + // ===================== FILE ACCESS convinience methods + public static File getOutputFile(String name) { + File dir = new File(System.getProperty("test.classes", ".")); + return new File(dir, getTestName() + "-" + name); + } + + + public static File getOutputSourceFile(String name) { + File dir = new File(System.getProperty("test.classes", ".")); + return new File(dir, name); + } + + + public static File getSourceFile(String name) { + File dir = new File(System.getProperty("test.src", ".")); + return new File(dir, name); + } + + + // ============================= Logging + public static OutputAnalyzer executeAndLog(ProcessBuilder pb, String logName) throws Exception { + long started = System.currentTimeMillis(); + OutputAnalyzer output = new OutputAnalyzer(pb.start()); + + writeFile(getOutputFile(logName + ".stdout"), output.getStdout()); + writeFile(getOutputFile(logName + ".stderr"), output.getStderr()); + System.out.println("[ELAPSED: " + (System.currentTimeMillis() - started) + " ms]"); + System.out.println("[STDERR]\n" + output.getStderr()); + + if (CopyChildStdoutToMainStdout) + System.out.println("[STDOUT]\n" + output.getStdout()); + + return output; + } + + + private static void writeFile(File file, String content) throws Exception { + FileOutputStream fos = new FileOutputStream(file); + PrintStream ps = new PrintStream(fos); + ps.print(content); + ps.close(); + fos.close(); + } +}