8081037: serviceability/sa/ tests time out on Windows

Reviewed-by: jbachorik, sla, dsamersoff

test/lib-test/jdk/test/lib/apps/LingeredAppTest.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2015, 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
+ * @summary Unit test for LingeredApp
+ * @compile LingeredAppTest.java
+ * @compile LingeredApp.java
+ * @run main LingeredAppTest
+ */
+
+package jdk.test.lib.apps;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+public class LingeredAppTest {
+
+    public static void main(String[] args) {
+        try {
+            System.out.println("Starting LingeredApp with default parameters");
+
+            ArrayList<String> cmd = new ArrayList<String>();
+
+            // Propagate test.vm.options to LingeredApp, filter out possible empty options
+            String testVmOpts[] = System.getProperty("test.vm.opts","").split("\\s+");
+            for (String s : testVmOpts) {
+                if (!s.equals("")) {
+                    cmd.add(s);
+                }
+            }
+
+            cmd.add("-XX:+PrintFlagsFinal");
+
+            LingeredApp a = LingeredApp.startApp(cmd);
+            System.out.printf("App pid: %d\n", a.getPid());
+            a.stopApp();
+
+            System.out.println("App output:");
+            int count = 0;
+            for (String line : a.getAppOutput()) {
+                count += 1;
+            }
+            System.out.println("Found " + count + " lines in VM output");
+            System.out.println("Test PASSED");
+        } catch (IOException ex) {
+            ex.printStackTrace();
+            System.out.println("Test ERROR");
+            System.exit(3);
+        }
+    }
+}

test/lib/Makefile

@@ -42,7 +42,8 @@ JAVAC = $(JDK_HOME)/bin/javac
 JAR = $(JDK_HOME)/bin/jar
 
 WB_SRC_FILES = $(shell find $(SRC_DIR)/sun/hotspot -name '*.java')
-SHARE_SRC_FILES = $(shell find $(SRC_DIR)/share/classes -name '*.java')
+# test-lib.jar will contain only hprof classes until JDK-8081381 is resolved
+SHARE_SRC_FILES = $(shell find $(SRC_DIR)/share/classes/jdk/test/lib/hprof -name '*.java')
 
 .PHONY: wb.filelist share.filelist clean cleantmp
 

test/lib/share/classes/jdk/test/lib/apps/LingeredApp.java

@@ -0,0 +1,434 @@
+/*
+ * Copyright (c) 2015, 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.apps;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.nio.file.attribute.FileTime;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * This is a framework to launch an app that could be synchronized with caller
+ * to make further attach actions reliable across supported platforms
+
+ * Caller example:
+ *   SmartTestApp a = SmartTestApp.startApp(cmd);
+ *     // do something
+ *   a.stopApp();
+ *
+ *   or fine grained control
+ *
+ *   a = new SmartTestApp("MyLock.lck");
+ *   a.createLock();
+ *   a.runApp();
+ *   a.waitAppReady();
+ *     // do something
+ *   a.deleteLock();
+ *   a.waitAppTerminate();
+ *
+ *  Then you can work with app output and process object
+ *
+ *   output = a.getAppOutput();
+ *   process = a.getProcess();
+ *
+ */
+public class LingeredApp {
+
+    private static final long spinDelay = 1000;
+
+    private final String lockFileName;
+    private long lockCreationTime;
+    private Process appProcess;
+    private final ArrayList<String> storedAppOutput;
+
+    /*
+     * Drain child process output, store it into string array
+     */
+    class InputGobbler extends Thread {
+
+        InputStream is;
+        List<String> astr;
+
+        InputGobbler(InputStream is, List<String> astr) {
+            this.is = is;
+            this.astr = astr;
+        }
+
+        public void run() {
+            try {
+                InputStreamReader isr = new InputStreamReader(is);
+                BufferedReader br = new BufferedReader(isr);
+                String line = null;
+                while ((line = br.readLine()) != null) {
+                    astr.add(line);
+                }
+            } catch (IOException ex) {
+                // pass
+            }
+        }
+    }
+
+    /**
+     * Create LingeredApp object on caller side. Lock file have be a valid filename
+     * at writable location
+     *
+     * @param lockFileName - the name of lock file
+     */
+    public LingeredApp(String lockFileName) {
+        this.lockFileName = lockFileName;
+        this.storedAppOutput = new ArrayList<String>();
+    }
+
+    /**
+     *
+     * @return name of lock file
+     */
+    public String getLockFileName() {
+        return this.lockFileName;
+    }
+
+    /**
+     *
+     * @return name of testapp
+     */
+    public String getAppName() {
+        return this.getClass().getName();
+    }
+
+    /**
+     *
+     *  @return pid of java process running testapp
+     */
+    public long getPid() {
+        if (appProcess == null) {
+            throw new RuntimeException("Process is not alive");
+        }
+        return appProcess.getPid();
+    }
+
+    /**
+     *
+     * @return process object
+     */
+    public Process getProcess() {
+        return appProcess;
+    }
+
+    /**
+     *
+     * @return application output as string array. Empty array if application produced no output
+     */
+    public List<String> getAppOutput() {
+        if (appProcess.isAlive()) {
+            throw new RuntimeException("Process is still alive. Can't get its output.");
+        }
+        return storedAppOutput;
+    }
+
+    /* Make sure all part of the app use the same method to get dates,
+     as different methods could produce different results
+     */
+    private static long epoch() {
+        return new Date().getTime();
+    }
+
+    private static long lastModified(String fileName) throws IOException {
+        Path path = Paths.get(fileName);
+        BasicFileAttributes attr = Files.readAttributes(path, BasicFileAttributes.class);
+        return attr.lastModifiedTime().toMillis();
+    }
+
+    private static void setLastModified(String fileName, long newTime) throws IOException {
+        Path path = Paths.get(fileName);
+        FileTime fileTime = FileTime.fromMillis(newTime);
+        Files.setLastModifiedTime(path, fileTime);
+    }
+
+    /**
+     * create lock
+     *
+     * @throws IOException
+     */
+    public void createLock() throws IOException {
+        Path path = Paths.get(lockFileName);
+        // Files.deleteIfExists(path);
+        Files.createFile(path);
+        lockCreationTime = lastModified(lockFileName);
+    }
+
+    /**
+     * Delete lock
+     *
+     * @throws IOException
+     */
+    public void deleteLock() throws IOException {
+        try {
+            Path path = Paths.get(lockFileName);
+            Files.delete(path);
+        } catch (NoSuchFileException ex) {
+            // Lock already deleted. Ignore error
+        }
+    }
+
+    public void waitAppTerminate() {
+        while (true) {
+            try {
+                appProcess.waitFor();
+                break;
+            } catch (InterruptedException ex) {
+                // pass
+            }
+        }
+    }
+
+    /**
+     * The app touches the lock file when it's started
+     * wait while it happens. Caller have to delete lock on wait error.
+     *
+     * @param timeout
+     * @throws java.io.IOException
+     */
+    public void waitAppReady(long timeout) throws IOException {
+        long here = epoch();
+        while (true) {
+            long epoch = epoch();
+            if (epoch - here > (timeout * 1000)) {
+                throw new IOException("App waiting timeout");
+            }
+
+            // Live process should touch lock file every second
+            long lm = lastModified(lockFileName);
+            if (lm > lockCreationTime) {
+                break;
+            }
+
+            // Make sure process didn't already exit
+            if (!appProcess.isAlive()) {
+                throw new IOException("App exited unexpectedly with " + appProcess.exitValue());
+            }
+
+            try {
+                Thread.sleep(spinDelay);
+            } catch (InterruptedException ex) {
+                // pass
+            }
+        }
+    }
+
+    /**
+     * Run the app
+     *
+     * @param vmArguments
+     * @throws IOException
+     */
+    public void runApp(List<String> vmArguments)
+            throws IOException {
+
+        // We should always use testjava or throw an exception,
+        // so we can't use JDKToolFinder.getJDKTool("java");
+        // that falls back to compile java on error
+        String jdkPath = System.getProperty("test.jdk");
+        if (jdkPath == null) {
+            // we are not under jtreg, try env
+            Map<String, String> env = System.getenv();
+            jdkPath = env.get("TESTJAVA");
+        }
+
+        if (jdkPath == null) {
+            throw new RuntimeException("Can't determine jdk path neither test.jdk property no TESTJAVA env are set");
+        }
+
+        String osname = System.getProperty("os.name");
+        String javapath = jdkPath + ((osname.startsWith("window")) ? "/bin/java.exe" : "/bin/java");
+
+        List<String> cmd = new ArrayList<String>();
+        cmd.add(javapath);
+
+
+        if (vmArguments == null) {
+            // Propagate test.vm.options to LingeredApp, filter out possible empty options
+            String testVmOpts[] = System.getProperty("test.vm.opts","").split("\\s+");
+            for (String s : testVmOpts) {
+                if (!s.equals("")) {
+                    cmd.add(s);
+                }
+            }
+        }
+        else{
+            // Lets user manage LingerApp options
+            cmd.addAll(vmArguments);
+        }
+
+        // Make sure we set correct classpath to run the app
+        cmd.add("-cp");
+        String classpath = System.getProperty("test.class.path");
+        cmd.add((classpath == null) ? "." : classpath);
+
+        cmd.add(this.getAppName());
+        cmd.add(lockFileName);
+
+        // Reporting
+        StringBuilder cmdLine = new StringBuilder();
+        for (String strCmd : cmd) {
+            cmdLine.append("'").append(strCmd).append("' ");
+        }
+
+        // A bit of verbosity
+        System.out.println("Command line: [" + cmdLine.toString() + "]");
+
+        ProcessBuilder pb = new ProcessBuilder(cmd);
+        // we don't expect any error output but make sure we are not stuck on pipe
+        // pb.redirectErrorStream(false);
+        pb.redirectError(ProcessBuilder.Redirect.INHERIT);
+
+        appProcess = pb.start();
+
+        // Create pipe reader for process, and read stdin and stderr to array of strings
+        InputGobbler gb = new InputGobbler(appProcess.getInputStream(), storedAppOutput);
+        gb.start();
+    }
+
+    /**
+     *  High level interface for test writers
+     */
+    /**
+     * Factory method that creates SmartAppTest object with ready to use application
+     * lock name is autogenerated, wait timeout is hardcoded
+     * @param cmd - vm options, could be null to auto add testvm.options
+     * @return LingeredApp object
+     * @throws IOException
+     */
+    public static LingeredApp startApp(List<String> cmd) throws IOException {
+        final String lockName = UUID.randomUUID().toString() + ".lck";
+        final int waitTime = 10;
+
+        LingeredApp a = new LingeredApp(lockName);
+        a.createLock();
+        try {
+            a.runApp(cmd);
+            a.waitAppReady(waitTime);
+        } catch (Exception ex) {
+            a.deleteLock();
+            throw ex;
+        }
+
+        return a;
+    }
+
+    public static LingeredApp startApp() throws IOException {
+        return startApp(null);
+    }
+
+    /**
+     * Delete lock file that signal app to terminate, then
+     * waits until app is actually terminated.
+     * @throws IOException
+     */
+    public void stopApp() throws IOException {
+        deleteLock();
+        waitAppTerminate();
+        int exitcode = appProcess.exitValue();
+        if (exitcode != 0) {
+            throw new IOException("LingeredApp terminated with non-zero exit code " + exitcode);
+        }
+    }
+
+    /**
+     * LastModified time might not work correctly in some cases it might
+     * cause later failures
+     */
+
+    public static boolean isLastModifiedWorking() {
+        boolean sane = true;
+        try {
+            long lm = lastModified(".");
+            if (lm == 0) {
+                System.err.println("SANITY Warning! The lastModifiedTime() doesn't work on this system, it returns 0");
+                sane = false;
+            }
+
+            long now = epoch();
+            if (lm > now) {
+                System.err.println("SANITY Warning! The Clock is wrong on this system lastModifiedTime() > getTime()");
+                sane = false;
+            }
+
+            setLastModified(".", epoch());
+            long lm1 = lastModified(".");
+            if (lm1 <= lm) {
+                System.err.println("SANITY Warning! The setLastModified doesn't work on this system");
+                sane = false;
+            }
+        }
+        catch(IOException e) {
+            System.err.println("SANITY Warning! IOException during sanity check " + e);
+            sane = false;
+        }
+
+        return sane;
+    }
+
+    /**
+     * This part is the application it self
+     */
+    public static void main(String args[]) {
+
+        if (args.length != 1) {
+            System.err.println("Lock file name is not specified");
+            System.exit(7);
+        }
+
+        String theLockFileName = args[0];
+
+        try {
+            Path path = Paths.get(theLockFileName);
+
+            while (Files.exists(path)) {
+                // Touch the lock to indicate our readiness
+                setLastModified(theLockFileName, epoch());
+                Thread.sleep(spinDelay);
+            }
+        } catch (NoSuchFileException ex) {
+            // Lock deleted while we are setting last modified time.
+            // Ignore error and lets the app exits
+        } catch (Exception ex) {
+            System.err.println("LingeredApp ERROR: " + ex);
+            // Leave exit_code = 1 to Java launcher
+            System.exit(3);
+        }
+
+        System.exit(0);
+    }
+}