--- a/jdk/test/sun/tools/jmap/heapconfig/LingeredApp.java Fri Jun 12 19:23:53 2015 -0500
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,431 +0,0 @@
-/*
- * 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.
- */
-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();
- }
-
- /**
- *
- * @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
- */
- 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();
- 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);
- }
-}