jdk-sandbox: comparison langtools/src/share/classes/com/sun/tools/sjavac/server/JavacServer.java

equal deleted inserted replaced

-:31b57f2b8d0b
+:2577ddb7e710
+/*
+* Copyright (c) 2011-2012, 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.  Oracle designates this
+* particular file as subject to the "Classpath" exception as provided
+* by Oracle in the LICENSE file that accompanied this code.
+*
+* 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 com.sun.tools.sjavac.server;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import java.io.FileNotFoundException;
+import java.net.URI;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.HashMap;
+import java.util.Map;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.net.SocketAddress;
+import java.util.ArrayList;
+import java.util.Random;
+import com.sun.tools.sjavac.Util;
+import com.sun.tools.sjavac.ProblemException;
+import java.io.*;
+import java.util.*;
+/**
+* The JavacServer class contains methods both to setup a server that responds to requests and methods to connect to this server.
+*
+* <p><b>This is NOT part of any supported API. If you write code that depends on this, you do so at your own risk. This code and its internal interfaces are
+* subject to change or deletion without notice.</b></p>
+*/
+public class JavacServer {
+// Responding to this tcp/ip port on localhost.
+private final ServerSocket serverSocket;
+// The secret cookie shared between server and client through the port file.
+private final long myCookie;
+// When the server was started.
+private long serverStart;
+// Accumulated build time for all requests, not counting idle time.
+private long totalBuildTime;
+// The javac server specific log file.
+PrintWriter theLog;
+// The compiler pool that maintains the compiler threads.
+CompilerPool compilerPool;
+// For the client, all port files fetched, one per started javac server.
+// Though usually only one javac server is started by a client.
+private static Map<String, PortFile> allPortFiles;
+private static Map<String, Long> maxServerMemory;
+final static int ERROR_FATAL = -1;
+final static int ERROR_BUT_TRY_AGAIN = -4712;
+final static String PROTOCOL_COOKIE_VERSION = "----THE-COOKIE-V2----";
+final static String PROTOCOL_CWD = "----THE-CWD----";
+final static String PROTOCOL_ID = "----THE-ID----";
+final static String PROTOCOL_ARGS = "----THE-ARGS----";
+final static String PROTOCOL_SOURCES_TO_COMPILE = "----THE-SOURCES-TO-COMPILE----";
+final static String PROTOCOL_VISIBLE_SOURCES = "----THE-VISIBLE-SOURCES----";
+final static String PROTOCOL_END = "----THE-END----";
+final static String PROTOCOL_STDOUT = "----THE-STDOUT----";
+final static String PROTOCOL_STDERR = "----THE-STDERR----";
+final static String PROTOCOL_PACKAGE_ARTIFACTS = "----THE-PACKAGE_ARTIFACTS----";
+final static String PROTOCOL_PACKAGE_DEPENDENCIES = "----THE-PACKAGE_DEPENDENCIES----";
+final static String PROTOCOL_PACKAGE_PUBLIC_APIS = "----THE-PACKAGE-PUBLIC-APIS----";
+final static String PROTOCOL_SYSINFO = "----THE-SYSINFO----";
+final static String PROTOCOL_RETURN_CODE = "----THE-RETURN-CODE----";
+// Check if the portfile is gone, every 5 seconds.
+static int CHECK_PORTFILE_INTERVAL = 5;
+// Wait 2 seconds for response, before giving up on javac server.
+static int CONNECTION_TIMEOUT = 2;
+static int WAIT_BETWEEN_CONNECT_ATTEMPTS = 1;
+static int MAX_NUM_CONNECT_ATTEMPTS = 3;
+/**
+* Acquire the port file. Synchronized since several threads inside an smart javac wrapper client acquires the same port file at the same time.
+*/
+private static synchronized PortFile getPortFile(String filename) throws FileNotFoundException {
+if (allPortFiles == null) {
+allPortFiles = new HashMap<String, PortFile>();
+}
+PortFile pf = allPortFiles.get(filename);
+if (pf == null) {
+pf = new PortFile(filename);
+allPortFiles.put(filename, pf);
+}
+return pf;
+}
+/**
+* Get the cookie used for this server.
+*/
+long getCookie() {
+return myCookie;
+}
+/**
+* Get the port used for this server.
+*/
+int getPort() {
+return serverSocket.getLocalPort();
+}
+/**
+* Sum up the total build time for this javac server.
+*/
+public void addBuildTime(long inc) {
+totalBuildTime += inc;
+}
+/**
+* Log this message.
+*/
+public void log(String msg) {
+if (theLog != null) {
+theLog.println(msg);
+} else {
+System.err.println(msg);
+}
+}
+/**
+* Make sure the log is flushed.
+*/
+public void flushLog() {
+if (theLog != null) {
+theLog.flush();
+}
+}
+/**
+* Start a server using a settings string. Typically: "--startserver:portfile=/tmp/myserver,poolsize=3" and the string "portfile=/tmp/myserver,poolsize=3"
+* is sent as the settings parameter. Returns 0 on success, -1 on failure.
+*/
+public static int startServer(String settings, PrintStream err) {
+try {
+String portfile = Util.extractStringOption("portfile", settings);
+// The log file collects more javac server specific log information.
+String logfile = Util.extractStringOption("logfile", settings);
+// The stdouterr file collects all the System.out and System.err writes to disk.
+String stdouterrfile = Util.extractStringOption("stdouterrfile", settings);
+// We could perhaps use System.setOut and setErr here.
+// But for the moment we rely on the client to spawn a shell where stdout
+// and stderr are redirected already.
+// The pool size is a limit the number of concurrent compiler threads used.
+// The server might use less than these to avoid memory problems.
+int poolsize = Util.extractIntOption("poolsize", settings);
+if (poolsize <= 0) {
+// If not set, default to the number of cores.
+poolsize = Runtime.getRuntime().availableProcessors();
+}
+// How many seconds of inactivity will the server accept before quitting?
+int keepalive = Util.extractIntOption("keepalive", settings);
+if (keepalive <= 0) {
+keepalive = 120;
+}
+// The port file is locked and the server port and cookie is written into it.
+PortFile portFile = getPortFile(portfile);
+JavacServer s;
+synchronized (portFile) {
+portFile.lock();
+portFile.getValues();
+if (portFile.containsPortInfo()) {
+err.println("Javac server not started because portfile exists!");
+portFile.unlock();
+return -1;
+}
+s = new JavacServer(poolsize, logfile);
+portFile.setValues(s.getPort(), s.getCookie());
+portFile.unlock();
+}
+// Run the server. Will delete the port file when shutting down.
+// It will shut down automatically when no new requests have come in
+// during the last 125 seconds.
+s.run(portFile, err, keepalive);
+// The run loop for the server has exited.
+return 0;
+} catch (Exception e) {
+e.printStackTrace(err);
+return -1;
+}
+}
+/**
+* Dispatch a compilation request to a javac server.
+*
+* @param args are the command line args to javac and is allowed to contain source files, @file and other command line options to javac.
+*
+* The generated classes, h files and other artifacts from the javac invocation are stored by the javac server to disk.
+*
+* @param sources_to_compile The sources to compile.
+*
+* @param visibleSources If visible sources has a non zero size, then visible_sources are the only files in the file system that the javac server can see!
+* (Sources to compile are always visible.) The visible sources are those supplied by the (filtered) -sourcepath
+*
+* @param visibleClasses If visible classes for a specific root/jar has a non zero size, then visible_classes are the only class files that the javac server
+* can see, in that root/jar. It maps from a classpath root or a jar file to the set of visible classes for that root/jar.
+*
+* The server return meta data about the build in the following parameters.
+* @param package_artifacts, map from package name to set of created artifacts for that package.
+* @param package_dependencies, map from package name to set of packages that it depends upon.
+* @param package_pubapis, map from package name to unique string identifying its pub api.
+*/
+public static int useServer(String settings, String[] args,
+Set<URI> sourcesToCompile,
+Set<URI> visibleSources,
+Map<URI, Set<String>> visibleClasses,
+Map<String, Set<URI>> packageArtifacts,
+Map<String, Set<String>> packageDependencies,
+Map<String, String> packagePubapis,
+SysInfo sysinfo,
+PrintStream out,
+PrintStream err) {
+try {
+// The id can perhaps be used in the future by the javac server to reuse the
+// JavaCompiler instance for several compiles using the same id.
+String id = Util.extractStringOption("id", settings);
+String portfile = Util.extractStringOption("portfile", settings);
+String logfile = Util.extractStringOption("logfile", settings);
+String stdouterrfile = Util.extractStringOption("stdouterrfile", settings);
+String background = Util.extractStringOption("background", settings);
+if (background == null || !background.equals("false")) {
+background = "true";
+}
+// The sjavac option specifies how the server part of sjavac is spawned.
+// If you have the experimental sjavac in your path, you are done. If not, you have
+// to point to a com.sun.tools.sjavac.Main that supports --startserver
+// for example by setting: sjavac=java%20-jar%20...javac.jar%com.sun.tools.sjavac.Main
+String sjavac = Util.extractStringOption("sjavac", settings);
+int poolsize = Util.extractIntOption("poolsize", settings);
+int keepalive = Util.extractIntOption("keepalive", settings);
+if (keepalive <= 0) {
+// Default keepalive for server is 120 seconds.
+// I.e. it will accept 120 seconds of inactivity before quitting.
+keepalive = 120;
+}
+if (portfile == null) {
+err.println("No portfile was specified!");
+return -1;
+}
+if (logfile == null) {
+logfile = portfile + ".javaclog";
+}
+if (stdouterrfile == null) {
+stdouterrfile = portfile + ".stdouterr";
+}
+// Default to sjavac and hope it is in the path.
+if (sjavac == null) {
+sjavac = "sjavac";
+}
+int attempts = 0;
+int rc = -1;
+do {
+PortFile port_file = getPortFile(portfile);
+synchronized (port_file) {
+port_file.lock();
+port_file.getValues();
+port_file.unlock();
+}
+if (!port_file.containsPortInfo()) {
+String cmd = fork(sjavac, port_file.getFilename(), logfile, poolsize, keepalive, err, stdouterrfile, background);
+if (background.equals("true") && !port_file.waitForValidValues()) {
+// Ouch the server did not start! Lets print its stdouterrfile and the command used.
+printFailedAttempt(cmd, stdouterrfile, err);
+// And give up.
+return -1;
+}
+}
+rc = connectAndCompile(port_file, id, args, sourcesToCompile, visibleSources,
+packageArtifacts, packageDependencies, packagePubapis, sysinfo,
+out, err);
+// Try again until we manage to connect. Any error after that
+// will cause the compilation to fail.
+if (rc == ERROR_BUT_TRY_AGAIN) {
+// We could not connect to the server. Try again.
+attempts++;
+try {
+Thread.sleep(WAIT_BETWEEN_CONNECT_ATTEMPTS);
+} catch (InterruptedException e) {
+}
+}
+} while (rc == ERROR_BUT_TRY_AGAIN && attempts < MAX_NUM_CONNECT_ATTEMPTS);
+return rc;
+} catch (Exception e) {
+e.printStackTrace(err);
+return -1;
+}
+}
+private static void printFailedAttempt(String cmd, String f, PrintStream err) {
+err.println("---- Failed to start javac server with this command -----");
+err.println(cmd);
+try {
+BufferedReader in = new BufferedReader(new FileReader(f));
+err.println("---- stdout/stderr output from attempt to start javac server -----");
+for (;;) {
+String l = in.readLine();
+if (l == null) {
+break;
+}
+err.println(l);
+}
+err.println("------------------------------------------------------------------");
+} catch (Exception e) {
+err.println("The stdout/stderr output in file " + f + " does not exist and the server did not start.");
+}
+}
+/**
+* Spawn the server instance.
+*/
+private JavacServer(int poolSize, String logfile) throws IOException {
+serverStart = System.currentTimeMillis();
+// Create a server socket on a random port that is bound to the localhost/127.0.0.1 interface.
+// I.e only local processes can connect to this port.
+serverSocket = new ServerSocket(0, 128, InetAddress.getByName(null));
+compilerPool = new CompilerPool(poolSize, this);
+Random rnd = new Random();
+myCookie = rnd.nextLong();
+theLog = new PrintWriter(logfile);
+log("Javac server started. port=" + getPort() + " date=" + (new java.util.Date()) + " with poolsize=" + poolSize);
+flushLog();
+}
+/**
+* Fork a background process. Returns the command line used that can be printed if something failed.
+*/
+private static String fork(String sjavac, String portfile, String logfile, int poolsize, int keepalive,
+final PrintStream err, String stdouterrfile, String background)
+throws IOException, ProblemException {
+if (stdouterrfile != null && stdouterrfile.trim().equals("")) {
+stdouterrfile = null;
+}
+final String startserver = "--startserver:portfile=" + portfile + ",logfile=" + logfile + ",stdouterrfile=" + stdouterrfile + ",poolsize=" + poolsize + ",keepalive="+ keepalive;
+if (background.equals("true")) {
+sjavac += "%20" + startserver;
+sjavac = sjavac.replaceAll("%20", " ");
+sjavac = sjavac.replaceAll("%2C", ",");
+// If the java/sh/cmd launcher fails the failure will be captured by stdouterr because of the redirection here.
+String[] cmd = {"/bin/sh", "-c", sjavac + " >> " + stdouterrfile + " 2>&1"};
+if (!(new File("/bin/sh")).canExecute()) {
+ArrayList<String> wincmd = new ArrayList<String>();
+wincmd.add("cmd");
+wincmd.add("/c");
+wincmd.add("start");
+wincmd.add("cmd");
+wincmd.add("/c");
+wincmd.add(sjavac + " >> " + stdouterrfile + " 2>&1");
+cmd = wincmd.toArray(new String[wincmd.size()]);
+}
+Process pp = null;
+try {
+pp = Runtime.getRuntime().exec(cmd);
+} catch (Exception e) {
+e.printStackTrace(err);
+e.printStackTrace(new PrintWriter(stdouterrfile));
+}
+StringBuilder rs = new StringBuilder();
+for (String s : cmd) {
+rs.append(s + " ");
+}
+return rs.toString();
+}
+// Do not spawn a background server, instead run it within the same JVM.
+Thread t = new Thread() {
+@Override
+public void run() {
+try {
+JavacServer.startServer(startserver, err);
+} catch (Throwable t) {
+t.printStackTrace(err);
+}
+}
+};
+t.start();
+return "";
+}
+/**
+* Expect this key on the next line read from the reader.
+*/
+private static boolean expect(BufferedReader in, String key) throws IOException {
+String s = in.readLine();
+if (s != null && s.equals(key)) {
+return true;
+}
+return false;
+}
+/**
+* Make a request to the server only to get the maximum possible heap size to use for compilations.
+*
+* @param port_file The port file used to synchronize creation of this server.
+* @param id The identify of the compilation.
+* @param out Standard out information.
+* @param err Standard err information.
+* @return The maximum heap size in bytes.
+*/
+public static SysInfo connectGetSysInfo(String serverSettings, PrintStream out, PrintStream err) {
+SysInfo sysinfo = new SysInfo(-1, -1);
+String id = Util.extractStringOption("id", serverSettings);
+String portfile = Util.extractStringOption("portfile", serverSettings);
+try {
+PortFile pf = getPortFile(portfile);
+useServer(serverSettings, new String[0],
+new HashSet<URI>(),
+new HashSet<URI>(),
+new HashMap<URI, Set<String>>(),
+new HashMap<String, Set<URI>>(),
+new HashMap<String, Set<String>>(),
+new HashMap<String, String>(),
+sysinfo, out, err);
+} catch (Exception e) {
+e.printStackTrace(err);
+}
+return sysinfo;
+}
+/**
+* Connect and compile using the javac server settings and the args. When using more advanced features, the sources_to_compile and visible_sources are
+* supplied to the server and meta data is returned in package_artifacts, package_dependencies and package_pubapis.
+*/
+private static int connectAndCompile(PortFile portFile, String id, String[] args,
+Set<URI> sourcesToCompile,
+Set<URI> visibleSources,
+Map<String, Set<URI>> packageArtifacts,
+Map<String, Set<String>> packageDependencies,
+Map<String, String> packagePublicApis,
+SysInfo sysinfo,
+PrintStream out,
+PrintStream err) {
+int rc = -3;
+try {
+int port = portFile.getPort();
+if (port == 0) {
+return ERROR_BUT_TRY_AGAIN;
+}
+long cookie = portFile.getCookie();
+// Acquire the localhost/127.0.0.1 address.
+InetAddress addr = InetAddress.getByName(null);
+SocketAddress sockaddr = new InetSocketAddress(addr, port);
+Socket sock = new Socket();
+int timeoutMs = CONNECTION_TIMEOUT * 1000;
+try {
+sock.connect(sockaddr, timeoutMs);
+} catch (java.net.ConnectException e) {
+err.println("Could not connect to javac server found in portfile: " + portFile.getFilename() + " " + e);
+return ERROR_BUT_TRY_AGAIN;
+}
+if (!sock.isConnected()) {
+err.println("Could not connect to javac server found in portfile: " + portFile.getFilename());
+return ERROR_BUT_TRY_AGAIN;
+}
+BufferedReader in = new BufferedReader(new InputStreamReader(sock.getInputStream()));
+PrintWriter sockout = new PrintWriter(sock.getOutputStream());
+sockout.println(PROTOCOL_COOKIE_VERSION);
+sockout.println("" + cookie);
+sockout.println(PROTOCOL_CWD);
+sockout.println(System.getProperty("user.dir"));
+sockout.println(PROTOCOL_ID);
+sockout.println(id);
+sockout.println(PROTOCOL_ARGS);
+for (String s : args) {
+StringBuffer buf = new StringBuffer();
+String[] paths = s.split(File.pathSeparator);
+int c = 0;
+for (String path : paths) {
+File f = new File(path);
+if (f.isFile() || f.isDirectory()) {
+buf.append(f.getAbsolutePath());
+c++;
+if (c < paths.length) {
+buf.append(File.pathSeparator);
+}
+} else {
+buf = new StringBuffer(s);
+break;
+}
+}
+sockout.println(buf.toString());
+}
+sockout.println(PROTOCOL_SOURCES_TO_COMPILE);
+for (URI uri : sourcesToCompile) {
+sockout.println(uri.toString());
+}
+sockout.println(PROTOCOL_VISIBLE_SOURCES);
+for (URI uri : visibleSources) {
+sockout.println(uri.toString());
+}
+sockout.println(PROTOCOL_END);
+sockout.flush();
+StringBuffer stdout = new StringBuffer();
+StringBuffer stderr = new StringBuffer();
+if (!expect(in, PROTOCOL_STDOUT)) {
+return ERROR_FATAL;
+}
+// Load stdout
+for (;;) {
+String l = in.readLine();
+if (l == null) {
+return ERROR_FATAL;
+}
+if (l.equals(PROTOCOL_STDERR)) {
+break;
+}
+stdout.append(l);
+stdout.append('\n');
+}
+// Load stderr
+for (;;) {
+String l = in.readLine();
+if (l == null) {
+return ERROR_FATAL;
+}
+if (l.equals(PROTOCOL_PACKAGE_ARTIFACTS)) {
+break;
+}
+stderr.append(l);
+stderr.append('\n');
+}
+// Load the package artifacts
+Set<URI> lastUriSet = null;
+for (;;) {
+String l = in.readLine();
+if (l == null) {
+return ERROR_FATAL;
+}
+if (l.equals(PROTOCOL_PACKAGE_DEPENDENCIES)) {
+break;
+}
+if (l.length() > 1 && l.charAt(0) == '+') {
+String pkg = l.substring(1);
+lastUriSet = new HashSet<URI>();
+packageArtifacts.put(pkg, lastUriSet);
+} else if (l.length() > 1 && lastUriSet != null) {
+lastUriSet.add(new URI(l.substring(1)));
+}
+}
+// Load package dependencies
+Set<String> lastPackageSet = null;
+for (;;) {
+String l = in.readLine();
+if (l == null) {
+return ERROR_FATAL;
+}
+if (l.equals(PROTOCOL_PACKAGE_PUBLIC_APIS)) {
+break;
+}
+if (l.length() > 1 && l.charAt(0) == '+') {
+String pkg = l.substring(1);
+lastPackageSet = new HashSet<String>();
+packageDependencies.put(pkg, lastPackageSet);
+} else if (l.length() > 1 && lastPackageSet != null) {
+lastPackageSet.add(l.substring(1));
+}
+}
+// Load package pubapis
+Map<String, StringBuffer> tmp = new HashMap<String, StringBuffer>();
+StringBuffer lastPublicApi = null;
+for (;;) {
+String l = in.readLine();
+if (l == null) {
+return ERROR_FATAL;
+}
+if (l.equals(PROTOCOL_SYSINFO)) {
+break;
+}
+if (l.length() > 1 && l.charAt(0) == '+') {
+String pkg = l.substring(1);
+lastPublicApi = new StringBuffer();
+tmp.put(pkg, lastPublicApi);
+} else if (l.length() > 1 && lastPublicApi != null) {
+lastPublicApi.append(l.substring(1));
+lastPublicApi.append("\n");
+}
+}
+for (String p : tmp.keySet()) {
+assert (packagePublicApis.get(p) == null);
+String api = tmp.get(p).toString();
+packagePublicApis.put(p, api);
+}
+// Now reading the max memory possible.
+for (;;) {
+String l = in.readLine();
+if (l == null) {
+return ERROR_FATAL;
+}
+if (l.equals(PROTOCOL_RETURN_CODE)) {
+break;
+}
+if (l.startsWith("num_cores=") && sysinfo != null) {
+sysinfo.numCores = Integer.parseInt(l.substring(10));
+}
+if (l.startsWith("max_memory=") && sysinfo != null) {
+sysinfo.maxMemory = Long.parseLong(l.substring(11));
+}
+}
+String l = in.readLine();
+if (l == null) {
+err.println("No return value from the server!");
+return ERROR_FATAL;
+}
+rc = Integer.parseInt(l);
+out.print(stdout);
+err.print(stderr);
+} catch (Exception e) {
+e.printStackTrace(err);
+}
+return rc;
+}
+/**
+* Run the server thread until it exits. Either because of inactivity or because the port file has been deleted by someone else, or overtaken by some other
+* javac server.
+*/
+private void run(PortFile portFile, PrintStream err, int keepalive) {
+boolean fileDeleted = false;
+long timeSinceLastCompile;
+try {
+// Every 5 second (check_portfile_interval) we test if the portfile has disappeared => quit
+// Or if the last request was finished more than 125 seconds ago => quit
+// 125 = seconds_of_inactivity_before_shutdown+check_portfile_interval
+serverSocket.setSoTimeout(CHECK_PORTFILE_INTERVAL*1000);
+for (;;) {
+try {
+Socket s = serverSocket.accept();
+CompilerThread ct = compilerPool.grabCompilerThread();
+ct.setSocket(s);
+compilerPool.execute(ct);
+flushLog();
+} catch (java.net.SocketTimeoutException e) {
+if (compilerPool.numActiveRequests() > 0) {
+// Never quit while there are active requests!
+continue;
+}
+// If this is the timeout after the portfile
+// has been deleted by us. Then we truly stop.
+if (fileDeleted) {
+log("Quitting because of "+(keepalive+CHECK_PORTFILE_INTERVAL)+" seconds of inactivity!");
+break;
+}
+// Check if the portfile is still there.
+if (!portFile.exists()) {
+// Time to quit because the portfile was deleted by another
+// process, probably by the makefile that is done building.
+log("Quitting because portfile was deleted!");
+flushLog();
+break;
+}
+// Check if portfile.stop is still there.
+if (portFile.markedForStop()) {
+// Time to quit because another process touched the file
+// server.port.stop to signal that the server should stop.
+// This is necessary on some operating systems that lock
+// the port file hard!
+log("Quitting because a portfile.stop file was found!");
+portFile.delete();
+flushLog();
+break;
+}
+// Does the portfile still point to me?
+if (!portFile.stillMyValues()) {
+// Time to quit because another build has started.
+log("Quitting because portfile is now owned by another javac server!");
+flushLog();
+break;
+}
+// Check how long since the last request finished.
+long diff = System.currentTimeMillis() - compilerPool.lastRequestFinished();
+if (diff < keepalive * 1000) {
+// Do not quit if we have waited less than 120 seconds.
+continue;
+}
+// Ok, time to quit because of inactivity. Perhaps the build
+// was killed and the portfile not cleaned up properly.
+portFile.delete();
+fileDeleted = true;
+log("" + keepalive + " seconds of inactivity quitting in "
++ CHECK_PORTFILE_INTERVAL + " seconds!");
+flushLog();
+// Now we have a second 5 second grace
+// period where javac remote requests
+// that have loaded the data from the
+// recently deleted portfile can connect
+// and complete their requests.
+}
+}
+} catch (Exception e) {
+e.printStackTrace(err);
+e.printStackTrace(theLog);
+flushLog();
+} finally {
+compilerPool.shutdown();
+}
+long realTime = System.currentTimeMillis() - serverStart;
+log("Shutting down.");
+log("Total wall clock time " + realTime + "ms build time " + totalBuildTime + "ms");
+flushLog();
+}
+public static void cleanup(String... args) {
+String settings = Util.findServerSettings(args);
+if (settings == null) return;
+String portfile = Util.extractStringOption("portfile", settings);
+String background = Util.extractStringOption("background", settings);
+if (background != null && background.equals("false")) {
+// If the server runs within this jvm, then delete the portfile,
+// since this jvm is about to exit soon.
+File f = new File(portfile);
+f.delete();
+}
+}
+}

changeset 15368	2577ddb7e710
child 20241	1e178dbe29c1