jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/sjavac/server/JavacServer.java@71b0089b146f (annotated)

src/share/classes/com/sun/tools/sjavac/server/JavacServer.java@71b0089b146f (annotated)

src/share/classes/com/sun/tools/sjavac/server/JavacServer.java

Thu, 15 Aug 2013 17:24:35 +0200

author: erikj
date: Thu, 15 Aug 2013 17:24:35 +0200
changeset 1953: 71b0089b146f
parent 1504: 22e417cdddee
child 2039: 0cfd5baa7154
permissions: -rw-r--r--

8015145: Smartjavac needs more flexibility with linking to sources
Reviewed-by: jjg, ohrstrom

 /*
  * 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();
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/sjavac/server/JavacServer.java@71b0089b146f (annotated)

src/share/classes/com/sun/tools/sjavac/server/JavacServer.java