| /* |
| * 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.containsPortInfo() ? portFile.getPort() : 0; |
| 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(); |
| } |
| } |
| } |
