1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/sjavac/JavacState.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,860 @@
1.4 +/*
1.5 + * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.sjavac;
1.30 +
1.31 +import java.io.*;
1.32 +import java.util.Collections;
1.33 +import java.util.Date;
1.34 +import java.util.Set;
1.35 +import java.util.HashSet;
1.36 +import java.util.List;
1.37 +import java.util.Map;
1.38 +import java.util.HashMap;
1.39 +import java.text.SimpleDateFormat;
1.40 +import java.net.URI;
1.41 +import java.util.*;
1.42 +
1.43 +/**
1.44 + * The javac state class maintains the previous (prev) and the current (now)
1.45 + * build states and everything else that goes into the javac_state file.
1.46 + *
1.47 + * <p><b>This is NOT part of any supported API.
1.48 + * If you write code that depends on this, you do so at your own
1.49 + * risk. This code and its internal interfaces are subject to change
1.50 + * or deletion without notice.</b></p>
1.51 + */
1.52 +public class JavacState
1.53 +{
1.54 + // The arguments to the compile. If not identical, then it cannot
1.55 + // be an incremental build!
1.56 + String theArgs;
1.57 + // The number of cores limits how many threads are used for heavy concurrent work.
1.58 + int numCores;
1.59 +
1.60 + // The bin_dir/javac_state
1.61 + private String javacStateFilename;
1.62 + private File javacState;
1.63 +
1.64 + // The previous build state is loaded from javac_state
1.65 + private BuildState prev;
1.66 + // The current build state is constructed during the build,
1.67 + // then saved as the new javac_state.
1.68 + private BuildState now;
1.69 +
1.70 + // Something has changed in the javac_state. It needs to be saved!
1.71 + private boolean needsSaving;
1.72 + // If this is a new javac_state file, then do not print unnecessary messages.
1.73 + private boolean newJavacState;
1.74 +
1.75 + // These are packages where something has changed and the package
1.76 + // needs to be recompiled. Actions that trigger recompilation:
1.77 + // * source belonging to the package has changed
1.78 + // * artifact belonging to the package is lost, or its timestamp has been changed.
1.79 + // * an unknown artifact has appeared, we simply delete it, but we also trigger a recompilation.
1.80 + // * a package that is tainted, taints all packages that depend on it.
1.81 + private Set<String> taintedPackages;
1.82 + // After a compile, the pubapis are compared with the pubapis stored in the javac state file.
1.83 + // Any packages where the pubapi differ are added to this set.
1.84 + // Later we use this set and the dependency information to taint dependent packages.
1.85 + private Set<String> packagesWithChangedPublicApis;
1.86 + // When a module-info.java file is changed, taint the module,
1.87 + // then taint all modules that depend on that that module.
1.88 + // A module dependency can occur directly through a require, or
1.89 + // indirectly through a module that does a public export for the first tainted module.
1.90 + // When all modules are tainted, then taint all packages belonging to these modules.
1.91 + // Then rebuild. It is perhaps possible (and valuable?) to do a more finegrained examination of the
1.92 + // change in module-info.java, but that will have to wait.
1.93 + private Set<String> taintedModules;
1.94 + // The set of all packages that has been recompiled.
1.95 + // Copy over the javac_state for the packages that did not need recompilation,
1.96 + // verbatim from the previous (prev) to the new (now) build state.
1.97 + private Set<String> recompiledPackages;
1.98 +
1.99 + // The output directories filled with tasty artifacts.
1.100 + private File binDir, gensrcDir, headerDir;
1.101 +
1.102 + // The current status of the file system.
1.103 + private Set<File> binArtifacts;
1.104 + private Set<File> gensrcArtifacts;
1.105 + private Set<File> headerArtifacts;
1.106 +
1.107 + // The status of the sources.
1.108 + Set<Source> removedSources = null;
1.109 + Set<Source> addedSources = null;
1.110 + Set<Source> modifiedSources = null;
1.111 +
1.112 + // Visible sources for linking. These are the only
1.113 + // ones that -sourcepath is allowed to see.
1.114 + Set<URI> visibleSrcs;
1.115 +
1.116 + // Visible classes for linking. These are the only
1.117 + // ones that -classpath is allowed to see.
1.118 + // It maps from a classpath root to the set of visible classes for that root.
1.119 + // If the set is empty, then all classes are visible for that root.
1.120 + // It can also map from a jar file to the set of visible classes for that jar file.
1.121 + Map<URI,Set<String>> visibleClasses;
1.122 +
1.123 + // Setup two transforms that always exist.
1.124 + private CopyFile copyFiles = new CopyFile();
1.125 + private CompileJavaPackages compileJavaPackages = new CompileJavaPackages();
1.126 +
1.127 + // Where to send stdout and stderr.
1.128 + private PrintStream out, err;
1.129 +
1.130 + JavacState(String[] args, File bd, File gd, File hd, boolean permitUnidentifiedArtifacts, boolean removeJavacState,
1.131 + PrintStream o, PrintStream e) {
1.132 + out = o;
1.133 + err = e;
1.134 + numCores = Main.findNumberOption(args, "-j");
1.135 + theArgs = "";
1.136 + for (String a : removeArgsNotAffectingState(args)) {
1.137 + theArgs = theArgs+a+" ";
1.138 + }
1.139 + binDir = bd;
1.140 + gensrcDir = gd;
1.141 + headerDir = hd;
1.142 + javacStateFilename = binDir.getPath()+File.separator+"javac_state";
1.143 + javacState = new File(javacStateFilename);
1.144 + if (removeJavacState && javacState.exists()) {
1.145 + javacState.delete();
1.146 + }
1.147 + newJavacState = false;
1.148 + if (!javacState.exists()) {
1.149 + newJavacState = true;
1.150 + // If there is no javac_state then delete the contents of all the artifact dirs!
1.151 + // We do not want to risk building a broken incremental build.
1.152 + // BUT since the makefiles still copy things straight into the bin_dir et al,
1.153 + // we avoid deleting files here, if the option --permit-unidentified-classes was supplied.
1.154 + if (!permitUnidentifiedArtifacts) {
1.155 + deleteContents(binDir);
1.156 + deleteContents(gensrcDir);
1.157 + deleteContents(headerDir);
1.158 + }
1.159 + needsSaving = true;
1.160 + }
1.161 + prev = new BuildState();
1.162 + now = new BuildState();
1.163 + taintedPackages = new HashSet<String>();
1.164 + recompiledPackages = new HashSet<String>();
1.165 + packagesWithChangedPublicApis = new HashSet<String>();
1.166 + }
1.167 +
1.168 + public BuildState prev() { return prev; }
1.169 + public BuildState now() { return now; }
1.170 +
1.171 + /**
1.172 + * Remove args not affecting the state.
1.173 + */
1.174 + static String[] removeArgsNotAffectingState(String[] args) {
1.175 + String[] out = new String[args.length];
1.176 + int j = 0;
1.177 + for (int i = 0; i<args.length; ++i) {
1.178 + if (args[i].equals("-j")) {
1.179 + // Just skip it and skip following value
1.180 + i++;
1.181 + } else if (args[i].startsWith("--server:")) {
1.182 + // Just skip it.
1.183 + } else if (args[i].startsWith("--log=")) {
1.184 + // Just skip it.
1.185 + } else if (args[i].equals("--compare-found-sources")) {
1.186 + // Just skip it and skip verify file name
1.187 + i++;
1.188 + } else {
1.189 + // Copy argument.
1.190 + out[j] = args[i];
1.191 + j++;
1.192 + }
1.193 + }
1.194 + String[] ret = new String[j];
1.195 + System.arraycopy(out, 0, ret, 0, j);
1.196 + return ret;
1.197 + }
1.198 +
1.199 + /**
1.200 + * Specify which sources are visible to the compiler through -sourcepath.
1.201 + */
1.202 + public void setVisibleSources(Map<String,Source> vs) {
1.203 + visibleSrcs = new HashSet<URI>();
1.204 + for (String s : vs.keySet()) {
1.205 + Source src = vs.get(s);
1.206 + visibleSrcs.add(src.file().toURI());
1.207 + }
1.208 + }
1.209 +
1.210 + /**
1.211 + * Specify which classes are visible to the compiler through -classpath.
1.212 + */
1.213 + public void setVisibleClasses(Map<String,Source> vs) {
1.214 + visibleSrcs = new HashSet<URI>();
1.215 + for (String s : vs.keySet()) {
1.216 + Source src = vs.get(s);
1.217 + visibleSrcs.add(src.file().toURI());
1.218 + }
1.219 + }
1.220 + /**
1.221 + * Returns true if this is an incremental build.
1.222 + */
1.223 + public boolean isIncremental() {
1.224 + return !prev.sources().isEmpty();
1.225 + }
1.226 +
1.227 + /**
1.228 + * Find all artifacts that exists on disk.
1.229 + */
1.230 + public void findAllArtifacts() {
1.231 + binArtifacts = findAllFiles(binDir);
1.232 + gensrcArtifacts = findAllFiles(gensrcDir);
1.233 + headerArtifacts = findAllFiles(headerDir);
1.234 + }
1.235 +
1.236 + /**
1.237 + * Lookup the artifacts generated for this package in the previous build.
1.238 + */
1.239 + private Map<String,File> fetchPrevArtifacts(String pkg) {
1.240 + Package p = prev.packages().get(pkg);
1.241 + if (p != null) {
1.242 + return p.artifacts();
1.243 + }
1.244 + return new HashMap<String,File>();
1.245 + }
1.246 +
1.247 + /**
1.248 + * Delete all prev artifacts in the currently tainted packages.
1.249 + */
1.250 + public void deleteClassArtifactsInTaintedPackages() {
1.251 + for (String pkg : taintedPackages) {
1.252 + Map<String,File> arts = fetchPrevArtifacts(pkg);
1.253 + for (File f : arts.values()) {
1.254 + if (f.exists() && f.getName().endsWith(".class")) {
1.255 + f.delete();
1.256 + }
1.257 + }
1.258 + }
1.259 + }
1.260 +
1.261 + /**
1.262 + * Mark the javac_state file to be in need of saving and as a side effect,
1.263 + * it gets a new timestamp.
1.264 + */
1.265 + private void needsSaving() {
1.266 + needsSaving = true;
1.267 + }
1.268 +
1.269 + /**
1.270 + * Save the javac_state file.
1.271 + */
1.272 + public void save() throws IOException {
1.273 + if (!needsSaving) return;
1.274 + try (FileWriter out = new FileWriter(javacStateFilename)) {
1.275 + StringBuilder b = new StringBuilder();
1.276 + long millisNow = System.currentTimeMillis();
1.277 + Date d = new Date(millisNow);
1.278 + SimpleDateFormat df =
1.279 + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SSS");
1.280 + b.append("# javac_state ver 0.3 generated "+millisNow+" "+df.format(d)+"\n");
1.281 + b.append("# This format might change at any time. Please do not depend on it.\n");
1.282 + b.append("# M module\n");
1.283 + b.append("# P package\n");
1.284 + b.append("# S C source_tobe_compiled timestamp\n");
1.285 + b.append("# S L link_only_source timestamp\n");
1.286 + b.append("# G C generated_source timestamp\n");
1.287 + b.append("# A artifact timestamp\n");
1.288 + b.append("# D dependency\n");
1.289 + b.append("# I pubapi\n");
1.290 + b.append("# R arguments\n");
1.291 + b.append("R ").append(theArgs).append("\n");
1.292 +
1.293 + // Copy over the javac_state for the packages that did not need recompilation.
1.294 + now.copyPackagesExcept(prev, recompiledPackages, new HashSet<String>());
1.295 + // Save the packages, ie package names, dependencies, pubapis and artifacts!
1.296 + // I.e. the lot.
1.297 + Module.saveModules(now.modules(), b);
1.298 +
1.299 + String s = b.toString();
1.300 + out.write(s, 0, s.length());
1.301 + }
1.302 + }
1.303 +
1.304 + /**
1.305 + * Load a javac_state file.
1.306 + */
1.307 + public static JavacState load(String[] args, File binDir, File gensrcDir, File headerDir,
1.308 + boolean permitUnidentifiedArtifacts, PrintStream out, PrintStream err) {
1.309 + JavacState db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, false, out, err);
1.310 + Module lastModule = null;
1.311 + Package lastPackage = null;
1.312 + Source lastSource = null;
1.313 + boolean noFileFound = false;
1.314 + boolean foundCorrectVerNr = false;
1.315 + boolean newCommandLine = false;
1.316 + boolean syntaxError = false;
1.317 +
1.318 + try (BufferedReader in = new BufferedReader(new FileReader(db.javacStateFilename))) {
1.319 + for (;;) {
1.320 + String l = in.readLine();
1.321 + if (l==null) break;
1.322 + if (l.length()>=3 && l.charAt(1) == ' ') {
1.323 + char c = l.charAt(0);
1.324 + if (c == 'M') {
1.325 + lastModule = db.prev.loadModule(l);
1.326 + } else
1.327 + if (c == 'P') {
1.328 + if (lastModule == null) { syntaxError = true; break; }
1.329 + lastPackage = db.prev.loadPackage(lastModule, l);
1.330 + } else
1.331 + if (c == 'D') {
1.332 + if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
1.333 + lastPackage.loadDependency(l);
1.334 + } else
1.335 + if (c == 'I') {
1.336 + if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
1.337 + lastPackage.loadPubapi(l);
1.338 + } else
1.339 + if (c == 'A') {
1.340 + if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
1.341 + lastPackage.loadArtifact(l);
1.342 + } else
1.343 + if (c == 'S') {
1.344 + if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
1.345 + lastSource = db.prev.loadSource(lastPackage, l, false);
1.346 + } else
1.347 + if (c == 'G') {
1.348 + if (lastModule == null || lastPackage == null) { syntaxError = true; break; }
1.349 + lastSource = db.prev.loadSource(lastPackage, l, true);
1.350 + } else
1.351 + if (c == 'R') {
1.352 + String ncmdl = "R "+db.theArgs;
1.353 + if (!l.equals(ncmdl)) {
1.354 + newCommandLine = true;
1.355 + }
1.356 + } else
1.357 + if (c == '#') {
1.358 + if (l.startsWith("# javac_state ver ")) {
1.359 + int sp = l.indexOf(" ", 18);
1.360 + if (sp != -1) {
1.361 + String ver = l.substring(18,sp);
1.362 + if (!ver.equals("0.3")) {
1.363 + break;
1.364 + }
1.365 + foundCorrectVerNr = true;
1.366 + }
1.367 + }
1.368 + }
1.369 + }
1.370 + }
1.371 + } catch (FileNotFoundException e) {
1.372 + // Silently create a new javac_state file.
1.373 + noFileFound = true;
1.374 + } catch (IOException e) {
1.375 + Log.info("Dropping old javac_state because of errors when reading it.");
1.376 + db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
1.377 + foundCorrectVerNr = true;
1.378 + newCommandLine = false;
1.379 + syntaxError = false;
1.380 + }
1.381 + if (foundCorrectVerNr == false && !noFileFound) {
1.382 + Log.info("Dropping old javac_state since it is of an old version.");
1.383 + db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
1.384 + } else
1.385 + if (newCommandLine == true && !noFileFound) {
1.386 + Log.info("Dropping old javac_state since a new command line is used!");
1.387 + db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
1.388 + } else
1.389 + if (syntaxError == true) {
1.390 + Log.info("Dropping old javac_state since it contains syntax errors.");
1.391 + db = new JavacState(args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
1.392 + }
1.393 + db.prev.calculateDependents();
1.394 + return db;
1.395 + }
1.396 +
1.397 + /**
1.398 + * Mark a java package as tainted, ie it needs recompilation.
1.399 + */
1.400 + public void taintPackage(String name, String because) {
1.401 + if (!taintedPackages.contains(name)) {
1.402 + if (because != null) Log.debug("Tainting "+Util.justPackageName(name)+" because "+because);
1.403 + // It has not been tainted before.
1.404 + taintedPackages.add(name);
1.405 + needsSaving();
1.406 + Package nowp = now.packages().get(name);
1.407 + if (nowp != null) {
1.408 + for (String d : nowp.dependents()) {
1.409 + taintPackage(d, because);
1.410 + }
1.411 + }
1.412 + }
1.413 + }
1.414 +
1.415 + /**
1.416 + * This packages need recompilation.
1.417 + */
1.418 + public Set<String> taintedPackages() {
1.419 + return taintedPackages;
1.420 + }
1.421 +
1.422 + /**
1.423 + * Clean out the tainted package set, used after the first round of compiles,
1.424 + * prior to propagating dependencies.
1.425 + */
1.426 + public void clearTaintedPackages() {
1.427 + taintedPackages = new HashSet<String>();
1.428 + }
1.429 +
1.430 + /**
1.431 + * Go through all sources and check which have been removed, added or modified
1.432 + * and taint the corresponding packages.
1.433 + */
1.434 + public void checkSourceStatus(boolean check_gensrc) {
1.435 + removedSources = calculateRemovedSources();
1.436 + for (Source s : removedSources) {
1.437 + if (!s.isGenerated() || check_gensrc) {
1.438 + taintPackage(s.pkg().name(), "source "+s.name()+" was removed");
1.439 + }
1.440 + }
1.441 +
1.442 + addedSources = calculateAddedSources();
1.443 + for (Source s : addedSources) {
1.444 + String msg = null;
1.445 + if (isIncremental()) {
1.446 + // When building from scratch, there is no point
1.447 + // printing "was added" for every file since all files are added.
1.448 + // However for an incremental build it makes sense.
1.449 + msg = "source "+s.name()+" was added";
1.450 + }
1.451 + if (!s.isGenerated() || check_gensrc) {
1.452 + taintPackage(s.pkg().name(), msg);
1.453 + }
1.454 + }
1.455 +
1.456 + modifiedSources = calculateModifiedSources();
1.457 + for (Source s : modifiedSources) {
1.458 + if (!s.isGenerated() || check_gensrc) {
1.459 + taintPackage(s.pkg().name(), "source "+s.name()+" was modified");
1.460 + }
1.461 + }
1.462 + }
1.463 +
1.464 + /**
1.465 + * Acquire the compile_java_packages suffix rule for .java files.
1.466 + */
1.467 + public Map<String,Transformer> getJavaSuffixRule() {
1.468 + Map<String,Transformer> sr = new HashMap<String,Transformer>();
1.469 + sr.put(".java", compileJavaPackages);
1.470 + return sr;
1.471 + }
1.472 +
1.473 + /**
1.474 + * Acquire the copying transform.
1.475 + */
1.476 + public Transformer getCopier() {
1.477 + return copyFiles;
1.478 + }
1.479 +
1.480 + /**
1.481 + * If artifacts have gone missing, force a recompile of the packages
1.482 + * they belong to.
1.483 + */
1.484 + public void taintPackagesThatMissArtifacts() {
1.485 + for (Package pkg : prev.packages().values()) {
1.486 + for (File f : pkg.artifacts().values()) {
1.487 + if (!f.exists()) {
1.488 + // Hmm, the artifact on disk does not exist! Someone has removed it....
1.489 + // Lets rebuild the package.
1.490 + taintPackage(pkg.name(), ""+f+" is missing.");
1.491 + }
1.492 + }
1.493 + }
1.494 + }
1.495 +
1.496 + /**
1.497 + * Propagate recompilation through the dependency chains.
1.498 + * Avoid re-tainting packages that have already been compiled.
1.499 + */
1.500 + public void taintPackagesDependingOnChangedPackages(Set<String> pkgs, Set<String> recentlyCompiled) {
1.501 + for (Package pkg : prev.packages().values()) {
1.502 + for (String dep : pkg.dependencies()) {
1.503 + if (pkgs.contains(dep) && !recentlyCompiled.contains(pkg.name())) {
1.504 + taintPackage(pkg.name(), " its depending on "+dep);
1.505 + }
1.506 + }
1.507 + }
1.508 + }
1.509 +
1.510 + /**
1.511 + * Scan all output dirs for artifacts and remove those files (artifacts?)
1.512 + * that are not recognized as such, in the javac_state file.
1.513 + */
1.514 + public void removeUnidentifiedArtifacts() {
1.515 + Set<File> allKnownArtifacts = new HashSet<File>();
1.516 + for (Package pkg : prev.packages().values()) {
1.517 + for (File f : pkg.artifacts().values()) {
1.518 + allKnownArtifacts.add(f);
1.519 + }
1.520 + }
1.521 + // Do not forget about javac_state....
1.522 + allKnownArtifacts.add(javacState);
1.523 +
1.524 + for (File f : binArtifacts) {
1.525 + if (!allKnownArtifacts.contains(f)) {
1.526 + Log.debug("Removing "+f.getPath()+" since it is unknown to the javac_state.");
1.527 + f.delete();
1.528 + }
1.529 + }
1.530 + for (File f : headerArtifacts) {
1.531 + if (!allKnownArtifacts.contains(f)) {
1.532 + Log.debug("Removing "+f.getPath()+" since it is unknown to the javac_state.");
1.533 + f.delete();
1.534 + }
1.535 + }
1.536 + for (File f : gensrcArtifacts) {
1.537 + if (!allKnownArtifacts.contains(f)) {
1.538 + Log.debug("Removing "+f.getPath()+" since it is unknown to the javac_state.");
1.539 + f.delete();
1.540 + }
1.541 + }
1.542 + }
1.543 +
1.544 + /**
1.545 + * Remove artifacts that are no longer produced when compiling!
1.546 + */
1.547 + public void removeSuperfluousArtifacts(Set<String> recentlyCompiled) {
1.548 + // Nothing to do, if nothing was recompiled.
1.549 + if (recentlyCompiled.size() == 0) return;
1.550 +
1.551 + for (String pkg : now.packages().keySet()) {
1.552 + // If this package has not been recompiled, skip the check.
1.553 + if (!recentlyCompiled.contains(pkg)) continue;
1.554 + Collection<File> arts = now.artifacts().values();
1.555 + for (File f : fetchPrevArtifacts(pkg).values()) {
1.556 + if (!arts.contains(f)) {
1.557 + Log.debug("Removing "+f.getPath()+" since it is now superfluous!");
1.558 + if (f.exists()) f.delete();
1.559 + }
1.560 + }
1.561 + }
1.562 + }
1.563 +
1.564 + /**
1.565 + * Return those files belonging to prev, but not now.
1.566 + */
1.567 + private Set<Source> calculateRemovedSources() {
1.568 + Set<Source> removed = new HashSet<Source>();
1.569 + for (String src : prev.sources().keySet()) {
1.570 + if (now.sources().get(src) == null) {
1.571 + removed.add(prev.sources().get(src));
1.572 + }
1.573 + }
1.574 + return removed;
1.575 + }
1.576 +
1.577 + /**
1.578 + * Return those files belonging to now, but not prev.
1.579 + */
1.580 + private Set<Source> calculateAddedSources() {
1.581 + Set<Source> added = new HashSet<Source>();
1.582 + for (String src : now.sources().keySet()) {
1.583 + if (prev.sources().get(src) == null) {
1.584 + added.add(now.sources().get(src));
1.585 + }
1.586 + }
1.587 + return added;
1.588 + }
1.589 +
1.590 + /**
1.591 + * Return those files where the timestamp is newer.
1.592 + * If a source file timestamp suddenly is older than what is known
1.593 + * about it in javac_state, then consider it modified, but print
1.594 + * a warning!
1.595 + */
1.596 + private Set<Source> calculateModifiedSources() {
1.597 + Set<Source> modified = new HashSet<Source>();
1.598 + for (String src : now.sources().keySet()) {
1.599 + Source n = now.sources().get(src);
1.600 + Source t = prev.sources().get(src);
1.601 + if (prev.sources().get(src) != null) {
1.602 + if (t != null) {
1.603 + if (n.lastModified() > t.lastModified()) {
1.604 + modified.add(n);
1.605 + } else if (n.lastModified() < t.lastModified()) {
1.606 + modified.add(n);
1.607 + Log.warn("The source file "+n.name()+" timestamp has moved backwards in time.");
1.608 + }
1.609 + }
1.610 + }
1.611 + }
1.612 + return modified;
1.613 + }
1.614 +
1.615 + /**
1.616 + * Recursively delete a directory and all its contents.
1.617 + */
1.618 + private static void deleteContents(File dir) {
1.619 + if (dir != null && dir.exists()) {
1.620 + for (File f : dir.listFiles()) {
1.621 + if (f.isDirectory()) {
1.622 + deleteContents(f);
1.623 + }
1.624 + f.delete();
1.625 + }
1.626 + }
1.627 + }
1.628 +
1.629 + /**
1.630 + * Run the copy translator only.
1.631 + */
1.632 + public void performCopying(File binDir, Map<String,Transformer> suffixRules) {
1.633 + Map<String,Transformer> sr = new HashMap<String,Transformer>();
1.634 + for (Map.Entry<String,Transformer> e : suffixRules.entrySet()) {
1.635 + if (e.getValue() == copyFiles) {
1.636 + sr.put(e.getKey(), e.getValue());
1.637 + }
1.638 + }
1.639 + perform(binDir, sr);
1.640 + }
1.641 +
1.642 + /**
1.643 + * Run all the translators that translate into java source code.
1.644 + * I.e. all translators that are not copy nor compile_java_source.
1.645 + */
1.646 + public void performTranslation(File gensrcDir, Map<String,Transformer> suffixRules) {
1.647 + Map<String,Transformer> sr = new HashMap<String,Transformer>();
1.648 + for (Map.Entry<String,Transformer> e : suffixRules.entrySet()) {
1.649 + if (e.getValue() != copyFiles &&
1.650 + e.getValue() != compileJavaPackages) {
1.651 + sr.put(e.getKey(), e.getValue());
1.652 + }
1.653 + }
1.654 + perform(gensrcDir, sr);
1.655 + }
1.656 +
1.657 + /**
1.658 + * Compile all the java sources. Return true, if it needs to be called again!
1.659 + */
1.660 + public boolean performJavaCompilations(File binDir,
1.661 + String serverSettings,
1.662 + String[] args,
1.663 + Set<String> recentlyCompiled,
1.664 + boolean[] rcValue) {
1.665 + Map<String,Transformer> suffixRules = new HashMap<String,Transformer>();
1.666 + suffixRules.put(".java", compileJavaPackages);
1.667 + compileJavaPackages.setExtra(serverSettings);
1.668 + compileJavaPackages.setExtra(args);
1.669 +
1.670 + rcValue[0] = perform(binDir, suffixRules);
1.671 + recentlyCompiled.addAll(taintedPackages());
1.672 + clearTaintedPackages();
1.673 + boolean again = !packagesWithChangedPublicApis.isEmpty();
1.674 + taintPackagesDependingOnChangedPackages(packagesWithChangedPublicApis, recentlyCompiled);
1.675 + packagesWithChangedPublicApis = new HashSet<String>();
1.676 + return again && rcValue[0];
1.677 + }
1.678 +
1.679 + /**
1.680 + * Store the source into the set of sources belonging to the given transform.
1.681 + */
1.682 + private void addFileToTransform(Map<Transformer,Map<String,Set<URI>>> gs, Transformer t, Source s) {
1.683 + Map<String,Set<URI>> fs = gs.get(t);
1.684 + if (fs == null) {
1.685 + fs = new HashMap<String,Set<URI>>();
1.686 + gs.put(t, fs);
1.687 + }
1.688 + Set<URI> ss = fs.get(s.pkg().name());
1.689 + if (ss == null) {
1.690 + ss = new HashSet<URI>();
1.691 + fs.put(s.pkg().name(), ss);
1.692 + }
1.693 + ss.add(s.file().toURI());
1.694 + }
1.695 +
1.696 + /**
1.697 + * For all packages, find all sources belonging to the package, group the sources
1.698 + * based on their transformers and apply the transformers on each source code group.
1.699 + */
1.700 + private boolean perform(File outputDir, Map<String,Transformer> suffixRules)
1.701 + {
1.702 + boolean rc = true;
1.703 + // Group sources based on transforms. A source file can only belong to a single transform.
1.704 + Map<Transformer,Map<String,Set<URI>>> groupedSources = new HashMap<Transformer,Map<String,Set<URI>>>();
1.705 + for (Source src : now.sources().values()) {
1.706 + Transformer t = suffixRules.get(src.suffix());
1.707 + if (t != null) {
1.708 + if (taintedPackages.contains(src.pkg().name()) && !src.isLinkedOnly()) {
1.709 + addFileToTransform(groupedSources, t, src);
1.710 + }
1.711 + }
1.712 + }
1.713 + // Go through the transforms and transform them.
1.714 + for (Map.Entry<Transformer,Map<String,Set<URI>>> e : groupedSources.entrySet()) {
1.715 + Transformer t = e.getKey();
1.716 + Map<String,Set<URI>> srcs = e.getValue();
1.717 + // These maps need to be synchronized since multiple threads will be writing results into them.
1.718 + Map<String,Set<URI>> packageArtifacts = Collections.synchronizedMap(new HashMap<String,Set<URI>>());
1.719 + Map<String,Set<String>> packageDependencies = Collections.synchronizedMap(new HashMap<String,Set<String>>());
1.720 + Map<String,String> packagePublicApis = Collections.synchronizedMap(new HashMap<String,String>());
1.721 +
1.722 + boolean r = t.transform(srcs,
1.723 + visibleSrcs,
1.724 + visibleClasses,
1.725 + prev.dependents(),
1.726 + outputDir.toURI(),
1.727 + packageArtifacts,
1.728 + packageDependencies,
1.729 + packagePublicApis,
1.730 + 0,
1.731 + isIncremental(),
1.732 + numCores,
1.733 + out,
1.734 + err);
1.735 + if (!r) rc = false;
1.736 +
1.737 + for (String p : srcs.keySet()) {
1.738 + recompiledPackages.add(p);
1.739 + }
1.740 + // The transform is done! Extract all the artifacts and store the info into the Package objects.
1.741 + for (Map.Entry<String,Set<URI>> a : packageArtifacts.entrySet()) {
1.742 + Module mnow = now.findModuleFromPackageName(a.getKey());
1.743 + mnow.addArtifacts(a.getKey(), a.getValue());
1.744 + }
1.745 + // Extract all the dependencies and store the info into the Package objects.
1.746 + for (Map.Entry<String,Set<String>> a : packageDependencies.entrySet()) {
1.747 + Set<String> deps = a.getValue();
1.748 + Module mnow = now.findModuleFromPackageName(a.getKey());
1.749 + mnow.setDependencies(a.getKey(), deps);
1.750 + }
1.751 + // Extract all the pubapis and store the info into the Package objects.
1.752 + for (Map.Entry<String,String> a : packagePublicApis.entrySet()) {
1.753 + Module mprev = prev.findModuleFromPackageName(a.getKey());
1.754 + List<String> pubapi = Package.pubapiToList(a.getValue());
1.755 + Module mnow = now.findModuleFromPackageName(a.getKey());
1.756 + mnow.setPubapi(a.getKey(), pubapi);
1.757 + if (mprev.hasPubapiChanged(a.getKey(), pubapi)) {
1.758 + // Aha! The pubapi of this package has changed!
1.759 + // It can also be a new compile from scratch.
1.760 + if (mprev.lookupPackage(a.getKey()).existsInJavacState()) {
1.761 + // This is an incremental compile! The pubapi
1.762 + // did change. Trigger recompilation of dependents.
1.763 + packagesWithChangedPublicApis.add(a.getKey());
1.764 + Log.info("The pubapi of "+Util.justPackageName(a.getKey())+" has changed!");
1.765 + }
1.766 + }
1.767 + }
1.768 + }
1.769 + return rc;
1.770 + }
1.771 +
1.772 + /**
1.773 + * Utility method to recursively find all files below a directory.
1.774 + */
1.775 + private static Set<File> findAllFiles(File dir) {
1.776 + Set<File> foundFiles = new HashSet<File>();
1.777 + if (dir == null) {
1.778 + return foundFiles;
1.779 + }
1.780 + recurse(dir, foundFiles);
1.781 + return foundFiles;
1.782 + }
1.783 +
1.784 + private static void recurse(File dir, Set<File> foundFiles) {
1.785 + for (File f : dir.listFiles()) {
1.786 + if (f.isFile()) {
1.787 + foundFiles.add(f);
1.788 + } else if (f.isDirectory()) {
1.789 + recurse(f, foundFiles);
1.790 + }
1.791 + }
1.792 + }
1.793 +
1.794 + /**
1.795 + * Compare the calculate source list, with an explicit list, usually supplied from the makefile.
1.796 + * Used to detect bugs where the makefile and sjavac have different opinions on which files
1.797 + * should be compiled.
1.798 + */
1.799 + public void compareWithMakefileList(File makefileSourceList)
1.800 + throws ProblemException
1.801 + {
1.802 + // If we are building on win32 using for example cygwin the paths in the makefile source list
1.803 + // might be /cygdrive/c/.... which does not match c:\....
1.804 + // We need to adjust our calculated sources to be identical, if necessary.
1.805 + boolean mightNeedRewriting = File.pathSeparatorChar == ';';
1.806 +
1.807 + if (makefileSourceList == null) return;
1.808 +
1.809 + Set<String> calculatedSources = new HashSet<String>();
1.810 + Set<String> listedSources = new HashSet<String>();
1.811 +
1.812 + // Create a set of filenames with full paths.
1.813 + for (Source s : now.sources().values()) {
1.814 + // Don't include link only sources when comparing sources to compile
1.815 + if (!s.isLinkedOnly()) {
1.816 + calculatedSources.add(s.file().getPath());
1.817 + }
1.818 + }
1.819 + // Read in the file and create another set of filenames with full paths.
1.820 + try {
1.821 + BufferedReader in = new BufferedReader(new FileReader(makefileSourceList));
1.822 + for (;;) {
1.823 + String l = in.readLine();
1.824 + if (l==null) break;
1.825 + l = l.trim();
1.826 + if (mightNeedRewriting) {
1.827 + if (l.indexOf(":") == 1 && l.indexOf("\\") == 2) {
1.828 + // Everything a-ok, the format is already C:\foo\bar
1.829 + } else if (l.indexOf(":") == 1 && l.indexOf("/") == 2) {
1.830 + // The format is C:/foo/bar, rewrite into the above format.
1.831 + l = l.replaceAll("/","\\\\");
1.832 + } else if (l.charAt(0) == '/' && l.indexOf("/",1) != -1) {
1.833 + // The format might be: /cygdrive/c/foo/bar, rewrite into the above format.
1.834 + // Do not hardcode the name cygdrive here.
1.835 + int slash = l.indexOf("/",1);
1.836 + l = l.replaceAll("/","\\\\");
1.837 + l = ""+l.charAt(slash+1)+":"+l.substring(slash+2);
1.838 + }
1.839 + if (Character.isLowerCase(l.charAt(0))) {
1.840 + l = Character.toUpperCase(l.charAt(0))+l.substring(1);
1.841 + }
1.842 + }
1.843 + listedSources.add(l);
1.844 + }
1.845 + } catch (FileNotFoundException e) {
1.846 + throw new ProblemException("Could not open "+makefileSourceList.getPath()+" since it does not exist!");
1.847 + } catch (IOException e) {
1.848 + throw new ProblemException("Could not read "+makefileSourceList.getPath());
1.849 + }
1.850 +
1.851 + for (String s : listedSources) {
1.852 + if (!calculatedSources.contains(s)) {
1.853 + throw new ProblemException("The makefile listed source "+s+" was not calculated by the smart javac wrapper!");
1.854 + }
1.855 + }
1.856 +
1.857 + for (String s : calculatedSources) {
1.858 + if (!listedSources.contains(s)) {
1.859 + throw new ProblemException("The smart javac wrapper calculated source "+s+" was not listed by the makefiles!");
1.860 + }
1.861 + }
1.862 + }
1.863 +}
