private static synchronized JavacServerClient ensureJavacServerLaunched(CompileContext context)
throws Exception {
final ExternalJavacDescriptor descriptor = ExternalJavacDescriptor.KEY.get(context);
if (descriptor != null) {
return descriptor.client;
}
// start server here
final int port = findFreePort();
final int heapSize = getJavacServerHeapSize(context);
// defaulting to the same jdk that used to run the build process
String javaHome = SystemProperties.getJavaHome();
int javaVersion = convertToNumber(SystemProperties.getJavaVersion());
for (JpsSdk<?> sdk : context.getProjectDescriptor().getProjectJavaSdks()) {
final String version = sdk.getVersionString();
final int ver = convertToNumber(version);
if (ver > javaVersion) {
javaVersion = ver;
javaHome = sdk.getHomePath();
}
}
final BaseOSProcessHandler processHandler =
JavacServerBootstrap.launchJavacServer(
javaHome, heapSize, port, Utils.getSystemRoot(), getCompilationVMOptions(context));
final JavacServerClient client = new JavacServerClient();
try {
client.connect("127.0.0.1", port);
} catch (Throwable ex) {
processHandler.destroyProcess();
throw new Exception("Failed to connect to external javac process: ", ex);
}
ExternalJavacDescriptor.KEY.set(context, new ExternalJavacDescriptor(processHandler, client));
return client;
}
private boolean compileJava(
final CompileContext context,
ModuleChunk chunk,
Collection<File> files,
Collection<File> classpath,
Collection<File> platformCp,
Collection<File> sourcePath,
DiagnosticOutputConsumer diagnosticSink,
final OutputFileConsumer outputSink)
throws Exception {
final TasksCounter counter = new TasksCounter();
COUNTER_KEY.set(context, counter);
final JpsJavaExtensionService javaExt = JpsJavaExtensionService.getInstance();
final JpsJavaCompilerConfiguration compilerConfig =
javaExt.getCompilerConfiguration(context.getProjectDescriptor().getProject());
assert compilerConfig != null;
final Set<JpsModule> modules = chunk.getModules();
ProcessorConfigProfile profile = null;
if (modules.size() == 1) {
final JpsModule module = modules.iterator().next();
profile = compilerConfig.getAnnotationProcessingProfile(module);
} else {
// perform cycle-related validations
Pair<String, LanguageLevel> pair = null;
for (JpsModule module : modules) {
final LanguageLevel moduleLevel = javaExt.getLanguageLevel(module);
if (pair == null) {
pair = Pair.create(module.getName(), moduleLevel); // first value
} else {
if (!Comparing.equal(pair.getSecond(), moduleLevel)) {
final String message =
"Modules "
+ pair.getFirst()
+ " and "
+ module.getName()
+ " must have the same language level because of cyclic dependencies between them";
diagnosticSink.report(new PlainMessageDiagnostic(Diagnostic.Kind.ERROR, message));
return true;
}
}
}
// check that all chunk modules are excluded from annotation processing
for (JpsModule module : modules) {
final ProcessorConfigProfile prof = compilerConfig.getAnnotationProcessingProfile(module);
if (prof.isEnabled()) {
final String message =
"Annotation processing is not supported for module cycles. Please ensure that all modules from cycle ["
+ chunk.getName()
+ "] are excluded from annotation processing";
diagnosticSink.report(new PlainMessageDiagnostic(Diagnostic.Kind.ERROR, message));
return true;
}
}
}
final Map<File, Set<File>> outs = buildOutputDirectoriesMap(context, chunk);
final List<String> options = getCompilationOptions(context, chunk, profile);
final ClassProcessingConsumer classesConsumer =
new ClassProcessingConsumer(context, outputSink);
if (LOG.isDebugEnabled()) {
LOG.debug(
"Compiling chunk ["
+ chunk.getName()
+ "] with options: \""
+ StringUtil.join(options, " ")
+ "\"");
}
try {
final boolean rc;
if (USE_EMBEDDED_JAVAC) {
final boolean useEclipse = useEclipseCompiler(context);
rc =
JavacMain.compile(
options,
files,
classpath,
platformCp,
sourcePath,
outs,
diagnosticSink,
classesConsumer,
context.getCancelStatus(),
useEclipse);
} else {
final JavacServerClient client = ensureJavacServerLaunched(context);
final RequestFuture<JavacServerResponseHandler> future =
client.sendCompileRequest(
options,
files,
classpath,
platformCp,
sourcePath,
outs,
diagnosticSink,
classesConsumer);
while (!future.waitFor(100L, TimeUnit.MILLISECONDS)) {
if (context.getCancelStatus().isCanceled()) {
future.cancel(false);
}
}
rc = future.getMessageHandler().isTerminatedSuccessfully();
}
return rc;
} finally {
counter.await();
}
}