/** Construct the JobQueue. This is private; use getJobQueue() to get the job queue instance. */
private JobQueue() {
// determine which compiler we should be using
String compilertype = Config.getPropString("bluej.compiler.type");
// even though it is specified to use internal, the preferred compiler for a
// system running Java 6 or greater is the JavaCompiler API
if (compilertype.equals("internal")) {
if (Config.isJava16()) {
try {
Class<?> c = Class.forName("bluej.compiler.CompilerAPICompiler");
compiler = (Compiler) c.newInstance();
} catch (Throwable e) {
Debug.message(
"Could not instantiate the compiler API compiler implementation; defaulting to old compiler");
compiler = new JavacCompilerInternal();
}
} else {
compiler = new JavacCompilerInternal();
}
} else if (compilertype.equals("javac")) {
compiler =
new JavacCompiler(Config.getJDKExecutablePath("bluej.compiler.executable", "javac"));
} else {
Debug.message(Config.getString("compiler.invalidcompiler"));
}
thread = new CompilerThread();
// Lower priority to improve GUI response time during compilation
int priority = Thread.currentThread().getPriority() - 1;
priority = Math.max(priority, Thread.MIN_PRIORITY);
thread.setPriority(priority);
thread.start();
}
/** Wait until the compiler job queue is empty, then return. */
public void waitForEmptyQueue() {
synchronized (thread) {
while (thread.isBusy()) {
try {
thread.wait();
} catch (InterruptedException ex) {
}
}
}
}
/**
* Adds a job to the compile queue.
*
* @param sources The files to compile
* @param observer Observer to be notified when compilation begins, errors/warnings, completes
* @param classPath The classpath to use to locate objects/source code
* @param destDir Destination for class files?
* @param suppressUnchecked Suppress "unchecked" warning in java 1.5
*/
public void addJob(
File[] sources,
CompileObserver observer,
BPClassLoader bpClassLoader,
File destDir,
boolean suppressUnchecked) {
List<String> options = new ArrayList<String>();
if (bpClassLoader.loadsForJavaMEproject()) {
String optionString = Config.getPropString(Compiler.JAVAME_COMPILER_OPTIONS, null);
Compiler.tokenizeOptionString(options, optionString);
}
String optionString = Config.getPropString(Compiler.COMPILER_OPTIONS, null);
Compiler.tokenizeOptionString(options, optionString);
thread.addJob(
new Job(sources, compiler, observer, bpClassLoader, destDir, suppressUnchecked, options));
}