[cpp-threads] Re: Exception propogation across threads

[Chuck Allison]

> *  Not positive, but I believe java defaults to thread-only  termination 
> but with a stack trace printed to the console. 
> http://java.sun.com/docs/books/jls/second_edition/html/exceptions.doc.html
> http://java.sun.com/j2se/1.5.0/docs/api/java/lang/ThreadGroup.html#uncaughtException(java.lang.Thread,%20java.lang.Throwable)

Here is more specific language from the Java 1.5 doc (note: every thread in 
Java belongs to a thread group):

"When a thread is about to terminate due to an uncaught exception the Java 
Virtual Machine will query the thread for its UncaughtExceptionHandler using 
Thread.getUncaughtExceptionHandler() and will invoke the handler's 
uncaughtException method, passing the thread and the exception as arguments. 
If a thread has not had its UncaughtExceptionHandler explicitly set, then 
its ThreadGroup object acts as its UncaughtExceptionHandler. If the 
ThreadGroup object has no special requirements for dealing with the 
exception, it can forward the invocation to the default uncaught exception 
handler"

It is the default uncaught exception handler that prints a stack trace to 
System.err and terminates the thread.

-- Chuck Allison.