[cpp-threads] pthreads cancellation

[Alexander Terekhov]

On 4/26/05, Boehm, Hans <hans.boehm at hp.com> wrote:
[...]
> Java got rid of anything resembling asynchronous cancellation

Really?

http://www.rtj.org/rtsj-V1.0.pdf

"The interrupt() method in java.lang.Thread provides rudimentary 
 asynchronous communication by setting a pollable/resettable flag 
 in the target  thread, and by throwing a synchronous exception  
 when the target thread is blocked at an invocation of wait(), 
 sleep(), or join(). This specification extends the effect of 
 Thread.interrupt() and adds an overloaded version in 
 RealtimeThread, offering a more comprehensive and non-polling 
 asynchronous execution control facility. It is based on throwing 
 and propagating exceptions that, though asynchronous, are 
 deferred where necessary in order to avoid data structure 
 corruption.

 [...]

 When a method is declared with AsynchronouslyInterruptedException 
 in its throws clause the platform is expected to asynchronously 
 throw this exception if RealtimeThread.interrupt() is called while 
 the method is executing, or if such an interrupt is pending any 
 time control returns to the method. The interrupt is not thrown 
 while any methods it invokes are executing, unless they are, in 
 turn, declared to throw the exception. This is intended to allow 
 long-running computations to be terminated without the overhead 
 or latency of polling with java.lang.Thread.interrupted()"

Please visit also

http://www.codesourcery.com/archives/c++-pthreads/msg00124.html
http://www.codesourcery.com/archives/c++-pthreads/msg00144.html

regards,
alexander.