Re: VAX Ada: Diffs in tasking between v 1.5 and v 2.1?

[pa.dec.com!nntpd2.cxo.dec.com!bonmot!wallace@decwrl.dec.com (Richard Wal]

mwj@rz.uni-jena.de (Johannes Waldmann) writes:
: I have a prog which uses lots of tasks doing text_io.put/get on
: the terminal and on files and also reading and writing system mailboxes.
: The latter is implemented with QIO and AST entries.
: 
: The whole thing works fine when compiled with v 1.5, but stumbles with v 2.1.
: (It seems the keyboard wait for text_io.get blocks other tasks as well.)
: 
: I'd like to know some cure for this.. 

Johannes,

	Please post the smallest code example that demonstrates what you
are seeing.

	Please read Section 8.5 in your VAX Ada run-time reference
manual to be sure that you are not incurring any of the known blocking actions
that occur with TEXT_IO.PUT and GET routines.

	It is better to use the Digital supplied package TASKING_SERVICES
than to "roll-your-own" via QIO and AST calls. 


Aloha,
	Richard

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Richard Wallace
Digital Equipment Corporation
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