The same question that I posted on bugtracker: Linux, BSD, Unix, has another threaddriver than cthreads? If no, why not make cthreads unit the default threaddriver for Unix?
2014-07-25 7:33 GMT-03:00 Michael Van Canneyt <mich...@freepascal.org>: > > > On Fri, 25 Jul 2014, Mark Morgan Lloyd wrote: > > Michael Van Canneyt wrote: >> >>> On Fri, 25 Jul 2014, Juha Manninen wrote: >>> >>> I was asked why a threaded application compiles on Linux without "uses >>>> cthreads" but it does not work. >>>> cthreads must _always_ be added to uses section. >>>> I had no answer to that. IMO such errors should be trapped at >>>> compile-time, not at run-time. >>>> Could it be fixed somehow? >>>> >>> >>> No, because there is no way to detect that threads are actually used in >>> the program. >>> >> >> I will add a remark in the classes unit TThread class documentation, to >>> make it even more obvious. >>> >> >> Is there scope for improving the error message? >> >> Is there a scenario in which a program that sometimes uses threads (e.g. >> if it realises it's being asked to do a big job which can be parallelised) >> could start without giving the error message? This would make the situation >> more serious, since it would require that the programmer did some /real/ >> testing before shipping his code :-) >> > > Not sure what you mean. > > The error only appears if you call a function that relies on the threading > manager, never at the start of the program. It's slightly more complicated > than this, but it boils down to that. > > So the fact that the program started doesn't mean there won't be an error > further down the line. But that is IMHO no different from many other > programming errors, such as trying to save preferences in a file in a > directory that doesn't exist. You should always test all cases. > > > Michael. > > _______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal > -- The best regards, Fabio Luis Girardi PascalSCADA Project http://sourceforge.net/projects/pascalscada http://www.pascalscada.com
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