In our previous episode, Anthony Walter said: > I was looking at threading support in the System unit and also in the > TThread class. > > According to the documentation at > http://www.freepascal.org/docs-html/rtl/system/closethread.html > > CloseThread must be called on any thread started with BeginThread. It must > be called after the thread has ended (either by exiting the thread function > or after calling EndThread).
Yes, Closethread closes possible handles deallocating anything that must remain allocated to read out thread results. > Looking at the TThread class, which does indeed use BeginThread in > TThread.SysCreate (tthread.inc), I see no corresponding call the > CloseThread. I grepped the entire fpc source tree and found no references > anywhere to any code which calls CloseThread. _BUT_ tthread.inc's are target dependent and thus don't necessarily go through the platform independent procedural "beginthread" interface. (actually, some parts of the procedural interface, including chlosethread were only crafted _after_ tthreads completion, when it turned out that the procedural interface had leaks, and the tthread not) E.g. the Closehandle at rtl/win/tthread.inc:35 does the same thing. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
