Juha Manninen (gmail) wrote:

so I rebuilt Lazarus with -dUseCThreads. Now it works perfectly!

Question: why is there need for "UseCThreads" define. Isn't cthreads needed always when using a *nix system?

Threads have been stable on x86 Linux for a few years, but rather less so on some other processors if I remember correctly. Also I don't know what the situation is for other unix implementations such as Solaris. I'd suggest that you not make any changes that rely on having threads available: having an optional enhancement that can benefit from them is a different matter.

Furthermore, I'd note that Lazarus is an IDE, and as such is overwhelmingly visual. While there is any possibility that Lazarus itself or the underlying widget sets and GUI implementations are not entirely thread-safe, I think that any mandatory adoption of threads should be attempted with extreme caution.

Having said that, it'll have to be done sometime. But tracking down thread-related problems is extremely difficult, and I'm certainly not the one who's going to risk breaking things.

--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]

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