Re: Win32 Thread safetyness

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От Magnus Hagander
Тема Re: Win32 Thread safetyness
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Msg-id 6BCB9D8A16AC4241919521715F4D8BCE6C7912@algol.sollentuna.se
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Ответ на Win32 Thread safetyness  ("Dave Page" <dpage@vale-housing.co.uk>)
Ответы Re: Win32 Thread safetyness  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
> Unfortunately I just found that we still cannot build in
> thread safety mode on Windows, due to an error on my part -
> specifically, I concentrated on libpq, not realising that
> ecpglib is also thread aware.
>
> It seems that ecpglib uses far more of pthreads than libpq
> does, so our mini implementation used in libpq just won't cut
> it. I've bitten the bullet (well, more of a jelly bean
> actually) and started rewriting things to use the official
> win32 pthreads library, however I ran into an error that I'm
> not sure about:

Yuck. This sucks :-( I was very much hoping we could avoid an other
build *and* runtime dependency. Which will be a cascading runtime
dependency to each and every program that uses libpq. double-:-(

Anyway, one other concern: Do we *know* how this will interact with
win32 native threads? Meaning will a libpq built against the pthreads
library be safe for *native threads*. Because you can definitly expect
most of the win32 apps that need thread-safeness to be usign native
threads - I've so far not come across a single program that's native
win32 that uses pthreads, whereas almost every program written uses
native threads (though most often not in a way that would need a
threadsafe libpq)


//Magnus


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