[fpc-pascal]Crashes with multithreading
Michael Van Canneyt
michael.vancanneyt at wisa.be
Mon Dec 11 16:39:20 CET 2000
On Mon, 11 Dec 2000, Andrey Kubyshev wrote:
> Hello Jonas,
> JM> FPC's heap manager and IO functions (writeln/readln) are *not* thread
> JM> safe. That's probably what's causing the crashes. Add the cmem unit (from
> JM> the "packages" units) as the first unit in your "uses" clause, then
> JM> you're at least safe on the memory management side. You can't use heaptrc
> JM> with it though.
> Thank you for such fast reply. But if IO operations not thread safe,
> does it means that all file operations also unsafe ?
Shortly said: Yes. The only solution for this is to use separate
streams in each thread, then it'll work fine.
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