On 25.08.2010 21:33, José Mejuto wrote:
Hello Lazarus-List,
Wednesday, August 25, 2010, 8:47:23 PM, you wrote:
SB> IsMultiThread is only a variable. Setting it is only useful recognized
SB> once FPC threading code is called. So instead of setting IsMultiThread
SB> to true you must create at least one thread in FPC (it can be a dummy
SB> thread that immediately terminates).
In Delphi setting IsMultithread to true is a must to use non TThread
threads. Taken from Embarcadero QA:
FPC is not Delphi and in this regard those two differ. The method
SysInitMultiThreading in rtl/win/systhrd.pas which initializes the
thread local storage is only called on two locations:
- when a new thread is created using FPC routines (BeginThread, TThread)
- when the unit system is initalized (using InitSystemThreads) AND if
the application is a library
If you don't create a thread the thread local storage won't be
initialized and thus threadvars won't work and thus the heap will not
work correctly.
Also the one thread creation is only for Unix systems, win32 does not
have this problem since a lot of time.
Windows DOES have this problem.
On the other hand, if Unix needs one thread creation then it should be
automagically done in the initialization section of cthreads, do not ?
This might indeed be a solution.
Regards,
Sven
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