Talk:Multithreaded Application Tutorial

From Free Pascal wiki
Jump to navigationJump to search


I want to use FPC to compile my WinApi multi-threaded application but after compilation and running I often receive SIGSEGV error. After debugging, the segmentation fault is ALWAYS in function "fpc_popaddrstack()".

The application uses hooks and CreateRemoteThread. Thus additional calls to "fpc_popaddrstack()" must not be made. The trick described in that article will not work properly. These calls shall be disabled.

I do not use "try-except" and "try-finally" blocks in my code and I don't need exception handling. My question is: How to supress the fpc_popaddrstack() or (better) all routines in unit ""? (any directive to disable it)

I will be very grateful for a solution to my problem. Xena 00:37, 16 February 2014 (CET)


I rewrote the example as an fpgui program (just for my own education). I don't know whether this is useful to anyone else. Anyway, find the example here,24217.0.html : dieselnutjob

Unfortunate sample code

The code sample given in "The TThread Class" is IMHO not very good.

The line fStatusText := 'TMyThread Running...'; has no effect, the text will never be displayed. There is also a mixup of programming strategies because at one time the author assigns to FStatusText, then he assigns to NewStatus, all for the same outcome. I'd like to slightly change the sample and put the FStatusText assignment and the call to synchronize into a setter of a property "Status", which is, IMHO, a far better implementation beeing more readable and avoiding those kind of error alltogether.

May I?