var@garp.East.Sun.COM (Var Garapetian, Sun-BOS Hardware [(508)671-0298]) (11/11/89)
Could someone tell me how or direct me to where in the documentation I can
find the way to increase the "stack size" in Turbo-C?
I am not an expert in C and am using the integrated environment for my
programs. I have my compiler set to COMPACT model. A programm I am
working on, was causing bizzare behaviour, so I turned the "Stack Overflow"
warning on. This indeed showd I was having stack problem.
I have been through the TC manuals and have found the _stklen variable which
sets the stack size, however don't know how to set it to a larger size.
If I type the following before main():
extern unsigned _stklen=6144;
It seems to set the stack to a larger value, but the linker gives the
following warning:
__stklen defined in module GPX.C is duplicated in module STKLEN
Any help will be very much appriciated...
============================================================================
Var Garapetian, Sun Microsystems, East-Coast Div.
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============================================================================smasters@gmuvax2.gmu.edu (Shawn Masters) (11/13/89)
You may want to try not defining it again. Include the #include <dos.h>, and then type `_stklen=xxxx'. The dos.h file should have all the declerations taken care of for you, which means, you just set the variable. Normally one would think that this would just be a linker option that you specify at link time, but all of Borland's manuals seems to state differently. Using the "COMPACT" model, you can have a stack upto 64k, which should satisfy most of your needs. Shawn Masters George Mason University SMASTERS@GMUVAX2.GMU.EDU
var@garp.East.Sun.COM (Var Garapetian, Sun-BOS Hardware [(508)671-0298]) (11/21/89)
>>Could someone tell me how or direct me to where in the documentation I can >>find the way to increase the "stack size" in Turbo-C? >>I am not an expert in C and am using the integrated environment for my >>programs. I have my compiler set to COMPACT model. A programm I am >>working on, was causing bizzare behaviour, so I turned the "Stack Overflow" >>warning on. This indeed showd I was having stack problem. >>I have been through the TC manuals and have found the _stklen variable which >>sets the stack size, however don't know how to set it to a larger size. >>If I type the following before main(): >> extern unsigned _stklen=6144; >>It seems to set the stack to a larger value, but the linker gives the >>following warning: >> __stklen defined in module GPX.C is duplicated in module STKLEN >>Any help will be very much appriciated... Thanks to all of you that replied. Most replies seemed to point out that my original approach was right, so I went back and poked a bit and found out previous stack overflows had some how corrupted a couple of data files which caused me to think the above didn't enlarge the stack. To make sure, I called Borland too and they gave me the same answer. So to sum it up: To extend the size of stack, put the following line before main() and ignore the linker warning! extern unsigned _stklen=nnnn; /* nnnn= required stack size. */ Thanks again to all those who replied. -var. ============================================================================ Var Garapetian, Sun Microsystems, East-Coast Div. UUCP: {hplabs,ihnp4,ucbvax,decvax,seismo}!sun!vgarapetian or {decvax}!eagle_snax!garp!var INTERNET: vgarapetian@East.Sun.Com GEnie: V.GARAPETIAN ============================================================================