You probably mean something like the attached test. What do you want to
know about it ? I can run it on x86 and on ARM.
Danny
On Mon, 2009-06-08 at 18:16 +0900, Pawel Veselov wrote:
> Should the prologue code be rewritten to have
> a thread created before main() is called?
>
> Also, it'd be interesting to see where are the
> new thread stacks are created, I've looked
> at how other OSes do that, and they just
> simply create a new segment. Since m$ seem
> to not give you stack segment for the stack
> completely, it should allocate thread stacks
> somewhere in that stack segment.
>
>
> On Mon, Jun 8, 2009 at 6:06 PM, Johnny Willemsen <jwillem...@remedy.nl> wrote:
> > Hi,
> >
> >> gcc code may user more of the stack than whatever code that msvc
> >> produces, thus
> >> dipping into the red zone more often. So far, I don't see how the 64k
> >> limit of the
> >> stack on the main thread can be avoided at all..
> >
> > The only option I see (which also Danny proposed) is to create a worker
> > thread, use that as main thread, then we can control the stack size.
> >
> > I will rewrite a few tests at our side to get some objects from the heap
> > instead of from the stack.
> >
> > Johnny
> >
> >
>
--
Danny Backx ; danny.backx - at - scarlet.be ; http://danny.backx.info
#include <stdio.h>
#include <string.h>
#include <windows.h>
#include <winbase.h>
#define STACK_SIZE 33000
#define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000
void Print(char *s);
char outbuf[32];
void more(void)
{
char buf[STACK_SIZE];
Print("In deeper function\n");
}
void large(void)
{
char buf[STACK_SIZE];
sprintf(outbuf, "Size : %d\n", sizeof(buf));
Print(outbuf);
memset(&buf, 0, STACK_SIZE);
Print("After memset\n");
more();
Print("returning\n");
}
DWORD thread(void *p)
{
Print("begin thread\n");
large();
Print("end thread\n");
}
int main(int argc, char *argv[])
{
HANDLE t;
Print("In main\n");
t = CreateThread(NULL, 0x100000,
&thread,
NULL,
STACK_SIZE_PARAM_IS_A_RESERVATION,
NULL);
WaitForSingleObject(t, 10000);
return 0;
}
void Print(char *s)
{
#ifdef WIN32
HANDLE h;
DWORD r;
h = CreateFile(L"/temp/out.txt", GENERIC_WRITE, 0, NULL,
OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_WRITE_THROUGH, NULL);
SetFilePointer(h, 0L, NULL, FILE_END);
WriteFile(h, s, strlen(s), &r, NULL);
CloseHandle(h);
#else
#endif
}
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