Following the tutorial, I modify my code..
But when I call a dll method from C# application, it immediatly freeze.
Here the code:
faddll.h
#include <string>
#include <map>
#include <vector>
namespace cygwin
{
class padding {
public:
padding ();
~padding ();
private:
std::vector< char > _backup;
char *_stackbase, *_end;
char _padding[4096];
static padding *_main;
static DWORD _mainTID;
};
}
faddll.cc
#include <stdio.h>
#include <windows.h>
#include <faddll.h>
#define DllExport extern "C" __declspec(dllexport)
cygwin::padding *cygwin::padding::_main = NULL;
DWORD cygwin::padding::_mainTID = 0;
static std::ostream *out = NULL;
cygwin::padding::padding ()
{
_main = this;
_mainTID = GetCurrentThreadId ();
_end = _padding + sizeof (_padding);
char *stackbase;
#ifdef __GNUC__
__asm__ (
"movl %%fs:4, %0"
:"=r"(stackbase)
);
#else
__asm
{
mov eax, fs:[4];
mov stackbase, eax;
}
#endif
_stackbase = stackbase;
if ((_stackbase - _end) != 0)
{
size_t delta = (_stackbase - _end);
_backup.resize (delta);
memcpy (&(_backup[0]), _end, delta);
}
}
cygwin::padding::~padding ()
{
_main = NULL;
if (_backup.size ())
{
memcpy (_end, &(_backup[0]), _backup.size ());
}
}
DllExport int Somma(int a,int b);
int Somma(int a, int b)
{
cygwin::padding padding;
HMODULE h = LoadLibrary("cygwin1.dll");
void (*init)() = (void(*)()) GetProcAddress(h,"cygwin_dll_init");
init();
return a+b;
}
Dave Korn wrote:
>
> The path refers to a location in the sourceware.org CVS repository. You
> could check out the winsup module using CVS, you could use setup.exe to
> install the source for your current version of the Cygwin dll and look for
> it there, or you can just browse it through the sourceware.org cvsweb
> interface, at:
>
> http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/cygwin/how-cygtls-works.txt?
> cvsroot=src
>
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