I'd like to use mmap function in windows, here is the code 
use strict;
use warnings;
use Fcntl;
use Inline C => Config => LIBS => '-lkernel32', BUILD_NOISY => 1, type
+maps => 'typemap';
use Inline C => <<'END_OF_C_CODE';

#include <windows.h>
#include <winbase.h>
void*
map_region(int filehandle, DWORD size, DWORD prot){
    HANDLE hMap = CreateFileMapping((HANDLE)filehandle, NULL, prot, 0,
+ size, NULL);
    LPVOID addr = MapViewOfFile(hMap, FILE_MAP_ALL_ACCESS, 0, 0, size)
+;
    CloseHandle(hMap);
    return addr;
}
int
unmap_region(void* addr, DWORD size){
    return UnmapViewOfFile(addr);
}
END_OF_C_CODE
my $test_file = 'test_mmap.bin';

sysopen(my $fh, $test_file, O_RDWR|O_CREAT|O_TRUNC)
  or die "can't open: $!";
binmode $fh;
my $size = 4096;
my $addr = map_region(fileno($fh), $size, 0x04)
  or die "mmap failed!!:  $^E ";

my $test_str = "Hello Windows mmap!";
syswrite($fh, $test_str);

unmap_region($addr, $size) or die "fail to unmap";

[download]
the code could pass the check, but when I run it, it throws: "mmap failed!!: The handle is invalid at ccc.pl line 29." It seems that the handle I passed from $fh is not correct. My question is what the windows Handle is, and how I get in perl?

Beside: here is the typemap 

BOOL            T_IV
LONG            T_IV
HANDLE            T_IV
HWND                    T_IV
HMENU                   T_IV
HKEY            T_IV
SECURITY_INFORMATION    T_UV
DWORD            T_UV
UINT                    T_UV
REGSAM            T_UV
WPARAM                  T_UV
LPARAM                  T_IV
LPVOID                  T_UV
HANDLE                  T_UV
SIZE_T                  T_UV
DibSect *         O_OBJECT

######################################################################
+#######
INPUT
T_UV
    $var = ($type)SvUV($arg)

######################################################################
+#######
OUTPUT
T_UV
    sv_setuv($arg, (UV)$var);

[download]

In reply to what is exactly HANDL is by Anonymous Monk

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