win32/dl_win32.xs

   1 /* dl_win32.xs
   2  *
   3  * Platform:    Win32 (Windows NT/Windows 95)
   4  * Author:      Wei-Yuen Tan (wyt@hip.com)
   5  * Created:     A warm day in June, 1995
   6  *
   7  * Modified:
   8  *    August 23rd 1995 - rewritten after losing everything when I
   9  *                       wiped off my NT partition (eek!)
  10  */
  11
  12 /* Porting notes:
  13
  14 I merely took Paul's dl_dlopen.xs, took out extraneous stuff and
  15 replaced the appropriate SunOS calls with the corresponding Win32
  16 calls.
  17
  18 */
  19
  20 #define WIN32_LEAN_AND_MEAN
  21 #ifdef __GNUC__
  22 #define Win32_Winsock
  23 #endif
  24 #include <windows.h>
  25 #include <string.h>
  26
  27 #include "EXTERN.h"
  28 #include "perl.h"
  29
  30 #ifdef PERL_OBJECT
  31 #define NO_XSLOCKS
  32 #endif  /* PERL_OBJECT */
  33
  34 #include "XSUB.h"
  35
  36 #include "dlutils.c"    /* SaveError() etc      */
  37
  38 static void
  39 dl_private_init(CPERLarg)
  40 {
  41     (void)dl_generic_private_init(THIS);
  42 }
  43
  44 #ifdef PERL_OBJECT
  45 #define dl_static_linked(x) 0
  46 #else
  47 static int
  48 dl_static_linked(char *filename)
  49 {
  50     char **p;
  51     for (p = staticlinkmodules; *p;p++) {
  52         if (strstr(filename, *p)) return 1;
  53     };
  54     return 0;
  55 }
  56 #endif
  57
  58 MODULE = DynaLoader     PACKAGE = DynaLoader
  59
  60 BOOT:
  61     (void)dl_private_init();
  62
  63 void *
  64 dl_load_file(filename,flags=0)
  65     char *              filename
  66     int                 flags
  67     PREINIT:
  68     CODE:
  69     DLDEBUG(1,PerlIO_printf(PerlIO_stderr(),"dl_load_file(%s):\n", filename));
  70     if (dl_static_linked(filename) == 0)
  71         RETVAL = (void*) LoadLibraryEx(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH ) ;
  72     else
  73         RETVAL = (void*) GetModuleHandle(NULL);
  74     DLDEBUG(2,PerlIO_printf(PerlIO_stderr()," libref=%x\n", RETVAL));
  75     ST(0) = sv_newmortal() ;
  76     if (RETVAL == NULL)
  77         SaveError("%d",GetLastError()) ;
  78     else
  79         sv_setiv( ST(0), (IV)RETVAL);
  80
  81
  82 void *
  83 dl_find_symbol(libhandle, symbolname)
  84     void *      libhandle
  85     char *      symbolname
  86     CODE:
  87     DLDEBUG(2,PerlIO_printf(PerlIO_stderr(),"dl_find_symbol(handle=%x, symbol=%s)\n",
  88                       libhandle, symbolname));
  89     RETVAL = (void*) GetProcAddress((HINSTANCE) libhandle, symbolname);
  90     DLDEBUG(2,PerlIO_printf(PerlIO_stderr(),"  symbolref = %x\n", RETVAL));
  91     ST(0) = sv_newmortal() ;
  92     if (RETVAL == NULL)
  93         SaveError("%d",GetLastError()) ;
  94     else
  95         sv_setiv( ST(0), (IV)RETVAL);
  96
  97
  98 void
  99 dl_undef_symbols()
 100     PPCODE:
 101
 102
 103
 104 # These functions should not need changing on any platform:
 105
 106 void
 107 dl_install_xsub(perl_name, symref, filename="$Package")
 108     char *              perl_name
 109     void *              symref
 110     char *              filename
 111     CODE:
 112     DLDEBUG(2,PerlIO_printf(PerlIO_stderr(),"dl_install_xsub(name=%s, symref=%x)\n",
 113                       perl_name, symref));
 114     ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)(CV*))symref, filename)));
 115
 116
 117 char *
 118 dl_error()
 119     CODE:
 120     RETVAL = LastError ;
 121     OUTPUT:
 122     RETVAL
 123
 124 # end.