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 static int
  45 dl_static_linked(char *filename)
  46 {
  47     char **p;
  48     for (p = staticlinkmodules; *p;p++) {
  49         if (strstr(filename, *p)) return 1;
  50     };
  51     return 0;
  52 }
  53
  54 MODULE = DynaLoader     PACKAGE = DynaLoader
  55
  56 BOOT:
  57     (void)dl_private_init(THIS);
  58
  59 void *
  60 dl_load_file(filename,flags=0)
  61     char *              filename
  62     int                 flags
  63     PREINIT:
  64     CODE:
  65     DLDEBUG(1,PerlIO_printf(PerlIO_stderr(),"dl_load_file(%s):\n", filename));
  66     if (dl_static_linked(filename) == 0)
  67         RETVAL = (void*) LoadLibraryEx(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH ) ;
  68     else
  69         RETVAL = (void*) GetModuleHandle(NULL);
  70     DLDEBUG(2,PerlIO_printf(PerlIO_stderr()," libref=%x\n", RETVAL));
  71     ST(0) = sv_newmortal() ;
  72     if (RETVAL == NULL)
  73         SaveError(THIS_ "%d",GetLastError()) ;
  74     else
  75         sv_setiv( ST(0), (IV)RETVAL);
  76
  77
  78 void *
  79 dl_find_symbol(libhandle, symbolname)
  80     void *      libhandle
  81     char *      symbolname
  82     CODE:
  83     DLDEBUG(2,PerlIO_printf(PerlIO_stderr(),"dl_find_symbol(handle=%x, symbol=%s)\n",
  84                       libhandle, symbolname));
  85     RETVAL = (void*) GetProcAddress((HINSTANCE) libhandle, symbolname);
  86     DLDEBUG(2,PerlIO_printf(PerlIO_stderr(),"  symbolref = %x\n", RETVAL));
  87     ST(0) = sv_newmortal() ;
  88     if (RETVAL == NULL)
  89         SaveError(THIS_ "%d",GetLastError()) ;
  90     else
  91         sv_setiv( ST(0), (IV)RETVAL);
  92
  93
  94 void
  95 dl_undef_symbols()
  96     PPCODE:
  97
  98
  99
 100 # These functions should not need changing on any platform:
 101
 102 void
 103 dl_install_xsub(perl_name, symref, filename="$Package")
 104     char *              perl_name
 105     void *              symref
 106     char *              filename
 107     CODE:
 108     DLDEBUG(2,PerlIO_printf(PerlIO_stderr(),"dl_install_xsub(name=%s, symref=%x)\n",
 109                       perl_name, symref));
 110     ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)(CPERLarg_ CV*))symref, filename)));
 111
 112
 113 char *
 114 dl_error()
 115     CODE:
 116     RETVAL = LastError ;
 117     OUTPUT:
 118     RETVAL
 119
 120 # end.