X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=ext%2FDynaLoader%2Fdlutils.c;h=bb06fe4b20d02599eb51bbd31ea73051e487cd1a;hb=a8c08ecdc5ffec9869657a967edfe7b74a713a27;hp=0ce082182c33432b9c321fa891a3675f9e2c1ded;hpb=a0d0e21ea6ea90a22318550944fe6cb09ae10cda;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/ext/DynaLoader/dlutils.c b/ext/DynaLoader/dlutils.c
index 0ce0821..bb06fe4 100644
--- a/ext/DynaLoader/dlutils.c
+++ b/ext/DynaLoader/dlutils.c
@@ -3,83 +3,104 @@
  * Currently this file is simply #included into dl_*.xs/.c files.
  * It should really be split into a dlutils.h and dlutils.c
  *
+ * Modified:
+ * 29th Feburary 2000 - Alan Burlison: Added functionality to close dlopen'd
+ *                      files when the interpreter exits
  */
 
 
 /* pointer to allocated memory for last error message */
 static char *LastError  = (char*)NULL;
 
+/* flag for immediate rather than lazy linking (spots unresolved symbol) */
+static int dl_nonlazy = 0;
+
+#ifdef DL_LOADONCEONLY
+static HV *dl_loaded_files = Nullhv;	/* only needed on a few systems */
+#endif
 
 
 #ifdef DEBUGGING
-/* currently not connected to $DynaLoader::dl_error but should be */
-static int dl_debug = 0;
-#define DLDEBUG(level,code)	if(dl_debug>=level){ code; }
+static int dl_debug = 0;	/* value copied from $DynaLoader::dl_debug */
+#define DLDEBUG(level,code)	if (dl_debug>=level) { code; }
 #else
 #define DLDEBUG(level,code)
 #endif
 
+#ifdef DL_UNLOAD_ALL_AT_EXIT
+/* Close all dlopen'd files */
+static void
+dl_unload_all_files(pTHXo_ void *unused)
+{
+    CV *sub;
+    AV *dl_librefs;
+    SV *dl_libref;
+
+    if ((sub = get_cv("DynaLoader::dl_unload_file", FALSE)) != NULL) {
+        dl_librefs = get_av("DynaLoader::dl_librefs", FALSE);
+        while ((dl_libref = av_pop(dl_librefs)) != &PL_sv_undef) {
+           dSP;
+           ENTER;
+           SAVETMPS;
+           PUSHMARK(SP);
+           XPUSHs(sv_2mortal(dl_libref));
+           PUTBACK;
+           call_sv((SV*)sub, G_DISCARD | G_NODEBUG);
+           FREETMPS;
+           LEAVE;
+        }
+    }
+}
+#endif
 
 static void
-dl_generic_private_init()	/* called by dl_*.xs dl_private_init() */
+dl_generic_private_init(pTHXo)	/* called by dl_*.xs dl_private_init() */
 {
+    char *perl_dl_nonlazy;
 #ifdef DEBUGGING
-    char *perl_dl_debug = getenv("PERL_DL_DEBUG");
-    if (perl_dl_debug)
-	dl_debug = atoi(perl_dl_debug);
+    SV *sv = get_sv("DynaLoader::dl_debug", 0);
+    dl_debug = sv ? SvIV(sv) : 0;
+#endif
+    if ( (perl_dl_nonlazy = getenv("PERL_DL_NONLAZY")) != NULL )
+	dl_nonlazy = atoi(perl_dl_nonlazy);
+    if (dl_nonlazy)
+	DLDEBUG(1,PerlIO_printf(Perl_debug_log, "DynaLoader bind mode is 'non-lazy'\n"));
+#ifdef DL_LOADONCEONLY
+    if (!dl_loaded_files)
+	dl_loaded_files = newHV(); /* provide cache for dl_*.xs if needed */
+#endif
+#ifdef DL_UNLOAD_ALL_AT_EXIT
+    call_atexit(&dl_unload_all_files, (void*)0);
 #endif
 }
 
 
 /* SaveError() takes printf style args and saves the result in LastError */
-#ifdef STANDARD_C
 static void
-SaveError(char* pat, ...)
-#else
-/*VARARGS0*/
-static void
-SaveError(pat, va_alist)
-    char *pat;
-    va_dcl
-#endif
+SaveError(pTHXo_ char* pat, ...)
 {
     va_list args;
+    SV *msv;
     char *message;
-    int len;
+    STRLEN len;
 
-    /* This code is based on croak/warn but I'm not sure where mess() */
-    /* gets its buffer space from! */
+    /* This code is based on croak/warn, see mess() in util.c */
 
-#ifdef I_STDARG
     va_start(args, pat);
-#else
-    va_start(args);
-#endif
-    message = mess(pat, &args);
+    msv = vmess(pat, &args);
     va_end(args);
 
-    len = strlen(message) + 1 ;	/* include terminating null char */
+    message = SvPV(msv,len);
+    len++;		/* include terminating null char */
 
     /* Allocate some memory for the error message */
     if (LastError)
         LastError = (char*)saferealloc(LastError, len) ;
     else
-        LastError = safemalloc(len) ;
+        LastError = (char *) safemalloc(len) ;
 
     /* Copy message into LastError (including terminating null char)	*/
     strncpy(LastError, message, len) ;
-    DLDEBUG(2,fprintf(stderr,"DynaLoader: stored error msg '%s'\n",LastError));
-}
-
-
-/* prepend underscore to s. write into buf. return buf. */
-char *
-dl_add_underscore(s, buf)
-char *s;
-char *buf;
-{
-    *buf = '_';
-    (void)strcpy(buf + 1, s);
-    return buf;
+    DLDEBUG(2,PerlIO_printf(Perl_debug_log, "DynaLoader: stored error msg '%s'\n",LastError));
 }