/* dl_vms.xs
*
- * Platform: OpenVMS, VAX or AXP
- * Author: Charles Bailey bailey@genetics.upenn.edu
- * Revised: 12-Dec-1994
+ * Platform: OpenVMS, VAX or AXP or IA64
+ * Author: Charles Bailey bailey@newman.upenn.edu
+ * Revised: See http://public.activestate.com/cgi-bin/perlbrowse
*
* Implementation Note
* This section is added as an aid to users and DynaLoader developers, in
#include "perl.h"
#include "XSUB.h"
-#include "dlutils.c" /* dl_debug, LastError; SaveError not used */
-/* N.B.:
- * dl_debug and LastError are static vars; you'll need to deal
- * with them appropriately if you need context independence
- */
-
#include <descrip.h>
#include <fscndef.h>
#include <lib$routines.h>
#include <ssdef.h>
#include <starlet.h>
+#if defined(VMS_WE_ARE_CASE_SENSITIVE)
+#define DL_CASE_SENSITIVE 1<<4
+#else
+#define DL_CASE_SENSITIVE 0
+#endif
+
typedef unsigned long int vmssts;
struct libref {
struct dsc$descriptor_s defspec;
};
-/* Static data for dl_expand_filespec() - This is static to save
+typedef struct {
+ AV * x_require_symbols;
+/* "Static" data for dl_expand_filespec() - This is static to save
* initialization on each call; if you need context-independence,
* just make these auto variables in dl_expandspec() and dl_load_file()
*/
-static char dlesa[NAM$C_MAXRSS], dlrsa[NAM$C_MAXRSS];
-static struct FAB dlfab;
-static struct NAM dlnam;
+ char x_esa[NAM$C_MAXRSS];
+ char x_rsa[NAM$C_MAXRSS];
+ struct FAB x_fab;
+ struct NAM x_nam;
+} my_cxtx_t; /* this *must* be named my_cxtx_t */
-/* $PutMsg action routine - records error message in LastError */
+#define DL_CXT_EXTRA /* ask for dl_cxtx to be defined in dlutils.c */
+#include "dlutils.c" /* dl_debug, dl_last_error; SaveError not used */
+
+#define dl_require_symbols (dl_cxtx.x_require_symbols)
+#define dl_esa (dl_cxtx.x_esa)
+#define dl_rsa (dl_cxtx.x_rsa)
+#define dl_fab (dl_cxtx.x_fab)
+#define dl_nam (dl_cxtx.x_nam)
+
+/* $PutMsg action routine - records error message in dl_last_error */
static vmssts
-copy_errmsg(msg,unused)
- struct dsc$descriptor_s * msg;
- vmssts unused;
+copy_errmsg(struct dsc$descriptor_s *msg, vmssts unused)
{
+ dTHX;
+ dMY_CXT;
if (*(msg->dsc$a_pointer) == '%') { /* first line */
- if (LastError)
- strncpy((LastError = saferealloc(LastError,msg->dsc$w_length)),
- msg->dsc$a_pointer, msg->dsc$w_length);
- else
- strncpy((LastError = safemalloc(msg->dsc$w_length)),
- msg->dsc$a_pointer, msg->dsc$w_length);
- return 0;
+ sv_setpvn(MY_CXT.x_dl_last_error, msg->dsc$a_pointer, (STRLEN)msg->dsc$w_length);
}
else { /* continuation line */
- int errlen = strlen(LastError);
- LastError = saferealloc(LastError, errlen + msg->dsc$w_length + 1);
- LastError[errlen] = '\n'; LastError[errlen+1] = '\0';
- strncat(LastError, msg->dsc$a_pointer, msg->dsc$w_length);
+ sv_catpvn(MY_CXT.x_dl_last_error, msg->dsc$a_pointer, (STRLEN)msg->dsc$w_length);
}
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "Saved error message: %s\n", dl_last_error));
+ return 0;
}
/* Use $PutMsg to retrieve error message for failure status code */
static void
-dl_set_error(sts,stv)
- vmssts sts;
- vmssts stv;
+dl_set_error(vmssts sts, vmssts stv)
{
vmssts vec[3];
+ dTHX;
vec[0] = stv ? 2 : 1;
vec[1] = sts; vec[2] = stv;
_ckvmssts(sys$putmsg(vec,copy_errmsg,0,0));
}
+/* wrapper for lib$find_image_symbol, so signalled errors can be saved
+ * for dl_error and then returned */
+static unsigned long int
+my_find_image_symbol(struct dsc$descriptor_s *imgname,
+ struct dsc$descriptor_s *symname,
+ void (**entry)(),
+ struct dsc$descriptor_s *defspec)
+{
+ unsigned long int retsts;
+ VAXC$ESTABLISH(lib$sig_to_ret);
+ retsts = lib$find_image_symbol(imgname,symname,entry,defspec,DL_CASE_SENSITIVE);
+ return retsts;
+}
+
+
static void
-dl_private_init()
+dl_private_init(pTHX)
{
- dl_generic_private_init();
- /* Set up the static control blocks for dl_expand_filespec() */
- dlfab = cc$rms_fab;
- dlnam = cc$rms_nam;
- dlfab.fab$l_nam = &dlnam;
- dlnam.nam$l_esa = dlesa;
- dlnam.nam$b_ess = sizeof dlesa;
- dlnam.nam$l_rsa = dlrsa;
- dlnam.nam$b_rss = sizeof dlrsa;
+ dl_generic_private_init(aTHX);
+ {
+ dMY_CXT;
+ dl_require_symbols = get_av("DynaLoader::dl_require_symbols", GV_ADDMULTI);
+ /* Set up the static control blocks for dl_expand_filespec() */
+ dl_fab = cc$rms_fab;
+ dl_nam = cc$rms_nam;
+ dl_fab.fab$l_nam = &dl_nam;
+ dl_nam.nam$l_esa = dl_esa;
+ dl_nam.nam$b_ess = sizeof dl_esa;
+ dl_nam.nam$l_rsa = dl_rsa;
+ dl_nam.nam$b_rss = sizeof dl_rsa;
+ }
}
MODULE = DynaLoader PACKAGE = DynaLoader
BOOT:
- (void)dl_private_init();
+ (void)dl_private_init(aTHX);
void
dl_expandspec(filespec)
char vmsspec[NAM$C_MAXRSS], defspec[NAM$C_MAXRSS];
size_t deflen;
vmssts sts;
+ dMY_CXT;
tovmsspec(filespec,vmsspec);
- dlfab.fab$l_fna = vmsspec;
- dlfab.fab$b_fns = strlen(vmsspec);
- dlfab.fab$l_dna = 0;
- dlfab.fab$b_dns = 0;
- DLDEBUG(1,fprintf(stderr,"dl_expand_filespec(%s):\n",vmsspec));
+ dl_fab.fab$l_fna = vmsspec;
+ dl_fab.fab$b_fns = strlen(vmsspec);
+ dl_fab.fab$l_dna = 0;
+ dl_fab.fab$b_dns = 0;
+ DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_expand_filespec(%s):\n",vmsspec));
/* On the first pass, just parse the specification string */
- dlnam.nam$b_nop = NAM$M_SYNCHK;
- sts = sys$parse(&dlfab);
- DLDEBUG(2,fprintf(stderr,"\tSYNCHK sys$parse = %d\n",sts));
+ dl_nam.nam$b_nop = NAM$M_SYNCHK;
+ sts = sys$parse(&dl_fab);
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tSYNCHK sys$parse = %d\n",sts));
if (!(sts & 1)) {
- dl_set_error(dlfab.fab$l_sts,dlfab.fab$l_stv);
- ST(0) = &sv_undef;
+ dl_set_error(dl_fab.fab$l_sts,dl_fab.fab$l_stv);
+ ST(0) = &PL_sv_undef;
}
else {
/* Now set up a default spec - everything but the name */
- deflen = dlnam.nam$l_name - dlesa;
- memcpy(defspec,dlesa,deflen);
- memcpy(defspec+deflen,dlnam.nam$l_type,
- dlnam.nam$b_type + dlnam.nam$b_ver);
- deflen += dlnam.nam$b_type + dlnam.nam$b_ver;
- memcpy(vmsspec,dlnam.nam$l_name,dlnam.nam$b_name);
- DLDEBUG(2,fprintf(stderr,"\tsplit filespec: name = %.*s, default = %.*s\n",
- dlnam.nam$b_name,vmsspec,deflen,defspec));
+ deflen = dl_nam.nam$l_name - dl_esa;
+ memcpy(defspec,dl_esa,deflen);
+ memcpy(defspec+deflen,dl_nam.nam$l_type,
+ dl_nam.nam$b_type + dl_nam.nam$b_ver);
+ deflen += dl_nam.nam$b_type + dl_nam.nam$b_ver;
+ memcpy(vmsspec,dl_nam.nam$l_name,dl_nam.nam$b_name);
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tsplit filespec: name = %.*s, default = %.*s\n",
+ dl_nam.nam$b_name,vmsspec,deflen,defspec));
/* . . . and go back to expand it */
- dlnam.nam$b_nop = 0;
- dlfab.fab$l_dna = defspec;
- dlfab.fab$b_dns = deflen;
- dlfab.fab$b_fns = dlnam.nam$b_name;
- sts = sys$parse(&dlfab);
- DLDEBUG(2,fprintf(stderr,"\tname/default sys$parse = %d\n",sts));
+ dl_nam.nam$b_nop = 0;
+ dl_fab.fab$l_dna = defspec;
+ dl_fab.fab$b_dns = deflen;
+ dl_fab.fab$b_fns = dl_nam.nam$b_name;
+ sts = sys$parse(&dl_fab);
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tname/default sys$parse = %d\n",sts));
if (!(sts & 1)) {
- dl_set_error(dlfab.fab$l_sts,dlfab.fab$l_stv);
- ST(0) = &sv_undef;
+ dl_set_error(dl_fab.fab$l_sts,dl_fab.fab$l_stv);
+ ST(0) = &PL_sv_undef;
}
else {
/* Now find the actual file */
- sts = sys$search(&dlfab);
- DLDEBUG(2,fprintf(stderr,"\tsys$search = %d\n",sts));
- if (!(sts & 1) && sts != RMS$_FNF) {
- dl_set_error(dlfab.fab$l_sts,dlfab.fab$l_stv);
- ST(0) = &sv_undef;
+ sts = sys$search(&dl_fab);
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tsys$search = %d\n",sts));
+ if (!(sts & 1)) {
+ dl_set_error(dl_fab.fab$l_sts,dl_fab.fab$l_stv);
+ ST(0) = &PL_sv_undef;
}
else {
- ST(0) = sv_2mortal(newSVpv(dlnam.nam$l_rsa,dlnam.nam$b_rsl));
- DLDEBUG(1,fprintf(stderr,"\tresult = \\%.*s\\\n",
- dlnam.nam$b_rsl,dlnam.nam$l_rsa));
+ ST(0) = sv_2mortal(newSVpvn(dl_nam.nam$l_rsa,dl_nam.nam$b_rsl));
+ DLDEBUG(1,PerlIO_printf(Perl_debug_log, "\tresult = \\%.*s\\\n",
+ dl_nam.nam$b_rsl,dl_nam.nam$l_rsa));
}
}
}
void
-dl_load_file(filespec)
- char * filespec
- CODE:
+dl_load_file(filename, flags=0)
+ char * filename
+ int flags
+ PREINIT:
+ dTHX;
+ dMY_CXT;
char vmsspec[NAM$C_MAXRSS];
- AV *reqAV;
SV *reqSV, **reqSVhndl;
STRLEN deflen;
struct dsc$descriptor_s
} namlst[2] = {{0,FSCN$_NAME,0},{0,0,0}};
struct libref *dlptr;
vmssts sts, failed = 0;
- void *entry;
+ void (*entry)();
+ CODE:
- DLDEBUG(1,fprintf(stderr,"dl_load_file(%s):\n",filespec));
- specdsc.dsc$a_pointer = tovmsspec(filespec,vmsspec);
+ DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,flags));
+ specdsc.dsc$a_pointer = tovmsspec(filename,vmsspec);
specdsc.dsc$w_length = strlen(specdsc.dsc$a_pointer);
- DLDEBUG(2,fprintf(stderr,"\tVMS-ified filespec is %s\n",
+ if (specdsc.dsc$w_length == 0) { /* undef in, empty out */
+ XSRETURN_EMPTY;
+ }
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tVMS-ified filename is %s\n",
specdsc.dsc$a_pointer));
- New(7901,dlptr,1,struct libref);
+ Newx(dlptr,1,struct libref);
dlptr->name.dsc$b_dtype = dlptr->defspec.dsc$b_dtype = DSC$K_DTYPE_T;
dlptr->name.dsc$b_class = dlptr->defspec.dsc$b_class = DSC$K_CLASS_S;
sts = sys$filescan(&specdsc,namlst,0);
- DLDEBUG(2,fprintf(stderr,"\tsys$filescan: returns %d, name is %.*s\n",
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tsys$filescan: returns %d, name is %.*s\n",
sts,namlst[0].len,namlst[0].string));
if (!(sts & 1)) {
failed = 1;
dlptr->name.dsc$w_length = namlst[0].len;
dlptr->name.dsc$a_pointer = savepvn(namlst[0].string,namlst[0].len);
dlptr->defspec.dsc$w_length = specdsc.dsc$w_length - namlst[0].len;
- dlptr->defspec.dsc$a_pointer = safemalloc(dlptr->defspec.dsc$w_length + 1);
+ Newx(dlptr->defspec.dsc$a_pointer, dlptr->defspec.dsc$w_length + 1, char);
deflen = namlst[0].string - specdsc.dsc$a_pointer;
memcpy(dlptr->defspec.dsc$a_pointer,specdsc.dsc$a_pointer,deflen);
memcpy(dlptr->defspec.dsc$a_pointer + deflen,
namlst[0].string + namlst[0].len,
dlptr->defspec.dsc$w_length - deflen);
- DLDEBUG(2,fprintf(stderr,"\tlibref = name: %s, defspec: %.*s\n",
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tlibref = name: %s, defspec: %.*s\n",
dlptr->name.dsc$a_pointer,
dlptr->defspec.dsc$w_length,
dlptr->defspec.dsc$a_pointer));
- if (!(reqAV = GvAV(gv_fetchpv("DynaLoader::dl_require_symbols",
- FALSE,SVt_PVAV)))
- || !(reqSVhndl = av_fetch(reqAV,0,FALSE)) || !(reqSV = *reqSVhndl)) {
- DLDEBUG(2,fprintf(stderr,"\t@dl_require_symbols empty, returning untested libref\n"));
+ if (!(reqSVhndl = av_fetch(dl_require_symbols,0,FALSE)) || !(reqSV = *reqSVhndl)) {
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\t@dl_require_symbols empty, returning untested libref\n"));
}
else {
symdsc.dsc$w_length = SvCUR(reqSV);
symdsc.dsc$a_pointer = SvPVX(reqSV);
- DLDEBUG(2,fprintf(stderr,"\t$dl_require_symbols[0] = %.*s\n",
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\t$dl_require_symbols[0] = %.*s\n",
symdsc.dsc$w_length, symdsc.dsc$a_pointer));
- sts = lib$find_image_symbol(&(dlptr->name),&symdsc,
+ sts = my_find_image_symbol(&(dlptr->name),&symdsc,
&entry,&(dlptr->defspec));
- DLDEBUG(2,fprintf(stderr,"\tlib$find_image_symbol returns %d\n",sts));
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tlib$find_image_symbol returns %d\n",sts));
if (!(sts&1)) {
failed = 1;
dl_set_error(sts,0);
Safefree(dlptr->name.dsc$a_pointer);
Safefree(dlptr->defspec.dsc$a_pointer);
Safefree(dlptr);
- ST(0) = &sv_undef;
+ ST(0) = &PL_sv_undef;
}
else {
- ST(0) = sv_2mortal(newSViv((IV) dlptr));
+ ST(0) = sv_2mortal(newSViv(PTR2IV(dlptr)));
}
void (*entry)();
vmssts sts;
- DLDEBUG(1,fprintf(stderr,"dl_find_dymbol(%.*s,%.*s):\n",
+ DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_find_symbol(%.*s,%.*s):\n",
thislib.name.dsc$w_length, thislib.name.dsc$a_pointer,
symdsc.dsc$w_length,symdsc.dsc$a_pointer));
- sts = lib$find_image_symbol(&(thislib.name),&symdsc,
- &entry,&(thislib.defspec));
- DLDEBUG(2,fprintf(stderr,"\tlib$find_image_symbol returns %d\n",sts));
- DLDEBUG(2,fprintf(stderr,"\tentry point is %d\n",
+ sts = my_find_image_symbol(&(thislib.name),&symdsc,
+ &entry,&(thislib.defspec));
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tlib$find_image_symbol returns %d\n",sts));
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "\tentry point is %d\n",
(unsigned long int) entry));
if (!(sts & 1)) {
dl_set_error(sts,0);
- ST(0) = &sv_undef;
+ ST(0) = &PL_sv_undef;
}
- else ST(0) = sv_2mortal(newSViv((IV) entry));
+ else ST(0) = sv_2mortal(newSViv(PTR2IV(entry)));
void
dl_install_xsub(perl_name, symref, filename="$Package")
char * perl_name
void * symref
- char * filename
+ const char * filename
CODE:
- DLDEBUG(2,fprintf(stderr,"dl_install_xsub(name=%s, symref=%x)\n",
+ DLDEBUG(2,PerlIO_printf(Perl_debug_log, "dl_install_xsub(name=%s, symref=%x)\n",
perl_name, symref));
- ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)())symref, filename)));
+ ST(0) = sv_2mortal(newRV((SV*)newXS_flags(perl_name,
+ (void(*)(pTHX_ CV *))symref,
+ filename, NULL,
+ XS_DYNAMIC_FILENAME)));
char *
dl_error()
CODE:
- RETVAL = LastError ;
+ dMY_CXT;
+ RETVAL = dl_last_error ;
OUTPUT:
RETVAL
+#if defined(USE_ITHREADS)
+
+void
+CLONE(...)
+ CODE:
+ MY_CXT_CLONE;
+
+ /* MY_CXT_CLONE just does a memcpy on the whole structure, so to avoid
+ * using Perl variables that belong to another thread, we create our
+ * own for this thread.
+ */
+ MY_CXT.x_dl_last_error = newSVpvn("", 0);
+ dl_require_symbols = get_av("DynaLoader::dl_require_symbols", GV_ADDMULTI);
+
+#endif
+
# end.
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