X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=mg.c;h=c7ebca3817e68de72ba182b6ec33ec9be94f0527;hb=d44282b98c09eb242f9704726da41d9da23bafef;hp=4e186e0c5fb222c9a772d03b567caf8d5e9c24b4;hpb=91487cfc840e1faf4dbb6a4f7eb906993cbed22f;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/mg.c b/mg.c
index 4e186e0..c7ebca3 100644
--- a/mg.c
+++ b/mg.c
@@ -12,6 +12,10 @@
  * come here, and I don't want to see no more magic,' he said, and fell silent."
  */
 
+/*
+=head1 Magical Functions
+*/
+
 #include "EXTERN.h"
 #define PERL_IN_MG_C
 #include "perl.h"
@@ -25,6 +29,15 @@
 #  endif
 #endif
 
+/* if you only have signal() and it resets on each signal, FAKE_PERSISTENT_SIGNAL_HANDLERS fixes */
+#if !defined(HAS_SIGACTION) && defined(VMS)
+#  define  FAKE_PERSISTENT_SIGNAL_HANDLERS
+#endif
+/* if we're doing kill() with sys$sigprc on VMS, FAKE_DEFAULT_SIGNAL_HANDLERS */
+#if defined(KILL_BY_SIGPRC) 
+#  define  FAKE_DEFAULT_SIGNAL_HANDLERS
+#endif
+
 static void restore_magic(pTHX_ void *p);
 static void unwind_handler_stack(pTHX_ void *p);
 
@@ -445,6 +458,14 @@ Perl_magic_len(pTHX_ SV *sv, MAGIC *mg)
 		    Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i);
 		return i;
 	    }
+	    else {
+		if (ckWARN(WARN_UNINITIALIZED))
+		    report_uninit();
+	    }
+	}
+	else {
+	    if (ckWARN(WARN_UNINITIALIZED))
+		report_uninit();
 	}
 	return 0;
     case '+':
@@ -519,62 +540,66 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
 #endif
 	break;
     case '\005':  /* ^E */
+	 if (*(mg->mg_ptr+1) == '\0') {
 #ifdef MACOS_TRADITIONAL
-	{
-	    char msg[256];
+	     {
+		  char msg[256];
 	
-	    sv_setnv(sv,(double)gMacPerl_OSErr);
-	    sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : "");	
-	}
+		  sv_setnv(sv,(double)gMacPerl_OSErr);
+		  sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : "");	
+	     }
 #else	
 #ifdef VMS
-	{
-#	    include <descrip.h>
-#	    include <starlet.h>
-	    char msg[255];
-	    $DESCRIPTOR(msgdsc,msg);
-	    sv_setnv(sv,(NV) vaxc$errno);
-	    if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
-		sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
-	    else
-		sv_setpv(sv,"");
-	}
+	     {
+#	          include <descrip.h>
+#	          include <starlet.h>
+		  char msg[255];
+		  $DESCRIPTOR(msgdsc,msg);
+		  sv_setnv(sv,(NV) vaxc$errno);
+		  if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
+		       sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
+		  else
+		       sv_setpv(sv,"");
+	     }
 #else
 #ifdef OS2
-	if (!(_emx_env & 0x200)) {	/* Under DOS */
-	    sv_setnv(sv, (NV)errno);
-	    sv_setpv(sv, errno ? Strerror(errno) : "");
-	} else {
-	    if (errno != errno_isOS2) {
-		int tmp = _syserrno();
-		if (tmp)	/* 2nd call to _syserrno() makes it 0 */
-		    Perl_rc = tmp;
-	    }
-	    sv_setnv(sv, (NV)Perl_rc);
-	    sv_setpv(sv, os2error(Perl_rc));
-	}
+	     if (!(_emx_env & 0x200)) {	/* Under DOS */
+		  sv_setnv(sv, (NV)errno);
+		  sv_setpv(sv, errno ? Strerror(errno) : "");
+	     } else {
+		  if (errno != errno_isOS2) {
+		       int tmp = _syserrno();
+		       if (tmp)	/* 2nd call to _syserrno() makes it 0 */
+			    Perl_rc = tmp;
+		  }
+		  sv_setnv(sv, (NV)Perl_rc);
+		  sv_setpv(sv, os2error(Perl_rc));
+	     }
 #else
 #ifdef WIN32
-	{
-	    DWORD dwErr = GetLastError();
-	    sv_setnv(sv, (NV)dwErr);
-	    if (dwErr)
-	    {
-		PerlProc_GetOSError(sv, dwErr);
-	    }
-	    else
-		sv_setpv(sv, "");
-	    SetLastError(dwErr);
-	}
+	     {
+		  DWORD dwErr = GetLastError();
+		  sv_setnv(sv, (NV)dwErr);
+		  if (dwErr)
+		  {
+		       PerlProc_GetOSError(sv, dwErr);
+		  }
+		  else
+		       sv_setpv(sv, "");
+		  SetLastError(dwErr);
+	     }
 #else
-	sv_setnv(sv, (NV)errno);
-	sv_setpv(sv, errno ? Strerror(errno) : "");
+	     sv_setnv(sv, (NV)errno);
+	     sv_setpv(sv, errno ? Strerror(errno) : "");
 #endif
 #endif
 #endif
 #endif
-	SvNOK_on(sv);	/* what a wonderful hack! */
-	break;
+	     SvNOK_on(sv);	/* what a wonderful hack! */
+	 }
+	 else if (strEQ(mg->mg_ptr+1, "NCODING"))
+	      sv_setsv(sv, PL_encoding);
+	 break;
     case '\006':		/* ^F */
 	sv_setiv(sv, (IV)PL_maxsysfd);
 	break;
@@ -625,7 +650,7 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
     case '\027':		/* ^W  & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
 	if (*(mg->mg_ptr+1) == '\0')
 	    sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
-	else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
+	else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
 	    if (PL_compiling.cop_warnings == pWARN_NONE ||
 	        PL_compiling.cop_warnings == pWARN_STD)
 	    {
@@ -639,7 +664,7 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
 	    }
 	    SvPOK_only(sv);
 	}
-	else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
+	else if (strEQ(mg->mg_ptr+1, "IDE_SYSTEM_CALLS"))
 	    sv_setiv(sv, (IV)PL_widesyscalls);
 	break;
     case '1': case '2': case '3': case '4':
@@ -772,6 +797,8 @@ Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
     case ',':
 	break;
     case '\\':
+	if (PL_ors_sv)
+	    sv_setpv(sv,SvPVX(PL_ors_sv));
 	break;
     case '#':
 	sv_setpv(sv,PL_ofmt);
@@ -854,7 +881,6 @@ Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
     register char *s;
     char *ptr;
     STRLEN len, klen;
-    I32 i;
 
     s = SvPV(sv,len);
     ptr = MgPV(mg,klen);
@@ -907,6 +933,7 @@ Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
 	    while (s < strend) {
 		char tmpbuf[256];
 		struct stat st;
+		I32 i;
 		s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
 			     s, strend, ':', &i);
 		s++;
@@ -959,27 +986,10 @@ Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
 #if defined(VMS) || defined(EPOC)
     Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
 #else
-#   ifdef PERL_IMPLICIT_SYS
+#   if defined(PERL_IMPLICIT_SYS) || defined(WIN32)
     PerlEnv_clearenv();
 #   else
-#	ifdef WIN32
-    char *envv = GetEnvironmentStrings();
-    char *cur = envv;
-    STRLEN len;
-    while (*cur) {
-	char *end = strchr(cur,'=');
-	if (end && end != cur) {
-	    *end = '\0';
-	    my_setenv(cur,Nullch);
-	    *end = '=';
-	    cur = end + strlen(end+1)+2;
-	}
-	else if ((len = strlen(cur)))
-	    cur += len+1;
-    }
-    FreeEnvironmentStrings(envv);
-#	else
-#ifdef USE_ENVIRON_ARRAY
+#       ifdef USE_ENVIRON_ARRAY
 #	    ifndef PERL_USE_SAFE_PUTENV
     I32 i;
 
@@ -992,13 +1002,22 @@ Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
 
     environ[0] = Nullch;
 
-#endif /* USE_ENVIRON_ARRAY */
-#	endif /* WIN32 */
-#   endif /* PERL_IMPLICIT_SYS */
-#endif /* VMS */
+#       endif /* USE_ENVIRON_ARRAY */
+#   endif /* PERL_IMPLICIT_SYS || WIN32 */
+#endif /* VMS || EPC */
     return 0;
 }
 
+#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS)||defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
+static int sig_handlers_initted = 0;
+#endif
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS   
+static int sig_ignoring[SIG_SIZE];      /* which signals we are ignoring */
+#endif
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+static int sig_defaulting[SIG_SIZE];
+#endif
+
 #ifndef PERL_MICRO
 int
 Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
@@ -1011,8 +1030,14 @@ Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
     	if(PL_psig_ptr[i])
     	    sv_setsv(sv,PL_psig_ptr[i]);
     	else {
-    	    Sighandler_t sigstate = rsignal_state(i);
-
+    	    Sighandler_t sigstate;
+    	    sigstate = rsignal_state(i);
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+    	    if (sig_handlers_initted && sig_ignoring[i]) sigstate = SIG_IGN;
+#endif
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+    	    if (sig_handlers_initted && sig_defaulting[i]) sigstate = SIG_DFL;
+#endif
     	    /* cache state so we don't fetch it again */
     	    if(sigstate == SIG_IGN)
     	    	sv_setpv(sv,"IGNORE");
@@ -1056,15 +1081,53 @@ Perl_raise_signal(pTHX_ int sig)
 Signal_t
 Perl_csighandler(int sig)
 {
+#ifdef PERL_GET_SIG_CONTEXT
+    dTHXa(PERL_GET_SIG_CONTEXT);
+#else
+    dTHX;
+#endif
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+    (void) rsignal(sig, &Perl_csighandler);
+    if (sig_ignoring[sig]) return;
+#endif
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+    if (sig_defaulting[sig]) 
+#ifdef KILL_BY_SIGPRC
+            exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG);
+#else
+            exit(1);
+#endif
+#endif
+
 #ifdef PERL_OLD_SIGNALS
     /* Call the perl level handler now with risk we may be in malloc() etc. */
     (*PL_sighandlerp)(sig);
 #else
-    dTHX;
     Perl_raise_signal(aTHX_ sig);
 #endif
 }
 
+#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
+void
+Perl_csighandler_init(void)
+{
+    int sig;
+    if (sig_handlers_initted) return;
+
+    for (sig = 1; sig < SIG_SIZE; sig++) {
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+        dTHX;
+        sig_defaulting[sig] = 1;
+        (void) rsignal(sig, &Perl_csighandler);
+#endif
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+        sig_ignoring[sig] = 0;
+#endif
+    }
+    sig_handlers_initted = 1;
+}
+#endif
+
 void
 Perl_despatch_signals(pTHX)
 {
@@ -1107,6 +1170,15 @@ Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
 		Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
 	    return 0;
 	}
+#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
+	if (!sig_handlers_initted) Perl_csighandler_init();
+#endif
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+	sig_ignoring[i] = 0;
+#endif
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+	  sig_defaulting[i] = 0;
+#endif
 	SvREFCNT_dec(PL_psig_name[i]);
 	SvREFCNT_dec(PL_psig_ptr[i]);
 	PL_psig_ptr[i] = SvREFCNT_inc(sv);
@@ -1123,14 +1195,26 @@ Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
     }
     s = SvPV_force(sv,len);
     if (strEQ(s,"IGNORE")) {
-	if (i)
+	if (i) {
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+	    sig_ignoring[i] = 1;
+	    (void)rsignal(i, &Perl_csighandler);
+#else
 	    (void)rsignal(i, SIG_IGN);
-	else
+#endif
+	} else
 	    *svp = 0;
     }
     else if (strEQ(s,"DEFAULT") || !*s) {
 	if (i)
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+	  {
+	    sig_defaulting[i] = 1;
+	    (void)rsignal(i, &Perl_csighandler);
+	  }
+#else
 	    (void)rsignal(i, SIG_DFL);
+#endif
 	else
 	    *svp = 0;
     }
@@ -1760,25 +1844,32 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
 	DEBUG_x(dump_all());
 	break;
     case '\005':  /* ^E */
+	 if (*(mg->mg_ptr+1) == '\0') {
 #ifdef MACOS_TRADITIONAL
-	gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+	      gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
 #else
 #  ifdef VMS
-	set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+	      set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
 #  else
 #    ifdef WIN32
-	SetLastError( SvIV(sv) );
+	      SetLastError( SvIV(sv) );
 #    else
 #      ifdef OS2
-	os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+	      os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
 #      else
-	/* will anyone ever use this? */
-	SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
+	      /* will anyone ever use this? */
+	      SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
 #      endif
 #    endif
 #  endif
 #endif
-	break;
+	 }
+	 else if (strEQ(mg->mg_ptr+1, "NCODING")) {
+	     if (PL_encoding)
+	         sv_setsv(PL_encoding, sv);
+	     else
+	         PL_encoding = newSVsv(sv);
+	 }
     case '\006':	/* ^F */
 	PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
 	break;
@@ -1829,7 +1920,7 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
 		    		| (i ? G_WARN_ON : G_WARN_OFF) ;
 	    }
 	}
-	else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
+	else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
 	    if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
 		if (!SvPOK(sv) && PL_localizing) {
 	            sv_setpvn(sv, WARN_NONEstring, WARNsize);
@@ -1863,7 +1954,7 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
 		}
 	    }
 	}
-	else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
+	else if (strEQ(mg->mg_ptr+1, "IDE_SYSTEM_CALLS"))
 	    PL_widesyscalls = SvTRUE(sv);
 	break;
     case '.':
@@ -1872,7 +1963,7 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
 		SAVESPTR(PL_last_in_gv);
 	}
 	else if (SvOK(sv) && GvIO(PL_last_in_gv))
-	    IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
+	    IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv);
 	break;
     case '^':
 	Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
@@ -1885,15 +1976,15 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
 	IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
 	break;
     case '=':
-	IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+	IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
 	break;
     case '-':
-	IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+	IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
 	if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
 	    IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
 	break;
     case '%':
-	IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+	IoPAGE(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
 	break;
     case '|':
 	{
@@ -2222,13 +2313,15 @@ Perl_whichsig(pTHX_ char *sig)
     return 0;
 }
 
+#if !defined(PERL_IMPLICIT_CONTEXT)
 static SV* sig_sv;
+#endif
 
 Signal_t
 Perl_sighandler(int sig)
 {
-#if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
-    dTHXa(PL_curinterp);	/* fake TLS, because signals don't do TLS */
+#ifdef PERL_GET_SIG_CONTEXT
+    dTHXa(PERL_GET_SIG_CONTEXT);
 #else
     dTHX;
 #endif
@@ -2241,10 +2334,6 @@ Perl_sighandler(int sig)
     U32 flags = 0;
     XPV *tXpv = PL_Xpv;
 
-#if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
-    PERL_SET_THX(aTHX);	/* fake TLS, see above */
-#endif
-
     if (PL_savestack_ix + 15 <= PL_savestack_max)
 	flags |= 1;
     if (PL_markstack_ptr < PL_markstack_max - 2)
@@ -2290,7 +2379,9 @@ Perl_sighandler(int sig)
     if(PL_psig_name[sig]) {
     	sv = SvREFCNT_inc(PL_psig_name[sig]);
 	flags |= 64;
+#if !defined(PERL_IMPLICIT_CONTEXT)
 	sig_sv = sv;
+#endif
     } else {
 	sv = sv_newmortal();
 	sv_setpv(sv,PL_sig_name[sig]);
@@ -2391,6 +2482,11 @@ unwind_handler_stack(pTHX_ void *p)
     if (flags & 1)
 	PL_savestack_ix -= 5; /* Unprotect save in progress. */
     /* cxstack_ix-- Not needed, die already unwound it. */
+#if !defined(PERL_IMPLICIT_CONTEXT)
     if (flags & 64)
 	SvREFCNT_dec(sig_sv);
+#endif
 }
+
+
+