X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/cea2e8a9dd23747fd2b66edc86c58c64e9970321..f2e3b69f3d7756d88806b5fbcba98ad72be867ee:/run.c

diff --git a/run.c b/run.c
index 9d3189d..a2059e2 100644
--- a/run.c
+++ b/run.c
@@ -1,12 +1,26 @@
 /*    run.c
  *
- *    Copyright (c) 1991-1999, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ *    2000, 2001, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
  *
  */
 
+/* This file contains the main Perl opcode execution loop. It just
+ * calls the pp_foo() function associated with each op, and expects that
+ * function to return a pointer to the next op to be executed, or null if
+ * it's the end of the sub or program or whatever.
+ *
+ * There is a similar loop in dump.c, Perl_runops_debug(), which does
+ * the same, but also checks for various debug flags each time round the
+ * loop.
+ *
+ * Why this function requires a file all of its own is anybody's guess.
+ * DAPM.
+ */
+
 #include "EXTERN.h"
 #define PERL_IN_RUN_C
 #include "perl.h"
@@ -17,115 +31,14 @@
  * know.  Run now!  Hope is in speed!"  --Gandalf
  */
 
-#ifdef PERL_OBJECT
-#define CALLOP this->*PL_op
-#else
-#define CALLOP *PL_op
-#endif
-
 int
 Perl_runops_standard(pTHX)
 {
-    dTHR;
-
-    while ( PL_op = (CALLOP->op_ppaddr)(ARGS) ) ;
-
-    TAINT_NOT;
-    return 0;
-}
-
-int
-Perl_runops_debug(pTHX)
-{
-#ifdef DEBUGGING
-    dTHR;
-    if (!PL_op) {
-	Perl_warn(aTHX_ "NULL OP IN RUN");
-	return 0;
+    while ((PL_op = CALL_FPTR(PL_op->op_ppaddr)(aTHX))) {
+	PERL_ASYNC_CHECK();
     }
 
-    do {
-	if (PL_debug) {
-	    if (PL_watchaddr != 0 && *PL_watchaddr != PL_watchok)
-		PerlIO_printf(Perl_debug_log, "WARNING: %lx changed from %lx to %lx\n",
-		    (long)PL_watchaddr, (long)PL_watchok, (long)*PL_watchaddr);
-	    DEBUG_s(debstack());
-	    DEBUG_t(debop(PL_op));
-	    DEBUG_P(debprof(PL_op));
-	}
-    } while ( PL_op = (CALLOP->op_ppaddr)(ARGS) );
-
     TAINT_NOT;
     return 0;
-#else
-    return runops_standard();
-#endif	/* DEBUGGING */
 }
 
-I32
-Perl_debop(pTHX_ OP *o)
-{
-#ifdef DEBUGGING
-    SV *sv;
-    STRLEN n_a;
-    Perl_deb(aTHX_ "%s", PL_op_name[o->op_type]);
-    switch (o->op_type) {
-    case OP_CONST:
-	PerlIO_printf(Perl_debug_log, "(%s)", SvPEEK(cSVOPo->op_sv));
-	break;
-    case OP_GVSV:
-    case OP_GV:
-	if (cGVOPo->op_gv) {
-	    sv = NEWSV(0,0);
-	    gv_fullname3(sv, cGVOPo->op_gv, Nullch);
-	    PerlIO_printf(Perl_debug_log, "(%s)", SvPV(sv, n_a));
-	    SvREFCNT_dec(sv);
-	}
-	else
-	    PerlIO_printf(Perl_debug_log, "(NULL)");
-	break;
-    default:
-	break;
-    }
-    PerlIO_printf(Perl_debug_log, "\n");
-#endif	/* DEBUGGING */
-    return 0;
-}
-
-void
-Perl_watch(pTHX_ char **addr)
-{
-#ifdef DEBUGGING
-    dTHR;
-    PL_watchaddr = addr;
-    PL_watchok = *addr;
-    PerlIO_printf(Perl_debug_log, "WATCHING, %lx is currently %lx\n",
-	(long)PL_watchaddr, (long)PL_watchok);
-#endif	/* DEBUGGING */
-}
-
-STATIC void
-S_debprof(pTHX_ OP *o)
-{
-#ifdef DEBUGGING
-    if (!PL_profiledata)
-	Newz(000, PL_profiledata, MAXO, U32);
-    ++PL_profiledata[o->op_type];
-#endif /* DEBUGGING */
-}
-
-void
-Perl_debprofdump(pTHX)
-{
-#ifdef DEBUGGING
-    unsigned i;
-    if (!PL_profiledata)
-	return;
-    for (i = 0; i < MAXO; i++) {
-	if (PL_profiledata[i])
-	    PerlIO_printf(Perl_debug_log,
-			  "%5lu %s\n", (unsigned long)PL_profiledata[i],
-                                       PL_op_name[i]);
-    }
-#endif	/* DEBUGGING */
-}