X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/5dc0d6134ebb76636f69238201dde15cec972fd0..6e5a209ba9c56abdee04aa811fc575cfbac8df08:/run.c

diff --git a/run.c b/run.c
index e416160..368ef03 100644
--- a/run.c
+++ b/run.c
@@ -1,130 +1,56 @@
 /*    run.c
  *
- *    Copyright (c) 1991-1997, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ *    2000, 2001, 2004, 2005, 2006, 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"
 
 /*
- * "Away now, Shadowfax!  Run, greatheart, run as you have never run before!
- * Now we are come to the lands where you were foaled, and every stone you
- * know.  Run now!  Hope is in speed!"  --Gandalf
+ * 'Away now, Shadowfax!  Run, greatheart, run as you have never run before!
+ *  Now we are come to the lands where you were foaled, and every stone you
+ *  know.  Run now!  Hope is in speed!'                    --Gandalf
+ *
+ *     [p.600 of _The Lord of the Rings_, III/xi: "The Palantír"]
  */
 
-dEXT char **watchaddr = 0;
-dEXT char *watchok;
-
-#ifndef DEBUGGING
-
 int
-runops() {
-    dTHR;
-    SAVEI32(runlevel);
-    runlevel++;
-
-    while ( op = (*op->op_ppaddr)(ARGS) ) ;
-
-    TAINT_NOT;
-    return 0;
-}
-
-#else
-
-static void debprof _((OP*o));
-
-int
-runops() {
-    dTHR;
-    if (!op) {
-	warn("NULL OP IN RUN");
-	return 0;
+Perl_runops_standard(pTHX)
+{
+    dVAR;
+    register OP *op = PL_op;
+    while ((PL_op = op = op->op_ppaddr(aTHX))) {
     }
 
-    SAVEI32(runlevel);
-    runlevel++;
-
-    do {
-	if (debug) {
-	    if (watchaddr != 0 && *watchaddr != watchok)
-		PerlIO_printf(Perl_debug_log, "WARNING: %lx changed from %lx to %lx\n",
-		    (long)watchaddr, (long)watchok, (long)*watchaddr);
-	    DEBUG_s(debstack());
-	    DEBUG_t(debop(op));
-	    DEBUG_P(debprof(op));
-#ifdef USE_THREADS
-	    DEBUG_L(YIELD());	/* shake up scheduling a bit */
-#endif /* USE_THREADS */
-	}
-    } while ( op = (*op->op_ppaddr)(ARGS) );
-
     TAINT_NOT;
     return 0;
 }
 
-I32
-debop(o)
-OP *o;
-{
-    SV *sv;
-    deb("%s", 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, na));
-	    SvREFCNT_dec(sv);
-	}
-	else
-	    PerlIO_printf(Perl_debug_log, "(NULL)");
-	break;
-    default:
-	break;
-    }
-    PerlIO_printf(Perl_debug_log, "\n");
-    return 0;
-}
-
-void
-watch(addr)
-char **addr;
-{
-    watchaddr = addr;
-    watchok = *addr;
-    PerlIO_printf(Perl_debug_log, "WATCHING, %lx is currently %lx\n",
-	(long)watchaddr, (long)watchok);
-}
-
-static void
-debprof(o)
-OP* o;
-{
-    if (!profiledata)
-	New(000, profiledata, MAXO, U32);
-    ++profiledata[o->op_type];
-}
-
-void
-debprofdump()
-{
-    unsigned i;
-    if (!profiledata)
-	return;
-    for (i = 0; i < MAXO; i++) {
-	if (profiledata[i])
-	    PerlIO_printf(Perl_debug_log,
-			  "%u\t%lu\n", i, (unsigned long)profiledata[i]);
-    }
-}
-
-#endif
-
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */