X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/8990e3071044a96302560bbdb5706f3e74cf1bef..7f4a9bc72716574716b99e45c11129541a8fbeb7:/run.c

diff --git a/run.c b/run.c
index eb32302..352bfbc 100644
--- a/run.c
+++ b/run.c
@@ -1,74 +1,52 @@
+/*    run.c
+ *
+ *    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"
 
-char **watchaddr = 0;
-char *watchok;
-
-#ifndef DEBUGGING
-
-run() {
-    while ( op = (*op->op_ppaddr)() ) ;
-}
-
-#else
-
-run() {
-    if (!op) {
-	warn("NULL OP IN RUN");
-	return;
-    }
-    do {
-	if (debug) {
-	    if (watchaddr != 0 && *watchaddr != watchok)
-		fprintf(stderr, "WARNING: %lx changed from %lx to %lx\n",
-		    watchaddr, watchok, *watchaddr);
-	    DEBUG_s(debstack());
-	    DEBUG_t(debop(op));
-	}
-    } while ( op = (*op->op_ppaddr)() );
-}
+/*
+ * '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"]
+ */
 
-#endif
-
-I32
-getgimme(op)
-OP *op;
-{
-    return cxstack[cxstack_ix].blk_gimme;
-}
-
-I32
-debop(op)
-OP *op;
+int
+Perl_runops_standard(pTHX)
 {
-    SV *sv;
-    deb("%s", op_name[op->op_type]);
-    switch (op->op_type) {
-    case OP_CONST:
-	fprintf(stderr, "(%s)", SvPEEK(cSVOP->op_sv));
-	break;
-    case OP_GVSV:
-    case OP_GV:
-	if (cGVOP->op_gv) {
-	    sv = NEWSV(0,0);
-	    gv_fullname(sv, cGVOP->op_gv);
-	    fprintf(stderr, "(%s)", SvPV(sv, na));
-	    SvREFCNT_dec(sv);
-	}
-	else
-	    fprintf(stderr, "(NULL)");
-	break;
+    OP *op = PL_op;
+    PERL_DTRACE_PROBE_OP(op);
+    while ((PL_op = op = op->op_ppaddr(aTHX))) {
+        PERL_DTRACE_PROBE_OP(op);
     }
-    fprintf(stderr, "\n");
+    PERL_ASYNC_CHECK();
+
+    TAINT_NOT;
     return 0;
 }
 
-void
-watch(addr)
-char **addr;
-{
-    watchaddr = addr;
-    watchok = *addr;
-    fprintf(stderr, "WATCHING, %lx is currently %lx\n",
-	watchaddr, watchok);
-}
+/*
+ * ex: set ts=8 sts=4 sw=4 et:
+ */