perlapi: Remove per-thread section; move to real scns

[perl5.git] / run.c

diff --git a/run.c b/run.c
index b2acf99..352bfbc 100644 (file)
--- a/run.c
+++ b/run.c
@@ -1,139 +1,52 @@
 /*    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"]
  */
 
-#ifdef PERL_OBJECT
-#define CALLOP this->*op
-#else
-#define CALLOP *PL_op
-#endif
-
-int
-runops_standard(void)
-{
-    dTHR;
-
-    while ( PL_op = (CALLOP->op_ppaddr)(ARGS) ) ;
-
-    TAINT_NOT;
-    return 0;
-}
-
-#ifdef DEBUGGING
-
-dEXT char **watchaddr = 0;
-dEXT char *watchok;
-
-#ifndef PERL_OBJECT
-static void debprof _((OP*o));
-#endif
-
-#endif /* DEBUGGING */
-
 int
-runops_debug(void)
+Perl_runops_standard(pTHX)
 {
-#ifdef DEBUGGING
-    dTHR;
-    if (!PL_op) {
-       warn("NULL OP IN RUN");
-       return 0;
+    OP *op = PL_op;
+    PERL_DTRACE_PROBE_OP(op);
+    while ((PL_op = op = op->op_ppaddr(aTHX))) {
+        PERL_DTRACE_PROBE_OP(op);
     }
-
-    do {
-       if (PL_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(PL_op));
-           DEBUG_P(debprof(PL_op));
-       }
-    } while ( PL_op = (CALLOP->op_ppaddr)(ARGS) );
+    PERL_ASYNC_CHECK();
 
     TAINT_NOT;
     return 0;
-#else
-    return runops_standard();
-#endif /* DEBUGGING */
-}
-
-I32
-debop(OP *o)
-{
-#ifdef DEBUGGING
-    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, PL_na));
-           SvREFCNT_dec(sv);
-       }
-       else
-           PerlIO_printf(Perl_debug_log, "(NULL)");
-       break;
-    default:
-       break;
-    }
-    PerlIO_printf(Perl_debug_log, "\n");
-#endif /* DEBUGGING */
-    return 0;
-}
-
-void
-watch(char **addr)
-{
-#ifdef DEBUGGING
-    watchaddr = addr;
-    watchok = *addr;
-    PerlIO_printf(Perl_debug_log, "WATCHING, %lx is currently %lx\n",
-       (long)watchaddr, (long)watchok);
-#endif /* DEBUGGING */
 }
 
-STATIC void
-debprof(OP *o)
-{
-#ifdef DEBUGGING
-    if (!PL_profiledata)
-       Newz(000, PL_profiledata, MAXO, U32);
-    ++PL_profiledata[o->op_type];
-#endif /* DEBUGGING */
-}
-
-void
-debprofdump(void)
-{
-#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],
-                                       op_name[i]);
-    }
-#endif /* DEBUGGING */
-}
+/*
+ * ex: set ts=8 sts=4 sw=4 et:
+ */