source: trunk/third/perl/run.c @ 10724

/*    run.c
 *
 *    Copyright (c) 1991-1997, Larry Wall
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 */

#include "EXTERN.h"
#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
 */

dEXT char **watchaddr = 0;
dEXT char *watchok;

#ifndef DEBUGGING

int
runops() {
    SAVEI32(runlevel);
    runlevel++;

    while ( op = (*op->op_ppaddr)() ) ;

    TAINT_NOT;
    return 0;
}

#else

static void debprof _((OP*op));

int
runops() {
    if (!op) {
        warn("NULL OP IN RUN");
        return 0;
    }

    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));
        }
    } while ( op = (*op->op_ppaddr)() );

    TAINT_NOT;
    return 0;
}

I32
debop(op)
OP *op;
{
    SV *sv;
    deb("%s", op_name[op->op_type]);
    switch (op->op_type) {
    case OP_CONST:
        PerlIO_printf(Perl_debug_log, "(%s)", SvPEEK(cSVOP->op_sv));
        break;
    case OP_GVSV:
    case OP_GV:
        if (cGVOP->op_gv) {
            sv = NEWSV(0,0);
            gv_fullname3(sv, cGVOP->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(op)
OP* op;
{
    if (!profiledata)
        New(000, profiledata, MAXO, U32);
    ++profiledata[op->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