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Re: [ID 20010305.005] "use integer" doesn't make rand() return integers
[perl5.git] / run.c
1 /*    run.c
2  *
3  *    Copyright (c) 1991-2001, Larry Wall
4  *
5  *    You may distribute under the terms of either the GNU General Public
6  *    License or the Artistic License, as specified in the README file.
7  *
8  */
9
10 #include "EXTERN.h"
11 #define PERL_IN_RUN_C
12 #include "perl.h"
13
14 /*
15  * "Away now, Shadowfax!  Run, greatheart, run as you have never run before!
16  * Now we are come to the lands where you were foaled, and every stone you
17  * know.  Run now!  Hope is in speed!"  --Gandalf
18  */
19
20 int
21 Perl_runops_standard(pTHX)
22 {
23     while ((PL_op = CALL_FPTR(PL_op->op_ppaddr)(aTHX))) {
24         PERL_ASYNC_CHECK();
25     }
26
27     TAINT_NOT;
28     return 0;
29 }
30
31 int
32 Perl_runops_debug(pTHX)
33 {
34 #ifdef DEBUGGING
35     if (!PL_op) {
36         if (ckWARN_d(WARN_DEBUGGING))
37             Perl_warner(aTHX_ WARN_DEBUGGING, "NULL OP IN RUN");
38         return 0;
39     }
40
41     do {
42         PERL_ASYNC_CHECK();
43         if (PL_debug) {
44             if (PL_watchaddr != 0 && *PL_watchaddr != PL_watchok)
45                 PerlIO_printf(Perl_debug_log,
46                               "WARNING: %"UVxf" changed from %"UVxf" to %"UVxf"\n",
47                               PTR2UV(PL_watchaddr), PTR2UV(PL_watchok),
48                               PTR2UV(*PL_watchaddr));
49             DEBUG_s(debstack());
50             DEBUG_t(debop(PL_op));
51             DEBUG_P(debprof(PL_op));
52         }
53     } while ((PL_op = CALL_FPTR(PL_op->op_ppaddr)(aTHX)));
54
55     TAINT_NOT;
56     return 0;
57 #else
58     return runops_standard();
59 #endif  /* DEBUGGING */
60 }
61
62 I32
63 Perl_debop(pTHX_ OP *o)
64 {
65 #ifdef DEBUGGING
66     SV *sv;
67     SV **svp;
68     STRLEN n_a;
69     Perl_deb(aTHX_ "%s", PL_op_name[o->op_type]);
70     switch (o->op_type) {
71     case OP_CONST:
72         PerlIO_printf(Perl_debug_log, "(%s)", SvPEEK(cSVOPo_sv));
73         break;
74     case OP_GVSV:
75     case OP_GV:
76         if (cGVOPo_gv) {
77             sv = NEWSV(0,0);
78             gv_fullname3(sv, cGVOPo_gv, Nullch);
79             PerlIO_printf(Perl_debug_log, "(%s)", SvPV(sv, n_a));
80             SvREFCNT_dec(sv);
81         }
82         else
83             PerlIO_printf(Perl_debug_log, "(NULL)");
84         break;
85     case OP_PADSV:
86     case OP_PADAV:
87     case OP_PADHV:
88         /* print the lexical's name */
89         svp = av_fetch(PL_comppad_name, o->op_targ, FALSE);
90         if (svp)
91             PerlIO_printf(Perl_debug_log, "(%s)", SvPV(*svp,n_a));
92         else
93             PerlIO_printf(Perl_debug_log, "[%"UVuf"]", o->op_targ);
94         break;
95     default:
96         break;
97     }
98     PerlIO_printf(Perl_debug_log, "\n");
99 #endif  /* DEBUGGING */
100     return 0;
101 }
102
103 void
104 Perl_watch(pTHX_ char **addr)
105 {
106 #ifdef DEBUGGING
107     PL_watchaddr = addr;
108     PL_watchok = *addr;
109     PerlIO_printf(Perl_debug_log, "WATCHING, %"UVxf" is currently %"UVxf"\n",
110         PTR2UV(PL_watchaddr), PTR2UV(PL_watchok));
111 #endif  /* DEBUGGING */
112 }
113
114 STATIC void
115 S_debprof(pTHX_ OP *o)
116 {
117 #ifdef DEBUGGING
118     if (!PL_profiledata)
119         Newz(000, PL_profiledata, MAXO, U32);
120     ++PL_profiledata[o->op_type];
121 #endif /* DEBUGGING */
122 }
123
124 void
125 Perl_debprofdump(pTHX)
126 {
127 #ifdef DEBUGGING
128     unsigned i;
129     if (!PL_profiledata)
130         return;
131     for (i = 0; i < MAXO; i++) {
132         if (PL_profiledata[i])
133             PerlIO_printf(Perl_debug_log,
134                           "%5lu %s\n", (unsigned long)PL_profiledata[i],
135                                        PL_op_name[i]);
136     }
137 #endif  /* DEBUGGING */
138 }