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1 | /* thdrvar.h |
2 | * |
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3 | * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
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4 | * by Larry Wall and others |
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5 | * |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. |
8 | * |
9 | */ |
10 | |
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11 | /* |
12 | =head1 Global Variables |
13 | */ |
14 | |
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15 | /***********************************************/ |
16 | /* Global only to current thread */ |
17 | /***********************************************/ |
18 | |
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19 | /* Don't forget to re-run embed.pl to propagate changes! */ |
20 | |
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21 | /* The 'T' prefix is only needed for vars that need appropriate #defines |
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22 | * generated when built with or without USE_5005THREADS. It is also used |
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23 | * to generate the appropriate export list for win32. |
24 | * |
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25 | * When building without USE_5005THREADS, these variables will be truly global. |
26 | * When building without USE_5005THREADS but with MULTIPLICITY, these variables |
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27 | * will be global per-interpreter. */ |
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28 | |
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29 | /* Important ones in the first cache line (if alignment is done right) */ |
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30 | |
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31 | PERLVAR(Tstack_sp, SV **) /* top of the stack */ |
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32 | #ifdef OP_IN_REGISTER |
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33 | PERLVAR(Topsave, OP *) |
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34 | #else |
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35 | PERLVAR(Top, OP *) /* currently executing op */ |
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36 | #endif |
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37 | PERLVAR(Tcurpad, SV **) /* active pad (lexicals+tmps) */ |
38 | |
39 | PERLVAR(Tstack_base, SV **) |
40 | PERLVAR(Tstack_max, SV **) |
41 | |
42 | PERLVAR(Tscopestack, I32 *) /* scopes we've ENTERed */ |
43 | PERLVAR(Tscopestack_ix, I32) |
44 | PERLVAR(Tscopestack_max,I32) |
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45 | |
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46 | PERLVAR(Tsavestack, ANY *) /* items that need to be restored |
47 | when LEAVEing scopes we've ENTERed */ |
48 | PERLVAR(Tsavestack_ix, I32) |
49 | PERLVAR(Tsavestack_max, I32) |
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50 | |
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51 | PERLVAR(Ttmps_stack, SV **) /* mortals we've made */ |
52 | PERLVARI(Ttmps_ix, I32, -1) |
53 | PERLVARI(Ttmps_floor, I32, -1) |
54 | PERLVAR(Ttmps_max, I32) |
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55 | PERLVAR(Tmodcount, I32) /* how much mod()ification in assignment? */ |
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56 | |
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57 | PERLVAR(Tmarkstack, I32 *) /* stack_sp locations we're remembering */ |
58 | PERLVAR(Tmarkstack_ptr, I32 *) |
59 | PERLVAR(Tmarkstack_max, I32 *) |
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60 | |
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61 | PERLVAR(TSv, SV *) /* used to hold temporary values */ |
62 | PERLVAR(TXpv, XPV *) /* used to hold temporary values */ |
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63 | |
64 | /* |
65 | =for apidoc Amn|STRLEN|PL_na |
66 | |
67 | A convenience variable which is typically used with C<SvPV> when one |
68 | doesn't care about the length of the string. It is usually more efficient |
69 | to either declare a local variable and use that instead or to use the |
70 | C<SvPV_nolen> macro. |
71 | |
72 | =cut |
73 | */ |
74 | |
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75 | PERLVAR(Tna, STRLEN) /* for use in SvPV when length is |
76 | Not Applicable */ |
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77 | |
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78 | /* stat stuff */ |
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79 | PERLVAR(Tstatbuf, Stat_t) |
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80 | PERLVAR(Tstatcache, Stat_t) /* _ */ |
81 | PERLVAR(Tstatgv, GV *) |
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82 | PERLVARI(Tstatname, SV *, NULL) |
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83 | |
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84 | #ifdef HAS_TIMES |
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85 | PERLVAR(Ttimesbuf, struct tms) |
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86 | #endif |
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87 | |
88 | /* Fields used by magic variables such as $@, $/ and so on */ |
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89 | PERLVAR(Tcurpm, PMOP *) /* what to do \ interps in REs from */ |
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90 | |
91 | /* |
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92 | =for apidoc mn|SV*|PL_rs |
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93 | |
94 | The input record separator - C<$/> in Perl space. |
95 | |
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96 | =for apidoc mn|GV*|PL_last_in_gv |
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97 | |
98 | The GV which was last used for a filehandle input operation. (C<< <FH> >>) |
99 | |
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100 | =for apidoc mn|SV*|PL_ofs_sv |
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101 | |
102 | The output field separator - C<$,> in Perl space. |
103 | |
104 | =cut |
105 | */ |
106 | |
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107 | PERLVAR(Trs, SV *) /* input record separator $/ */ |
108 | PERLVAR(Tlast_in_gv, GV *) /* GV used in last <FH> */ |
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109 | PERLVAR(Tofs_sv, SV *) /* output field separator $, */ |
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110 | PERLVAR(Tdefoutgv, GV *) /* default FH for output */ |
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111 | PERLVARI(Tchopset, const char *, " \n-") /* $: */ |
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112 | PERLVAR(Tformtarget, SV *) |
113 | PERLVAR(Tbodytarget, SV *) |
114 | PERLVAR(Ttoptarget, SV *) |
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115 | |
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116 | /* Stashes */ |
117 | PERLVAR(Tdefstash, HV *) /* main symbol table */ |
118 | PERLVAR(Tcurstash, HV *) /* symbol table for current package */ |
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119 | |
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120 | PERLVAR(Trestartop, OP *) /* propagating an error from croak? */ |
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121 | PERLVARI(Tcurcop, COP * VOL, &PL_compiling) |
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122 | PERLVAR(Tcurstack, AV *) /* THE STACK */ |
123 | PERLVAR(Tcurstackinfo, PERL_SI *) /* current stack + context */ |
124 | PERLVAR(Tmainstack, AV *) /* the stack when nothing funny is happening */ |
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125 | |
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126 | PERLVAR(Ttop_env, JMPENV *) /* ptr. to current sigjmp() environment */ |
127 | PERLVAR(Tstart_env, JMPENV) /* empty startup sigjmp() environment */ |
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128 | PERLVARI(Terrors, SV *, NULL) /* outstanding queued errors */ |
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129 | |
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130 | /* statics "owned" by various functions */ |
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131 | PERLVAR(Tav_fetch_sv, SV *) /* unused as of change #19268 */ |
132 | PERLVAR(Thv_fetch_sv, SV *) /* unused as of change #19268 */ |
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133 | PERLVAR(Thv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */ |
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134 | |
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135 | |
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136 | PERLVAR(Tlastgotoprobe, OP*) /* from pp_ctl.c */ |
137 | |
138 | /* sort stuff */ |
139 | PERLVAR(Tsortcop, OP *) /* user defined sort routine */ |
140 | PERLVAR(Tsortstash, HV *) /* which is in some package or other */ |
141 | PERLVAR(Tfirstgv, GV *) /* $a */ |
142 | PERLVAR(Tsecondgv, GV *) /* $b */ |
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143 | |
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144 | /* float buffer */ |
145 | PERLVAR(Tefloatbuf, char*) |
146 | PERLVAR(Tefloatsize, STRLEN) |
147 | |
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148 | /* regex stuff */ |
149 | |
150 | PERLVAR(Tscreamfirst, I32 *) |
151 | PERLVAR(Tscreamnext, I32 *) |
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152 | PERLVAR(Tlastscream, SV *) |
153 | |
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154 | PERLVAR(Treg_state, struct re_save_state) |
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155 | PERLVAR(Tregdummy, regnode) /* from regcomp.c */ |
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156 | PERLVARA(Tcolors,6, char *) /* from regcomp.c */ |
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157 | |
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158 | PERLVARI(Tpeepp, peep_t, MEMBER_TO_FPTR(Perl_peep)) |
159 | /* Pointer to peephole optimizer */ |
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160 | |
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161 | PERLVARI(Tmaxscream, I32, -1) |
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162 | PERLVARI(Treginterp_cnt,I32, 0) /* Whether "Regexp" was interpolated. */ |
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163 | PERLVARI(Twatchaddr, char **, 0) |
164 | PERLVAR(Twatchok, char *) |
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165 | |
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166 | /* Note that the variables below are all explicitly referenced in the code |
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167 | * as thr->whatever and therefore don't need the 'T' prefix. */ |
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168 | |
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169 | /* the currently active slab in a chain of slabs of regmatch states, |
170 | * and the currently active state within that slab */ |
171 | |
172 | PERLVARI(Tregmatch_slab, regmatch_slab *, NULL) |
173 | PERLVAR(Tregmatch_state, regmatch_state *) |
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174 | |
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175 | PERLVARI(Tdumpindent, U16, 4) /* # of blanks per dump indentation level */ |
176 | |
177 | /* Put anything new that is pointer aligned here. */ |
178 | |
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179 | PERLVAR(Tdelaymagic, U16) /* ($<,$>) = ... */ |
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180 | PERLVAR(Tlocalizing, U8) /* are we processing a local() list? */ |
181 | PERLVAR(Tcolorset, bool) /* from regcomp.c */ |
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182 | PERLVARI(Tdirty, bool, FALSE) /* in the middle of tearing things down? */ |
183 | PERLVAR(Tin_eval, VOL U8) /* trap "fatal" errors? */ |
184 | PERLVAR(Ttainted, bool) /* using variables controlled by $< */ |
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185 | |
186 | /* For historical reasons this file is followed by intrpvar.h in the interpeter |
187 | struct. As this file currently ends with 7 bytes of variables, intrpvar.h |
188 | starts with one single U8, to avoid structure padding space wastage. */ |