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1 | /* perlvars.h |
| 2 | * |
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3 | * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
| 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 | /* Truly global */ |
| 13 | /****************/ |
| 14 | |
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15 | /* Don't forget to re-run embed.pl to propagate changes! */ |
| 16 | |
| 17 | /* This file describes the "global" variables used by perl |
| 18 | * This used to be in perl.h directly but we want to abstract out into |
| 19 | * distinct files which are per-thread, per-interpreter or really global, |
| 20 | * and how they're initialized. |
| 21 | * |
| 22 | * The 'G' prefix is only needed for vars that need appropriate #defines |
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23 | * generated in embed*.h. Such symbols are also used to generate |
| 14dd3ad8 |
24 | * the appropriate export list for win32. */ |
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25 | |
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26 | /* global state */ |
| cb68f92d |
27 | PERLVAR(Gcurinterp, PerlInterpreter *) |
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28 | /* currently running interpreter |
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29 | * (initial parent interpreter under |
| 30 | * useithreads) */ |
| 3db8f154 |
31 | #if defined(USE_ITHREADS) |
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32 | PERLVAR(Gthr_key, perl_key) /* key to retrieve per-thread struct */ |
| 33 | #endif |
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34 | |
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35 | /* constants (these are not literals to facilitate pointer comparisons) |
| 36 | * (PERLVARISC really does create variables, despite its looks) */ |
| 37 | PERLVARISC(GYes, "1") |
| 38 | PERLVARISC(GNo, "") |
| 39 | PERLVARISC(Ghexdigit, "0123456789abcdef0123456789ABCDEF") |
| 40 | PERLVARISC(Gpatleave, "\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}") |
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41 | |
| 42 | /* XXX does anyone even use this? */ |
| 43 | PERLVARI(Gdo_undump, bool, FALSE) /* -u or dump seen? */ |
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44 | |
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45 | #if defined(MYMALLOC) && defined(USE_ITHREADS) |
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46 | PERLVAR(Gmalloc_mutex, perl_mutex) /* Mutex for malloc */ |
| 47 | #endif |
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48 | |
| 49 | #if defined(USE_ITHREADS) |
| 50 | PERLVAR(Gop_mutex, perl_mutex) /* Mutex for op refcounting */ |
| 51 | #endif |
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52 | |
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53 | #ifdef USE_ITHREADS |
| 54 | PERLVAR(Gdollarzero_mutex, perl_mutex) /* Modifying $0 */ |
| 55 | #endif |
| 5c728af0 |
56 | |
| 57 | /* This is constant on most architectures, a global on OS/2 */ |
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58 | PERLVARI(Gsh_path, const char *, SH_PATH)/* full path of shell */ |
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59 | |
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60 | #ifndef PERL_MICRO |
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61 | /* If Perl has to ignore SIGPFE, this is its saved state. |
| 62 | * See perl.h macros PERL_FPU_INIT and PERL_FPU_{PRE,POST}_EXEC. */ |
| 63 | PERLVAR(Gsigfpe_saved, Sighandler_t) |
| 2f42fcb0 |
64 | #endif |
| b35112e7 |
65 | |
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66 | /* Restricted hashes placeholder value. |
| 67 | * The contents are never used, only the address. */ |
| 68 | PERLVAR(Gsv_placeholder, SV) |
| 69 | |
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70 | #ifndef PERL_MICRO |
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71 | PERLVARI(Gcsighandlerp, Sighandler_t, Perl_csighandler) /* Pointer to C-level sighandler */ |
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72 | #endif |
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73 | |
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74 | #ifndef PERL_USE_SAFE_PUTENV |
| 75 | PERLVARI(Guse_safe_putenv, int, 1) |
| 76 | #endif |
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77 | |
| 78 | #ifdef USE_PERLIO |
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79 | PERLVARI(Gperlio_fd_refcnt, int*, 0) /* Pointer to array of fd refcounts. */ |
| 80 | PERLVARI(Gperlio_fd_refcnt_size, int, 0) /* Size of the array */ |
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81 | PERLVARI(Gperlio_debug_fd, int, 0) /* the fd to write perlio debug into, 0 means not set yet */ |
| 82 | #endif |
| 83 | |
| 84 | #ifdef HAS_MMAP |
| 85 | PERLVARI(Gmmap_page_size, IV, 0) |
| 86 | #endif |
| 87 | |
| 88 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS)||defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
| 89 | PERLVARI(Gsig_handlers_initted, int, 0) |
| 90 | #endif |
| 91 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
| 92 | PERLVARA(Gsig_ignoring, SIG_SIZE, int) /* which signals we are ignoring */ |
| 93 | #endif |
| 94 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
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95 | PERLVARA(Gsig_defaulting, SIG_SIZE, int) |
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96 | #endif |
| 97 | |
| 98 | #ifndef PERL_IMPLICIT_CONTEXT |
| 99 | PERLVAR(Gsig_sv, SV*) |
| 100 | #endif |
| 101 | |
| 102 | /* XXX signals are process-wide anyway, so we |
| 103 | * ignore the implications of this for threading */ |
| 104 | #ifndef HAS_SIGACTION |
| 105 | PERLVARI(Gsig_trapped, int, 0) |
| 106 | #endif |
| 107 | |
| 108 | #ifdef DEBUGGING |
| 109 | PERLVAR(Gwatch_pvx, char*) |
| 110 | #endif |
| 111 | |
| 112 | #ifdef PERL_GLOBAL_STRUCT |
| 113 | PERLVAR(Gppaddr, Perl_ppaddr_t*) /* or opcode.h */ |
| 114 | PERLVAR(Gcheck, Perl_check_t *) /* or opcode.h */ |
| 115 | PERLVARA(Gfold_locale, 256, unsigned char) /* or perl.h */ |
| 116 | #endif |
| 117 | |
| 118 | #ifdef PERL_NEED_APPCTX |
| 119 | PERLVAR(Gappctx, void*) /* the application context */ |
| 120 | #endif |
| 121 | |
| 122 | PERLVAR(Gop_sequence, HV*) /* dump.c */ |
| 123 | PERLVARI(Gop_seq, UV, 0) /* dump.c */ |
| 124 | |
| 125 | #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE) |
| 126 | PERLVAR(Gtimesbase, struct tms) |
| 127 | #endif |
| 128 | |
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129 | /* allocate a unique index to every module that calls MY_CXT_INIT */ |
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130 | |
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131 | #ifdef PERL_IMPLICIT_CONTEXT |
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132 | # ifdef USE_ITHREADS |
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133 | PERLVAR(Gmy_ctx_mutex, perl_mutex) |
| 97aff369 |
134 | # endif |
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135 | PERLVARI(Gmy_cxt_index, int, 0) |
| 136 | #endif |
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137 | |
| 138 | #if defined(USE_ITHREADS) |
| 139 | PERLVAR(Ghints_mutex, perl_mutex) /* Mutex for refcounted he refcounting */ |
| 140 | #endif |
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