| | 1 | /* perlvars.h |
| | 2 | * |
| | 3 | * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
| | 4 | * by Larry Wall and others |
| | 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 | |
| | 11 | /****************/ |
| | 12 | /* Truly global */ |
| | 13 | /****************/ |
| | 14 | |
| | 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 |
| | 23 | * generated in embed*.h. Such symbols are also used to generate |
| | 24 | * the appropriate export list for win32. */ |
| | 25 | |
| | 26 | /* global state */ |
| | 27 | PERLVAR(Gcurinterp, PerlInterpreter *) |
| | 28 | /* currently running interpreter |
| | 29 | * (initial parent interpreter under |
| | 30 | * useithreads) */ |
| | 31 | #if defined(USE_ITHREADS) |
| | 32 | PERLVAR(Gthr_key, perl_key) /* key to retrieve per-thread struct */ |
| | 33 | #endif |
| | 34 | |
| | 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[{]}") |
| | 41 | |
| | 42 | /* XXX does anyone even use this? */ |
| | 43 | PERLVARI(Gdo_undump, bool, FALSE) /* -u or dump seen? */ |
| | 44 | |
| | 45 | #if defined(MYMALLOC) && defined(USE_ITHREADS) |
| | 46 | PERLVAR(Gmalloc_mutex, perl_mutex) /* Mutex for malloc */ |
| | 47 | #endif |
| | 48 | |
| | 49 | #if defined(USE_ITHREADS) |
| | 50 | PERLVAR(Gop_mutex, perl_mutex) /* Mutex for op refcounting */ |
| | 51 | #endif |
| | 52 | |
| | 53 | #ifdef USE_ITHREADS |
| | 54 | PERLVAR(Gdollarzero_mutex, perl_mutex) /* Modifying $0 */ |
| | 55 | #endif |
| | 56 | |
| | 57 | /* This is constant on most architectures, a global on OS/2 */ |
| | 58 | PERLVARI(Gsh_path, const char *, SH_PATH)/* full path of shell */ |
| | 59 | |
| | 60 | #ifndef PERL_MICRO |
| | 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) |
| | 64 | #endif |
| | 65 | |
| | 66 | /* Restricted hashes placeholder value. |
| | 67 | * The contents are never used, only the address. */ |
| | 68 | PERLVAR(Gsv_placeholder, SV) |
| | 69 | |
| | 70 | #ifndef PERL_MICRO |
| | 71 | PERLVARI(Gcsighandlerp, Sighandler_t, Perl_csighandler) /* Pointer to C-level sighandler */ |
| | 72 | #endif |
| | 73 | |
| | 74 | #ifndef PERL_USE_SAFE_PUTENV |
| | 75 | PERLVARI(Guse_safe_putenv, int, 1) |
| | 76 | #endif |
| | 77 | |
| | 78 | #ifdef USE_PERLIO |
| | 79 | PERLVARA(Gperlio_fd_refcnt, 2048, int) /* PERLIO_MAX_REFCOUNTABLE_FD */ |
| | 80 | PERLVARI(Gperlio_debug_fd, int, 0) /* the fd to write perlio debug into, 0 means not set yet */ |
| | 81 | #endif |
| | 82 | |
| | 83 | #ifdef HAS_MMAP |
| | 84 | PERLVARI(Gmmap_page_size, IV, 0) |
| | 85 | #endif |
| | 86 | |
| | 87 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS)||defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
| | 88 | PERLVARI(Gsig_handlers_initted, int, 0) |
| | 89 | #endif |
| | 90 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
| | 91 | PERLVARA(Gsig_ignoring, SIG_SIZE, int) /* which signals we are ignoring */ |
| | 92 | #endif |
| | 93 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
| | 94 | PERLVARA(Gsig_defaulting, SIG_SIZE, int) |
| | 95 | #endif |
| | 96 | |
| | 97 | #ifndef PERL_IMPLICIT_CONTEXT |
| | 98 | PERLVAR(Gsig_sv, SV*) |
| | 99 | #endif |
| | 100 | |
| | 101 | /* XXX signals are process-wide anyway, so we |
| | 102 | * ignore the implications of this for threading */ |
| | 103 | #ifndef HAS_SIGACTION |
| | 104 | PERLVARI(Gsig_trapped, int, 0) |
| | 105 | #endif |
| | 106 | |
| | 107 | #ifdef DEBUGGING |
| | 108 | PERLVAR(Gwatch_pvx, char*) |
| | 109 | #endif |
| | 110 | |
| | 111 | #ifdef PERL_GLOBAL_STRUCT |
| | 112 | PERLVAR(Gppaddr, Perl_ppaddr_t*) /* or opcode.h */ |
| | 113 | PERLVAR(Gcheck, Perl_check_t *) /* or opcode.h */ |
| | 114 | PERLVARA(Gfold_locale, 256, unsigned char) /* or perl.h */ |
| | 115 | #endif |
| | 116 | |
| | 117 | #ifdef PERL_NEED_APPCTX |
| | 118 | PERLVAR(Gappctx, void*) /* the application context */ |
| | 119 | #endif |
| | 120 | |
| | 121 | PERLVAR(Gop_sequence, HV*) /* dump.c */ |
| | 122 | PERLVARI(Gop_seq, UV, 0) /* dump.c */ |
| | 123 | |
| | 124 | #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE) |
| | 125 | PERLVAR(Gtimesbase, struct tms) |
| | 126 | #endif |
| | 127 | |
| | 128 | /* allocate a unique index to every module that calls MY_CXT_INIT */ |
| | 129 | |
| | 130 | #ifdef PERL_IMPLICIT_CONTEXT |
| | 131 | # ifdef USE_ITHREADS |
| | 132 | PERLVAR(Gmy_ctx_mutex, perl_mutex) |
| | 133 | # endif |
| | 134 | PERLVARI(Gmy_cxt_index, int, 0) |
| | 135 | #endif |
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