| 1 | /* perlvars.h |
| 2 | * |
| 3 | * Copyright (C) 1999, 2000, 2001, 2002, by Larry Wall and others |
| 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 | /****************/ |
| 11 | /* Truly global */ |
| 12 | /****************/ |
| 13 | |
| 14 | /* Don't forget to re-run embed.pl to propagate changes! */ |
| 15 | |
| 16 | /* This file describes the "global" variables used by perl |
| 17 | * This used to be in perl.h directly but we want to abstract out into |
| 18 | * distinct files which are per-thread, per-interpreter or really global, |
| 19 | * and how they're initialized. |
| 20 | * |
| 21 | * The 'G' prefix is only needed for vars that need appropriate #defines |
| 22 | * generated in embed*.h. Such symbols are also used to generate |
| 23 | * the appropriate export list for win32. */ |
| 24 | |
| 25 | /* global state */ |
| 26 | PERLVAR(Gcurinterp, PerlInterpreter *) |
| 27 | /* currently running interpreter |
| 28 | * (initial parent interpreter under |
| 29 | * useithreads) */ |
| 30 | #if defined(USE_5005THREADS) || defined(USE_ITHREADS) |
| 31 | PERLVAR(Gthr_key, perl_key) /* key to retrieve per-thread struct */ |
| 32 | #endif |
| 33 | |
| 34 | /* constants (these are not literals to facilitate pointer comparisons) */ |
| 35 | PERLVARIC(GYes, char *, "1") |
| 36 | PERLVARIC(GNo, char *, "") |
| 37 | PERLVARIC(Ghexdigit, char *, "0123456789abcdef0123456789ABCDEF") |
| 38 | PERLVARIC(Gpatleave, char *, "\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}") |
| 39 | |
| 40 | /* XXX does anyone even use this? */ |
| 41 | PERLVARI(Gdo_undump, bool, FALSE) /* -u or dump seen? */ |
| 42 | |
| 43 | #if defined(MYMALLOC) && (defined(USE_5005THREADS) || defined(USE_ITHREADS)) |
| 44 | PERLVAR(Gmalloc_mutex, perl_mutex) /* Mutex for malloc */ |
| 45 | #endif |
| 46 | |
| 47 | #if defined(USE_ITHREADS) |
| 48 | PERLVAR(Gop_mutex, perl_mutex) /* Mutex for op refcounting */ |
| 49 | #endif |
| 50 | |
| 51 | #if defined(USE_5005THREADS) || defined(USE_ITHREADS) |
| 52 | PERLVAR(Gdollarzero_mutex, perl_mutex) /* Modifying $0 */ |
| 53 | #endif |
| 54 | |
| 55 | /* This is constant on most architectures, a global on OS/2 */ |
| 56 | PERLVARI(Gsh_path, const char *, SH_PATH)/* full path of shell */ |
| 57 | |
| 58 | #ifndef PERL_MICRO |
| 59 | /* If Perl has to ignore SIGPFE, this is its saved state. |
| 60 | * See perl.h macros PERL_FPU_INIT and PERL_FPU_{PRE,POST}_EXEC. */ |
| 61 | PERLVAR(Gsigfpe_saved, Sighandler_t) |
| 62 | #endif |
| 63 | |
| 64 | /* Restricted hashes placeholder value. |
| 65 | * The contents are never used, only the address. */ |
| 66 | PERLVAR(Gsv_placeholder, SV) |
| 67 | |
| 68 | #ifndef PERL_MICRO |
| 69 | PERLVARI(Gcsighandlerp, Sighandler_t, Perl_csighandler) /* Pointer to C-level sighandler */ |
| 70 | #endif |
| 71 | |
| 72 | #ifndef PERL_USE_SAFE_PUTENV |
| 73 | PERLVARI(Guse_safe_putenv, int, 1) |
| 74 | #endif |