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- /* perlvars.h
- *
- * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
- * by Larry Wall and others
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Artistic License, as specified in the README file.
- *
- */
-
- /****************/
- /* Truly global */
- /****************/
-
- /* Don't forget to re-run embed.pl to propagate changes! */
-
- /* This file describes the "global" variables used by perl
- * This used to be in perl.h directly but we want to abstract out into
- * distinct files which are per-thread, per-interpreter or really global,
- * and how they're initialized.
- *
- * The 'G' prefix is only needed for vars that need appropriate #defines
- * generated in embed*.h. Such symbols are also used to generate
- * the appropriate export list for win32. */
-
- /* global state */
- PERLVAR(Gcurinterp, PerlInterpreter *)
- /* currently running interpreter
- * (initial parent interpreter under
- * useithreads) */
- #if defined(USE_ITHREADS)
- PERLVAR(Gthr_key, perl_key) /* key to retrieve per-thread struct */
- #endif
-
- /* constants (these are not literals to facilitate pointer comparisons)
- * (PERLVARISC really does create variables, despite its looks) */
- PERLVARISC(GYes, "1")
- PERLVARISC(GNo, "")
- PERLVARISC(Ghexdigit, "0123456789abcdef0123456789ABCDEF")
- PERLVARISC(Gpatleave, "\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}")
-
- /* XXX does anyone even use this? */
- PERLVARI(Gdo_undump, bool, FALSE) /* -u or dump seen? */
-
- #if defined(MYMALLOC) && defined(USE_ITHREADS)
- PERLVAR(Gmalloc_mutex, perl_mutex) /* Mutex for malloc */
- #endif
-
- #if defined(USE_ITHREADS)
- PERLVAR(Gop_mutex, perl_mutex) /* Mutex for op refcounting */
- #endif
-
- #ifdef USE_ITHREADS
- PERLVAR(Gdollarzero_mutex, perl_mutex) /* Modifying $0 */
- #endif
-
-
- /* This is constant on most architectures, a global on OS/2 */
- #ifdef OS2
- # define PERL___C
- #else
- # define PERL___C const
- #endif
- PERLVARI(Gsh_path, PERL___C char *, SH_PATH) /* full path of shell */
- #undef PERL___C
-
- #ifndef PERL_MICRO
- /* If Perl has to ignore SIGPFE, this is its saved state.
- * See perl.h macros PERL_FPU_INIT and PERL_FPU_{PRE,POST}_EXEC. */
- PERLVAR(Gsigfpe_saved, Sighandler_t)
- #endif
-
- /* Restricted hashes placeholder value.
- * The contents are never used, only the address. */
- PERLVAR(Gsv_placeholder, SV)
-
- #ifndef PERL_MICRO
- PERLVARI(Gcsighandlerp, Sighandler_t, Perl_csighandler) /* Pointer to C-level sighandler */
- #endif
-
- #ifndef PERL_USE_SAFE_PUTENV
- PERLVARI(Guse_safe_putenv, int, 1)
- #endif
-
- #ifdef USE_PERLIO
- PERLVARI(Gperlio_fd_refcnt, int*, 0) /* Pointer to array of fd refcounts. */
- PERLVARI(Gperlio_fd_refcnt_size, int, 0) /* Size of the array */
- PERLVARI(Gperlio_debug_fd, int, 0) /* the fd to write perlio debug into, 0 means not set yet */
- #endif
-
- #ifdef HAS_MMAP
- PERLVARI(Gmmap_page_size, IV, 0)
- #endif
-
- #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS)||defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
- PERLVARI(Gsig_handlers_initted, int, 0)
- #endif
- #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
- PERLVARA(Gsig_ignoring, SIG_SIZE, int) /* which signals we are ignoring */
- #endif
- #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
- PERLVARA(Gsig_defaulting, SIG_SIZE, int)
- #endif
-
- #ifndef PERL_IMPLICIT_CONTEXT
- PERLVAR(Gsig_sv, SV*)
- #endif
-
- /* XXX signals are process-wide anyway, so we
- * ignore the implications of this for threading */
- #ifndef HAS_SIGACTION
- PERLVARI(Gsig_trapped, int, 0)
- #endif
-
- #ifdef DEBUGGING
- PERLVAR(Gwatch_pvx, char*)
- #endif
-
- #ifdef PERL_GLOBAL_STRUCT
- PERLVAR(Gppaddr, Perl_ppaddr_t*) /* or opcode.h */
- PERLVAR(Gcheck, Perl_check_t *) /* or opcode.h */
- PERLVARA(Gfold_locale, 256, unsigned char) /* or perl.h */
- #endif
-
- #ifdef PERL_NEED_APPCTX
- PERLVAR(Gappctx, void*) /* the application context */
- #endif
-
- PERLVAR(Gop_sequence, HV*) /* dump.c */
- PERLVARI(Gop_seq, UV, 0) /* dump.c */
-
- #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
- PERLVAR(Gtimesbase, struct tms)
- #endif
-
- /* allocate a unique index to every module that calls MY_CXT_INIT */
-
- #ifdef PERL_IMPLICIT_CONTEXT
- # ifdef USE_ITHREADS
- PERLVAR(Gmy_ctx_mutex, perl_mutex)
- # endif
- PERLVARI(Gmy_cxt_index, int, 0)
- #endif
-
- #if defined(USE_ITHREADS)
- PERLVAR(Ghints_mutex, perl_mutex) /* Mutex for refcounted he refcounting */
- #endif
-
- #if defined(USE_ITHREADS)
- PERLVAR(Gperlio_mutex, perl_mutex) /* Mutex for perlio fd refcounts */
- #endif
-
- /* this is currently set without MUTEX protection, so keep it a type which
- * can be set atomically (ie not a bit field) */
- PERLVARI(Gveto_cleanup, int, FALSE) /* exit without cleanup */
-
- /* dummy variables that hold pointers to both runops functions, thus forcing
- * them *both* to get linked in (useful for Peek.xs, debugging etc) */
-
- PERLVARI(Grunops_std, runops_proc_t, MEMBER_TO_FPTR(Perl_runops_standard))
- PERLVARI(Grunops_dbg, runops_proc_t, MEMBER_TO_FPTR(Perl_runops_debug))
-
-
- /* These are baked at compile time into any shared perl library.
- In future 5.10.x releases this will allow us in main() to sanity test the
- library we're linking against. */
-
- PERLVARI(Grevision, U8, PERL_REVISION)
- PERLVARI(Gversion, U8, PERL_VERSION)
- PERLVARI(Gsubversion, U8, PERL_SUBVERSION)
-
- #if defined(MULTIPLICITY)
- # define PERL_INTERPRETER_SIZE_UPTO_MEMBER(member) \
- STRUCT_OFFSET(struct interpreter, member) + \
- sizeof(((struct interpreter*)0)->member)
-
- /* These might be useful. */
- PERLVARI(Ginterp_size, U16, sizeof(struct interpreter))
- #if defined(PERL_GLOBAL_STRUCT)
- PERLVARI(Gglobal_struct_size, U16, sizeof(struct perl_vars))
- #endif
-
- /* This will be useful for subsequent releases, because this has to be the
- same in your libperl as in main(), else you have a mismatch and must abort.
- */
- PERLVARI(Ginterp_size_5_10_0, U16,
- PERL_INTERPRETER_SIZE_UPTO_MEMBER(PERL_LAST_5_10_0_INTERP_MEMBER))
- #endif
-