perlvars.h   [plain text]


/*    perlvars.h
 *
 *    Copyright (C) 1999, 2000, 2001, 2002, 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_5005THREADS) || defined(USE_ITHREADS)
PERLVAR(Gthr_key,	perl_key)	/* key to retrieve per-thread struct */
#endif

/* constants (these are not literals to facilitate pointer comparisons) */
PERLVARIC(GYes,		char *, "1")
PERLVARIC(GNo,		char *, "")
PERLVARIC(Ghexdigit,	char *, "0123456789abcdef0123456789ABCDEF")
PERLVARIC(Gpatleave,	char *, "\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}")

/* XXX does anyone even use this? */
PERLVARI(Gdo_undump,	bool,	FALSE)	/* -u or dump seen? */

#if defined(MYMALLOC) && (defined(USE_5005THREADS) || 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

#if defined(USE_5005THREADS) || defined(USE_ITHREADS)
PERLVAR(Gdollarzero_mutex, perl_mutex)	/* Modifying $0 */
#endif

/* This is constant on most architectures, a global on OS/2 */
PERLVARI(Gsh_path,	char *,	SH_PATH)/* full path of shell */