globals.c

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/*

  Copyright (C) 2000, 2001, Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2.1 of the GNU Lesser General Public License 
  as published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU Lesser General Public 
  License along with this program; if not, write the Free Software 
  Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, 
  USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan

*/



#pragma ident "@(#) libf/fio/globals.c  92.2    06/23/99 16:08:16"

/*
 *      globals.c       This module contains global data and tables with
 *                      dynamic data.
 */

#include <fortran.h>
#include "fio.h"
#include <cray/mtlock.h>

/************************************************************************
 *
 *      Shared global data.
 *
 ***********************************************************************/

plock_t _openlock;                      /* Unit tables lock.  Lock this 
                                         * whenever connecting or disconnecting
                                         * a unit.   This lock must be obtained
                                         * before the unit lock to prevent 
                                         * deadlock. */
plock_t _ioblock;                       /* __iob table lock     */
plock_t _parselock;                     /* Format parsing lock  */
plock_t _stdin_lock;                    /* Stdin lock                   */
plock_t _stdout_lock;                   /* Stdout lock                  */
plock_t _stderr_lock;                   /* Stderr lock                  */
int     _f_rcsz         = RECMAX;       /* Default sequential formatted RECL */
int     _f_ldsz         = RECMAXLDO;    /* Default list-directed output RECL */

unit_htable _fort_unit[HASH_SIZE];      /* hash table of unit pointers */

unit    *_fort_internal_unit;           /* pointer to unit for internal files */

#ifdef  _F_REAL4
int     _dreal4;                        /* decimal digits for real (KIND=4) */
#endif
int     _dreal8;                        /* decimal digits for real (KIND=8) */
int     _dreal16;                       /* decimal digits for real (KIND=16) */

long    _zero_entity    = 0;            /* Used as addr for zero length */
                                        /* entity for PRESENT function  */


/************************************************************************
 *
 *      Private global data.
 *
 *      The _tsk_fiostate structure is taskcommon, so the C compiler kindly
 *      replicates it for every active task.  
 *
 ***********************************************************************/
#ifdef  _CRAY1
#pragma _CRI taskcommon _tsk_fiostate
#endif
struct fiostate _tsk_fiostate;

SHARED_CC_BUG_WORKAROUND(_globals_kludge_func)