85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/* Thread/recursion locking
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Copyright 2002 Free Software Foundation, Inc.
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Contributed by Paul Brook <paul@nowt.org> and Andy Vaught
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This file is part of the GNU Fortran 95 runtime library (libgfor).
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Libgfor is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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Libgfor is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with libgfor; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "config.h"
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#include <string.h>
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#include "libgfortran.h"
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#include "io.h"
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st_parameter ioparm;
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namelist_info * ionml;
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global_t g;
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/* library_start()-- Called with a library call is entered. */
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void
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library_start (void)
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{
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if (g.in_library)
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internal_error ("Recursive library calls not allowed");
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/* The in_library flag indicates whether we're currently processing a
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* library call. Some calls leave immediately, but READ and WRITE
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* processing return control to the caller but are still considered to
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* stay within the library. */
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g.in_library = 1;
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if (ioparm.iostat != NULL && ioparm.library_return == LIBRARY_OK)
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*ioparm.iostat = ERROR_OK;
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ioparm.library_return = LIBRARY_OK;
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}
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/* library_end()-- Called when a library call is complete in order to
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* clean up for the next call. */
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void
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library_end (void)
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{
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int t;
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namelist_info * t1, *t2;
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g.in_library = 0;
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filename = NULL;
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line = 0;
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t = ioparm.library_return;
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if (ionml != NULL)
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{
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t1 = ionml;
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while (t1 != NULL)
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{
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t2 = t1;
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t1 = t1->next;
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free_mem (t2);
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}
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}
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ionml = NULL;
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memset (&ioparm, '\0', sizeof (ioparm));
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ioparm.library_return = t;
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}
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