5092eb960c
2011-03-27 Tobias Burnus <burnus@net-b.de>
PR fortran/18918
* caf/libcaf.h: New - coarray communication library.
* caf/mpi.c: New.
* caf/single.c: New.
From-SVN: r171570
108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/* Single-image implementation of GNU Fortran Coarray Library
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Copyright (C) 2011
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Free Software Foundation, Inc.
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Contributed by Tobias Burnus <burnus@net-b.de>
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This file is part of the GNU Fortran Coarray Runtime Library (libcaf).
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Libcaf is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libcaf 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 General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "libcaf.h"
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#include <stdio.h> /* For fputs and fprintf. */
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#include <stdlib.h> /* For exit. */
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/* Define GFC_CAF_CHECK to enable run-time checking. */
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/* #define GFC_CAF_CHECK 1 */
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/* Single-image implementation of the CAF library.
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Note: For performance reasons -fcoarry=single should be used
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rather than this library. */
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void
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_gfortran_caf_init (int *argc __attribute__ ((unused)),
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char ***argv __attribute__ ((unused)),
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int *this_image, int *num_images)
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{
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*this_image = 1;
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*num_images = 1;
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}
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void
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_gfortran_caf_finalize (void)
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{
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}
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int
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_gfortran_caf_sync_all (char *errmsg __attribute__ ((unused)),
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int errmsg_len __attribute__ ((unused)))
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{
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return 0;
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}
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int
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_gfortran_caf_sync_images (int count __attribute__ ((unused)),
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int images[] __attribute__ ((unused)),
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char *errmsg __attribute__ ((unused)),
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int errmsg_len __attribute__ ((unused)))
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{
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#ifdef GFC_CAF_CHECK
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int i;
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for (i = 0; i < count; i++)
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if (images[i] != 1)
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{
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fprintf (stderr, "COARRAY ERROR: Invalid image index %d to SYNC "
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"IMAGES", images[i]);
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exit (1);
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}
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#endif
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return 0;
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}
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void
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_gfortran_caf_critical (void)
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{
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}
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void
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_gfortran_caf_end_critical (void)
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{
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}
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void
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_gfortran_caf_error_stop_str (const char *string, int32_t len)
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{
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fputs ("ERROR STOP ", stderr);
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while (len--)
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fputc (*(string++), stderr);
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fputs ("\n", stderr);
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exit (1);
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}
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void
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_gfortran_caf_error_stop (int32_t error)
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{
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fprintf (stderr, "ERROR STOP %d\n", error);
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exit (error);
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}
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