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Diffstat (limited to 'libgfortran/intrinsics/sleep.c')
-rw-r--r-- | libgfortran/intrinsics/sleep.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/libgfortran/intrinsics/sleep.c b/libgfortran/intrinsics/sleep.c new file mode 100644 index 00000000000..d79d8ba7b07 --- /dev/null +++ b/libgfortran/intrinsics/sleep.c @@ -0,0 +1,68 @@ +/* Implementation of the SLEEP intrinsic. + Copyright (C) 2005 Free Software Foundation, Inc. + Contributed by François-Xavier Coudert <coudert@clipper.ens.fr> + +This file is part of the GNU Fortran 95 runtime library (libgfortran). + +Libgfortran is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +In addition to the permissions in the GNU General Public License, the +Free Software Foundation gives you unlimited permission to link the +compiled version of this file into combinations with other programs, +and to distribute those combinations without any restriction coming +from the use of this file. (The General Public License restrictions +do apply in other respects; for example, they cover modification of +the file, and distribution when not linked into a combine +executable.) + +Libgfortran is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public +License along with libgfortran; see the file COPYING. If not, +write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#include "config.h" +#include "libgfortran.h" + +#include <errno.h> + +#include "../io/io.h" + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +/* SUBROUTINE SLEEP(SECONDS) + INTEGER, INTENT(IN) :: SECONDS + + A choice had to be made if SECONDS is negative. For g77, this is + equivalent to SLEEP(0). */ + +#ifdef HAVE_SLEEP +extern void sleep_i4_sub (GFC_INTEGER_4 *); +iexport_proto(sleep_i4_sub); + +void +sleep_i4_sub (GFC_INTEGER_4 *seconds) +{ + sleep (*seconds < 0 ? 0 : (unsigned int) *seconds); +} +iexport(sleep_i4_sub); + +extern void sleep_i8_sub (GFC_INTEGER_8 *); +iexport_proto(sleep_i8_sub); + +void +sleep_i8_sub (GFC_INTEGER_8 *seconds) +{ + sleep (*seconds < 0 ? 0 : (unsigned int) *seconds); +} +iexport(sleep_i8_sub); +#endif |