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Diffstat (limited to 'libgfortran/intrinsics/signal.c')
| -rw-r--r-- | libgfortran/intrinsics/signal.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/libgfortran/intrinsics/signal.c b/libgfortran/intrinsics/signal.c new file mode 100644 index 000000000..66e54f33a --- /dev/null +++ b/libgfortran/intrinsics/signal.c @@ -0,0 +1,243 @@ +/* Implementation of the SIGNAL and ALARM g77 intrinsics + Copyright (C) 2005, 2007, 2009 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 3 of the License, or (at your option) any later version. + +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. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#include "libgfortran.h" + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif + +#ifdef HAVE_INTTYPES_H +#include <inttypes.h> +#endif + +#include <errno.h> + +/* SIGNAL subroutine with PROCEDURE as handler */ +extern void signal_sub (int *, void (*)(int), int *); +iexport_proto(signal_sub); + +void +signal_sub (int *number, void (*handler)(int), int *status) +{ +#ifdef HAVE_SIGNAL + intptr_t ret; + + if (status != NULL) + { + ret = (intptr_t) signal (*number, handler); + *status = (int) ret; + } + else + signal (*number, handler); +#else + errno = ENOSYS; + if (status != NULL) + *status = -1; +#endif +} +iexport(signal_sub); + + +/* SIGNAL subroutine with INTEGER as handler */ +extern void signal_sub_int (int *, int *, int *); +iexport_proto(signal_sub_int); + +void +signal_sub_int (int *number, int *handler, int *status) +{ +#ifdef HAVE_SIGNAL + intptr_t ptr = *handler, ret; + + if (status != NULL) + { + ret = (intptr_t) signal (*number, (void (*)(int)) ptr); + *status = (int) ret; + } + else + signal (*number, (void (*)(int)) ptr); +#else + errno = ENOSYS; + if (status != NULL) + *status = -1; +#endif +} +iexport(signal_sub_int); + + +/* SIGNAL function with PROCEDURE as handler */ +extern int signal_func (int *, void (*)(int)); +iexport_proto(signal_func); + +int +signal_func (int *number, void (*handler)(int)) +{ + int status; + signal_sub (number, handler, &status); + return status; +} +iexport(signal_func); + + +/* SIGNAL function with INTEGER as handler */ +extern int signal_func_int (int *, int *); +iexport_proto(signal_func_int); + +int +signal_func_int (int *number, int *handler) +{ + int status; + signal_sub_int (number, handler, &status); + return status; +} +iexport(signal_func_int); + + + +/* ALARM intrinsic with PROCEDURE as handler */ +extern void alarm_sub_i4 (int *, void (*)(int), GFC_INTEGER_4 *); +iexport_proto(alarm_sub_i4); + +void +alarm_sub_i4 (int * seconds __attribute__ ((unused)), + void (*handler)(int) __attribute__ ((unused)), + GFC_INTEGER_4 *status) +{ +#if defined (SIGALRM) && defined (HAVE_ALARM) && defined (HAVE_SIGNAL) + if (status != NULL) + { + if (signal (SIGALRM, handler) == SIG_ERR) + *status = -1; + else + *status = alarm (*seconds); + } + else + { + signal (SIGALRM, handler); + alarm (*seconds); + } +#else + errno = ENOSYS; + if (status != NULL) + *status = -1; +#endif +} +iexport(alarm_sub_i4); + + +extern void alarm_sub_i8 (int *, void (*)(int), GFC_INTEGER_8 *); +iexport_proto(alarm_sub_i8); + +void +alarm_sub_i8 (int *seconds __attribute__ ((unused)), + void (*handler)(int) __attribute__ ((unused)), + GFC_INTEGER_8 *status) +{ +#if defined (SIGALRM) && defined (HAVE_ALARM) && defined (HAVE_SIGNAL) + if (status != NULL) + { + if (signal (SIGALRM, handler) == SIG_ERR) + *status = -1; + else + *status = alarm (*seconds); + } + else + { + signal (SIGALRM, handler); + alarm (*seconds); + } +#else + errno = ENOSYS; + if (status != NULL) + *status = -1; +#endif +} +iexport(alarm_sub_i8); + + +/* ALARM intrinsic with INTEGER as handler */ +extern void alarm_sub_int_i4 (int *, int *, GFC_INTEGER_4 *); +iexport_proto(alarm_sub_int_i4); + +void +alarm_sub_int_i4 (int *seconds __attribute__ ((unused)), + int *handler __attribute__ ((unused)), + GFC_INTEGER_4 *status) +{ +#if defined (SIGALRM) && defined (HAVE_ALARM) && defined (HAVE_SIGNAL) + if (status != NULL) + { + if (signal (SIGALRM, (void (*)(int)) (intptr_t) *handler) == SIG_ERR) + *status = -1; + else + *status = alarm (*seconds); + } + else + { + signal (SIGALRM, (void (*)(int)) (intptr_t) *handler); + alarm (*seconds); + } +#else + errno = ENOSYS; + if (status != NULL) + *status = -1; +#endif +} +iexport(alarm_sub_int_i4); + + +extern void alarm_sub_int_i8 (int *, int *, GFC_INTEGER_8 *); +iexport_proto(alarm_sub_int_i8); + +void +alarm_sub_int_i8 (int *seconds __attribute__ ((unused)), + int *handler __attribute__ ((unused)), + GFC_INTEGER_8 *status) +{ +#if defined (SIGALRM) && defined (HAVE_ALARM) && defined (HAVE_SIGNAL) + if (status != NULL) + { + if (signal (SIGALRM, (void (*)(int)) (intptr_t) *handler) == SIG_ERR) + *status = -1; + else + *status = alarm (*seconds); + } + else + { + signal (SIGALRM, (void (*)(int)) (intptr_t) *handler); + alarm (*seconds); + } +#else + errno = ENOSYS; + if (status != NULL) + *status = -1; +#endif +} +iexport(alarm_sub_int_i8); + |