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authorJing Yu <jingyu@google.com>2009-11-05 15:11:04 -0800
committerJing Yu <jingyu@google.com>2009-11-05 15:11:04 -0800
commitdf62c1c110e8532b995b23540b7e3695729c0779 (patch)
treedbbd4cbdb50ac38011e058a2533ee4c3168b0205 /gcc-4.2.1/libgfortran/intrinsics/signal.c
parent8d401cf711539af5a2f78d12447341d774892618 (diff)
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Check in gcc sources for prebuilt toolchains in Eclair.
Diffstat (limited to 'gcc-4.2.1/libgfortran/intrinsics/signal.c')
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diff --git a/gcc-4.2.1/libgfortran/intrinsics/signal.c b/gcc-4.2.1/libgfortran/intrinsics/signal.c
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+/* Implementation of the SIGNAL and ALARM g77 intrinsics
+ 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., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
+
+#include "config.h"
+#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>
+
+#ifdef HAVE_INTPTR_T
+# define INTPTR_T intptr_t
+#else
+# define INTPTR_T int
+#endif
+
+/* 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 (int *, void (*)(int), int *);
+iexport_proto(alarm_sub);
+
+void
+alarm_sub (int *seconds, void (*handler)(int), int *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);
+
+
+/* ALARM intrinsic with INTEGER as handler */
+extern void alarm_sub_int (int *, int *, int *);
+iexport_proto(alarm_sub_int);
+
+void
+alarm_sub_int (int *seconds, int *handler, int *status)
+{
+#if defined (SIGALRM) && defined (HAVE_ALARM) && defined (HAVE_SIGNAL)
+ if (status != NULL)
+ {
+ if (signal (SIGALRM, (void (*)(int)) *handler) == SIG_ERR)
+ *status = -1;
+ else
+ *status = alarm (*seconds);
+ }
+ else
+ {
+ signal (SIGALRM, (void (*)(int)) *handler);
+ alarm (*seconds);
+ }
+#else
+ errno = ENOSYS;
+ if (status != NULL)
+ *status = -1;
+#endif
+}
+iexport(alarm_sub_int);
+