From e38ea5f90ea79e1240b9f96145b01d35e4ac15ad Mon Sep 17 00:00:00 2001
From: Kevin Dalley <kevind@ssl.berkeley.edu>
Date: Wed, 17 Mar 2004 05:01:41 +0000
Subject: [PATCH] * lib/sighandle.h, lib/sighandle.C: signal handling code, new
 files.

svn path=/trunk/boinc/; revision=3090
---
 lib/sighandle.C | 72 +++++++++++++++++++++++++++++++++++++++++++++++++
 lib/sighandle.h | 31 +++++++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100644 lib/sighandle.C
 create mode 100644 lib/sighandle.h

diff --git a/lib/sighandle.C b/lib/sighandle.C
new file mode 100644
index 0000000000..ab8b62d8d9
--- /dev/null
+++ b/lib/sighandle.C
@@ -0,0 +1,72 @@
+// The contents of this file are subject to the BOINC Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License. You may obtain a copy of the License at
+// http://boinc.berkeley.edu/license_1.0.txt
+//
+// Software distributed under the License is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
+// License for the specific language governing rights and limitations
+// under the License.
+//
+// The Original Code is the Berkeley Open Infrastructure for Network Computing.
+//
+// The Initial Developer of the Original Code is the SETI@home project.
+// Portions created by the SETI@home project are Copyright (C) 2002
+// University of California at Berkeley. All Rights Reserved.
+//
+// Contributor(s):
+// Thomas Horsten <thomas@horsten.com>
+//
+
+
+#ifdef _WIN32
+#include "stdafx.h"
+#else
+#include "config.h"
+#endif
+#ifdef HAVE_SIGNAL_H
+#include <signal.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include "sighandle.h"
+
+#ifdef HAVE_SIGNAL_H
+// Set a signal handler but only if it is not currently ignored
+void boinc_set_signal_handler(int sig, RETSIGTYPE (*handler)(int))
+{
+#ifdef HAVE_SIGACTION
+    struct sigaction temp;
+    sigaction(sig, NULL, &temp);
+    if (temp.sa_handler != SIG_IGN) {
+	 temp.sa_handler = handler;
+	 sigemptyset(&temp.sa_mask);
+	 sigaction(sig, &temp, NULL);
+    }
+#else
+    void (*temp)(int);
+    temp = signal(sig, boinc_catch_signal);
+    if (temp == SIG_IGN) {
+	 signal(sig, SIG_IGN);
+    }
+#endif /* HAVE_SIGACTION */
+}
+
+// Set a signal handler but even if it is currently ignored
+void boinc_set_signal_handler_force(int sig, RETSIGTYPE (*handler)(int))
+{
+#ifdef HAVE_SIGACTION
+    struct sigaction temp;
+    sigaction(sig, NULL, &temp);
+	 temp.sa_handler = handler;
+	 sigemptyset(&temp.sa_mask);
+	 sigaction(sig, &temp, NULL);
+#else
+    void (*temp)(int);
+    temp = signal(sig, boinc_catch_signal);
+	 signal(sig, SIG_IGN);
+#endif /* HAVE_SIGACTION */
+}
+
+#endif /* HAVE_SIGNAL_H */
diff --git a/lib/sighandle.h b/lib/sighandle.h
new file mode 100644
index 0000000000..acfaeff347
--- /dev/null
+++ b/lib/sighandle.h
@@ -0,0 +1,31 @@
+// The contents of this file are subject to the BOINC Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License. You may obtain a copy of the License at
+// http://boinc.berkeley.edu/license_1.0.txt
+//
+// Software distributed under the License is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
+// License for the specific language governing rights and limitations
+// under the License.
+//
+// The Original Code is the Berkeley Open Infrastructure for Network Computing.
+//
+// The Initial Developer of the Original Code is the SETI@home project.
+// Portions created by the SETI@home project are Copyright (C) 2002
+// University of California at Berkeley. All Rights Reserved.
+//
+// Contributor(s):
+
+#ifndef SIGHANDLE_H
+#define SIGHANDLE_H
+
+#ifdef _WIN32
+#include "stdafx.h"
+#else
+#include "config.h"
+#endif
+
+void boinc_set_signal_handler(int sig, RETSIGTYPE (*handler)(int));
+void boinc_set_signal_handler_force(int sig, RETSIGTYPE (*handler)(int));
+
+#endif /* SIGHANDLE_H */