1 files changed, 60 insertions, 0 deletions
diff --git a/trunk/src/signal_check.c b/trunk/src/signal_check.c
new file mode 100644
index 000000000..77a2b1251
--- /dev/null
+++ b/trunk/src/signal_check.c
@@ -0,0 +1,60 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * (c)2004 by mackstann
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "signal_check.h"
+
+#include <errno.h>
+#include <stddef.h>
+
+static volatile sig_atomic_t __caught_signals[NSIG];
+
+static void __signal_handler(int sig)
+{
+	__caught_signals[sig] = 1;
+}
+
+static void __set_signal_handler(int sig, void (*handler) (int))
+{
+	struct sigaction act;
+	act.sa_flags = 0;
+	sigemptyset(&act.sa_mask);
+	act.sa_handler = handler;
+	while (sigaction(sig, &act, NULL) && errno == EINTR) ;
+}
+
+void signal_handle(int sig)
+{
+	__set_signal_handler(sig, __signal_handler);
+}
+
+void signal_unhandle(int sig)
+{
+	signal_clear(sig);
+	__set_signal_handler(sig, SIG_DFL);
+}
+
+int signal_is_pending(int sig)
+{
+	return __caught_signals[sig];
+}
+
+void signal_clear(int sig)
+{
+	__caught_signals[sig] = 0;
+}