Import of Empire 4.2.12

src/lib/gen/signal.c

@@ -0,0 +1,105 @@
+/*
+ *  Empire - A multi-player, client/server Internet based war game.
+ *  Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ *                           Ken Stevens, Steve McClure
+ *
+ *  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
+ *
+ *  ---
+ *
+ *  See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
+ *  related information and legal notices. It is expected that any future
+ *  projects/authors will amend these files as needed.
+ *
+ *  ---
+ *
+ *  sig.c: block and unblock signals for critical sections
+ * 
+ *  Known contributors to this file:
+ *     Doug Hay, 1998
+ *     Steve McClure, 1998
+ */
+
+#include "misc.h"
+#include "gen.h"
+#include <signal.h>
+
+u_int	mask;
+
+void
+blocksig(void)
+{
+#if !defined(_WIN32)
+	mask = sigsetmask(0xffffffff);
+#endif
+}
+
+void
+unblocksig(void)
+{
+#if !defined(_WIN32)
+	sigsetmask(mask);
+#endif
+}
+
+#ifdef sys5
+const s_char *sys_siglist[] = {
+	"no signal",
+	"interrupt",
+	"quit",
+	"illegal instruction",
+	"trace trap",
+	"IOT instruction",
+	"system crash imminent",
+	"floating point exception",
+	"kill",
+	"bus error",
+	"segmentation violation",
+	"bad argument to system call",
+	"write on a pipe with no one to read it",
+	"alarm clock",
+	"software termination",
+	"user defined signal 1",
+	"user defined signal 2",
+	"death of a child",
+	"power-fail restart",
+	"asychronous i/o",
+	"PTY read/write",
+	"I/O intervention required",
+	"monitor mode granted",
+	"monitor mode retracted",
+	"sound ack",
+	"data pending",
+};
+#else
+#if (!defined __ppc__) && (!defined linux) && (!defined FBSD) && (!defined __linux__)
+/* linux and osx declare sys_siglist in signal.h */
+extern	s_char *sys_siglist[];
+#endif /* linux */
+#endif /* sys5 */
+
+const s_char *
+signame(int sig)
+{
+#ifdef POSIX_SIGNALS
+	if (sig <= 0 || sig > _sys_nsig)
+		return "bad signal";
+	return _sys_siglist[sig];
+#else /* POSIX_SIGNALS */
+	if (sig <= 0 || sig > NSIG)
+		return "bad signal";
+	return sys_siglist[sig];
+#endif /* POSIX_SIGNALS */
+}