Squashed 'third_party/libevent/' content from commit d8ceae8
Change-Id: I84e1b23561eb225b9f288717b028e6bc9e5a27e1
git-subtree-dir: third_party/libevent
git-subtree-split: d8ceae81b83f3d0a56e2f41d4c429b2702a8e302
diff --git a/evsignal-internal.h b/evsignal-internal.h
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+/*
+ * Copyright 2000-2007 Niels Provos <provos@citi.umich.edu>
+ * Copyright 2007-2012 Niels Provos and Nick Mathewson
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _EVSIGNAL_H_
+#define _EVSIGNAL_H_
+
+#ifndef evutil_socket_t
+#include "event2/util.h"
+#endif
+#include <signal.h>
+
+typedef void (*ev_sighandler_t)(int);
+
+/* Data structure for the default signal-handling implementation in signal.c
+ */
+struct evsig_info {
+ /* Event watching ev_signal_pair[1] */
+ struct event ev_signal;
+ /* Socketpair used to send notifications from the signal handler */
+ evutil_socket_t ev_signal_pair[2];
+ /* True iff we've added the ev_signal event yet. */
+ int ev_signal_added;
+ /* Count of the number of signals we're currently watching. */
+ int ev_n_signals_added;
+
+ /* Array of previous signal handler objects before Libevent started
+ * messing with them. Used to restore old signal handlers. */
+#ifdef _EVENT_HAVE_SIGACTION
+ struct sigaction **sh_old;
+#else
+ ev_sighandler_t **sh_old;
+#endif
+ /* Size of sh_old. */
+ int sh_old_max;
+};
+int evsig_init(struct event_base *);
+void evsig_dealloc(struct event_base *);
+
+void evsig_set_base(struct event_base *base);
+
+#endif /* _EVSIGNAL_H_ */