Squashed 'third_party/libevent/' content from commit d8ceae8
Change-Id: I84e1b23561eb225b9f288717b028e6bc9e5a27e1
git-subtree-dir: third_party/libevent
git-subtree-split: d8ceae81b83f3d0a56e2f41d4c429b2702a8e302
diff --git a/include/event2/event_struct.h b/include/event2/event_struct.h
new file mode 100644
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+++ b/include/event2/event_struct.h
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+/*
+ * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
+ * Copyright (c) 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 _EVENT2_EVENT_STRUCT_H_
+#define _EVENT2_EVENT_STRUCT_H_
+
+/** @file event2/event_struct.h
+
+ Structures used by event.h. Using these structures directly WILL harm
+ forward compatibility: be careful.
+
+ No field declared in this file should be used directly in user code. Except
+ for historical reasons, these fields would not be exposed at all.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <event2/event-config.h>
+#ifdef _EVENT_HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef _EVENT_HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+/* For int types. */
+#include <event2/util.h>
+
+/* For evkeyvalq */
+#include <event2/keyvalq_struct.h>
+
+#define EVLIST_TIMEOUT 0x01
+#define EVLIST_INSERTED 0x02
+#define EVLIST_SIGNAL 0x04
+#define EVLIST_ACTIVE 0x08
+#define EVLIST_INTERNAL 0x10
+#define EVLIST_INIT 0x80
+
+/* EVLIST_X_ Private space: 0x1000-0xf000 */
+#define EVLIST_ALL (0xf000 | 0x9f)
+
+/* Fix so that people don't have to run with <sys/queue.h> */
+#ifndef TAILQ_ENTRY
+#define _EVENT_DEFINED_TQENTRY
+#define TAILQ_ENTRY(type) \
+struct { \
+ struct type *tqe_next; /* next element */ \
+ struct type **tqe_prev; /* address of previous next element */ \
+}
+#endif /* !TAILQ_ENTRY */
+
+#ifndef TAILQ_HEAD
+#define _EVENT_DEFINED_TQHEAD
+#define TAILQ_HEAD(name, type) \
+struct name { \
+ struct type *tqh_first; \
+ struct type **tqh_last; \
+}
+#endif
+
+struct event_base;
+struct event {
+ TAILQ_ENTRY(event) ev_active_next;
+ TAILQ_ENTRY(event) ev_next;
+ /* for managing timeouts */
+ union {
+ TAILQ_ENTRY(event) ev_next_with_common_timeout;
+ int min_heap_idx;
+ } ev_timeout_pos;
+ evutil_socket_t ev_fd;
+
+ struct event_base *ev_base;
+
+ union {
+ /* used for io events */
+ struct {
+ TAILQ_ENTRY(event) ev_io_next;
+ struct timeval ev_timeout;
+ } ev_io;
+
+ /* used by signal events */
+ struct {
+ TAILQ_ENTRY(event) ev_signal_next;
+ short ev_ncalls;
+ /* Allows deletes in callback */
+ short *ev_pncalls;
+ } ev_signal;
+ } _ev;
+
+ short ev_events;
+ short ev_res; /* result passed to event callback */
+ short ev_flags;
+ ev_uint8_t ev_pri; /* smaller numbers are higher priority */
+ ev_uint8_t ev_closure;
+ struct timeval ev_timeout;
+
+ /* allows us to adopt for different types of events */
+ void (*ev_callback)(evutil_socket_t, short, void *arg);
+ void *ev_arg;
+};
+
+TAILQ_HEAD (event_list, event);
+
+#ifdef _EVENT_DEFINED_TQENTRY
+#undef TAILQ_ENTRY
+#endif
+
+#ifdef _EVENT_DEFINED_TQHEAD
+#undef TAILQ_HEAD
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _EVENT2_EVENT_STRUCT_H_ */