Event.h

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/*
 * Copyright 2016-present Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#ifdef _MSC_VER
// This needs to be before the libevent include.
#include <folly/portability/Windows.h>
#endif

#include <event.h>

#ifdef _MSC_VER
#include <event2/event_compat.h> // @manual
#include <folly/portability/Fcntl.h>
#endif

#include <folly/net/detail/SocketFileDescriptorMap.h>

namespace folly {
#ifdef _MSC_VER
using libevent_fd_t = evutil_socket_t;
#else
using libevent_fd_t = int;
#endif

inline libevent_fd_t getLibeventFd(int fd) {
  return netops::detail::SocketFileDescriptorMap::fdToSocket(fd);
}

inline int libeventFdToFd(libevent_fd_t fd) {
  return netops::detail::SocketFileDescriptorMap::socketToFd(fd);
}

using EventSetCallback = void (*)(libevent_fd_t, short, void*);
inline void
folly_event_set(event* e, int fd, short s, EventSetCallback f, void* arg) {
  auto lfd = getLibeventFd(fd);
  event_set(e, lfd, s, f, arg);
}
} // namespace folly