src/lib/nix/include/sys/epoll.h

// Copyright 2020 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SRC_LIB_NIX_INCLUDE_SYS_EPOLL_H_
#define SRC_LIB_NIX_INCLUDE_SYS_EPOLL_H_

#include <fcntl.h>
#include <stdint.h>
#include <sys/types.h>

#define __NEED_sigset_t

#include <bits/alltypes.h>

#define EPOLL_CLOEXEC O_CLOEXEC
#define EPOLL_NONBLOCK O_NONBLOCK

enum EPOLL_EVENTS { __EPOLL_DUMMY };
#define EPOLLIN 0x001
#define EPOLLPRI 0x002
#define EPOLLOUT 0x004
#define EPOLLRDNORM 0x040
#define EPOLLRDBAND 0x080
#define EPOLLWRNORM 0x100
#define EPOLLWRBAND 0x200
#define EPOLLMSG 0x400
#define EPOLLERR 0x008
#define EPOLLHUP 0x010
#define EPOLLRDHUP 0x2000
#define EPOLLEXCLUSIVE (1U << 28)
#define EPOLLWAKEUP (1U << 29)
#define EPOLLONESHOT (1U << 30)
#define EPOLLET (1U << 31)

#define EPOLL_CTL_ADD 1
#define EPOLL_CTL_DEL 2
#define EPOLL_CTL_MOD 3

typedef union epoll_data {
  void* ptr;
  int fd;
  uint32_t u32;
  uint64_t u64;
} epoll_data_t;

struct epoll_event {
  uint32_t events;
  epoll_data_t data;
};

#ifdef __cplusplus
extern "C" {
#endif

int epoll_create(int);
int epoll_create1(int);
int epoll_ctl(int, int, int, struct epoll_event*);
int epoll_wait(int, struct epoll_event*, int, int);
int epoll_pwait(int, struct epoll_event*, int, int, const sigset_t*);

#ifdef __cplusplus
}
#endif

#endif  // SRC_LIB_NIX_INCLUDE_SYS_EPOLL_H_