native_client_sdk/src/libraries/nacl_io/include/sys/poll.h

   1 /* Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2  * Use of this source code is governed by a BSD-style license that can be
   3  * found in the LICENSE file. */
   4
   5 #ifndef LIBRARIES_NACL_IO_INCLUDE_SYS_POLL_H_
   6 #define LIBRARIES_NACL_IO_INCLUDE_SYS_POLL_H_
   7
   8 #include <stdint.h>
   9 #include <sys/cdefs.h>
  10
  11 /* This header adds definitions of flags and structures for use with poll on
  12  * toolchains with 'C' libraries which do not normally supply poll. */
  13
  14 /* Node state flags */
  15 #define POLLIN   0x0001   /* Will not block READ select/poll. */
  16 #define POLLPRI  0x0002   /* There is urgent data to read. */
  17 #define POLLOUT  0x0004   /* Will not block WRITE select/poll. */
  18 #define POLLERR  0x0008   /* Will not block EXECPT select/poll. */
  19 #define POLLHUP  0x0010   /* Connection closed on far side. */
  20 #define POLLNVAL 0x0020   /* Invalid FD. */
  21
  22 /* Number of file descriptors. */
  23 typedef int nfds_t;
  24
  25 struct pollfd {
  26   int fd;
  27   uint16_t events;
  28   uint16_t revents;
  29 };
  30
  31 __BEGIN_DECLS
  32
  33 int poll(struct pollfd* __fds, nfds_t __nfds, int __timeout);
  34
  35 __END_DECLS
  36
  37 #endif  /* LIBRARIES_NACL_IO_INCLUDE_SYS_POLL_H_ */