#ifndef HEADER_CURL_SELECT_H #define HEADER_CURL_SELECT_H /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ***************************************************************************/ #include "curl_setup.h" #ifdef HAVE_SYS_POLL_H #include <sys/poll.h> #elif defined(HAVE_POLL_H) #include <poll.h> #endif /* * Definition of pollfd struct and constants for platforms lacking them. */ #if !defined(HAVE_STRUCT_POLLFD) && \ !defined(HAVE_SYS_POLL_H) && \ !defined(HAVE_POLL_H) #define POLLIN 0x01 #define POLLPRI 0x02 #define POLLOUT 0x04 #define POLLERR 0x08 #define POLLHUP 0x10 #define POLLNVAL 0x20 struct pollfd { curl_socket_t fd; short events; short revents; }; #endif #ifndef POLLRDNORM #define POLLRDNORM POLLIN #endif #ifndef POLLWRNORM #define POLLWRNORM POLLOUT #endif #ifndef POLLRDBAND #define POLLRDBAND POLLPRI #endif /* there are three CSELECT defines that are defined in the public header that are exposed to users, but this *IN2 bit is only ever used internally and therefore defined here */ #define CURL_CSELECT_IN2 (CURL_CSELECT_ERR << 1) int Curl_socket_check(curl_socket_t readfd, curl_socket_t readfd2, curl_socket_t writefd, long timeout_ms); /* provide the former API internally */ #define Curl_socket_ready(x,y,z) \ Curl_socket_check(x, CURL_SOCKET_BAD, y, z) int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms); /* On non-DOS and non-Winsock platforms, when Curl_ack_eintr is set, * EINTR condition is honored and function might exit early without * awaiting full timeout. Otherwise EINTR will be ignored and full * timeout will elapse. */ extern int Curl_ack_eintr; int Curl_wait_ms(int timeout_ms); #ifdef TPF int tpf_select_libcurl(int maxfds, fd_set* reads, fd_set* writes, fd_set* excepts, struct timeval* tv); #endif /* Winsock and TPF sockets are not in range [0..FD_SETSIZE-1], which unfortunately makes it impossible for us to easily check if they're valid */ #if defined(USE_WINSOCK) || defined(TPF) #define VALID_SOCK(x) 1 #define VERIFY_SOCK(x) Curl_nop_stmt #else #define VALID_SOCK(s) (((s) >= 0) && ((s) < FD_SETSIZE)) #define VERIFY_SOCK(x) do { \ if(!VALID_SOCK(x)) { \ SET_SOCKERRNO(EINVAL); \ return -1; \ } \ } WHILE_FALSE #endif #endif /* HEADER_CURL_SELECT_H */