mirror of
https://github.com/warmcat/libwebsockets.git
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17357ddd5a
From eventfd man page: Applications can use an eventfd file descriptor instead of a pipe (see pipe(2)) in all cases where a pipe is used simply to signal events. The kernel overhead of an eventfd file descriptor is much lower than that of a pipe, and only one file descriptor is required (versus the two required for a pipe).
176 lines
4.1 KiB
C
176 lines
4.1 KiB
C
/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2018 Andy Green <andy@warmcat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation:
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*
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* Included from lib/core/private.h if no explicit platform
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*/
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#include <fcntl.h>
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#include <strings.h>
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#include <unistd.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#include <poll.h>
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#include <netdb.h>
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#ifndef __cplusplus
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#include <errno.h>
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#endif
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#include <netdb.h>
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#include <signal.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/mman.h>
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#include <sys/un.h>
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#if defined(LWS_HAVE_EVENTFD)
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#include <sys/eventfd.h>
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#endif
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#if defined(__APPLE__)
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#include <machine/endian.h>
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#endif
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#if defined(__FreeBSD__)
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#include <sys/endian.h>
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#endif
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#if defined(__linux__)
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#include <endian.h>
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#endif
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#if defined(__QNX__)
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#include <gulliver.h>
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#if defined(__LITTLEENDIAN__)
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#define BYTE_ORDER __LITTLEENDIAN__
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#define LITTLE_ENDIAN __LITTLEENDIAN__
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#define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */
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#endif
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#if defined(__BIGENDIAN__)
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#define BYTE_ORDER __BIGENDIAN__
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#define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */
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#define BIG_ENDIAN __BIGENDIAN__
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#endif
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#endif
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#if defined(__sun) && defined(__GNUC__)
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#include <arpa/nameser_compat.h>
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#if !defined (BYTE_ORDER)
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#define BYTE_ORDER __BYTE_ORDER__
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#endif
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#if !defined(LITTLE_ENDIAN)
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#define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
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#endif
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#if !defined(BIG_ENDIAN)
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#define BIG_ENDIAN __ORDER_BIG_ENDIAN__
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#endif
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#endif /* sun + GNUC */
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#if !defined(BYTE_ORDER)
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#define BYTE_ORDER __BYTE_ORDER
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#endif
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#if !defined(LITTLE_ENDIAN)
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#define LITTLE_ENDIAN __LITTLE_ENDIAN
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#endif
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#if !defined(BIG_ENDIAN)
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#define BIG_ENDIAN __BIG_ENDIAN
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#endif
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#if defined(LWS_BUILTIN_GETIFADDRS)
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#include "./misc/getifaddrs.h"
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#else
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#if defined(__HAIKU__)
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#define _BSD_SOURCE
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#endif
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#include <ifaddrs.h>
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#endif
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#if defined (__sun) || defined(__HAIKU__) || defined(__QNX__) || defined(__ANDROID__)
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#include <syslog.h>
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#if defined(__ANDROID__)
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#include <sys/resource.h>
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#endif
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#else
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#include <sys/syslog.h>
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#endif
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#ifdef __QNX__
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# include "netinet/tcp_var.h"
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# define TCP_KEEPINTVL TCPCTL_KEEPINTVL
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# define TCP_KEEPIDLE TCPCTL_KEEPIDLE
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# define TCP_KEEPCNT TCPCTL_KEEPCNT
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#endif
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#define LWS_ERRNO errno
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#define LWS_EAGAIN EAGAIN
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#define LWS_EALREADY EALREADY
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#define LWS_EINPROGRESS EINPROGRESS
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#define LWS_EINTR EINTR
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#define LWS_EISCONN EISCONN
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#define LWS_ENOTCONN ENOTCONN
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#define LWS_EWOULDBLOCK EWOULDBLOCK
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#define LWS_EADDRINUSE EADDRINUSE
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#define lws_set_blocking_send(wsi)
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#define LWS_SOCK_INVALID (-1)
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struct lws_context;
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struct lws *
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wsi_from_fd(const struct lws_context *context, int fd);
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int
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insert_wsi(const struct lws_context *context, struct lws *wsi);
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void
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delete_from_fd(const struct lws_context *context, int fd);
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#ifndef LWS_NO_FORK
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#ifdef LWS_HAVE_SYS_PRCTL_H
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#include <sys/prctl.h>
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#endif
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#endif
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#define compatible_close(x) close(x)
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#define lws_plat_socket_offset() (0)
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/*
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* Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
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* but happily have something equivalent in the SO_NOSIGPIPE flag.
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*/
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#ifdef __APPLE__
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#define MSG_NOSIGNAL SO_NOSIGPIPE
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#endif
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/*
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* Solaris 11.X only supports POSIX 2001, MSG_NOSIGNAL appears in
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* POSIX 2008.
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*/
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#if defined(__sun) && !defined(MSG_NOSIGNAL)
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#define MSG_NOSIGNAL 0
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#endif
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