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#ifndef HEADER_CURL_SOCKETPAIR_H
#define HEADER_CURL_SOCKETPAIR_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 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 https://curl.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.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
#if defined(HAVE_EVENTFD) && \
defined(__x86_64__) && \
defined(__aarch64__) && \
defined(__ia64__) && \
defined(__ppc64__) && \
defined(__mips64) && \
defined(__sparc64__) && \
defined(__riscv_64e) && \
defined(__s390x__)
/* Use eventfd only with 64-bit CPU architectures because eventfd has a
* stringent rule of requiring the 8-byte buffer when calling read(2) and
* write(2) on it. In some rare cases, the C standard library implementation
* on a 32-bit system might choose to define uint64_t as a 32-bit type for
* various reasons (memory limitations, compatibility with older code),
* which makes eventfd broken.
*/
#define USE_EVENTFD 1
#define wakeup_write write
#define wakeup_read read
#define wakeup_close close
#define wakeup_create(p,nb) Curl_eventfd(p,nb)
#include <curl/curl.h>
int Curl_eventfd(curl_socket_t socks[2], bool nonblocking);
#elif defined(HAVE_PIPE)
#define wakeup_write write
#define wakeup_read read
#define wakeup_close close
#define wakeup_create(p,nb) Curl_pipe(p,nb)
#include <curl/curl.h>
int Curl_pipe(curl_socket_t socks[2], bool nonblocking);
#else /* !USE_EVENTFD && !HAVE_PIPE */
#define wakeup_write swrite
#define wakeup_read sread
#define wakeup_close sclose
#if defined(USE_UNIX_SOCKETS) && defined(HAVE_SOCKETPAIR)
#define SOCKETPAIR_FAMILY AF_UNIX
#elif !defined(HAVE_SOCKETPAIR)
#define SOCKETPAIR_FAMILY 0 /* not used */
#else
#error "unsupported unix domain and socketpair build combo"
#endif
#ifdef SOCK_CLOEXEC
#define SOCKETPAIR_TYPE (SOCK_STREAM | SOCK_CLOEXEC)
#else
#define SOCKETPAIR_TYPE SOCK_STREAM
#endif
#define wakeup_create(p,nb)\
Curl_socketpair(SOCKETPAIR_FAMILY, SOCKETPAIR_TYPE, 0, p, nb)
#endif /* USE_EVENTFD */
#ifndef CURL_DISABLE_SOCKETPAIR
#include <curl/curl.h>
int Curl_socketpair(int domain, int type, int protocol,
curl_socket_t socks[2], bool nonblocking);
#endif
#endif /* HEADER_CURL_SOCKETPAIR_H */
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