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f786fce914
Ref: https://curl.se/dev/log.cgi?id=20240605035856-3529577 Reported-by: Marcel Raad Closes #13888
99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
#ifndef HEADER_CURL_SOCKETPAIR_H
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#define HEADER_CURL_SOCKETPAIR_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curl_setup.h"
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#if defined(HAVE_EVENTFD) && \
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defined(__x86_64__) && \
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defined(__aarch64__) && \
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defined(__ia64__) && \
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defined(__ppc64__) && \
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defined(__mips64) && \
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defined(__sparc64__) && \
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defined(__riscv_64e) && \
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defined(__s390x__)
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/* Use eventfd only with 64-bit CPU architectures because eventfd has a
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* stringent rule of requiring the 8-byte buffer when calling read(2) and
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* write(2) on it. In some rare cases, the C standard library implementation
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* on a 32-bit system might choose to define uint64_t as a 32-bit type for
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* various reasons (memory limitations, compatibility with older code),
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* which makes eventfd broken.
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*/
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#define USE_EVENTFD 1
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#define wakeup_write write
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#define wakeup_read read
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#define wakeup_close close
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#define wakeup_create(p,nb) Curl_eventfd(p,nb)
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#include <curl/curl.h>
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int Curl_eventfd(curl_socket_t socks[2], bool nonblocking);
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#elif defined(HAVE_PIPE)
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#define wakeup_write write
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#define wakeup_read read
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#define wakeup_close close
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#define wakeup_create(p,nb) Curl_pipe(p,nb)
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#include <curl/curl.h>
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int Curl_pipe(curl_socket_t socks[2], bool nonblocking);
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#else /* !USE_EVENTFD && !HAVE_PIPE */
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#define wakeup_write swrite
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#define wakeup_read sread
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#define wakeup_close sclose
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#if defined(USE_UNIX_SOCKETS) && defined(HAVE_SOCKETPAIR)
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#define SOCKETPAIR_FAMILY AF_UNIX
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#elif !defined(HAVE_SOCKETPAIR)
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#define SOCKETPAIR_FAMILY 0 /* not used */
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#else
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#error "unsupported unix domain and socketpair build combo"
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#endif
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#ifdef SOCK_CLOEXEC
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#define SOCKETPAIR_TYPE (SOCK_STREAM | SOCK_CLOEXEC)
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#else
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#define SOCKETPAIR_TYPE SOCK_STREAM
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#endif
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#define wakeup_create(p,nb)\
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Curl_socketpair(SOCKETPAIR_FAMILY, SOCKETPAIR_TYPE, 0, p, nb)
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#endif /* USE_EVENTFD */
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#ifndef CURL_DISABLE_SOCKETPAIR
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#include <curl/curl.h>
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int Curl_socketpair(int domain, int type, int protocol,
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curl_socket_t socks[2], bool nonblocking);
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#endif
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#endif /* HEADER_CURL_SOCKETPAIR_H */
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