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82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
#ifndef RUBY3_INTERN_SELECT_POSIX_H /*-*-C++-*-vi:se ft=cpp:*/
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#define RUBY3_INTERN_SELECT_POSIX_H
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/**
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* @file
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
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* implementation details. Don't take them as canon. They could
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* rapidly appear then vanish. The name (path) of this header file
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* is also an implementation detail. Do not expect it to persist
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* at the place it is now. Developers are free to move it anywhere
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* anytime at will.
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* @note To ruby-core: remember that this header can be possibly
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* recursively included from extension libraries written in C++.
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* Do not expect for instance `__VA_ARGS__` is always available.
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* We assume C99 for ruby itself but we don't assume languages of
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* extension libraries. They could be written in C++98.
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* @brief Public APIs to provide ::rb_fd_select().
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*/
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#include "ruby/impl/config.h"
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#ifdef HAVE_SYS_SELECT_H
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# include <sys/select.h> /* for select(2) (modern POSIX) */
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h> /* for select(2) (archaic UNIX) */
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#endif
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#include "ruby/impl/attr/pure.h"
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#include "ruby/impl/attr/const.h"
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typedef fd_set rb_fdset_t;
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#define rb_fd_zero FD_ZERO
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#define rb_fd_set FD_SET
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#define rb_fd_clr FD_CLR
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#define rb_fd_isset FD_ISSET
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#define rb_fd_init FD_ZERO
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#define rb_fd_select select
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/**@cond INTERNAL_MACRO */
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#define rb_fd_copy rb_fd_copy
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#define rb_fd_dup rb_fd_dup
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#define rb_fd_ptr rb_fd_ptr
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#define rb_fd_max rb_fd_max
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/** @endcond */
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static inline void
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rb_fd_copy(rb_fdset_t *dst, const fd_set *src, int n)
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{
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*dst = *src;
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}
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static inline void
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rb_fd_dup(rb_fdset_t *dst, const fd_set *src, int n)
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{
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*dst = *src;
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}
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RUBY3_ATTR_PURE()
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/* :TODO: can this function be __attribute__((returns_nonnull)) or not? */
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static inline fd_set *
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rb_fd_ptr(rb_fdset_t *f)
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{
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return f;
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}
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RUBY3_ATTR_CONST()
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static inline int
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rb_fd_max(const rb_fdset_t *f)
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{
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return FD_SETSIZE;
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}
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/* :FIXME: What are these? They don't exist for shibling implementations. */
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#define rb_fd_init_copy(d, s) (*(d) = *(s))
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#define rb_fd_term(f) ((void)(f))
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#endif /* RUBY3_INTERN_SELECT_POSIX_H */
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