Ruby 3.5.0dev (2025-02-22 revision 412997300569c1853c09813e4924b6df3d7e8669)
largesize.h
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1#ifndef RBIMPL_INTERN_SELECT_LARGESIZE_H /*-*-C++-*-vi:se ft=cpp:*/
2#define RBIMPL_INTERN_SELECT_LARGESIZE_H
58
60#define rb_fd_ptr rb_fd_ptr
61#define rb_fd_max rb_fd_max
64struct timeval;
65
71typedef struct {
72 int maxfd;
73 fd_set *fdset;
75
86
97
106
115void rb_fd_set(int fd, rb_fdset_t *f);
116
125void rb_fd_clr(int fd, rb_fdset_t *f);
126
138int rb_fd_isset(int fd, const rb_fdset_t *f);
139
148void rb_fd_copy(rb_fdset_t *dst, const fd_set *src, int max);
149
158void rb_fd_dup(rb_fdset_t *dst, const rb_fdset_t *src);
159
177int rb_fd_select(int nfds, rb_fdset_t *rfds, rb_fdset_t *wfds, rb_fdset_t *efds, struct timeval *timeout);
179
194static inline fd_set *
196{
197 return f->fdset;
198}
199
208static inline int
210{
211 return f->maxfd;
212}
213
214#endif /* RBIMPL_INTERN_SELECT_LARGESIZE_H */
Tweaking visibility of C variables/functions.
#define RBIMPL_SYMBOL_EXPORT_END()
Counterpart of RBIMPL_SYMBOL_EXPORT_BEGIN.
Definition dllexport.h:74
#define RBIMPL_SYMBOL_EXPORT_BEGIN()
Shortcut macro equivalent to RUBY_SYMBOL_EXPORT_BEGIN extern "C" {.
Definition dllexport.h:65
static int rb_fd_max(const rb_fdset_t *f)
It seems this function has no use.
Definition largesize.h:209
void rb_fd_copy(rb_fdset_t *dst, const fd_set *src, int max)
Destructively overwrites an fdset with another.
void rb_fd_dup(rb_fdset_t *dst, const rb_fdset_t *src)
Identical to rb_fd_copy(), except it copies unlimited number of file descriptors.
void rb_fd_term(rb_fdset_t *f)
Destroys the rb_fdset_t, releasing any memory and resources it used.
static fd_set * rb_fd_ptr(const rb_fdset_t *f)
Raw pointer to fd_set.
Definition largesize.h:195
Defines RBIMPL_ATTR_NONNULL.
#define RBIMPL_ATTR_NONNULL(list)
Wraps (or simulates) __attribute__((nonnull))
Definition nonnull.h:30
#define rb_fd_isset
Queries if the given fd is in the rb_fdset_t.
Definition posix.h:60
#define rb_fd_select
Waits for multiple file descriptors at once.
Definition posix.h:66
#define rb_fd_init
Initialises the :given :rb_fdset_t.
Definition posix.h:63
#define rb_fd_set
Sets the given fd to the rb_fdset_t.
Definition posix.h:54
#define rb_fd_zero
Clears the given rb_fdset_t.
Definition posix.h:51
#define rb_fd_clr
Unsets the given fd from the rb_fdset_t.
Definition posix.h:57
#define inline
Old Visual Studio versions do not support the inline keyword, so we need to define it to be __inline.
Definition defines.h:91
Defines RBIMPL_ATTR_PURE.
#define RBIMPL_ATTR_PURE()
Wraps (or simulates) __attribute__((pure))
Definition pure.h:33
The data structure which wraps the fd_set bitmap used by select(2).
Definition largesize.h:71
int maxfd
Maximum allowed number of FDs.
Definition largesize.h:72
fd_set * fdset
File descriptors buffer.
Definition largesize.h:73