Ruby 3.0.5p211 (2022-11-24 revision ba5cf0f7c52d4d35cc6a173c89eda98ceffa2dcf)
Data Structures | Functions
largesize.h File Reference

Public APIs to provide rb_fd_select(). More...

#include "ruby/internal/attr/nonnull.h"
#include "ruby/internal/attr/pure.h"
#include "ruby/internal/dllexport.h"

Go to the source code of this file.

Data Structures

struct  rb_fdset_t
 

Functions

void rb_fd_init (rb_fdset_t *)
 
void rb_fd_term (rb_fdset_t *)
 
void rb_fd_zero (rb_fdset_t *)
 
void rb_fd_set (int, rb_fdset_t *)
 
void rb_fd_clr (int, rb_fdset_t *)
 
int rb_fd_isset (int, const rb_fdset_t *)
 
void rb_fd_copy (rb_fdset_t *, const fd_set *, int)
 
void rb_fd_dup (rb_fdset_t *dst, const rb_fdset_t *src)
 
int rb_fd_select (int, rb_fdset_t *, rb_fdset_t *, rb_fdset_t *, struct timeval *)
 

Detailed Description

Public APIs to provide rb_fd_select().

Author
Ruby developers ruby-.nosp@m.core.nosp@m.@ruby.nosp@m.-lan.nosp@m.g.org
Warning
Symbols prefixed with either RBIMPL or rbimpl are implementation details. Don't take them as canon. They could rapidly appear then vanish. The name (path) of this header file is also an implementation detail. Do not expect it to persist at the place it is now. Developers are free to move it anywhere anytime at will.
Note
To ruby-core: remember that this header can be possibly recursively included from extension libraries written in C++. Do not expect for instance __VA_ARGS__ is always available. We assume C99 for ruby itself but we don't assume languages of extension libraries. They could be written in C++98.

Several Unix platforms support file descriptors bigger than FD_SETSIZE in select(2) system call.

When fd_set is not big enough to hold big file descriptors, it should be allocated dynamically. Note that this assumes fd_set is structured as bitmap.

rb_fd_init allocates the memory. rb_fd_term frees the memory. rb_fd_set may re-allocate bitmap.

So rb_fd_set doesn't reject file descriptors bigger than FD_SETSIZE.

Definition in file largesize.h.

Function Documentation

◆ rb_fd_clr()

void rb_fd_clr ( int  ,
rb_fdset_t  
)

◆ rb_fd_copy()

void rb_fd_copy ( rb_fdset_t ,
const fd_set *  ,
int   
)

◆ rb_fd_dup()

void rb_fd_dup ( rb_fdset_t dst,
const rb_fdset_t src 
)

◆ rb_fd_init()

void rb_fd_init ( rb_fdset_t )

◆ rb_fd_isset()

int rb_fd_isset ( int  ,
const rb_fdset_t  
)

◆ rb_fd_select()

int rb_fd_select ( int  ,
rb_fdset_t ,
rb_fdset_t ,
rb_fdset_t ,
struct timeval  
)

References f.

◆ rb_fd_set()

void rb_fd_set ( int  ,
rb_fdset_t  
)

◆ rb_fd_term()

void rb_fd_term ( rb_fdset_t )

◆ rb_fd_zero()

void rb_fd_zero ( rb_fdset_t )