WSAPoll

// WS2_32.dll
#include <windows.h>

INT WSAPoll(
    WSAPOLLFD* fdArray,
    DWORD fds,
    INT timeout
);

<DllImport("WS2_32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSAPoll(
    fdArray As IntPtr,   ' WSAPOLLFD* in/out
    fds As UInteger,   ' DWORD
    timeout As Integer   ' INT
) As Integer
End Function

' fdArray : WSAPOLLFD* in/out
' fds : DWORD
' timeout : INT
Declare PtrSafe Function WSAPoll Lib "ws2_32" ( _
    ByVal fdArray As LongPtr, _
    ByVal fds As Long, _
    ByVal timeout As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WSAPoll = ctypes.windll.ws2_32.WSAPoll
WSAPoll.restype = ctypes.c_int
WSAPoll.argtypes = [
    ctypes.c_void_p,  # fdArray : WSAPOLLFD* in/out
    wintypes.DWORD,  # fds : DWORD
    ctypes.c_int,  # timeout : INT
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSAPoll = Fiddle::Function.new(
  lib['WSAPoll'],
  [
    Fiddle::TYPE_VOIDP,  # fdArray : WSAPOLLFD* in/out
    -Fiddle::TYPE_INT,  # fds : DWORD
    Fiddle::TYPE_INT,  # timeout : INT
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn WSAPoll(
        fdArray: *mut WSAPOLLFD,  // WSAPOLLFD* in/out
        fds: u32,  // DWORD
        timeout: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll", SetLastError = true)]
public static extern int WSAPoll(IntPtr fdArray, uint fds, int timeout);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSAPoll' -Namespace Win32 -PassThru
# $api::WSAPoll(fdArray, fds, timeout)

#uselib "WS2_32.dll"
#func global WSAPoll "WSAPoll" sptr, sptr, sptr
; WSAPoll varptr(fdArray), fds, timeout   ; 戻り値は stat
; fdArray : WSAPOLLFD* in/out -> "sptr"
; fds : DWORD -> "sptr"
; timeout : INT -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	ws2_32 = windows.NewLazySystemDLL("WS2_32.dll")
	procWSAPoll = ws2_32.NewProc("WSAPoll")
)

// fdArray (WSAPOLLFD* in/out), fds (DWORD), timeout (INT)
r1, _, err := procWSAPoll.Call(
	uintptr(fdArray),
	uintptr(fds),
	uintptr(timeout),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSAPoll(
  fdArray: Pointer;   // WSAPOLLFD* in/out
  fds: DWORD;   // DWORD
  timeout: Integer   // INT
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAPoll';

result := DllCall("WS2_32\WSAPoll"
    , "Ptr", fdArray   ; WSAPOLLFD* in/out
    , "UInt", fds   ; DWORD
    , "Int", timeout   ; INT
    , "Int")   ; return: INT

●WSAPoll(fdArray, fds, timeout) = DLL("WS2_32.dll", "int WSAPoll(void*, dword, int)")
# 呼び出し: WSAPoll(fdArray, fds, timeout)
# fdArray : WSAPOLLFD* in/out -> "void*"
# fds : DWORD -> "dword"
# timeout : INT -> "int"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。

const std = @import("std");

extern "ws2_32" fn WSAPoll(
    fdArray: [*c]WSAPOLLFD, // WSAPOLLFD* in/out
    fds: u32, // DWORD
    timeout: i32 // INT
) callconv(std.os.windows.WINAPI) i32;

proc WSAPoll(
    fdArray: ptr WSAPOLLFD,  # WSAPOLLFD* in/out
    fds: uint32,  # DWORD
    timeout: int32  # INT
): int32 {.importc: "WSAPoll", stdcall, dynlib: "WS2_32.dll".}

pragma(lib, "ws2_32");
extern(Windows)
int WSAPoll(
    WSAPOLLFD* fdArray,   // WSAPOLLFD* in/out
    uint fds,   // DWORD
    int timeout   // INT
);

ccall((:WSAPoll, "WS2_32.dll"), stdcall, Int32,
      (Ptr{WSAPOLLFD}, UInt32, Int32),
      fdArray, fds, timeout)
# fdArray : WSAPOLLFD* in/out -> Ptr{WSAPOLLFD}
# fds : DWORD -> UInt32
# timeout : INT -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t WSAPoll(
    void* fdArray,
    uint32_t fds,
    int32_t timeout);
]]
local ws2_32 = ffi.load("ws2_32")
-- ws2_32.WSAPoll(fdArray, fds, timeout)
-- fdArray : WSAPOLLFD* in/out
-- fds : DWORD
-- timeout : INT
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('WS2_32.dll');
const WSAPoll = lib.func('__stdcall', 'WSAPoll', 'int32_t', ['void *', 'uint32_t', 'int32_t']);
// WSAPoll(fdArray, fds, timeout)
// fdArray : WSAPOLLFD* in/out -> 'void *'
// fds : DWORD -> 'uint32_t'
// timeout : INT -> 'int32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("WS2_32.dll", {
  WSAPoll: { parameters: ["pointer", "u32", "i32"], result: "i32" },
});
// lib.symbols.WSAPoll(fdArray, fds, timeout)
// fdArray : WSAPOLLFD* in/out -> "pointer"
// fds : DWORD -> "u32"
// timeout : INT -> "i32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t WSAPoll(
    void* fdArray,
    uint32_t fds,
    int32_t timeout);
C, "WS2_32.dll");
// $ffi->WSAPoll(fdArray, fds, timeout);
// fdArray : WSAPOLLFD* in/out
// fds : DWORD
// timeout : INT
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Ws2_32 extends StdCallLibrary {
    Ws2_32 INSTANCE = Native.load("ws2_32", Ws2_32.class);
    int WSAPoll(
        Pointer fdArray,   // WSAPOLLFD* in/out
        int fds,   // DWORD
        int timeout   // INT
    );
}

@[Link("ws2_32")]
lib LibWS2_32
  fun WSAPoll = WSAPoll(
    fdArray : WSAPOLLFD*,   # WSAPOLLFD* in/out
    fds : UInt32,   # DWORD
    timeout : Int32   # INT
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef WSAPollNative = Int32 Function(Pointer<Void>, Uint32, Int32);
typedef WSAPollDart = int Function(Pointer<Void>, int, int);
final WSAPoll = DynamicLibrary.open('WS2_32.dll')
    .lookupFunction<WSAPollNative, WSAPollDart>('WSAPoll');
// fdArray : WSAPOLLFD* in/out -> Pointer<Void>
// fds : DWORD -> Uint32
// timeout : INT -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WSAPoll(
  fdArray: Pointer;   // WSAPOLLFD* in/out
  fds: DWORD;   // DWORD
  timeout: Integer   // INT
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAPoll';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "WSAPoll"
  c_WSAPoll :: Ptr () -> Word32 -> Int32 -> IO Int32
-- fdArray : WSAPOLLFD* in/out -> Ptr ()
-- fds : DWORD -> Word32
-- timeout : INT -> Int32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let wsapoll =
  foreign "WSAPoll"
    ((ptr void) @-> uint32_t @-> int32_t @-> returning int32_t)
(* fdArray : WSAPOLLFD* in/out -> (ptr void) *)
(* fds : DWORD -> uint32_t *)
(* timeout : INT -> int32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library ws2_32 (t "WS2_32.dll"))
(cffi:use-foreign-library ws2_32)

(cffi:defcfun ("WSAPoll" wsapoll :convention :stdcall) :int32
  (fd-array :pointer)   ; WSAPOLLFD* in/out
  (fds :uint32)   ; DWORD
  (timeout :int32))   ; INT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WSAPoll = Win32::API::More->new('WS2_32',
    'int WSAPoll(LPVOID fdArray, DWORD fds, int timeout)');
# my $ret = $WSAPoll->Call($fdArray, $fds, $timeout);
# fdArray : WSAPOLLFD* in/out -> LPVOID
# fds : DWORD -> DWORD
# timeout : INT -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。