SetThreadpoolThreadMaximum

// KERNEL32.dll
#include <windows.h>

void SetThreadpoolThreadMaximum(
    PTP_POOL ptpp,
    DWORD cthrdMost
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Sub SetThreadpoolThreadMaximum(
    ptpp As IntPtr,   ' PTP_POOL
    cthrdMost As UInteger   ' DWORD
)
End Sub

' ptpp : PTP_POOL
' cthrdMost : DWORD
Declare PtrSafe Sub SetThreadpoolThreadMaximum Lib "kernel32" ( _
    ByVal ptpp As LongPtr, _
    ByVal cthrdMost As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetThreadpoolThreadMaximum = ctypes.windll.kernel32.SetThreadpoolThreadMaximum
SetThreadpoolThreadMaximum.restype = None
SetThreadpoolThreadMaximum.argtypes = [
    ctypes.c_ssize_t,  # ptpp : PTP_POOL
    wintypes.DWORD,  # cthrdMost : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
SetThreadpoolThreadMaximum = Fiddle::Function.new(
  lib['SetThreadpoolThreadMaximum'],
  [
    Fiddle::TYPE_INTPTR_T,  # ptpp : PTP_POOL
    -Fiddle::TYPE_INT,  # cthrdMost : DWORD
  ],
  Fiddle::TYPE_VOID)

#[link(name = "kernel32")]
extern "system" {
    fn SetThreadpoolThreadMaximum(
        ptpp: isize,  // PTP_POOL
        cthrdMost: u32  // DWORD
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern void SetThreadpoolThreadMaximum(IntPtr ptpp, uint cthrdMost);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_SetThreadpoolThreadMaximum' -Namespace Win32 -PassThru
# $api::SetThreadpoolThreadMaximum(ptpp, cthrdMost)

#uselib "KERNEL32.dll"
#func global SetThreadpoolThreadMaximum "SetThreadpoolThreadMaximum" sptr, sptr
; SetThreadpoolThreadMaximum ptpp, cthrdMost
; ptpp : PTP_POOL -> "sptr"
; cthrdMost : DWORD -> "sptr"

#uselib "KERNEL32.dll"
#func global SetThreadpoolThreadMaximum "SetThreadpoolThreadMaximum" sptr, int
; SetThreadpoolThreadMaximum ptpp, cthrdMost
; ptpp : PTP_POOL -> "sptr"
; cthrdMost : DWORD -> "int"

; void SetThreadpoolThreadMaximum(PTP_POOL ptpp, DWORD cthrdMost)
#uselib "KERNEL32.dll"
#func global SetThreadpoolThreadMaximum "SetThreadpoolThreadMaximum" intptr, int
; SetThreadpoolThreadMaximum ptpp, cthrdMost
; ptpp : PTP_POOL -> "intptr"
; cthrdMost : DWORD -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procSetThreadpoolThreadMaximum = kernel32.NewProc("SetThreadpoolThreadMaximum")
)

// ptpp (PTP_POOL), cthrdMost (DWORD)
r1, _, err := procSetThreadpoolThreadMaximum.Call(
	uintptr(ptpp),
	uintptr(cthrdMost),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure SetThreadpoolThreadMaximum(
  ptpp: NativeInt;   // PTP_POOL
  cthrdMost: DWORD   // DWORD
); stdcall;
  external 'KERNEL32.dll' name 'SetThreadpoolThreadMaximum';

result := DllCall("KERNEL32\SetThreadpoolThreadMaximum"
    , "Ptr", ptpp   ; PTP_POOL
    , "UInt", cthrdMost   ; DWORD
    , "Int")   ; return: void

●SetThreadpoolThreadMaximum(ptpp, cthrdMost) = DLL("KERNEL32.dll", "int SetThreadpoolThreadMaximum(int, dword)")
# 呼び出し: SetThreadpoolThreadMaximum(ptpp, cthrdMost)
# ptpp : PTP_POOL -> "int"
# cthrdMost : DWORD -> "dword"
# 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 "kernel32" fn SetThreadpoolThreadMaximum(
    ptpp: isize, // PTP_POOL
    cthrdMost: u32 // DWORD
) callconv(std.os.windows.WINAPI) void;

proc SetThreadpoolThreadMaximum(
    ptpp: int,  # PTP_POOL
    cthrdMost: uint32  # DWORD
) {.importc: "SetThreadpoolThreadMaximum", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
void SetThreadpoolThreadMaximum(
    ptrdiff_t ptpp,   // PTP_POOL
    uint cthrdMost   // DWORD
);

ccall((:SetThreadpoolThreadMaximum, "KERNEL32.dll"), stdcall, Cvoid,
      (Int, UInt32),
      ptpp, cthrdMost)
# ptpp : PTP_POOL -> Int
# cthrdMost : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void SetThreadpoolThreadMaximum(
    intptr_t ptpp,
    uint32_t cthrdMost);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.SetThreadpoolThreadMaximum(ptpp, cthrdMost)
-- ptpp : PTP_POOL
-- cthrdMost : DWORD
-- 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('KERNEL32.dll');
const SetThreadpoolThreadMaximum = lib.func('__stdcall', 'SetThreadpoolThreadMaximum', 'void', ['intptr_t', 'uint32_t']);
// SetThreadpoolThreadMaximum(ptpp, cthrdMost)
// ptpp : PTP_POOL -> 'intptr_t'
// cthrdMost : DWORD -> 'uint32_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("KERNEL32.dll", {
  SetThreadpoolThreadMaximum: { parameters: ["isize", "u32"], result: "void" },
});
// lib.symbols.SetThreadpoolThreadMaximum(ptpp, cthrdMost)
// ptpp : PTP_POOL -> "isize"
// cthrdMost : DWORD -> "u32"
// 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
void SetThreadpoolThreadMaximum(
    intptr_t ptpp,
    uint32_t cthrdMost);
C, "KERNEL32.dll");
// $ffi->SetThreadpoolThreadMaximum(ptpp, cthrdMost);
// ptpp : PTP_POOL
// cthrdMost : DWORD
// 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 Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class);
    void SetThreadpoolThreadMaximum(
        long ptpp,   // PTP_POOL
        int cthrdMost   // DWORD
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun SetThreadpoolThreadMaximum = SetThreadpoolThreadMaximum(
    ptpp : LibC::SSizeT,   # PTP_POOL
    cthrdMost : UInt32   # DWORD
  ) : Void
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 SetThreadpoolThreadMaximumNative = Void Function(IntPtr, Uint32);
typedef SetThreadpoolThreadMaximumDart = void Function(int, int);
final SetThreadpoolThreadMaximum = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<SetThreadpoolThreadMaximumNative, SetThreadpoolThreadMaximumDart>('SetThreadpoolThreadMaximum');
// ptpp : PTP_POOL -> IntPtr
// cthrdMost : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure SetThreadpoolThreadMaximum(
  ptpp: NativeInt;   // PTP_POOL
  cthrdMost: DWORD   // DWORD
); stdcall;
  external 'KERNEL32.dll' name 'SetThreadpoolThreadMaximum';

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

foreign import stdcall safe "SetThreadpoolThreadMaximum"
  c_SetThreadpoolThreadMaximum :: CIntPtr -> Word32 -> IO ()
-- ptpp : PTP_POOL -> CIntPtr
-- cthrdMost : DWORD -> Word32
-- 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 setthreadpoolthreadmaximum =
  foreign "SetThreadpoolThreadMaximum"
    (intptr_t @-> uint32_t @-> returning void)
(* ptpp : PTP_POOL -> intptr_t *)
(* cthrdMost : DWORD -> uint32_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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("SetThreadpoolThreadMaximum" set-threadpool-thread-maximum :convention :stdcall) :void
  (ptpp :int64)   ; PTP_POOL
  (cthrd-most :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SetThreadpoolThreadMaximum = Win32::API::More->new('KERNEL32',
    'void SetThreadpoolThreadMaximum(LPARAM ptpp, DWORD cthrdMost)');
# my $ret = $SetThreadpoolThreadMaximum->Call($ptpp, $cthrdMost);
# ptpp : PTP_POOL -> LPARAM
# cthrdMost : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。