WHvGetPartitionCounters

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

HRESULT WHvGetPartitionCounters(
    WHV_PARTITION_HANDLE Partition,
    WHV_PARTITION_COUNTER_SET CounterSet,
    void* Buffer,
    DWORD BufferSizeInBytes,
    DWORD* BytesWritten   // optional
);

<DllImport("WinHvPlatform.dll", ExactSpelling:=True)>
Public Shared Function WHvGetPartitionCounters(
    Partition As IntPtr,   ' WHV_PARTITION_HANDLE
    CounterSet As Integer,   ' WHV_PARTITION_COUNTER_SET
    Buffer As IntPtr,   ' void* out
    BufferSizeInBytes As UInteger,   ' DWORD
    BytesWritten As IntPtr   ' DWORD* optional, out
) As Integer
End Function

' Partition : WHV_PARTITION_HANDLE
' CounterSet : WHV_PARTITION_COUNTER_SET
' Buffer : void* out
' BufferSizeInBytes : DWORD
' BytesWritten : DWORD* optional, out
Declare PtrSafe Function WHvGetPartitionCounters Lib "winhvplatform" ( _
    ByVal Partition As LongPtr, _
    ByVal CounterSet As Long, _
    ByVal Buffer As LongPtr, _
    ByVal BufferSizeInBytes As Long, _
    ByVal BytesWritten As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WHvGetPartitionCounters = ctypes.windll.winhvplatform.WHvGetPartitionCounters
WHvGetPartitionCounters.restype = ctypes.c_int
WHvGetPartitionCounters.argtypes = [
    ctypes.c_ssize_t,  # Partition : WHV_PARTITION_HANDLE
    ctypes.c_int,  # CounterSet : WHV_PARTITION_COUNTER_SET
    ctypes.POINTER(None),  # Buffer : void* out
    wintypes.DWORD,  # BufferSizeInBytes : DWORD
    ctypes.POINTER(wintypes.DWORD),  # BytesWritten : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WinHvPlatform.dll')
WHvGetPartitionCounters = Fiddle::Function.new(
  lib['WHvGetPartitionCounters'],
  [
    Fiddle::TYPE_INTPTR_T,  # Partition : WHV_PARTITION_HANDLE
    Fiddle::TYPE_INT,  # CounterSet : WHV_PARTITION_COUNTER_SET
    Fiddle::TYPE_VOIDP,  # Buffer : void* out
    -Fiddle::TYPE_INT,  # BufferSizeInBytes : DWORD
    Fiddle::TYPE_VOIDP,  # BytesWritten : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "winhvplatform")]
extern "system" {
    fn WHvGetPartitionCounters(
        Partition: isize,  // WHV_PARTITION_HANDLE
        CounterSet: i32,  // WHV_PARTITION_COUNTER_SET
        Buffer: *mut (),  // void* out
        BufferSizeInBytes: u32,  // DWORD
        BytesWritten: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WinHvPlatform.dll")]
public static extern int WHvGetPartitionCounters(IntPtr Partition, int CounterSet, IntPtr Buffer, uint BufferSizeInBytes, IntPtr BytesWritten);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WinHvPlatform_WHvGetPartitionCounters' -Namespace Win32 -PassThru
# $api::WHvGetPartitionCounters(Partition, CounterSet, Buffer, BufferSizeInBytes, BytesWritten)

#uselib "WinHvPlatform.dll"
#func global WHvGetPartitionCounters "WHvGetPartitionCounters" sptr, sptr, sptr, sptr, sptr
; WHvGetPartitionCounters Partition, CounterSet, Buffer, BufferSizeInBytes, varptr(BytesWritten)   ; 戻り値は stat
; Partition : WHV_PARTITION_HANDLE -> "sptr"
; CounterSet : WHV_PARTITION_COUNTER_SET -> "sptr"
; Buffer : void* out -> "sptr"
; BufferSizeInBytes : DWORD -> "sptr"
; BytesWritten : DWORD* optional, out -> "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 (
	winhvplatform = windows.NewLazySystemDLL("WinHvPlatform.dll")
	procWHvGetPartitionCounters = winhvplatform.NewProc("WHvGetPartitionCounters")
)

// Partition (WHV_PARTITION_HANDLE), CounterSet (WHV_PARTITION_COUNTER_SET), Buffer (void* out), BufferSizeInBytes (DWORD), BytesWritten (DWORD* optional, out)
r1, _, err := procWHvGetPartitionCounters.Call(
	uintptr(Partition),
	uintptr(CounterSet),
	uintptr(Buffer),
	uintptr(BufferSizeInBytes),
	uintptr(BytesWritten),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WHvGetPartitionCounters(
  Partition: NativeInt;   // WHV_PARTITION_HANDLE
  CounterSet: Integer;   // WHV_PARTITION_COUNTER_SET
  Buffer: Pointer;   // void* out
  BufferSizeInBytes: DWORD;   // DWORD
  BytesWritten: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'WinHvPlatform.dll' name 'WHvGetPartitionCounters';

result := DllCall("WinHvPlatform\WHvGetPartitionCounters"
    , "Ptr", Partition   ; WHV_PARTITION_HANDLE
    , "Int", CounterSet   ; WHV_PARTITION_COUNTER_SET
    , "Ptr", Buffer   ; void* out
    , "UInt", BufferSizeInBytes   ; DWORD
    , "Ptr", BytesWritten   ; DWORD* optional, out
    , "Int")   ; return: HRESULT

●WHvGetPartitionCounters(Partition, CounterSet, Buffer, BufferSizeInBytes, BytesWritten) = DLL("WinHvPlatform.dll", "int WHvGetPartitionCounters(int, int, void*, dword, void*)")
# 呼び出し: WHvGetPartitionCounters(Partition, CounterSet, Buffer, BufferSizeInBytes, BytesWritten)
# Partition : WHV_PARTITION_HANDLE -> "int"
# CounterSet : WHV_PARTITION_COUNTER_SET -> "int"
# Buffer : void* out -> "void*"
# BufferSizeInBytes : DWORD -> "dword"
# BytesWritten : DWORD* optional, out -> "void*"
# 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 "winhvplatform" fn WHvGetPartitionCounters(
    Partition: isize, // WHV_PARTITION_HANDLE
    CounterSet: i32, // WHV_PARTITION_COUNTER_SET
    Buffer: ?*anyopaque, // void* out
    BufferSizeInBytes: u32, // DWORD
    BytesWritten: [*c]u32 // DWORD* optional, out
) callconv(std.os.windows.WINAPI) i32;

proc WHvGetPartitionCounters(
    Partition: int,  # WHV_PARTITION_HANDLE
    CounterSet: int32,  # WHV_PARTITION_COUNTER_SET
    Buffer: pointer,  # void* out
    BufferSizeInBytes: uint32,  # DWORD
    BytesWritten: ptr uint32  # DWORD* optional, out
): int32 {.importc: "WHvGetPartitionCounters", stdcall, dynlib: "WinHvPlatform.dll".}

pragma(lib, "winhvplatform");
extern(Windows)
int WHvGetPartitionCounters(
    ptrdiff_t Partition,   // WHV_PARTITION_HANDLE
    int CounterSet,   // WHV_PARTITION_COUNTER_SET
    void* Buffer,   // void* out
    uint BufferSizeInBytes,   // DWORD
    uint* BytesWritten   // DWORD* optional, out
);

ccall((:WHvGetPartitionCounters, "WinHvPlatform.dll"), stdcall, Int32,
      (Int, Int32, Ptr{Cvoid}, UInt32, Ptr{UInt32}),
      Partition, CounterSet, Buffer, BufferSizeInBytes, BytesWritten)
# Partition : WHV_PARTITION_HANDLE -> Int
# CounterSet : WHV_PARTITION_COUNTER_SET -> Int32
# Buffer : void* out -> Ptr{Cvoid}
# BufferSizeInBytes : DWORD -> UInt32
# BytesWritten : DWORD* optional, out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t WHvGetPartitionCounters(
    intptr_t Partition,
    int32_t CounterSet,
    void* Buffer,
    uint32_t BufferSizeInBytes,
    uint32_t* BytesWritten);
]]
local winhvplatform = ffi.load("winhvplatform")
-- winhvplatform.WHvGetPartitionCounters(Partition, CounterSet, Buffer, BufferSizeInBytes, BytesWritten)
-- Partition : WHV_PARTITION_HANDLE
-- CounterSet : WHV_PARTITION_COUNTER_SET
-- Buffer : void* out
-- BufferSizeInBytes : DWORD
-- BytesWritten : DWORD* optional, out
-- 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('WinHvPlatform.dll');
const WHvGetPartitionCounters = lib.func('__stdcall', 'WHvGetPartitionCounters', 'int32_t', ['intptr_t', 'int32_t', 'void *', 'uint32_t', 'uint32_t *']);
// WHvGetPartitionCounters(Partition, CounterSet, Buffer, BufferSizeInBytes, BytesWritten)
// Partition : WHV_PARTITION_HANDLE -> 'intptr_t'
// CounterSet : WHV_PARTITION_COUNTER_SET -> 'int32_t'
// Buffer : void* out -> 'void *'
// BufferSizeInBytes : DWORD -> 'uint32_t'
// BytesWritten : DWORD* optional, out -> '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("WinHvPlatform.dll", {
  WHvGetPartitionCounters: { parameters: ["isize", "i32", "pointer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.WHvGetPartitionCounters(Partition, CounterSet, Buffer, BufferSizeInBytes, BytesWritten)
// Partition : WHV_PARTITION_HANDLE -> "isize"
// CounterSet : WHV_PARTITION_COUNTER_SET -> "i32"
// Buffer : void* out -> "pointer"
// BufferSizeInBytes : DWORD -> "u32"
// BytesWritten : DWORD* optional, out -> "pointer"
// 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 WHvGetPartitionCounters(
    intptr_t Partition,
    int32_t CounterSet,
    void* Buffer,
    uint32_t BufferSizeInBytes,
    uint32_t* BytesWritten);
C, "WinHvPlatform.dll");
// $ffi->WHvGetPartitionCounters(Partition, CounterSet, Buffer, BufferSizeInBytes, BytesWritten);
// Partition : WHV_PARTITION_HANDLE
// CounterSet : WHV_PARTITION_COUNTER_SET
// Buffer : void* out
// BufferSizeInBytes : DWORD
// BytesWritten : DWORD* optional, out
// 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 Winhvplatform extends StdCallLibrary {
    Winhvplatform INSTANCE = Native.load("winhvplatform", Winhvplatform.class);
    int WHvGetPartitionCounters(
        long Partition,   // WHV_PARTITION_HANDLE
        int CounterSet,   // WHV_PARTITION_COUNTER_SET
        Pointer Buffer,   // void* out
        int BufferSizeInBytes,   // DWORD
        IntByReference BytesWritten   // DWORD* optional, out
    );
}

@[Link("winhvplatform")]
lib LibWinHvPlatform
  fun WHvGetPartitionCounters = WHvGetPartitionCounters(
    Partition : LibC::SSizeT,   # WHV_PARTITION_HANDLE
    CounterSet : Int32,   # WHV_PARTITION_COUNTER_SET
    Buffer : Void*,   # void* out
    BufferSizeInBytes : UInt32,   # DWORD
    BytesWritten : UInt32*   # DWORD* optional, out
  ) : 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 WHvGetPartitionCountersNative = Int32 Function(IntPtr, Int32, Pointer<Void>, Uint32, Pointer<Uint32>);
typedef WHvGetPartitionCountersDart = int Function(int, int, Pointer<Void>, int, Pointer<Uint32>);
final WHvGetPartitionCounters = DynamicLibrary.open('WinHvPlatform.dll')
    .lookupFunction<WHvGetPartitionCountersNative, WHvGetPartitionCountersDart>('WHvGetPartitionCounters');
// Partition : WHV_PARTITION_HANDLE -> IntPtr
// CounterSet : WHV_PARTITION_COUNTER_SET -> Int32
// Buffer : void* out -> Pointer<Void>
// BufferSizeInBytes : DWORD -> Uint32
// BytesWritten : DWORD* optional, out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WHvGetPartitionCounters(
  Partition: NativeInt;   // WHV_PARTITION_HANDLE
  CounterSet: Integer;   // WHV_PARTITION_COUNTER_SET
  Buffer: Pointer;   // void* out
  BufferSizeInBytes: DWORD;   // DWORD
  BytesWritten: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'WinHvPlatform.dll' name 'WHvGetPartitionCounters';

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

foreign import stdcall safe "WHvGetPartitionCounters"
  c_WHvGetPartitionCounters :: CIntPtr -> Int32 -> Ptr () -> Word32 -> Ptr Word32 -> IO Int32
-- Partition : WHV_PARTITION_HANDLE -> CIntPtr
-- CounterSet : WHV_PARTITION_COUNTER_SET -> Int32
-- Buffer : void* out -> Ptr ()
-- BufferSizeInBytes : DWORD -> Word32
-- BytesWritten : DWORD* optional, out -> Ptr 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 whvgetpartitioncounters =
  foreign "WHvGetPartitionCounters"
    (intptr_t @-> int32_t @-> (ptr void) @-> uint32_t @-> (ptr uint32_t) @-> returning int32_t)
(* Partition : WHV_PARTITION_HANDLE -> intptr_t *)
(* CounterSet : WHV_PARTITION_COUNTER_SET -> int32_t *)
(* Buffer : void* out -> (ptr void) *)
(* BufferSizeInBytes : DWORD -> uint32_t *)
(* BytesWritten : DWORD* optional, out -> (ptr 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 winhvplatform (t "WinHvPlatform.dll"))
(cffi:use-foreign-library winhvplatform)

(cffi:defcfun ("WHvGetPartitionCounters" whv-get-partition-counters :convention :stdcall) :int32
  (partition :int64)   ; WHV_PARTITION_HANDLE
  (counter-set :int32)   ; WHV_PARTITION_COUNTER_SET
  (buffer :pointer)   ; void* out
  (buffer-size-in-bytes :uint32)   ; DWORD
  (bytes-written :pointer))   ; DWORD* optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WHvGetPartitionCounters = Win32::API::More->new('WinHvPlatform',
    'int WHvGetPartitionCounters(LPARAM Partition, int CounterSet, LPVOID Buffer, DWORD BufferSizeInBytes, LPVOID BytesWritten)');
# my $ret = $WHvGetPartitionCounters->Call($Partition, $CounterSet, $Buffer, $BufferSizeInBytes, $BytesWritten);
# Partition : WHV_PARTITION_HANDLE -> LPARAM
# CounterSet : WHV_PARTITION_COUNTER_SET -> int
# Buffer : void* out -> LPVOID
# BufferSizeInBytes : DWORD -> DWORD
# BytesWritten : DWORD* optional, out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。