JetGetThreadStats

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

INT JetGetThreadStats(
    void* pvResult,
    DWORD cbMax
);

<DllImport("ESENT.dll", ExactSpelling:=True)>
Public Shared Function JetGetThreadStats(
    pvResult As IntPtr,   ' void* out
    cbMax As UInteger   ' DWORD
) As Integer
End Function

' pvResult : void* out
' cbMax : DWORD
Declare PtrSafe Function JetGetThreadStats Lib "esent" ( _
    ByVal pvResult As LongPtr, _
    ByVal cbMax 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

JetGetThreadStats = ctypes.windll.esent.JetGetThreadStats
JetGetThreadStats.restype = ctypes.c_int
JetGetThreadStats.argtypes = [
    ctypes.POINTER(None),  # pvResult : void* out
    wintypes.DWORD,  # cbMax : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetGetThreadStats = Fiddle::Function.new(
  lib['JetGetThreadStats'],
  [
    Fiddle::TYPE_VOIDP,  # pvResult : void* out
    -Fiddle::TYPE_INT,  # cbMax : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "esent")]
extern "system" {
    fn JetGetThreadStats(
        pvResult: *mut (),  // void* out
        cbMax: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll")]
public static extern int JetGetThreadStats(IntPtr pvResult, uint cbMax);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetGetThreadStats' -Namespace Win32 -PassThru
# $api::JetGetThreadStats(pvResult, cbMax)

#uselib "ESENT.dll"
#func global JetGetThreadStats "JetGetThreadStats" sptr, sptr
; JetGetThreadStats pvResult, cbMax   ; 戻り値は stat
; pvResult : void* out -> "sptr"
; cbMax : DWORD -> "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。

#uselib "ESENT.dll"
#cfunc global JetGetThreadStats "JetGetThreadStats" sptr, int
; res = JetGetThreadStats(pvResult, cbMax)
; pvResult : void* out -> "sptr"
; cbMax : DWORD -> "int"

; INT JetGetThreadStats(void* pvResult, DWORD cbMax)
#uselib "ESENT.dll"
#cfunc global JetGetThreadStats "JetGetThreadStats" intptr, int
; res = JetGetThreadStats(pvResult, cbMax)
; pvResult : void* out -> "intptr"
; cbMax : DWORD -> "int"

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

var (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetGetThreadStats = esent.NewProc("JetGetThreadStats")
)

// pvResult (void* out), cbMax (DWORD)
r1, _, err := procJetGetThreadStats.Call(
	uintptr(pvResult),
	uintptr(cbMax),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetGetThreadStats(
  pvResult: Pointer;   // void* out
  cbMax: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetGetThreadStats';

result := DllCall("ESENT\JetGetThreadStats"
    , "Ptr", pvResult   ; void* out
    , "UInt", cbMax   ; DWORD
    , "Int")   ; return: INT

●JetGetThreadStats(pvResult, cbMax) = DLL("ESENT.dll", "int JetGetThreadStats(void*, dword)")
# 呼び出し: JetGetThreadStats(pvResult, cbMax)
# pvResult : void* out -> "void*"
# cbMax : 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 "esent" fn JetGetThreadStats(
    pvResult: ?*anyopaque, // void* out
    cbMax: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc JetGetThreadStats(
    pvResult: pointer,  # void* out
    cbMax: uint32  # DWORD
): int32 {.importc: "JetGetThreadStats", stdcall, dynlib: "ESENT.dll".}

pragma(lib, "esent");
extern(Windows)
int JetGetThreadStats(
    void* pvResult,   // void* out
    uint cbMax   // DWORD
);

ccall((:JetGetThreadStats, "ESENT.dll"), stdcall, Int32,
      (Ptr{Cvoid}, UInt32),
      pvResult, cbMax)
# pvResult : void* out -> Ptr{Cvoid}
# cbMax : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t JetGetThreadStats(
    void* pvResult,
    uint32_t cbMax);
]]
local esent = ffi.load("esent")
-- esent.JetGetThreadStats(pvResult, cbMax)
-- pvResult : void* out
-- cbMax : 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('ESENT.dll');
const JetGetThreadStats = lib.func('__stdcall', 'JetGetThreadStats', 'int32_t', ['void *', 'uint32_t']);
// JetGetThreadStats(pvResult, cbMax)
// pvResult : void* out -> 'void *'
// cbMax : 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("ESENT.dll", {
  JetGetThreadStats: { parameters: ["pointer", "u32"], result: "i32" },
});
// lib.symbols.JetGetThreadStats(pvResult, cbMax)
// pvResult : void* out -> "pointer"
// cbMax : 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
int32_t JetGetThreadStats(
    void* pvResult,
    uint32_t cbMax);
C, "ESENT.dll");
// $ffi->JetGetThreadStats(pvResult, cbMax);
// pvResult : void* out
// cbMax : 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 Esent extends StdCallLibrary {
    Esent INSTANCE = Native.load("esent", Esent.class);
    int JetGetThreadStats(
        Pointer pvResult,   // void* out
        int cbMax   // DWORD
    );
}

@[Link("esent")]
lib LibESENT
  fun JetGetThreadStats = JetGetThreadStats(
    pvResult : Void*,   # void* out
    cbMax : UInt32   # DWORD
  ) : 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 JetGetThreadStatsNative = Int32 Function(Pointer<Void>, Uint32);
typedef JetGetThreadStatsDart = int Function(Pointer<Void>, int);
final JetGetThreadStats = DynamicLibrary.open('ESENT.dll')
    .lookupFunction<JetGetThreadStatsNative, JetGetThreadStatsDart>('JetGetThreadStats');
// pvResult : void* out -> Pointer<Void>
// cbMax : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function JetGetThreadStats(
  pvResult: Pointer;   // void* out
  cbMax: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetGetThreadStats';

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

foreign import stdcall safe "JetGetThreadStats"
  c_JetGetThreadStats :: Ptr () -> Word32 -> IO Int32
-- pvResult : void* out -> Ptr ()
-- cbMax : 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 jetgetthreadstats =
  foreign "JetGetThreadStats"
    ((ptr void) @-> uint32_t @-> returning int32_t)
(* pvResult : void* out -> (ptr void) *)
(* cbMax : 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 esent (t "ESENT.dll"))
(cffi:use-foreign-library esent)

(cffi:defcfun ("JetGetThreadStats" jet-get-thread-stats :convention :stdcall) :int32
  (pv-result :pointer)   ; void* out
  (cb-max :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $JetGetThreadStats = Win32::API::More->new('ESENT',
    'int JetGetThreadStats(LPVOID pvResult, DWORD cbMax)');
# my $ret = $JetGetThreadStats->Call($pvResult, $cbMax);
# pvResult : void* out -> LPVOID
# cbMax : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。