ReclaimVirtualMemory

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

DWORD ReclaimVirtualMemory(
    const void* VirtualAddress,
    UINT_PTR Size
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function ReclaimVirtualMemory(
    VirtualAddress As IntPtr,   ' void*
    Size As UIntPtr   ' UINT_PTR
) As UInteger
End Function

' VirtualAddress : void*
' Size : UINT_PTR
Declare PtrSafe Function ReclaimVirtualMemory Lib "kernel32" ( _
    ByVal VirtualAddress As LongPtr, _
    ByVal Size 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

ReclaimVirtualMemory = ctypes.windll.kernel32.ReclaimVirtualMemory
ReclaimVirtualMemory.restype = wintypes.DWORD
ReclaimVirtualMemory.argtypes = [
    ctypes.POINTER(None),  # VirtualAddress : void*
    ctypes.c_size_t,  # Size : UINT_PTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
ReclaimVirtualMemory = Fiddle::Function.new(
  lib['ReclaimVirtualMemory'],
  [
    Fiddle::TYPE_VOIDP,  # VirtualAddress : void*
    Fiddle::TYPE_UINTPTR_T,  # Size : UINT_PTR
  ],
  -Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn ReclaimVirtualMemory(
        VirtualAddress: *const (),  // void*
        Size: usize  // UINT_PTR
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern uint ReclaimVirtualMemory(IntPtr VirtualAddress, UIntPtr Size);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_ReclaimVirtualMemory' -Namespace Win32 -PassThru
# $api::ReclaimVirtualMemory(VirtualAddress, Size)

#uselib "KERNEL32.dll"
#func global ReclaimVirtualMemory "ReclaimVirtualMemory" sptr, sptr
; ReclaimVirtualMemory VirtualAddress, Size   ; 戻り値は stat
; VirtualAddress : void* -> "sptr"
; Size : UINT_PTR -> "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 "KERNEL32.dll"
#cfunc global ReclaimVirtualMemory "ReclaimVirtualMemory" sptr, sptr
; res = ReclaimVirtualMemory(VirtualAddress, Size)
; VirtualAddress : void* -> "sptr"
; Size : UINT_PTR -> "sptr"

; DWORD ReclaimVirtualMemory(void* VirtualAddress, UINT_PTR Size)
#uselib "KERNEL32.dll"
#cfunc global ReclaimVirtualMemory "ReclaimVirtualMemory" intptr, intptr
; res = ReclaimVirtualMemory(VirtualAddress, Size)
; VirtualAddress : void* -> "intptr"
; Size : UINT_PTR -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procReclaimVirtualMemory = kernel32.NewProc("ReclaimVirtualMemory")
)

// VirtualAddress (void*), Size (UINT_PTR)
r1, _, err := procReclaimVirtualMemory.Call(
	uintptr(VirtualAddress),
	uintptr(Size),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function ReclaimVirtualMemory(
  VirtualAddress: Pointer;   // void*
  Size: NativeUInt   // UINT_PTR
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'ReclaimVirtualMemory';

result := DllCall("KERNEL32\ReclaimVirtualMemory"
    , "Ptr", VirtualAddress   ; void*
    , "UPtr", Size   ; UINT_PTR
    , "UInt")   ; return: DWORD

●ReclaimVirtualMemory(VirtualAddress, Size) = DLL("KERNEL32.dll", "dword ReclaimVirtualMemory(void*, int)")
# 呼び出し: ReclaimVirtualMemory(VirtualAddress, Size)
# VirtualAddress : void* -> "void*"
# Size : UINT_PTR -> "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)。