UnmapViewOfFile

関数

マップされたファイルビューをプロセスのアドレス空間から解除する。

DLLKERNEL32.dll呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

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

BOOL UnmapViewOfFile(
    MEMORY_MAPPED_VIEW_ADDRESS lpBaseAddress
);

パラメーター

名前	型	方向
lpBaseAddress	MEMORY_MAPPED_VIEW_ADDRESS	in

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL UnmapViewOfFile(
    MEMORY_MAPPED_VIEW_ADDRESS lpBaseAddress
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool UnmapViewOfFile(
    MEMORY_MAPPED_VIEW_ADDRESS lpBaseAddress   // MEMORY_MAPPED_VIEW_ADDRESS
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function UnmapViewOfFile(
    lpBaseAddress As MEMORY_MAPPED_VIEW_ADDRESS   ' MEMORY_MAPPED_VIEW_ADDRESS
) As Boolean
End Function

' lpBaseAddress : MEMORY_MAPPED_VIEW_ADDRESS
Declare PtrSafe Function UnmapViewOfFile Lib "kernel32" ( _
    ByVal lpBaseAddress 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

UnmapViewOfFile = ctypes.windll.kernel32.UnmapViewOfFile
UnmapViewOfFile.restype = wintypes.BOOL
UnmapViewOfFile.argtypes = [
    MEMORY_MAPPED_VIEW_ADDRESS,  # lpBaseAddress : MEMORY_MAPPED_VIEW_ADDRESS
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
UnmapViewOfFile = Fiddle::Function.new(
  lib['UnmapViewOfFile'],
  [
    Fiddle::TYPE_VOIDP,  # lpBaseAddress : MEMORY_MAPPED_VIEW_ADDRESS
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn UnmapViewOfFile(
        lpBaseAddress: MEMORY_MAPPED_VIEW_ADDRESS  // MEMORY_MAPPED_VIEW_ADDRESS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool UnmapViewOfFile(MEMORY_MAPPED_VIEW_ADDRESS lpBaseAddress);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_UnmapViewOfFile' -Namespace Win32 -PassThru
# $api::UnmapViewOfFile(lpBaseAddress)

#uselib "KERNEL32.dll"
#func global UnmapViewOfFile "UnmapViewOfFile" sptr
; UnmapViewOfFile lpBaseAddress   ; 戻り値は stat
; lpBaseAddress : MEMORY_MAPPED_VIEW_ADDRESS -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 UnmapViewOfFile "UnmapViewOfFile" int
; res = UnmapViewOfFile(lpBaseAddress)
; lpBaseAddress : MEMORY_MAPPED_VIEW_ADDRESS -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

; BOOL UnmapViewOfFile(MEMORY_MAPPED_VIEW_ADDRESS lpBaseAddress)
#uselib "KERNEL32.dll"
#cfunc global UnmapViewOfFile "UnmapViewOfFile" int
; res = UnmapViewOfFile(lpBaseAddress)
; lpBaseAddress : MEMORY_MAPPED_VIEW_ADDRESS -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procUnmapViewOfFile = kernel32.NewProc("UnmapViewOfFile")
)

// lpBaseAddress (MEMORY_MAPPED_VIEW_ADDRESS)
r1, _, err := procUnmapViewOfFile.Call(
	uintptr(lpBaseAddress),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function UnmapViewOfFile(
  lpBaseAddress: MEMORY_MAPPED_VIEW_ADDRESS   // MEMORY_MAPPED_VIEW_ADDRESS
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'UnmapViewOfFile';

result := DllCall("KERNEL32\UnmapViewOfFile"
    , "Ptr", lpBaseAddress   ; MEMORY_MAPPED_VIEW_ADDRESS
    , "Int")   ; return: BOOL

●UnmapViewOfFile(lpBaseAddress) = DLL("KERNEL32.dll", "bool UnmapViewOfFile(void*)")
# 呼び出し: UnmapViewOfFile(lpBaseAddress)
# lpBaseAddress : MEMORY_MAPPED_VIEW_ADDRESS -> "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)。