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ReleaseMutexWhenCallbackReturns

関数

コールバック完了時に指定ミューテックスを解放する。

DLLKERNEL32.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

void ReleaseMutexWhenCallbackReturns(
    PTP_CALLBACK_INSTANCE pci,
    HANDLE mut
);

パラメーター

名前	型	方向
pci	PTP_CALLBACK_INSTANCE	in
mut	HANDLE	in

戻り値の型: void

各言語での呼び出し定義

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

void ReleaseMutexWhenCallbackReturns(
    PTP_CALLBACK_INSTANCE pci,
    HANDLE mut
);

[DllImport("KERNEL32.dll", ExactSpelling = true)]
static extern void ReleaseMutexWhenCallbackReturns(
    IntPtr pci,   // PTP_CALLBACK_INSTANCE
    IntPtr mut   // HANDLE
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Sub ReleaseMutexWhenCallbackReturns(
    pci As IntPtr,   ' PTP_CALLBACK_INSTANCE
    mut As IntPtr   ' HANDLE
)
End Sub

' pci : PTP_CALLBACK_INSTANCE
' mut : HANDLE
Declare PtrSafe Sub ReleaseMutexWhenCallbackReturns Lib "kernel32" ( _
    ByVal pci As LongPtr, _
    ByVal mut As LongPtr)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ReleaseMutexWhenCallbackReturns = ctypes.windll.kernel32.ReleaseMutexWhenCallbackReturns
ReleaseMutexWhenCallbackReturns.restype = None
ReleaseMutexWhenCallbackReturns.argtypes = [
    ctypes.c_ssize_t,  # pci : PTP_CALLBACK_INSTANCE
    wintypes.HANDLE,  # mut : HANDLE
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
ReleaseMutexWhenCallbackReturns = Fiddle::Function.new(
  lib['ReleaseMutexWhenCallbackReturns'],
  [
    Fiddle::TYPE_INTPTR_T,  # pci : PTP_CALLBACK_INSTANCE
    Fiddle::TYPE_VOIDP,  # mut : HANDLE
  ],
  Fiddle::TYPE_VOID)

#[link(name = "kernel32")]
extern "system" {
    fn ReleaseMutexWhenCallbackReturns(
        pci: isize,  // PTP_CALLBACK_INSTANCE
        mut: *mut core::ffi::c_void  // HANDLE
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern void ReleaseMutexWhenCallbackReturns(IntPtr pci, IntPtr mut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_ReleaseMutexWhenCallbackReturns' -Namespace Win32 -PassThru
# $api::ReleaseMutexWhenCallbackReturns(pci, mut)

#uselib "KERNEL32.dll"
#func global ReleaseMutexWhenCallbackReturns "ReleaseMutexWhenCallbackReturns" sptr, sptr
; ReleaseMutexWhenCallbackReturns pci, mut
; pci : PTP_CALLBACK_INSTANCE -> "sptr"
; mut : HANDLE -> "sptr"

#uselib "KERNEL32.dll"
#func global ReleaseMutexWhenCallbackReturns "ReleaseMutexWhenCallbackReturns" sptr, sptr
; ReleaseMutexWhenCallbackReturns pci, mut
; pci : PTP_CALLBACK_INSTANCE -> "sptr"
; mut : HANDLE -> "sptr"

; void ReleaseMutexWhenCallbackReturns(PTP_CALLBACK_INSTANCE pci, HANDLE mut)
#uselib "KERNEL32.dll"
#func global ReleaseMutexWhenCallbackReturns "ReleaseMutexWhenCallbackReturns" intptr, intptr
; ReleaseMutexWhenCallbackReturns pci, mut
; pci : PTP_CALLBACK_INSTANCE -> "intptr"
; mut : HANDLE -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procReleaseMutexWhenCallbackReturns = kernel32.NewProc("ReleaseMutexWhenCallbackReturns")
)

// pci (PTP_CALLBACK_INSTANCE), mut (HANDLE)
r1, _, err := procReleaseMutexWhenCallbackReturns.Call(
	uintptr(pci),
	uintptr(mut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure ReleaseMutexWhenCallbackReturns(
  pci: NativeInt;   // PTP_CALLBACK_INSTANCE
  mut: THandle   // HANDLE
); stdcall;
  external 'KERNEL32.dll' name 'ReleaseMutexWhenCallbackReturns';

result := DllCall("KERNEL32\ReleaseMutexWhenCallbackReturns"
    , "Ptr", pci   ; PTP_CALLBACK_INSTANCE
    , "Ptr", mut   ; HANDLE
    , "Int")   ; return: void

●ReleaseMutexWhenCallbackReturns(pci, mut) = DLL("KERNEL32.dll", "int ReleaseMutexWhenCallbackReturns(int, void*)")
# 呼び出し: ReleaseMutexWhenCallbackReturns(pci, mut)
# pci : PTP_CALLBACK_INSTANCE -> "int"
# mut : HANDLE -> "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)。