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InitializeCriticalSectionEx

関数

フラグとスピンカウント付きでクリティカルセクションを初期化する。

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

シグネチャ

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

BOOL InitializeCriticalSectionEx(
    CRITICAL_SECTION* lpCriticalSection,
    DWORD dwSpinCount,
    DWORD Flags
);

パラメーター

名前	型	方向
lpCriticalSection	CRITICAL_SECTION*	out
dwSpinCount	DWORD	in
Flags	DWORD	in

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL InitializeCriticalSectionEx(
    CRITICAL_SECTION* lpCriticalSection,
    DWORD dwSpinCount,
    DWORD Flags
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool InitializeCriticalSectionEx(
    IntPtr lpCriticalSection,   // CRITICAL_SECTION* out
    uint dwSpinCount,   // DWORD
    uint Flags   // DWORD
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function InitializeCriticalSectionEx(
    lpCriticalSection As IntPtr,   ' CRITICAL_SECTION* out
    dwSpinCount As UInteger,   ' DWORD
    Flags As UInteger   ' DWORD
) As Boolean
End Function

' lpCriticalSection : CRITICAL_SECTION* out
' dwSpinCount : DWORD
' Flags : DWORD
Declare PtrSafe Function InitializeCriticalSectionEx Lib "kernel32" ( _
    ByVal lpCriticalSection As LongPtr, _
    ByVal dwSpinCount As Long, _
    ByVal Flags 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

InitializeCriticalSectionEx = ctypes.windll.kernel32.InitializeCriticalSectionEx
InitializeCriticalSectionEx.restype = wintypes.BOOL
InitializeCriticalSectionEx.argtypes = [
    ctypes.c_void_p,  # lpCriticalSection : CRITICAL_SECTION* out
    wintypes.DWORD,  # dwSpinCount : DWORD
    wintypes.DWORD,  # Flags : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
InitializeCriticalSectionEx = Fiddle::Function.new(
  lib['InitializeCriticalSectionEx'],
  [
    Fiddle::TYPE_VOIDP,  # lpCriticalSection : CRITICAL_SECTION* out
    -Fiddle::TYPE_INT,  # dwSpinCount : DWORD
    -Fiddle::TYPE_INT,  # Flags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn InitializeCriticalSectionEx(
        lpCriticalSection: *mut CRITICAL_SECTION,  // CRITICAL_SECTION* out
        dwSpinCount: u32,  // DWORD
        Flags: u32  // DWORD
    ) -> 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 InitializeCriticalSectionEx(IntPtr lpCriticalSection, uint dwSpinCount, uint Flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_InitializeCriticalSectionEx' -Namespace Win32 -PassThru
# $api::InitializeCriticalSectionEx(lpCriticalSection, dwSpinCount, Flags)

#uselib "KERNEL32.dll"
#func global InitializeCriticalSectionEx "InitializeCriticalSectionEx" sptr, sptr, sptr
; InitializeCriticalSectionEx varptr(lpCriticalSection), dwSpinCount, Flags   ; 戻り値は stat
; lpCriticalSection : CRITICAL_SECTION* out -> "sptr"
; dwSpinCount : DWORD -> "sptr"
; Flags : 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。

出力引数:

#uselib "KERNEL32.dll"
#cfunc global InitializeCriticalSectionEx "InitializeCriticalSectionEx" var, int, int
; res = InitializeCriticalSectionEx(lpCriticalSection, dwSpinCount, Flags)
; lpCriticalSection : CRITICAL_SECTION* out -> "var"
; dwSpinCount : DWORD -> "int"
; Flags : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。#uselib "KERNEL32.dll"
#cfunc global InitializeCriticalSectionEx "InitializeCriticalSectionEx" sptr, int, int
; res = InitializeCriticalSectionEx(varptr(lpCriticalSection), dwSpinCount, Flags)
; lpCriticalSection : CRITICAL_SECTION* out -> "sptr"
; dwSpinCount : DWORD -> "int"
; Flags : DWORD -> "int"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL InitializeCriticalSectionEx(CRITICAL_SECTION* lpCriticalSection, DWORD dwSpinCount, DWORD Flags)
#uselib "KERNEL32.dll"
#cfunc global InitializeCriticalSectionEx "InitializeCriticalSectionEx" var, int, int
; res = InitializeCriticalSectionEx(lpCriticalSection, dwSpinCount, Flags)
; lpCriticalSection : CRITICAL_SECTION* out -> "var"
; dwSpinCount : DWORD -> "int"
; Flags : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; BOOL InitializeCriticalSectionEx(CRITICAL_SECTION* lpCriticalSection, DWORD dwSpinCount, DWORD Flags)
#uselib "KERNEL32.dll"
#cfunc global InitializeCriticalSectionEx "InitializeCriticalSectionEx" intptr, int, int
; res = InitializeCriticalSectionEx(varptr(lpCriticalSection), dwSpinCount, Flags)
; lpCriticalSection : CRITICAL_SECTION* out -> "intptr"
; dwSpinCount : DWORD -> "int"
; Flags : DWORD -> "int"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procInitializeCriticalSectionEx = kernel32.NewProc("InitializeCriticalSectionEx")
)

// lpCriticalSection (CRITICAL_SECTION* out), dwSpinCount (DWORD), Flags (DWORD)
r1, _, err := procInitializeCriticalSectionEx.Call(
	uintptr(lpCriticalSection),
	uintptr(dwSpinCount),
	uintptr(Flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function InitializeCriticalSectionEx(
  lpCriticalSection: Pointer;   // CRITICAL_SECTION* out
  dwSpinCount: DWORD;   // DWORD
  Flags: DWORD   // DWORD
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'InitializeCriticalSectionEx';

result := DllCall("KERNEL32\InitializeCriticalSectionEx"
    , "Ptr", lpCriticalSection   ; CRITICAL_SECTION* out
    , "UInt", dwSpinCount   ; DWORD
    , "UInt", Flags   ; DWORD
    , "Int")   ; return: BOOL

●InitializeCriticalSectionEx(lpCriticalSection, dwSpinCount, Flags) = DLL("KERNEL32.dll", "bool InitializeCriticalSectionEx(void*, dword, dword)")
# 呼び出し: InitializeCriticalSectionEx(lpCriticalSection, dwSpinCount, Flags)
# lpCriticalSection : CRITICAL_SECTION* out -> "void*"
# dwSpinCount : DWORD -> "dword"
# Flags : 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)。