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SetCriticalSectionSpinCount

関数

クリティカルセクションのスピンカウントを設定する。

DLLKERNEL32.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

DWORD SetCriticalSectionSpinCount(
    CRITICAL_SECTION* lpCriticalSection,
    DWORD dwSpinCount
);

パラメーター

名前	型	方向
lpCriticalSection	CRITICAL_SECTION*	inout
dwSpinCount	DWORD	in

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD SetCriticalSectionSpinCount(
    CRITICAL_SECTION* lpCriticalSection,
    DWORD dwSpinCount
);

[DllImport("KERNEL32.dll", ExactSpelling = true)]
static extern uint SetCriticalSectionSpinCount(
    IntPtr lpCriticalSection,   // CRITICAL_SECTION* in/out
    uint dwSpinCount   // DWORD
);

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

' lpCriticalSection : CRITICAL_SECTION* in/out
' dwSpinCount : DWORD
Declare PtrSafe Function SetCriticalSectionSpinCount Lib "kernel32" ( _
    ByVal lpCriticalSection As LongPtr, _
    ByVal dwSpinCount 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

SetCriticalSectionSpinCount = ctypes.windll.kernel32.SetCriticalSectionSpinCount
SetCriticalSectionSpinCount.restype = wintypes.DWORD
SetCriticalSectionSpinCount.argtypes = [
    ctypes.c_void_p,  # lpCriticalSection : CRITICAL_SECTION* in/out
    wintypes.DWORD,  # dwSpinCount : DWORD
]

require 'fiddle'
require 'fiddle/import'

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

#[link(name = "kernel32")]
extern "system" {
    fn SetCriticalSectionSpinCount(
        lpCriticalSection: *mut CRITICAL_SECTION,  // CRITICAL_SECTION* in/out
        dwSpinCount: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern uint SetCriticalSectionSpinCount(IntPtr lpCriticalSection, uint dwSpinCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_SetCriticalSectionSpinCount' -Namespace Win32 -PassThru
# $api::SetCriticalSectionSpinCount(lpCriticalSection, dwSpinCount)

#uselib "KERNEL32.dll"
#func global SetCriticalSectionSpinCount "SetCriticalSectionSpinCount" sptr, sptr
; SetCriticalSectionSpinCount varptr(lpCriticalSection), dwSpinCount   ; 戻り値は stat
; lpCriticalSection : CRITICAL_SECTION* in/out -> "sptr"
; dwSpinCount : 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 SetCriticalSectionSpinCount "SetCriticalSectionSpinCount" var, int
; res = SetCriticalSectionSpinCount(lpCriticalSection, dwSpinCount)
; lpCriticalSection : CRITICAL_SECTION* in/out -> "var"
; dwSpinCount : 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 SetCriticalSectionSpinCount "SetCriticalSectionSpinCount" sptr, int
; res = SetCriticalSectionSpinCount(varptr(lpCriticalSection), dwSpinCount)
; lpCriticalSection : CRITICAL_SECTION* in/out -> "sptr"
; dwSpinCount : 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:

; DWORD SetCriticalSectionSpinCount(CRITICAL_SECTION* lpCriticalSection, DWORD dwSpinCount)
#uselib "KERNEL32.dll"
#cfunc global SetCriticalSectionSpinCount "SetCriticalSectionSpinCount" var, int
; res = SetCriticalSectionSpinCount(lpCriticalSection, dwSpinCount)
; lpCriticalSection : CRITICAL_SECTION* in/out -> "var"
; dwSpinCount : 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。; DWORD SetCriticalSectionSpinCount(CRITICAL_SECTION* lpCriticalSection, DWORD dwSpinCount)
#uselib "KERNEL32.dll"
#cfunc global SetCriticalSectionSpinCount "SetCriticalSectionSpinCount" intptr, int
; res = SetCriticalSectionSpinCount(varptr(lpCriticalSection), dwSpinCount)
; lpCriticalSection : CRITICAL_SECTION* in/out -> "intptr"
; dwSpinCount : 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")
	procSetCriticalSectionSpinCount = kernel32.NewProc("SetCriticalSectionSpinCount")
)

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

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

result := DllCall("KERNEL32\SetCriticalSectionSpinCount"
    , "Ptr", lpCriticalSection   ; CRITICAL_SECTION* in/out
    , "UInt", dwSpinCount   ; DWORD
    , "UInt")   ; return: DWORD

●SetCriticalSectionSpinCount(lpCriticalSection, dwSpinCount) = DLL("KERNEL32.dll", "dword SetCriticalSectionSpinCount(void*, dword)")
# 呼び出し: SetCriticalSectionSpinCount(lpCriticalSection, dwSpinCount)
# lpCriticalSection : CRITICAL_SECTION* in/out -> "void*"
# dwSpinCount : 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)。