UmsThreadYield

関数

現在のUMSワーカースレッドの実行をスケジューラに譲る。

DLLKERNEL32.dll呼出規約winapiSetLastErrorあり対応OSWindows 7 以降

シグネチャ

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

BOOL UmsThreadYield(
    void* SchedulerParam
);

パラメーター

名前	型	方向
SchedulerParam	void*	in

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL UmsThreadYield(
    void* SchedulerParam
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool UmsThreadYield(
    IntPtr SchedulerParam   // void*
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function UmsThreadYield(
    SchedulerParam As IntPtr   ' void*
) As Boolean
End Function

' SchedulerParam : void*
Declare PtrSafe Function UmsThreadYield Lib "kernel32" ( _
    ByVal SchedulerParam 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

UmsThreadYield = ctypes.windll.kernel32.UmsThreadYield
UmsThreadYield.restype = wintypes.BOOL
UmsThreadYield.argtypes = [
    ctypes.POINTER(None),  # SchedulerParam : void*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
UmsThreadYield = Fiddle::Function.new(
  lib['UmsThreadYield'],
  [
    Fiddle::TYPE_VOIDP,  # SchedulerParam : void*
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn UmsThreadYield(
        SchedulerParam: *mut ()  // void*
    ) -> 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 UmsThreadYield(IntPtr SchedulerParam);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_UmsThreadYield' -Namespace Win32 -PassThru
# $api::UmsThreadYield(SchedulerParam)

#uselib "KERNEL32.dll"
#func global UmsThreadYield "UmsThreadYield" sptr
; UmsThreadYield SchedulerParam   ; 戻り値は stat
; SchedulerParam : void* -> "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 UmsThreadYield "UmsThreadYield" sptr
; res = UmsThreadYield(SchedulerParam)
; SchedulerParam : void* -> "sptr"

; BOOL UmsThreadYield(void* SchedulerParam)
#uselib "KERNEL32.dll"
#cfunc global UmsThreadYield "UmsThreadYield" intptr
; res = UmsThreadYield(SchedulerParam)
; SchedulerParam : void* -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procUmsThreadYield = kernel32.NewProc("UmsThreadYield")
)

// SchedulerParam (void*)
r1, _, err := procUmsThreadYield.Call(
	uintptr(SchedulerParam),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function UmsThreadYield(
  SchedulerParam: Pointer   // void*
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'UmsThreadYield';

result := DllCall("KERNEL32\UmsThreadYield"
    , "Ptr", SchedulerParam   ; void*
    , "Int")   ; return: BOOL

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