GetSystemTimes

関数

システム全体のアイドル・カーネル・ユーザー時間を取得する。

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 GetSystemTimes(
    FILETIME* lpIdleTime,   // optional
    FILETIME* lpKernelTime,   // optional
    FILETIME* lpUserTime   // optional
);

パラメーター

名前	型	方向
lpIdleTime	FILETIME*	outoptional
lpKernelTime	FILETIME*	outoptional
lpUserTime	FILETIME*	outoptional

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL GetSystemTimes(
    FILETIME* lpIdleTime,   // optional
    FILETIME* lpKernelTime,   // optional
    FILETIME* lpUserTime   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool GetSystemTimes(
    IntPtr lpIdleTime,   // FILETIME* optional, out
    IntPtr lpKernelTime,   // FILETIME* optional, out
    IntPtr lpUserTime   // FILETIME* optional, out
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetSystemTimes(
    lpIdleTime As IntPtr,   ' FILETIME* optional, out
    lpKernelTime As IntPtr,   ' FILETIME* optional, out
    lpUserTime As IntPtr   ' FILETIME* optional, out
) As Boolean
End Function

' lpIdleTime : FILETIME* optional, out
' lpKernelTime : FILETIME* optional, out
' lpUserTime : FILETIME* optional, out
Declare PtrSafe Function GetSystemTimes Lib "kernel32" ( _
    ByVal lpIdleTime As LongPtr, _
    ByVal lpKernelTime As LongPtr, _
    ByVal lpUserTime 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

GetSystemTimes = ctypes.windll.kernel32.GetSystemTimes
GetSystemTimes.restype = wintypes.BOOL
GetSystemTimes.argtypes = [
    ctypes.c_void_p,  # lpIdleTime : FILETIME* optional, out
    ctypes.c_void_p,  # lpKernelTime : FILETIME* optional, out
    ctypes.c_void_p,  # lpUserTime : FILETIME* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetSystemTimes = Fiddle::Function.new(
  lib['GetSystemTimes'],
  [
    Fiddle::TYPE_VOIDP,  # lpIdleTime : FILETIME* optional, out
    Fiddle::TYPE_VOIDP,  # lpKernelTime : FILETIME* optional, out
    Fiddle::TYPE_VOIDP,  # lpUserTime : FILETIME* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetSystemTimes(
        lpIdleTime: *mut FILETIME,  // FILETIME* optional, out
        lpKernelTime: *mut FILETIME,  // FILETIME* optional, out
        lpUserTime: *mut FILETIME  // FILETIME* optional, out
    ) -> 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 GetSystemTimes(IntPtr lpIdleTime, IntPtr lpKernelTime, IntPtr lpUserTime);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetSystemTimes' -Namespace Win32 -PassThru
# $api::GetSystemTimes(lpIdleTime, lpKernelTime, lpUserTime)

#uselib "KERNEL32.dll"
#func global GetSystemTimes "GetSystemTimes" sptr, sptr, sptr
; GetSystemTimes varptr(lpIdleTime), varptr(lpKernelTime), varptr(lpUserTime)   ; 戻り値は stat
; lpIdleTime : FILETIME* optional, out -> "sptr"
; lpKernelTime : FILETIME* optional, out -> "sptr"
; lpUserTime : FILETIME* optional, out -> "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 GetSystemTimes "GetSystemTimes" var, var, var
; res = GetSystemTimes(lpIdleTime, lpKernelTime, lpUserTime)
; lpIdleTime : FILETIME* optional, out -> "var"
; lpKernelTime : FILETIME* optional, out -> "var"
; lpUserTime : FILETIME* optional, out -> "var"
; ※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 GetSystemTimes "GetSystemTimes" sptr, sptr, sptr
; res = GetSystemTimes(varptr(lpIdleTime), varptr(lpKernelTime), varptr(lpUserTime))
; lpIdleTime : FILETIME* optional, out -> "sptr"
; lpKernelTime : FILETIME* optional, out -> "sptr"
; lpUserTime : FILETIME* optional, out -> "sptr"
; ※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 GetSystemTimes(FILETIME* lpIdleTime, FILETIME* lpKernelTime, FILETIME* lpUserTime)
#uselib "KERNEL32.dll"
#cfunc global GetSystemTimes "GetSystemTimes" var, var, var
; res = GetSystemTimes(lpIdleTime, lpKernelTime, lpUserTime)
; lpIdleTime : FILETIME* optional, out -> "var"
; lpKernelTime : FILETIME* optional, out -> "var"
; lpUserTime : FILETIME* optional, out -> "var"
; ※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 GetSystemTimes(FILETIME* lpIdleTime, FILETIME* lpKernelTime, FILETIME* lpUserTime)
#uselib "KERNEL32.dll"
#cfunc global GetSystemTimes "GetSystemTimes" intptr, intptr, intptr
; res = GetSystemTimes(varptr(lpIdleTime), varptr(lpKernelTime), varptr(lpUserTime))
; lpIdleTime : FILETIME* optional, out -> "intptr"
; lpKernelTime : FILETIME* optional, out -> "intptr"
; lpUserTime : FILETIME* optional, out -> "intptr"
; ※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")
	procGetSystemTimes = kernel32.NewProc("GetSystemTimes")
)

// lpIdleTime (FILETIME* optional, out), lpKernelTime (FILETIME* optional, out), lpUserTime (FILETIME* optional, out)
r1, _, err := procGetSystemTimes.Call(
	uintptr(lpIdleTime),
	uintptr(lpKernelTime),
	uintptr(lpUserTime),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetSystemTimes(
  lpIdleTime: Pointer;   // FILETIME* optional, out
  lpKernelTime: Pointer;   // FILETIME* optional, out
  lpUserTime: Pointer   // FILETIME* optional, out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetSystemTimes';

result := DllCall("KERNEL32\GetSystemTimes"
    , "Ptr", lpIdleTime   ; FILETIME* optional, out
    , "Ptr", lpKernelTime   ; FILETIME* optional, out
    , "Ptr", lpUserTime   ; FILETIME* optional, out
    , "Int")   ; return: BOOL

●GetSystemTimes(lpIdleTime, lpKernelTime, lpUserTime) = DLL("KERNEL32.dll", "bool GetSystemTimes(void*, void*, void*)")
# 呼び出し: GetSystemTimes(lpIdleTime, lpKernelTime, lpUserTime)
# lpIdleTime : FILETIME* optional, out -> "void*"
# lpKernelTime : FILETIME* optional, out -> "void*"
# lpUserTime : FILETIME* optional, out -> "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)。