ホーム › System.Performance › PdhEnumObjectItemsW

PdhEnumObjectItemsW

関数

オブジェクトのカウンター名とインスタンス名を列挙する。

DLLpdh.dll文字セットUnicode (-W)呼出規約winapi対応OSWindows XP 以降

シグネチャ

// pdh.dll  (Unicode / -W)
#include <windows.h>

DWORD PdhEnumObjectItemsW(
    LPCWSTR szDataSource,   // optional
    LPCWSTR szMachineName,   // optional
    LPCWSTR szObjectName,
    LPWSTR mszCounterList,   // optional
    DWORD* pcchCounterListLength,
    LPWSTR mszInstanceList,   // optional
    DWORD* pcchInstanceListLength,
    PERF_DETAIL dwDetailLevel,
    DWORD dwFlags
);

パラメーター

名前	型	方向
szDataSource	LPCWSTR	inoptional
szMachineName	LPCWSTR	inoptional
szObjectName	LPCWSTR	in
mszCounterList	LPWSTR	outoptional
pcchCounterListLength	DWORD*	inout
mszInstanceList	LPWSTR	outoptional
pcchInstanceListLength	DWORD*	inout
dwDetailLevel	PERF_DETAIL	in
dwFlags	DWORD	in

戻り値の型: DWORD

各言語での呼び出し定義

// pdh.dll  (Unicode / -W)
#include <windows.h>

DWORD PdhEnumObjectItemsW(
    LPCWSTR szDataSource,   // optional
    LPCWSTR szMachineName,   // optional
    LPCWSTR szObjectName,
    LPWSTR mszCounterList,   // optional
    DWORD* pcchCounterListLength,
    LPWSTR mszInstanceList,   // optional
    DWORD* pcchInstanceListLength,
    PERF_DETAIL dwDetailLevel,
    DWORD dwFlags
);

[DllImport("pdh.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern uint PdhEnumObjectItemsW(
    [MarshalAs(UnmanagedType.LPWStr)] string szDataSource,   // LPCWSTR optional
    [MarshalAs(UnmanagedType.LPWStr)] string szMachineName,   // LPCWSTR optional
    [MarshalAs(UnmanagedType.LPWStr)] string szObjectName,   // LPCWSTR
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder mszCounterList,   // LPWSTR optional, out
    ref uint pcchCounterListLength,   // DWORD* in/out
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder mszInstanceList,   // LPWSTR optional, out
    ref uint pcchInstanceListLength,   // DWORD* in/out
    uint dwDetailLevel,   // PERF_DETAIL
    uint dwFlags   // DWORD
);

<DllImport("pdh.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function PdhEnumObjectItemsW(
    <MarshalAs(UnmanagedType.LPWStr)> szDataSource As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> szMachineName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> szObjectName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> mszCounterList As System.Text.StringBuilder,   ' LPWSTR optional, out
    ByRef pcchCounterListLength As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> mszInstanceList As System.Text.StringBuilder,   ' LPWSTR optional, out
    ByRef pcchInstanceListLength As UInteger,   ' DWORD* in/out
    dwDetailLevel As UInteger,   ' PERF_DETAIL
    dwFlags As UInteger   ' DWORD
) As UInteger
End Function

' szDataSource : LPCWSTR optional
' szMachineName : LPCWSTR optional
' szObjectName : LPCWSTR
' mszCounterList : LPWSTR optional, out
' pcchCounterListLength : DWORD* in/out
' mszInstanceList : LPWSTR optional, out
' pcchInstanceListLength : DWORD* in/out
' dwDetailLevel : PERF_DETAIL
' dwFlags : DWORD
Declare PtrSafe Function PdhEnumObjectItemsW Lib "pdh" ( _
    ByVal szDataSource As LongPtr, _
    ByVal szMachineName As LongPtr, _
    ByVal szObjectName As LongPtr, _
    ByVal mszCounterList As LongPtr, _
    ByRef pcchCounterListLength As Long, _
    ByVal mszInstanceList As LongPtr, _
    ByRef pcchInstanceListLength As Long, _
    ByVal dwDetailLevel As Long, _
    ByVal dwFlags As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

PdhEnumObjectItemsW = ctypes.windll.pdh.PdhEnumObjectItemsW
PdhEnumObjectItemsW.restype = wintypes.DWORD
PdhEnumObjectItemsW.argtypes = [
    wintypes.LPCWSTR,  # szDataSource : LPCWSTR optional
    wintypes.LPCWSTR,  # szMachineName : LPCWSTR optional
    wintypes.LPCWSTR,  # szObjectName : LPCWSTR
    wintypes.LPWSTR,  # mszCounterList : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchCounterListLength : DWORD* in/out
    wintypes.LPWSTR,  # mszInstanceList : LPWSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchInstanceListLength : DWORD* in/out
    wintypes.DWORD,  # dwDetailLevel : PERF_DETAIL
    wintypes.DWORD,  # dwFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('pdh.dll')
PdhEnumObjectItemsW = Fiddle::Function.new(
  lib['PdhEnumObjectItemsW'],
  [
    Fiddle::TYPE_VOIDP,  # szDataSource : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # szMachineName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # szObjectName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # mszCounterList : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchCounterListLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # mszInstanceList : LPWSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchInstanceListLength : DWORD* in/out
    -Fiddle::TYPE_INT,  # dwDetailLevel : PERF_DETAIL
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "pdh")]
extern "system" {
    fn PdhEnumObjectItemsW(
        szDataSource: *const u16,  // LPCWSTR optional
        szMachineName: *const u16,  // LPCWSTR optional
        szObjectName: *const u16,  // LPCWSTR
        mszCounterList: *mut u16,  // LPWSTR optional, out
        pcchCounterListLength: *mut u32,  // DWORD* in/out
        mszInstanceList: *mut u16,  // LPWSTR optional, out
        pcchInstanceListLength: *mut u32,  // DWORD* in/out
        dwDetailLevel: u32,  // PERF_DETAIL
        dwFlags: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("pdh.dll", CharSet = CharSet.Unicode)]
public static extern uint PdhEnumObjectItemsW([MarshalAs(UnmanagedType.LPWStr)] string szDataSource, [MarshalAs(UnmanagedType.LPWStr)] string szMachineName, [MarshalAs(UnmanagedType.LPWStr)] string szObjectName, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder mszCounterList, ref uint pcchCounterListLength, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder mszInstanceList, ref uint pcchInstanceListLength, uint dwDetailLevel, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'pdh_PdhEnumObjectItemsW' -Namespace Win32 -PassThru
# $api::PdhEnumObjectItemsW(szDataSource, szMachineName, szObjectName, mszCounterList, pcchCounterListLength, mszInstanceList, pcchInstanceListLength, dwDetailLevel, dwFlags)

#uselib "pdh.dll"
#func global PdhEnumObjectItemsW "PdhEnumObjectItemsW" wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr
; PdhEnumObjectItemsW szDataSource, szMachineName, szObjectName, varptr(mszCounterList), varptr(pcchCounterListLength), varptr(mszInstanceList), varptr(pcchInstanceListLength), dwDetailLevel, dwFlags   ; 戻り値は stat
; szDataSource : LPCWSTR optional -> "wptr"
; szMachineName : LPCWSTR optional -> "wptr"
; szObjectName : LPCWSTR -> "wptr"
; mszCounterList : LPWSTR optional, out -> "wptr"
; pcchCounterListLength : DWORD* in/out -> "wptr"
; mszInstanceList : LPWSTR optional, out -> "wptr"
; pcchInstanceListLength : DWORD* in/out -> "wptr"
; dwDetailLevel : PERF_DETAIL -> "wptr"
; dwFlags : DWORD -> "wptr"
; ※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 "pdh.dll"
#cfunc global PdhEnumObjectItemsW "PdhEnumObjectItemsW" wstr, wstr, wstr, var, var, var, var, int, int
; res = PdhEnumObjectItemsW(szDataSource, szMachineName, szObjectName, mszCounterList, pcchCounterListLength, mszInstanceList, pcchInstanceListLength, dwDetailLevel, dwFlags)
; szDataSource : LPCWSTR optional -> "wstr"
; szMachineName : LPCWSTR optional -> "wstr"
; szObjectName : LPCWSTR -> "wstr"
; mszCounterList : LPWSTR optional, out -> "var"
; pcchCounterListLength : DWORD* in/out -> "var"
; mszInstanceList : LPWSTR optional, out -> "var"
; pcchInstanceListLength : DWORD* in/out -> "var"
; dwDetailLevel : PERF_DETAIL -> "int"
; dwFlags : 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 "pdh.dll"
#cfunc global PdhEnumObjectItemsW "PdhEnumObjectItemsW" wstr, wstr, wstr, sptr, sptr, sptr, sptr, int, int
; res = PdhEnumObjectItemsW(szDataSource, szMachineName, szObjectName, varptr(mszCounterList), varptr(pcchCounterListLength), varptr(mszInstanceList), varptr(pcchInstanceListLength), dwDetailLevel, dwFlags)
; szDataSource : LPCWSTR optional -> "wstr"
; szMachineName : LPCWSTR optional -> "wstr"
; szObjectName : LPCWSTR -> "wstr"
; mszCounterList : LPWSTR optional, out -> "sptr"
; pcchCounterListLength : DWORD* in/out -> "sptr"
; mszInstanceList : LPWSTR optional, out -> "sptr"
; pcchInstanceListLength : DWORD* in/out -> "sptr"
; dwDetailLevel : PERF_DETAIL -> "int"
; dwFlags : 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 PdhEnumObjectItemsW(LPCWSTR szDataSource, LPCWSTR szMachineName, LPCWSTR szObjectName, LPWSTR mszCounterList, DWORD* pcchCounterListLength, LPWSTR mszInstanceList, DWORD* pcchInstanceListLength, PERF_DETAIL dwDetailLevel, DWORD dwFlags)
#uselib "pdh.dll"
#cfunc global PdhEnumObjectItemsW "PdhEnumObjectItemsW" wstr, wstr, wstr, var, var, var, var, int, int
; res = PdhEnumObjectItemsW(szDataSource, szMachineName, szObjectName, mszCounterList, pcchCounterListLength, mszInstanceList, pcchInstanceListLength, dwDetailLevel, dwFlags)
; szDataSource : LPCWSTR optional -> "wstr"
; szMachineName : LPCWSTR optional -> "wstr"
; szObjectName : LPCWSTR -> "wstr"
; mszCounterList : LPWSTR optional, out -> "var"
; pcchCounterListLength : DWORD* in/out -> "var"
; mszInstanceList : LPWSTR optional, out -> "var"
; pcchInstanceListLength : DWORD* in/out -> "var"
; dwDetailLevel : PERF_DETAIL -> "int"
; dwFlags : 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 PdhEnumObjectItemsW(LPCWSTR szDataSource, LPCWSTR szMachineName, LPCWSTR szObjectName, LPWSTR mszCounterList, DWORD* pcchCounterListLength, LPWSTR mszInstanceList, DWORD* pcchInstanceListLength, PERF_DETAIL dwDetailLevel, DWORD dwFlags)
#uselib "pdh.dll"
#cfunc global PdhEnumObjectItemsW "PdhEnumObjectItemsW" wstr, wstr, wstr, intptr, intptr, intptr, intptr, int, int
; res = PdhEnumObjectItemsW(szDataSource, szMachineName, szObjectName, varptr(mszCounterList), varptr(pcchCounterListLength), varptr(mszInstanceList), varptr(pcchInstanceListLength), dwDetailLevel, dwFlags)
; szDataSource : LPCWSTR optional -> "wstr"
; szMachineName : LPCWSTR optional -> "wstr"
; szObjectName : LPCWSTR -> "wstr"
; mszCounterList : LPWSTR optional, out -> "intptr"
; pcchCounterListLength : DWORD* in/out -> "intptr"
; mszInstanceList : LPWSTR optional, out -> "intptr"
; pcchInstanceListLength : DWORD* in/out -> "intptr"
; dwDetailLevel : PERF_DETAIL -> "int"
; dwFlags : 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 (
	pdh = windows.NewLazySystemDLL("pdh.dll")
	procPdhEnumObjectItemsW = pdh.NewProc("PdhEnumObjectItemsW")
)

// szDataSource (LPCWSTR optional), szMachineName (LPCWSTR optional), szObjectName (LPCWSTR), mszCounterList (LPWSTR optional, out), pcchCounterListLength (DWORD* in/out), mszInstanceList (LPWSTR optional, out), pcchInstanceListLength (DWORD* in/out), dwDetailLevel (PERF_DETAIL), dwFlags (DWORD)
r1, _, err := procPdhEnumObjectItemsW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szDataSource))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szMachineName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szObjectName))),
	uintptr(mszCounterList),
	uintptr(pcchCounterListLength),
	uintptr(mszInstanceList),
	uintptr(pcchInstanceListLength),
	uintptr(dwDetailLevel),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PdhEnumObjectItemsW(
  szDataSource: PWideChar;   // LPCWSTR optional
  szMachineName: PWideChar;   // LPCWSTR optional
  szObjectName: PWideChar;   // LPCWSTR
  mszCounterList: PWideChar;   // LPWSTR optional, out
  pcchCounterListLength: Pointer;   // DWORD* in/out
  mszInstanceList: PWideChar;   // LPWSTR optional, out
  pcchInstanceListLength: Pointer;   // DWORD* in/out
  dwDetailLevel: DWORD;   // PERF_DETAIL
  dwFlags: DWORD   // DWORD
): DWORD; stdcall;
  external 'pdh.dll' name 'PdhEnumObjectItemsW';

result := DllCall("pdh\PdhEnumObjectItemsW"
    , "WStr", szDataSource   ; LPCWSTR optional
    , "WStr", szMachineName   ; LPCWSTR optional
    , "WStr", szObjectName   ; LPCWSTR
    , "Ptr", mszCounterList   ; LPWSTR optional, out
    , "Ptr", pcchCounterListLength   ; DWORD* in/out
    , "Ptr", mszInstanceList   ; LPWSTR optional, out
    , "Ptr", pcchInstanceListLength   ; DWORD* in/out
    , "UInt", dwDetailLevel   ; PERF_DETAIL
    , "UInt", dwFlags   ; DWORD
    , "UInt")   ; return: DWORD

●PdhEnumObjectItemsW(szDataSource, szMachineName, szObjectName, mszCounterList, pcchCounterListLength, mszInstanceList, pcchInstanceListLength, dwDetailLevel, dwFlags) = DLL("pdh.dll", "dword PdhEnumObjectItemsW(char*, char*, char*, char*, void*, char*, void*, dword, dword)")
# 呼び出し: PdhEnumObjectItemsW(szDataSource, szMachineName, szObjectName, mszCounterList, pcchCounterListLength, mszInstanceList, pcchInstanceListLength, dwDetailLevel, dwFlags)
# szDataSource : LPCWSTR optional -> "char*"
# szMachineName : LPCWSTR optional -> "char*"
# szObjectName : LPCWSTR -> "char*"
# mszCounterList : LPWSTR optional, out -> "char*"
# pcchCounterListLength : DWORD* in/out -> "void*"
# mszInstanceList : LPWSTR optional, out -> "char*"
# pcchInstanceListLength : DWORD* in/out -> "void*"
# dwDetailLevel : PERF_DETAIL -> "dword"
# dwFlags : 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。