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PdhEnumObjectsA

関数

パフォーマンスオブジェクト一覧を列挙する(ANSI版)。

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

シグネチャ

// pdh.dll  (ANSI / -A)
#include <windows.h>

DWORD PdhEnumObjectsA(
    LPCSTR szDataSource,   // optional
    LPCSTR szMachineName,   // optional
    LPSTR mszObjectList,   // optional
    DWORD* pcchBufferSize,
    PERF_DETAIL dwDetailLevel,
    BOOL bRefresh
);

パラメーター

名前	型	方向
szDataSource	LPCSTR	inoptional
szMachineName	LPCSTR	inoptional
mszObjectList	LPSTR	outoptional
pcchBufferSize	DWORD*	inout
dwDetailLevel	PERF_DETAIL	in
bRefresh	BOOL	in

戻り値の型: DWORD

各言語での呼び出し定義

// pdh.dll  (ANSI / -A)
#include <windows.h>

DWORD PdhEnumObjectsA(
    LPCSTR szDataSource,   // optional
    LPCSTR szMachineName,   // optional
    LPSTR mszObjectList,   // optional
    DWORD* pcchBufferSize,
    PERF_DETAIL dwDetailLevel,
    BOOL bRefresh
);

[DllImport("pdh.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern uint PdhEnumObjectsA(
    [MarshalAs(UnmanagedType.LPStr)] string szDataSource,   // LPCSTR optional
    [MarshalAs(UnmanagedType.LPStr)] string szMachineName,   // LPCSTR optional
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder mszObjectList,   // LPSTR optional, out
    ref uint pcchBufferSize,   // DWORD* in/out
    uint dwDetailLevel,   // PERF_DETAIL
    bool bRefresh   // BOOL
);

<DllImport("pdh.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function PdhEnumObjectsA(
    <MarshalAs(UnmanagedType.LPStr)> szDataSource As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> szMachineName As String,   ' LPCSTR optional
    <MarshalAs(UnmanagedType.LPStr)> mszObjectList As System.Text.StringBuilder,   ' LPSTR optional, out
    ByRef pcchBufferSize As UInteger,   ' DWORD* in/out
    dwDetailLevel As UInteger,   ' PERF_DETAIL
    bRefresh As Boolean   ' BOOL
) As UInteger
End Function

' szDataSource : LPCSTR optional
' szMachineName : LPCSTR optional
' mszObjectList : LPSTR optional, out
' pcchBufferSize : DWORD* in/out
' dwDetailLevel : PERF_DETAIL
' bRefresh : BOOL
Declare PtrSafe Function PdhEnumObjectsA Lib "pdh" ( _
    ByVal szDataSource As String, _
    ByVal szMachineName As String, _
    ByVal mszObjectList As String, _
    ByRef pcchBufferSize As Long, _
    ByVal dwDetailLevel As Long, _
    ByVal bRefresh 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

PdhEnumObjectsA = ctypes.windll.pdh.PdhEnumObjectsA
PdhEnumObjectsA.restype = wintypes.DWORD
PdhEnumObjectsA.argtypes = [
    wintypes.LPCSTR,  # szDataSource : LPCSTR optional
    wintypes.LPCSTR,  # szMachineName : LPCSTR optional
    wintypes.LPSTR,  # mszObjectList : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchBufferSize : DWORD* in/out
    wintypes.DWORD,  # dwDetailLevel : PERF_DETAIL
    wintypes.BOOL,  # bRefresh : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('pdh.dll')
PdhEnumObjectsA = Fiddle::Function.new(
  lib['PdhEnumObjectsA'],
  [
    Fiddle::TYPE_VOIDP,  # szDataSource : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # szMachineName : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # mszObjectList : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchBufferSize : DWORD* in/out
    -Fiddle::TYPE_INT,  # dwDetailLevel : PERF_DETAIL
    Fiddle::TYPE_INT,  # bRefresh : BOOL
  ],
  -Fiddle::TYPE_INT)

#[link(name = "pdh")]
extern "system" {
    fn PdhEnumObjectsA(
        szDataSource: *const u8,  // LPCSTR optional
        szMachineName: *const u8,  // LPCSTR optional
        mszObjectList: *mut u8,  // LPSTR optional, out
        pcchBufferSize: *mut u32,  // DWORD* in/out
        dwDetailLevel: u32,  // PERF_DETAIL
        bRefresh: i32  // BOOL
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("pdh.dll", CharSet = CharSet.Ansi)]
public static extern uint PdhEnumObjectsA([MarshalAs(UnmanagedType.LPStr)] string szDataSource, [MarshalAs(UnmanagedType.LPStr)] string szMachineName, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder mszObjectList, ref uint pcchBufferSize, uint dwDetailLevel, bool bRefresh);
"@
$api = Add-Type -MemberDefinition $sig -Name 'pdh_PdhEnumObjectsA' -Namespace Win32 -PassThru
# $api::PdhEnumObjectsA(szDataSource, szMachineName, mszObjectList, pcchBufferSize, dwDetailLevel, bRefresh)

#uselib "pdh.dll"
#func global PdhEnumObjectsA "PdhEnumObjectsA" sptr, sptr, sptr, sptr, sptr, sptr
; PdhEnumObjectsA szDataSource, szMachineName, varptr(mszObjectList), varptr(pcchBufferSize), dwDetailLevel, bRefresh   ; 戻り値は stat
; szDataSource : LPCSTR optional -> "sptr"
; szMachineName : LPCSTR optional -> "sptr"
; mszObjectList : LPSTR optional, out -> "sptr"
; pcchBufferSize : DWORD* in/out -> "sptr"
; dwDetailLevel : PERF_DETAIL -> "sptr"
; bRefresh : BOOL -> "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 "pdh.dll"
#cfunc global PdhEnumObjectsA "PdhEnumObjectsA" str, str, var, var, int, int
; res = PdhEnumObjectsA(szDataSource, szMachineName, mszObjectList, pcchBufferSize, dwDetailLevel, bRefresh)
; szDataSource : LPCSTR optional -> "str"
; szMachineName : LPCSTR optional -> "str"
; mszObjectList : LPSTR optional, out -> "var"
; pcchBufferSize : DWORD* in/out -> "var"
; dwDetailLevel : PERF_DETAIL -> "int"
; bRefresh : BOOL -> "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 PdhEnumObjectsA "PdhEnumObjectsA" str, str, sptr, sptr, int, int
; res = PdhEnumObjectsA(szDataSource, szMachineName, varptr(mszObjectList), varptr(pcchBufferSize), dwDetailLevel, bRefresh)
; szDataSource : LPCSTR optional -> "str"
; szMachineName : LPCSTR optional -> "str"
; mszObjectList : LPSTR optional, out -> "sptr"
; pcchBufferSize : DWORD* in/out -> "sptr"
; dwDetailLevel : PERF_DETAIL -> "int"
; bRefresh : BOOL -> "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 PdhEnumObjectsA(LPCSTR szDataSource, LPCSTR szMachineName, LPSTR mszObjectList, DWORD* pcchBufferSize, PERF_DETAIL dwDetailLevel, BOOL bRefresh)
#uselib "pdh.dll"
#cfunc global PdhEnumObjectsA "PdhEnumObjectsA" str, str, var, var, int, int
; res = PdhEnumObjectsA(szDataSource, szMachineName, mszObjectList, pcchBufferSize, dwDetailLevel, bRefresh)
; szDataSource : LPCSTR optional -> "str"
; szMachineName : LPCSTR optional -> "str"
; mszObjectList : LPSTR optional, out -> "var"
; pcchBufferSize : DWORD* in/out -> "var"
; dwDetailLevel : PERF_DETAIL -> "int"
; bRefresh : BOOL -> "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 PdhEnumObjectsA(LPCSTR szDataSource, LPCSTR szMachineName, LPSTR mszObjectList, DWORD* pcchBufferSize, PERF_DETAIL dwDetailLevel, BOOL bRefresh)
#uselib "pdh.dll"
#cfunc global PdhEnumObjectsA "PdhEnumObjectsA" str, str, intptr, intptr, int, int
; res = PdhEnumObjectsA(szDataSource, szMachineName, varptr(mszObjectList), varptr(pcchBufferSize), dwDetailLevel, bRefresh)
; szDataSource : LPCSTR optional -> "str"
; szMachineName : LPCSTR optional -> "str"
; mszObjectList : LPSTR optional, out -> "intptr"
; pcchBufferSize : DWORD* in/out -> "intptr"
; dwDetailLevel : PERF_DETAIL -> "int"
; bRefresh : BOOL -> "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")
	procPdhEnumObjectsA = pdh.NewProc("PdhEnumObjectsA")
)

// szDataSource (LPCSTR optional), szMachineName (LPCSTR optional), mszObjectList (LPSTR optional, out), pcchBufferSize (DWORD* in/out), dwDetailLevel (PERF_DETAIL), bRefresh (BOOL)
r1, _, err := procPdhEnumObjectsA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szDataSource))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szMachineName))),
	uintptr(mszObjectList),
	uintptr(pcchBufferSize),
	uintptr(dwDetailLevel),
	uintptr(bRefresh),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PdhEnumObjectsA(
  szDataSource: PAnsiChar;   // LPCSTR optional
  szMachineName: PAnsiChar;   // LPCSTR optional
  mszObjectList: PAnsiChar;   // LPSTR optional, out
  pcchBufferSize: Pointer;   // DWORD* in/out
  dwDetailLevel: DWORD;   // PERF_DETAIL
  bRefresh: BOOL   // BOOL
): DWORD; stdcall;
  external 'pdh.dll' name 'PdhEnumObjectsA';

result := DllCall("pdh\PdhEnumObjectsA"
    , "AStr", szDataSource   ; LPCSTR optional
    , "AStr", szMachineName   ; LPCSTR optional
    , "Ptr", mszObjectList   ; LPSTR optional, out
    , "Ptr", pcchBufferSize   ; DWORD* in/out
    , "UInt", dwDetailLevel   ; PERF_DETAIL
    , "Int", bRefresh   ; BOOL
    , "UInt")   ; return: DWORD

●PdhEnumObjectsA(szDataSource, szMachineName, mszObjectList, pcchBufferSize, dwDetailLevel, bRefresh) = DLL("pdh.dll", "dword PdhEnumObjectsA(char*, char*, char*, void*, dword, bool)")
# 呼び出し: PdhEnumObjectsA(szDataSource, szMachineName, mszObjectList, pcchBufferSize, dwDetailLevel, bRefresh)
# szDataSource : LPCSTR optional -> "char*"
# szMachineName : LPCSTR optional -> "char*"
# mszObjectList : LPSTR optional, out -> "char*"
# pcchBufferSize : DWORD* in/out -> "void*"
# dwDetailLevel : PERF_DETAIL -> "dword"
# bRefresh : BOOL -> "bool"
# 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)。