PerfEnumerateCounterSetInstances

// ADVAPI32.dll
#include <windows.h>

DWORD PerfEnumerateCounterSetInstances(
    LPCWSTR szMachine,   // optional
    const GUID* pCounterSetId,
    PERF_INSTANCE_HEADER* pInstances,   // optional
    DWORD cbInstances,
    DWORD* pcbInstancesActual
);

<DllImport("ADVAPI32.dll", ExactSpelling:=True)>
Public Shared Function PerfEnumerateCounterSetInstances(
    <MarshalAs(UnmanagedType.LPWStr)> szMachine As String,   ' LPCWSTR optional
    ByRef pCounterSetId As Guid,   ' GUID*
    pInstances As IntPtr,   ' PERF_INSTANCE_HEADER* optional, out
    cbInstances As UInteger,   ' DWORD
    <Out> ByRef pcbInstancesActual As UInteger   ' DWORD* out
) As UInteger
End Function

' szMachine : LPCWSTR optional
' pCounterSetId : GUID*
' pInstances : PERF_INSTANCE_HEADER* optional, out
' cbInstances : DWORD
' pcbInstancesActual : DWORD* out
Declare PtrSafe Function PerfEnumerateCounterSetInstances Lib "advapi32" ( _
    ByVal szMachine As LongPtr, _
    ByVal pCounterSetId As LongPtr, _
    ByVal pInstances As LongPtr, _
    ByVal cbInstances As Long, _
    ByRef pcbInstancesActual 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

PerfEnumerateCounterSetInstances = ctypes.windll.advapi32.PerfEnumerateCounterSetInstances
PerfEnumerateCounterSetInstances.restype = wintypes.DWORD
PerfEnumerateCounterSetInstances.argtypes = [
    wintypes.LPCWSTR,  # szMachine : LPCWSTR optional
    ctypes.c_void_p,  # pCounterSetId : GUID*
    ctypes.c_void_p,  # pInstances : PERF_INSTANCE_HEADER* optional, out
    wintypes.DWORD,  # cbInstances : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcbInstancesActual : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
PerfEnumerateCounterSetInstances = Fiddle::Function.new(
  lib['PerfEnumerateCounterSetInstances'],
  [
    Fiddle::TYPE_VOIDP,  # szMachine : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pCounterSetId : GUID*
    Fiddle::TYPE_VOIDP,  # pInstances : PERF_INSTANCE_HEADER* optional, out
    -Fiddle::TYPE_INT,  # cbInstances : DWORD
    Fiddle::TYPE_VOIDP,  # pcbInstancesActual : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn PerfEnumerateCounterSetInstances(
        szMachine: *const u16,  // LPCWSTR optional
        pCounterSetId: *const GUID,  // GUID*
        pInstances: *mut PERF_INSTANCE_HEADER,  // PERF_INSTANCE_HEADER* optional, out
        cbInstances: u32,  // DWORD
        pcbInstancesActual: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ADVAPI32.dll")]
public static extern uint PerfEnumerateCounterSetInstances([MarshalAs(UnmanagedType.LPWStr)] string szMachine, ref Guid pCounterSetId, IntPtr pInstances, uint cbInstances, out uint pcbInstancesActual);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_PerfEnumerateCounterSetInstances' -Namespace Win32 -PassThru
# $api::PerfEnumerateCounterSetInstances(szMachine, pCounterSetId, pInstances, cbInstances, pcbInstancesActual)

#uselib "ADVAPI32.dll"
#func global PerfEnumerateCounterSetInstances "PerfEnumerateCounterSetInstances" sptr, sptr, sptr, sptr, sptr
; PerfEnumerateCounterSetInstances szMachine, varptr(pCounterSetId), varptr(pInstances), cbInstances, varptr(pcbInstancesActual)   ; 戻り値は stat
; szMachine : LPCWSTR optional -> "sptr"
; pCounterSetId : GUID* -> "sptr"
; pInstances : PERF_INSTANCE_HEADER* optional, out -> "sptr"
; cbInstances : DWORD -> "sptr"
; pcbInstancesActual : DWORD* 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。

#uselib "ADVAPI32.dll"
#cfunc global PerfEnumerateCounterSetInstances "PerfEnumerateCounterSetInstances" wstr, var, var, int, var
; res = PerfEnumerateCounterSetInstances(szMachine, pCounterSetId, pInstances, cbInstances, pcbInstancesActual)
; szMachine : LPCWSTR optional -> "wstr"
; pCounterSetId : GUID* -> "var"
; pInstances : PERF_INSTANCE_HEADER* optional, out -> "var"
; cbInstances : DWORD -> "int"
; pcbInstancesActual : DWORD* 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。

; DWORD PerfEnumerateCounterSetInstances(LPCWSTR szMachine, GUID* pCounterSetId, PERF_INSTANCE_HEADER* pInstances, DWORD cbInstances, DWORD* pcbInstancesActual)
#uselib "ADVAPI32.dll"
#cfunc global PerfEnumerateCounterSetInstances "PerfEnumerateCounterSetInstances" wstr, var, var, int, var
; res = PerfEnumerateCounterSetInstances(szMachine, pCounterSetId, pInstances, cbInstances, pcbInstancesActual)
; szMachine : LPCWSTR optional -> "wstr"
; pCounterSetId : GUID* -> "var"
; pInstances : PERF_INSTANCE_HEADER* optional, out -> "var"
; cbInstances : DWORD -> "int"
; pcbInstancesActual : DWORD* 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。

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procPerfEnumerateCounterSetInstances = advapi32.NewProc("PerfEnumerateCounterSetInstances")
)

// szMachine (LPCWSTR optional), pCounterSetId (GUID*), pInstances (PERF_INSTANCE_HEADER* optional, out), cbInstances (DWORD), pcbInstancesActual (DWORD* out)
r1, _, err := procPerfEnumerateCounterSetInstances.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szMachine))),
	uintptr(pCounterSetId),
	uintptr(pInstances),
	uintptr(cbInstances),
	uintptr(pcbInstancesActual),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PerfEnumerateCounterSetInstances(
  szMachine: PWideChar;   // LPCWSTR optional
  pCounterSetId: PGUID;   // GUID*
  pInstances: Pointer;   // PERF_INSTANCE_HEADER* optional, out
  cbInstances: DWORD;   // DWORD
  pcbInstancesActual: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'ADVAPI32.dll' name 'PerfEnumerateCounterSetInstances';

result := DllCall("ADVAPI32\PerfEnumerateCounterSetInstances"
    , "WStr", szMachine   ; LPCWSTR optional
    , "Ptr", pCounterSetId   ; GUID*
    , "Ptr", pInstances   ; PERF_INSTANCE_HEADER* optional, out
    , "UInt", cbInstances   ; DWORD
    , "Ptr", pcbInstancesActual   ; DWORD* out
    , "UInt")   ; return: DWORD

●PerfEnumerateCounterSetInstances(szMachine, pCounterSetId, pInstances, cbInstances, pcbInstancesActual) = DLL("ADVAPI32.dll", "dword PerfEnumerateCounterSetInstances(char*, void*, void*, dword, void*)")
# 呼び出し: PerfEnumerateCounterSetInstances(szMachine, pCounterSetId, pInstances, cbInstances, pcbInstancesActual)
# szMachine : LPCWSTR optional -> "char*"
# pCounterSetId : GUID* -> "void*"
# pInstances : PERF_INSTANCE_HEADER* optional, out -> "void*"
# cbInstances : DWORD -> "dword"
# pcbInstancesActual : DWORD* 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)。