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TdhGetEventInformation

関数

イベントのメタデータやスキーマ情報を取得する。

DLLTDH.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

DWORD TdhGetEventInformation(
    EVENT_RECORD* Event,
    DWORD TdhContextCount,
    TDH_CONTEXT* TdhContext,   // optional
    TRACE_EVENT_INFO* Buffer,   // optional
    DWORD* BufferSize
);

パラメーター

名前	型	方向	説明
Event	EVENT_RECORD*	in	メタデータを取得する対象のEVENT_RECORD。
TdhContextCount	DWORD	in	TdhContext配列の要素数。
TdhContext	TDH_CONTEXT*	inoptional	デコードに使う追加コンテキスト情報の配列(TDH_CONTEXT)。NULL可。
Buffer	TRACE_EVENT_INFO*	outoptional	取得したイベント情報を受け取るTRACE_EVENT_INFO構造体。
BufferSize	DWORD*	inout	入力でバッファサイズ、出力で必要サイズを受け取るポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD TdhGetEventInformation(
    EVENT_RECORD* Event,
    DWORD TdhContextCount,
    TDH_CONTEXT* TdhContext,   // optional
    TRACE_EVENT_INFO* Buffer,   // optional
    DWORD* BufferSize
);

[DllImport("TDH.dll", ExactSpelling = true)]
static extern uint TdhGetEventInformation(
    IntPtr Event,   // EVENT_RECORD*
    uint TdhContextCount,   // DWORD
    IntPtr TdhContext,   // TDH_CONTEXT* optional
    IntPtr Buffer,   // TRACE_EVENT_INFO* optional, out
    ref uint BufferSize   // DWORD* in/out
);

<DllImport("TDH.dll", ExactSpelling:=True)>
Public Shared Function TdhGetEventInformation(
    [Event] As IntPtr,   ' EVENT_RECORD*
    TdhContextCount As UInteger,   ' DWORD
    TdhContext As IntPtr,   ' TDH_CONTEXT* optional
    Buffer As IntPtr,   ' TRACE_EVENT_INFO* optional, out
    ByRef BufferSize As UInteger   ' DWORD* in/out
) As UInteger
End Function

' Event : EVENT_RECORD*
' TdhContextCount : DWORD
' TdhContext : TDH_CONTEXT* optional
' Buffer : TRACE_EVENT_INFO* optional, out
' BufferSize : DWORD* in/out
Declare PtrSafe Function TdhGetEventInformation Lib "tdh" ( _
    ByVal Event As LongPtr, _
    ByVal TdhContextCount As Long, _
    ByVal TdhContext As LongPtr, _
    ByVal Buffer As LongPtr, _
    ByRef BufferSize 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

TdhGetEventInformation = ctypes.windll.tdh.TdhGetEventInformation
TdhGetEventInformation.restype = wintypes.DWORD
TdhGetEventInformation.argtypes = [
    ctypes.c_void_p,  # Event : EVENT_RECORD*
    wintypes.DWORD,  # TdhContextCount : DWORD
    ctypes.c_void_p,  # TdhContext : TDH_CONTEXT* optional
    ctypes.c_void_p,  # Buffer : TRACE_EVENT_INFO* optional, out
    ctypes.POINTER(wintypes.DWORD),  # BufferSize : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('TDH.dll')
TdhGetEventInformation = Fiddle::Function.new(
  lib['TdhGetEventInformation'],
  [
    Fiddle::TYPE_VOIDP,  # Event : EVENT_RECORD*
    -Fiddle::TYPE_INT,  # TdhContextCount : DWORD
    Fiddle::TYPE_VOIDP,  # TdhContext : TDH_CONTEXT* optional
    Fiddle::TYPE_VOIDP,  # Buffer : TRACE_EVENT_INFO* optional, out
    Fiddle::TYPE_VOIDP,  # BufferSize : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "tdh")]
extern "system" {
    fn TdhGetEventInformation(
        Event: *mut EVENT_RECORD,  // EVENT_RECORD*
        TdhContextCount: u32,  // DWORD
        TdhContext: *mut TDH_CONTEXT,  // TDH_CONTEXT* optional
        Buffer: *mut TRACE_EVENT_INFO,  // TRACE_EVENT_INFO* optional, out
        BufferSize: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("TDH.dll")]
public static extern uint TdhGetEventInformation(IntPtr Event, uint TdhContextCount, IntPtr TdhContext, IntPtr Buffer, ref uint BufferSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'TDH_TdhGetEventInformation' -Namespace Win32 -PassThru
# $api::TdhGetEventInformation(Event, TdhContextCount, TdhContext, Buffer, BufferSize)

#uselib "TDH.dll"
#func global TdhGetEventInformation "TdhGetEventInformation" sptr, sptr, sptr, sptr, sptr
; TdhGetEventInformation varptr(Event), TdhContextCount, varptr(TdhContext), varptr(Buffer), varptr(BufferSize)   ; 戻り値は stat
; Event : EVENT_RECORD* -> "sptr"
; TdhContextCount : DWORD -> "sptr"
; TdhContext : TDH_CONTEXT* optional -> "sptr"
; Buffer : TRACE_EVENT_INFO* optional, out -> "sptr"
; BufferSize : DWORD* in/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 "TDH.dll"
#cfunc global TdhGetEventInformation "TdhGetEventInformation" var, int, var, var, var
; res = TdhGetEventInformation(Event, TdhContextCount, TdhContext, Buffer, BufferSize)
; Event : EVENT_RECORD* -> "var"
; TdhContextCount : DWORD -> "int"
; TdhContext : TDH_CONTEXT* optional -> "var"
; Buffer : TRACE_EVENT_INFO* optional, out -> "var"
; BufferSize : DWORD* in/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 "TDH.dll"
#cfunc global TdhGetEventInformation "TdhGetEventInformation" sptr, int, sptr, sptr, sptr
; res = TdhGetEventInformation(varptr(Event), TdhContextCount, varptr(TdhContext), varptr(Buffer), varptr(BufferSize))
; Event : EVENT_RECORD* -> "sptr"
; TdhContextCount : DWORD -> "int"
; TdhContext : TDH_CONTEXT* optional -> "sptr"
; Buffer : TRACE_EVENT_INFO* optional, out -> "sptr"
; BufferSize : DWORD* in/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:

; DWORD TdhGetEventInformation(EVENT_RECORD* Event, DWORD TdhContextCount, TDH_CONTEXT* TdhContext, TRACE_EVENT_INFO* Buffer, DWORD* BufferSize)
#uselib "TDH.dll"
#cfunc global TdhGetEventInformation "TdhGetEventInformation" var, int, var, var, var
; res = TdhGetEventInformation(Event, TdhContextCount, TdhContext, Buffer, BufferSize)
; Event : EVENT_RECORD* -> "var"
; TdhContextCount : DWORD -> "int"
; TdhContext : TDH_CONTEXT* optional -> "var"
; Buffer : TRACE_EVENT_INFO* optional, out -> "var"
; BufferSize : DWORD* in/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 TdhGetEventInformation(EVENT_RECORD* Event, DWORD TdhContextCount, TDH_CONTEXT* TdhContext, TRACE_EVENT_INFO* Buffer, DWORD* BufferSize)
#uselib "TDH.dll"
#cfunc global TdhGetEventInformation "TdhGetEventInformation" intptr, int, intptr, intptr, intptr
; res = TdhGetEventInformation(varptr(Event), TdhContextCount, varptr(TdhContext), varptr(Buffer), varptr(BufferSize))
; Event : EVENT_RECORD* -> "intptr"
; TdhContextCount : DWORD -> "int"
; TdhContext : TDH_CONTEXT* optional -> "intptr"
; Buffer : TRACE_EVENT_INFO* optional, out -> "intptr"
; BufferSize : DWORD* in/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 (
	tdh = windows.NewLazySystemDLL("TDH.dll")
	procTdhGetEventInformation = tdh.NewProc("TdhGetEventInformation")
)

// Event (EVENT_RECORD*), TdhContextCount (DWORD), TdhContext (TDH_CONTEXT* optional), Buffer (TRACE_EVENT_INFO* optional, out), BufferSize (DWORD* in/out)
r1, _, err := procTdhGetEventInformation.Call(
	uintptr(Event),
	uintptr(TdhContextCount),
	uintptr(TdhContext),
	uintptr(Buffer),
	uintptr(BufferSize),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function TdhGetEventInformation(
  Event: Pointer;   // EVENT_RECORD*
  TdhContextCount: DWORD;   // DWORD
  TdhContext: Pointer;   // TDH_CONTEXT* optional
  Buffer: Pointer;   // TRACE_EVENT_INFO* optional, out
  BufferSize: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'TDH.dll' name 'TdhGetEventInformation';

result := DllCall("TDH\TdhGetEventInformation"
    , "Ptr", Event   ; EVENT_RECORD*
    , "UInt", TdhContextCount   ; DWORD
    , "Ptr", TdhContext   ; TDH_CONTEXT* optional
    , "Ptr", Buffer   ; TRACE_EVENT_INFO* optional, out
    , "Ptr", BufferSize   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●TdhGetEventInformation(Event, TdhContextCount, TdhContext, Buffer, BufferSize) = DLL("TDH.dll", "dword TdhGetEventInformation(void*, dword, void*, void*, void*)")
# 呼び出し: TdhGetEventInformation(Event, TdhContextCount, TdhContext, Buffer, BufferSize)
# Event : EVENT_RECORD* -> "void*"
# TdhContextCount : DWORD -> "dword"
# TdhContext : TDH_CONTEXT* optional -> "void*"
# Buffer : TRACE_EVENT_INFO* optional, out -> "void*"
# BufferSize : DWORD* in/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)。