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QOSQueryFlow

関数

QoSフローのプロパティや状態を問い合わせる。

DLLqwave.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

BOOL QOSQueryFlow(
    HANDLE QOSHandle,
    DWORD FlowId,
    QOS_QUERY_FLOW Operation,
    DWORD* Size,
    void* Buffer,
    DWORD Flags,   // optional
    OVERLAPPED* Overlapped   // optional
);

パラメーター

名前	型	方向	説明
QOSHandle	HANDLE	in	QOSCreateHandleで取得したQoSハンドル。
FlowId	DWORD	in	問い合わせる対象のQoSフローのID。
Operation	QOS_QUERY_FLOW	in	取得する情報の種類を表す列挙値(帯域推定等)。
Size	DWORD*	inout	入力でBufferのバイト数、出力で必要/使用バイト数を格納するポインタ。
Buffer	void*	out	取得した情報を格納する出力バッファへのポインタ。
Flags	DWORD	inoptional	予約。0を指定する。
Overlapped	OVERLAPPED*	outoptional	非同期操作に使用するOVERLAPPED構造体へのポインタ。同期実行時はNULL可。

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL QOSQueryFlow(
    HANDLE QOSHandle,
    DWORD FlowId,
    QOS_QUERY_FLOW Operation,
    DWORD* Size,
    void* Buffer,
    DWORD Flags,   // optional
    OVERLAPPED* Overlapped   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("qwave.dll", ExactSpelling = true)]
static extern bool QOSQueryFlow(
    IntPtr QOSHandle,   // HANDLE
    uint FlowId,   // DWORD
    int Operation,   // QOS_QUERY_FLOW
    ref uint Size,   // DWORD* in/out
    IntPtr Buffer,   // void* out
    uint Flags,   // DWORD optional
    IntPtr Overlapped   // OVERLAPPED* optional, out
);

<DllImport("qwave.dll", ExactSpelling:=True)>
Public Shared Function QOSQueryFlow(
    QOSHandle As IntPtr,   ' HANDLE
    FlowId As UInteger,   ' DWORD
    Operation As Integer,   ' QOS_QUERY_FLOW
    ByRef Size As UInteger,   ' DWORD* in/out
    Buffer As IntPtr,   ' void* out
    Flags As UInteger,   ' DWORD optional
    Overlapped As IntPtr   ' OVERLAPPED* optional, out
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' QOSHandle : HANDLE
' FlowId : DWORD
' Operation : QOS_QUERY_FLOW
' Size : DWORD* in/out
' Buffer : void* out
' Flags : DWORD optional
' Overlapped : OVERLAPPED* optional, out
Declare PtrSafe Function QOSQueryFlow Lib "qwave" ( _
    ByVal QOSHandle As LongPtr, _
    ByVal FlowId As Long, _
    ByVal Operation As Long, _
    ByRef Size As Long, _
    ByVal Buffer As LongPtr, _
    ByVal Flags As Long, _
    ByVal Overlapped 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

QOSQueryFlow = ctypes.windll.qwave.QOSQueryFlow
QOSQueryFlow.restype = wintypes.BOOL
QOSQueryFlow.argtypes = [
    wintypes.HANDLE,  # QOSHandle : HANDLE
    wintypes.DWORD,  # FlowId : DWORD
    ctypes.c_int,  # Operation : QOS_QUERY_FLOW
    ctypes.POINTER(wintypes.DWORD),  # Size : DWORD* in/out
    ctypes.POINTER(None),  # Buffer : void* out
    wintypes.DWORD,  # Flags : DWORD optional
    ctypes.c_void_p,  # Overlapped : OVERLAPPED* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('qwave.dll')
QOSQueryFlow = Fiddle::Function.new(
  lib['QOSQueryFlow'],
  [
    Fiddle::TYPE_VOIDP,  # QOSHandle : HANDLE
    -Fiddle::TYPE_INT,  # FlowId : DWORD
    Fiddle::TYPE_INT,  # Operation : QOS_QUERY_FLOW
    Fiddle::TYPE_VOIDP,  # Size : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # Buffer : void* out
    -Fiddle::TYPE_INT,  # Flags : DWORD optional
    Fiddle::TYPE_VOIDP,  # Overlapped : OVERLAPPED* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "qwave")]
extern "system" {
    fn QOSQueryFlow(
        QOSHandle: *mut core::ffi::c_void,  // HANDLE
        FlowId: u32,  // DWORD
        Operation: i32,  // QOS_QUERY_FLOW
        Size: *mut u32,  // DWORD* in/out
        Buffer: *mut (),  // void* out
        Flags: u32,  // DWORD optional
        Overlapped: *mut OVERLAPPED  // OVERLAPPED* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("qwave.dll")]
public static extern bool QOSQueryFlow(IntPtr QOSHandle, uint FlowId, int Operation, ref uint Size, IntPtr Buffer, uint Flags, IntPtr Overlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'qwave_QOSQueryFlow' -Namespace Win32 -PassThru
# $api::QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped)

#uselib "qwave.dll"
#func global QOSQueryFlow "QOSQueryFlow" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; QOSQueryFlow QOSHandle, FlowId, Operation, varptr(Size), Buffer, Flags, varptr(Overlapped)   ; 戻り値は stat
; QOSHandle : HANDLE -> "sptr"
; FlowId : DWORD -> "sptr"
; Operation : QOS_QUERY_FLOW -> "sptr"
; Size : DWORD* in/out -> "sptr"
; Buffer : void* out -> "sptr"
; Flags : DWORD optional -> "sptr"
; Overlapped : OVERLAPPED* 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 "qwave.dll"
#cfunc global QOSQueryFlow "QOSQueryFlow" sptr, int, int, var, sptr, int, var
; res = QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped)
; QOSHandle : HANDLE -> "sptr"
; FlowId : DWORD -> "int"
; Operation : QOS_QUERY_FLOW -> "int"
; Size : DWORD* in/out -> "var"
; Buffer : void* out -> "sptr"
; Flags : DWORD optional -> "int"
; Overlapped : OVERLAPPED* 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 "qwave.dll"
#cfunc global QOSQueryFlow "QOSQueryFlow" sptr, int, int, sptr, sptr, int, sptr
; res = QOSQueryFlow(QOSHandle, FlowId, Operation, varptr(Size), Buffer, Flags, varptr(Overlapped))
; QOSHandle : HANDLE -> "sptr"
; FlowId : DWORD -> "int"
; Operation : QOS_QUERY_FLOW -> "int"
; Size : DWORD* in/out -> "sptr"
; Buffer : void* out -> "sptr"
; Flags : DWORD optional -> "int"
; Overlapped : OVERLAPPED* 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 QOSQueryFlow(HANDLE QOSHandle, DWORD FlowId, QOS_QUERY_FLOW Operation, DWORD* Size, void* Buffer, DWORD Flags, OVERLAPPED* Overlapped)
#uselib "qwave.dll"
#cfunc global QOSQueryFlow "QOSQueryFlow" intptr, int, int, var, intptr, int, var
; res = QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped)
; QOSHandle : HANDLE -> "intptr"
; FlowId : DWORD -> "int"
; Operation : QOS_QUERY_FLOW -> "int"
; Size : DWORD* in/out -> "var"
; Buffer : void* out -> "intptr"
; Flags : DWORD optional -> "int"
; Overlapped : OVERLAPPED* 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 QOSQueryFlow(HANDLE QOSHandle, DWORD FlowId, QOS_QUERY_FLOW Operation, DWORD* Size, void* Buffer, DWORD Flags, OVERLAPPED* Overlapped)
#uselib "qwave.dll"
#cfunc global QOSQueryFlow "QOSQueryFlow" intptr, int, int, intptr, intptr, int, intptr
; res = QOSQueryFlow(QOSHandle, FlowId, Operation, varptr(Size), Buffer, Flags, varptr(Overlapped))
; QOSHandle : HANDLE -> "intptr"
; FlowId : DWORD -> "int"
; Operation : QOS_QUERY_FLOW -> "int"
; Size : DWORD* in/out -> "intptr"
; Buffer : void* out -> "intptr"
; Flags : DWORD optional -> "int"
; Overlapped : OVERLAPPED* 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 (
	qwave = windows.NewLazySystemDLL("qwave.dll")
	procQOSQueryFlow = qwave.NewProc("QOSQueryFlow")
)

// QOSHandle (HANDLE), FlowId (DWORD), Operation (QOS_QUERY_FLOW), Size (DWORD* in/out), Buffer (void* out), Flags (DWORD optional), Overlapped (OVERLAPPED* optional, out)
r1, _, err := procQOSQueryFlow.Call(
	uintptr(QOSHandle),
	uintptr(FlowId),
	uintptr(Operation),
	uintptr(Size),
	uintptr(Buffer),
	uintptr(Flags),
	uintptr(Overlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function QOSQueryFlow(
  QOSHandle: THandle;   // HANDLE
  FlowId: DWORD;   // DWORD
  Operation: Integer;   // QOS_QUERY_FLOW
  Size: Pointer;   // DWORD* in/out
  Buffer: Pointer;   // void* out
  Flags: DWORD;   // DWORD optional
  Overlapped: Pointer   // OVERLAPPED* optional, out
): BOOL; stdcall;
  external 'qwave.dll' name 'QOSQueryFlow';

result := DllCall("qwave\QOSQueryFlow"
    , "Ptr", QOSHandle   ; HANDLE
    , "UInt", FlowId   ; DWORD
    , "Int", Operation   ; QOS_QUERY_FLOW
    , "Ptr", Size   ; DWORD* in/out
    , "Ptr", Buffer   ; void* out
    , "UInt", Flags   ; DWORD optional
    , "Ptr", Overlapped   ; OVERLAPPED* optional, out
    , "Int")   ; return: BOOL

●QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped) = DLL("qwave.dll", "bool QOSQueryFlow(void*, dword, int, void*, void*, dword, void*)")
# 呼び出し: QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped)
# QOSHandle : HANDLE -> "void*"
# FlowId : DWORD -> "dword"
# Operation : QOS_QUERY_FLOW -> "int"
# Size : DWORD* in/out -> "void*"
# Buffer : void* out -> "void*"
# Flags : DWORD optional -> "dword"
# Overlapped : OVERLAPPED* 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)。

const std = @import("std");

extern "qwave" fn QOSQueryFlow(
    QOSHandle: ?*anyopaque, // HANDLE
    FlowId: u32, // DWORD
    Operation: i32, // QOS_QUERY_FLOW
    Size: [*c]u32, // DWORD* in/out
    Buffer: ?*anyopaque, // void* out
    Flags: u32, // DWORD optional
    Overlapped: [*c]OVERLAPPED // OVERLAPPED* optional, out
) callconv(std.os.windows.WINAPI) i32;

proc QOSQueryFlow(
    QOSHandle: pointer,  # HANDLE
    FlowId: uint32,  # DWORD
    Operation: int32,  # QOS_QUERY_FLOW
    Size: ptr uint32,  # DWORD* in/out
    Buffer: pointer,  # void* out
    Flags: uint32,  # DWORD optional
    Overlapped: ptr OVERLAPPED  # OVERLAPPED* optional, out
): int32 {.importc: "QOSQueryFlow", stdcall, dynlib: "qwave.dll".}

pragma(lib, "qwave");
extern(Windows)
int QOSQueryFlow(
    void* QOSHandle,   // HANDLE
    uint FlowId,   // DWORD
    int Operation,   // QOS_QUERY_FLOW
    uint* Size,   // DWORD* in/out
    void* Buffer,   // void* out
    uint Flags,   // DWORD optional
    OVERLAPPED* Overlapped   // OVERLAPPED* optional, out
);

ccall((:QOSQueryFlow, "qwave.dll"), stdcall, Int32,
      (Ptr{Cvoid}, UInt32, Int32, Ptr{UInt32}, Ptr{Cvoid}, UInt32, Ptr{OVERLAPPED}),
      QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped)
# QOSHandle : HANDLE -> Ptr{Cvoid}
# FlowId : DWORD -> UInt32
# Operation : QOS_QUERY_FLOW -> Int32
# Size : DWORD* in/out -> Ptr{UInt32}
# Buffer : void* out -> Ptr{Cvoid}
# Flags : DWORD optional -> UInt32
# Overlapped : OVERLAPPED* optional, out -> Ptr{OVERLAPPED}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t QOSQueryFlow(
    void* QOSHandle,
    uint32_t FlowId,
    int32_t Operation,
    uint32_t* Size,
    void* Buffer,
    uint32_t Flags,
    void* Overlapped);
]]
local qwave = ffi.load("qwave")
-- qwave.QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped)
-- QOSHandle : HANDLE
-- FlowId : DWORD
-- Operation : QOS_QUERY_FLOW
-- Size : DWORD* in/out
-- Buffer : void* out
-- Flags : DWORD optional
-- Overlapped : OVERLAPPED* optional, out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('qwave.dll');
const QOSQueryFlow = lib.func('__stdcall', 'QOSQueryFlow', 'int32_t', ['void *', 'uint32_t', 'int32_t', 'uint32_t *', 'void *', 'uint32_t', 'void *']);
// QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped)
// QOSHandle : HANDLE -> 'void *'
// FlowId : DWORD -> 'uint32_t'
// Operation : QOS_QUERY_FLOW -> 'int32_t'
// Size : DWORD* in/out -> 'uint32_t *'
// Buffer : void* out -> 'void *'
// Flags : DWORD optional -> 'uint32_t'
// Overlapped : OVERLAPPED* optional, out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("qwave.dll", {
  QOSQueryFlow: { parameters: ["pointer", "u32", "i32", "pointer", "pointer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped)
// QOSHandle : HANDLE -> "pointer"
// FlowId : DWORD -> "u32"
// Operation : QOS_QUERY_FLOW -> "i32"
// Size : DWORD* in/out -> "pointer"
// Buffer : void* out -> "pointer"
// Flags : DWORD optional -> "u32"
// Overlapped : OVERLAPPED* optional, out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t QOSQueryFlow(
    void* QOSHandle,
    uint32_t FlowId,
    int32_t Operation,
    uint32_t* Size,
    void* Buffer,
    uint32_t Flags,
    void* Overlapped);
C, "qwave.dll");
// $ffi->QOSQueryFlow(QOSHandle, FlowId, Operation, Size, Buffer, Flags, Overlapped);
// QOSHandle : HANDLE
// FlowId : DWORD
// Operation : QOS_QUERY_FLOW
// Size : DWORD* in/out
// Buffer : void* out
// Flags : DWORD optional
// Overlapped : OVERLAPPED* optional, out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Qwave extends StdCallLibrary {
    Qwave INSTANCE = Native.load("qwave", Qwave.class);
    boolean QOSQueryFlow(
        Pointer QOSHandle,   // HANDLE
        int FlowId,   // DWORD
        int Operation,   // QOS_QUERY_FLOW
        IntByReference Size,   // DWORD* in/out
        Pointer Buffer,   // void* out
        int Flags,   // DWORD optional
        Pointer Overlapped   // OVERLAPPED* optional, out
    );
}

@[Link("qwave")]
lib Libqwave
  fun QOSQueryFlow = QOSQueryFlow(
    QOSHandle : Void*,   # HANDLE
    FlowId : UInt32,   # DWORD
    Operation : Int32,   # QOS_QUERY_FLOW
    Size : UInt32*,   # DWORD* in/out
    Buffer : Void*,   # void* out
    Flags : UInt32,   # DWORD optional
    Overlapped : OVERLAPPED*   # OVERLAPPED* optional, out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef QOSQueryFlowNative = Int32 Function(Pointer<Void>, Uint32, Int32, Pointer<Uint32>, Pointer<Void>, Uint32, Pointer<Void>);
typedef QOSQueryFlowDart = int Function(Pointer<Void>, int, int, Pointer<Uint32>, Pointer<Void>, int, Pointer<Void>);
final QOSQueryFlow = DynamicLibrary.open('qwave.dll')
    .lookupFunction<QOSQueryFlowNative, QOSQueryFlowDart>('QOSQueryFlow');
// QOSHandle : HANDLE -> Pointer<Void>
// FlowId : DWORD -> Uint32
// Operation : QOS_QUERY_FLOW -> Int32
// Size : DWORD* in/out -> Pointer<Uint32>
// Buffer : void* out -> Pointer<Void>
// Flags : DWORD optional -> Uint32
// Overlapped : OVERLAPPED* optional, out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function QOSQueryFlow(
  QOSHandle: THandle;   // HANDLE
  FlowId: DWORD;   // DWORD
  Operation: Integer;   // QOS_QUERY_FLOW
  Size: Pointer;   // DWORD* in/out
  Buffer: Pointer;   // void* out
  Flags: DWORD;   // DWORD optional
  Overlapped: Pointer   // OVERLAPPED* optional, out
): BOOL; stdcall;
  external 'qwave.dll' name 'QOSQueryFlow';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "QOSQueryFlow"
  c_QOSQueryFlow :: Ptr () -> Word32 -> Int32 -> Ptr Word32 -> Ptr () -> Word32 -> Ptr () -> IO CInt
-- QOSHandle : HANDLE -> Ptr ()
-- FlowId : DWORD -> Word32
-- Operation : QOS_QUERY_FLOW -> Int32
-- Size : DWORD* in/out -> Ptr Word32
-- Buffer : void* out -> Ptr ()
-- Flags : DWORD optional -> Word32
-- Overlapped : OVERLAPPED* optional, out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let qosqueryflow =
  foreign "QOSQueryFlow"
    ((ptr void) @-> uint32_t @-> int32_t @-> (ptr uint32_t) @-> (ptr void) @-> uint32_t @-> (ptr void) @-> returning int32_t)
(* QOSHandle : HANDLE -> (ptr void) *)
(* FlowId : DWORD -> uint32_t *)
(* Operation : QOS_QUERY_FLOW -> int32_t *)
(* Size : DWORD* in/out -> (ptr uint32_t) *)
(* Buffer : void* out -> (ptr void) *)
(* Flags : DWORD optional -> uint32_t *)
(* Overlapped : OVERLAPPED* optional, out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library qwave (t "qwave.dll"))
(cffi:use-foreign-library qwave)

(cffi:defcfun ("QOSQueryFlow" qosquery-flow :convention :stdcall) :int32
  (qoshandle :pointer)   ; HANDLE
  (flow-id :uint32)   ; DWORD
  (operation :int32)   ; QOS_QUERY_FLOW
  (size :pointer)   ; DWORD* in/out
  (buffer :pointer)   ; void* out
  (flags :uint32)   ; DWORD optional
  (overlapped :pointer))   ; OVERLAPPED* optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $QOSQueryFlow = Win32::API::More->new('qwave',
    'BOOL QOSQueryFlow(HANDLE QOSHandle, DWORD FlowId, int Operation, LPVOID Size, LPVOID Buffer, DWORD Flags, LPVOID Overlapped)');
# my $ret = $QOSQueryFlow->Call($QOSHandle, $FlowId, $Operation, $Size, $Buffer, $Flags, $Overlapped);
# QOSHandle : HANDLE -> HANDLE
# FlowId : DWORD -> DWORD
# Operation : QOS_QUERY_FLOW -> int
# Size : DWORD* in/out -> LPVOID
# Buffer : void* out -> LPVOID
# Flags : DWORD optional -> DWORD
# Overlapped : OVERLAPPED* optional, out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

QOSQueryFlow

シグネチャ

パラメーター

各言語での呼び出し定義

関連項目