ホーム › Storage.FileSystem › BuildIoRingReadFileScatter

BuildIoRingReadFileScatter

関数

I/Oリングに複数バッファへ分散読み取りする操作を構築する。

DLLKERNEL32.dll呼出規約winapi

シグネチャ

// KERNEL32.dll
#include <windows.h>

HRESULT BuildIoRingReadFileScatter(
    HIORING ioRing,
    IORING_HANDLE_REF fileRef,
    DWORD segmentCount,
    FILE_SEGMENT_ELEMENT* segmentArray,
    DWORD numberOfBytesToRead,
    ULONGLONG fileOffset,
    UINT_PTR userData,
    IORING_SQE_FLAGS sqeFlags
);

パラメーター

名前	型	方向
ioRing	HIORING	in
fileRef	IORING_HANDLE_REF	in
segmentCount	DWORD	in
segmentArray	FILE_SEGMENT_ELEMENT*	in
numberOfBytesToRead	DWORD	in
fileOffset	ULONGLONG	in
userData	UINT_PTR	in
sqeFlags	IORING_SQE_FLAGS	in

戻り値の型: HRESULT

各言語での呼び出し定義

// KERNEL32.dll
#include <windows.h>

HRESULT BuildIoRingReadFileScatter(
    HIORING ioRing,
    IORING_HANDLE_REF fileRef,
    DWORD segmentCount,
    FILE_SEGMENT_ELEMENT* segmentArray,
    DWORD numberOfBytesToRead,
    ULONGLONG fileOffset,
    UINT_PTR userData,
    IORING_SQE_FLAGS sqeFlags
);

[DllImport("KERNEL32.dll", ExactSpelling = true)]
static extern int BuildIoRingReadFileScatter(
    IntPtr ioRing,   // HIORING
    IORING_HANDLE_REF fileRef,   // IORING_HANDLE_REF
    uint segmentCount,   // DWORD
    IntPtr segmentArray,   // FILE_SEGMENT_ELEMENT*
    uint numberOfBytesToRead,   // DWORD
    ulong fileOffset,   // ULONGLONG
    UIntPtr userData,   // UINT_PTR
    int sqeFlags   // IORING_SQE_FLAGS
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function BuildIoRingReadFileScatter(
    ioRing As IntPtr,   ' HIORING
    fileRef As IORING_HANDLE_REF,   ' IORING_HANDLE_REF
    segmentCount As UInteger,   ' DWORD
    segmentArray As IntPtr,   ' FILE_SEGMENT_ELEMENT*
    numberOfBytesToRead As UInteger,   ' DWORD
    fileOffset As ULong,   ' ULONGLONG
    userData As UIntPtr,   ' UINT_PTR
    sqeFlags As Integer   ' IORING_SQE_FLAGS
) As Integer
End Function

' ioRing : HIORING
' fileRef : IORING_HANDLE_REF
' segmentCount : DWORD
' segmentArray : FILE_SEGMENT_ELEMENT*
' numberOfBytesToRead : DWORD
' fileOffset : ULONGLONG
' userData : UINT_PTR
' sqeFlags : IORING_SQE_FLAGS
Declare PtrSafe Function BuildIoRingReadFileScatter Lib "kernel32" ( _
    ByVal ioRing As LongPtr, _
    ByVal fileRef As LongPtr, _
    ByVal segmentCount As Long, _
    ByVal segmentArray As LongPtr, _
    ByVal numberOfBytesToRead As Long, _
    ByVal fileOffset As LongLong, _
    ByVal userData As LongPtr, _
    ByVal sqeFlags 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

BuildIoRingReadFileScatter = ctypes.windll.kernel32.BuildIoRingReadFileScatter
BuildIoRingReadFileScatter.restype = ctypes.c_int
BuildIoRingReadFileScatter.argtypes = [
    wintypes.HANDLE,  # ioRing : HIORING
    IORING_HANDLE_REF,  # fileRef : IORING_HANDLE_REF
    wintypes.DWORD,  # segmentCount : DWORD
    ctypes.c_void_p,  # segmentArray : FILE_SEGMENT_ELEMENT*
    wintypes.DWORD,  # numberOfBytesToRead : DWORD
    ctypes.c_ulonglong,  # fileOffset : ULONGLONG
    ctypes.c_size_t,  # userData : UINT_PTR
    ctypes.c_int,  # sqeFlags : IORING_SQE_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
BuildIoRingReadFileScatter = Fiddle::Function.new(
  lib['BuildIoRingReadFileScatter'],
  [
    Fiddle::TYPE_VOIDP,  # ioRing : HIORING
    Fiddle::TYPE_VOIDP,  # fileRef : IORING_HANDLE_REF
    -Fiddle::TYPE_INT,  # segmentCount : DWORD
    Fiddle::TYPE_VOIDP,  # segmentArray : FILE_SEGMENT_ELEMENT*
    -Fiddle::TYPE_INT,  # numberOfBytesToRead : DWORD
    -Fiddle::TYPE_LONG_LONG,  # fileOffset : ULONGLONG
    Fiddle::TYPE_UINTPTR_T,  # userData : UINT_PTR
    Fiddle::TYPE_INT,  # sqeFlags : IORING_SQE_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn BuildIoRingReadFileScatter(
        ioRing: *mut core::ffi::c_void,  // HIORING
        fileRef: IORING_HANDLE_REF,  // IORING_HANDLE_REF
        segmentCount: u32,  // DWORD
        segmentArray: *mut FILE_SEGMENT_ELEMENT,  // FILE_SEGMENT_ELEMENT*
        numberOfBytesToRead: u32,  // DWORD
        fileOffset: u64,  // ULONGLONG
        userData: usize,  // UINT_PTR
        sqeFlags: i32  // IORING_SQE_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll")]
public static extern int BuildIoRingReadFileScatter(IntPtr ioRing, IORING_HANDLE_REF fileRef, uint segmentCount, IntPtr segmentArray, uint numberOfBytesToRead, ulong fileOffset, UIntPtr userData, int sqeFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_BuildIoRingReadFileScatter' -Namespace Win32 -PassThru
# $api::BuildIoRingReadFileScatter(ioRing, fileRef, segmentCount, segmentArray, numberOfBytesToRead, fileOffset, userData, sqeFlags)

#uselib "KERNEL32.dll"
#func global BuildIoRingReadFileScatter "BuildIoRingReadFileScatter" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; BuildIoRingReadFileScatter ioRing, fileRef, segmentCount, varptr(segmentArray), numberOfBytesToRead, fileOffset, userData, sqeFlags   ; 戻り値は stat
; ioRing : HIORING -> "sptr"
; fileRef : IORING_HANDLE_REF -> "sptr"
; segmentCount : DWORD -> "sptr"
; segmentArray : FILE_SEGMENT_ELEMENT* -> "sptr"
; numberOfBytesToRead : DWORD -> "sptr"
; fileOffset : ULONGLONG -> "sptr"
; userData : UINT_PTR -> "sptr"
; sqeFlags : IORING_SQE_FLAGS -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 "KERNEL32.dll"
#cfunc global BuildIoRingReadFileScatter "BuildIoRingReadFileScatter" sptr, int, int, var, int, int64, sptr, int
; res = BuildIoRingReadFileScatter(ioRing, fileRef, segmentCount, segmentArray, numberOfBytesToRead, fileOffset, userData, sqeFlags)
; ioRing : HIORING -> "sptr"
; fileRef : IORING_HANDLE_REF -> "int"
; segmentCount : DWORD -> "int"
; segmentArray : FILE_SEGMENT_ELEMENT* -> "var"
; numberOfBytesToRead : DWORD -> "int"
; fileOffset : ULONGLONG -> "int64"
; userData : UINT_PTR -> "sptr"
; sqeFlags : IORING_SQE_FLAGS -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。#uselib "KERNEL32.dll"
#cfunc global BuildIoRingReadFileScatter "BuildIoRingReadFileScatter" sptr, int, int, sptr, int, int64, sptr, int
; res = BuildIoRingReadFileScatter(ioRing, fileRef, segmentCount, varptr(segmentArray), numberOfBytesToRead, fileOffset, userData, sqeFlags)
; ioRing : HIORING -> "sptr"
; fileRef : IORING_HANDLE_REF -> "int"
; segmentCount : DWORD -> "int"
; segmentArray : FILE_SEGMENT_ELEMENT* -> "sptr"
; numberOfBytesToRead : DWORD -> "int"
; fileOffset : ULONGLONG -> "int64"
; userData : UINT_PTR -> "sptr"
; sqeFlags : IORING_SQE_FLAGS -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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))。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

出力引数:

; HRESULT BuildIoRingReadFileScatter(HIORING ioRing, IORING_HANDLE_REF fileRef, DWORD segmentCount, FILE_SEGMENT_ELEMENT* segmentArray, DWORD numberOfBytesToRead, ULONGLONG fileOffset, UINT_PTR userData, IORING_SQE_FLAGS sqeFlags)
#uselib "KERNEL32.dll"
#cfunc global BuildIoRingReadFileScatter "BuildIoRingReadFileScatter" intptr, int, int, var, int, int64, intptr, int
; res = BuildIoRingReadFileScatter(ioRing, fileRef, segmentCount, segmentArray, numberOfBytesToRead, fileOffset, userData, sqeFlags)
; ioRing : HIORING -> "intptr"
; fileRef : IORING_HANDLE_REF -> "int"
; segmentCount : DWORD -> "int"
; segmentArray : FILE_SEGMENT_ELEMENT* -> "var"
; numberOfBytesToRead : DWORD -> "int"
; fileOffset : ULONGLONG -> "int64"
; userData : UINT_PTR -> "intptr"
; sqeFlags : IORING_SQE_FLAGS -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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。; HRESULT BuildIoRingReadFileScatter(HIORING ioRing, IORING_HANDLE_REF fileRef, DWORD segmentCount, FILE_SEGMENT_ELEMENT* segmentArray, DWORD numberOfBytesToRead, ULONGLONG fileOffset, UINT_PTR userData, IORING_SQE_FLAGS sqeFlags)
#uselib "KERNEL32.dll"
#cfunc global BuildIoRingReadFileScatter "BuildIoRingReadFileScatter" intptr, int, int, intptr, int, int64, intptr, int
; res = BuildIoRingReadFileScatter(ioRing, fileRef, segmentCount, varptr(segmentArray), numberOfBytesToRead, fileOffset, userData, sqeFlags)
; ioRing : HIORING -> "intptr"
; fileRef : IORING_HANDLE_REF -> "int"
; segmentCount : DWORD -> "int"
; segmentArray : FILE_SEGMENT_ELEMENT* -> "intptr"
; numberOfBytesToRead : DWORD -> "int"
; fileOffset : ULONGLONG -> "int64"
; userData : UINT_PTR -> "intptr"
; sqeFlags : IORING_SQE_FLAGS -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procBuildIoRingReadFileScatter = kernel32.NewProc("BuildIoRingReadFileScatter")
)

// ioRing (HIORING), fileRef (IORING_HANDLE_REF), segmentCount (DWORD), segmentArray (FILE_SEGMENT_ELEMENT*), numberOfBytesToRead (DWORD), fileOffset (ULONGLONG), userData (UINT_PTR), sqeFlags (IORING_SQE_FLAGS)
r1, _, err := procBuildIoRingReadFileScatter.Call(
	uintptr(ioRing),
	uintptr(fileRef),
	uintptr(segmentCount),
	uintptr(segmentArray),
	uintptr(numberOfBytesToRead),
	uintptr(fileOffset),
	uintptr(userData),
	uintptr(sqeFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function BuildIoRingReadFileScatter(
  ioRing: THandle;   // HIORING
  fileRef: IORING_HANDLE_REF;   // IORING_HANDLE_REF
  segmentCount: DWORD;   // DWORD
  segmentArray: Pointer;   // FILE_SEGMENT_ELEMENT*
  numberOfBytesToRead: DWORD;   // DWORD
  fileOffset: UInt64;   // ULONGLONG
  userData: NativeUInt;   // UINT_PTR
  sqeFlags: Integer   // IORING_SQE_FLAGS
): Integer; stdcall;
  external 'KERNEL32.dll' name 'BuildIoRingReadFileScatter';

result := DllCall("KERNEL32\BuildIoRingReadFileScatter"
    , "Ptr", ioRing   ; HIORING
    , "Ptr", fileRef   ; IORING_HANDLE_REF
    , "UInt", segmentCount   ; DWORD
    , "Ptr", segmentArray   ; FILE_SEGMENT_ELEMENT*
    , "UInt", numberOfBytesToRead   ; DWORD
    , "Int64", fileOffset   ; ULONGLONG
    , "UPtr", userData   ; UINT_PTR
    , "Int", sqeFlags   ; IORING_SQE_FLAGS
    , "Int")   ; return: HRESULT

●BuildIoRingReadFileScatter(ioRing, fileRef, segmentCount, segmentArray, numberOfBytesToRead, fileOffset, userData, sqeFlags) = DLL("KERNEL32.dll", "int BuildIoRingReadFileScatter(void*, void*, dword, void*, dword, qword, int, int)")
# 呼び出し: BuildIoRingReadFileScatter(ioRing, fileRef, segmentCount, segmentArray, numberOfBytesToRead, fileOffset, userData, sqeFlags)
# ioRing : HIORING -> "void*"
# fileRef : IORING_HANDLE_REF -> "void*"
# segmentCount : DWORD -> "dword"
# segmentArray : FILE_SEGMENT_ELEMENT* -> "void*"
# numberOfBytesToRead : DWORD -> "dword"
# fileOffset : ULONGLONG -> "qword"
# userData : UINT_PTR -> "int"
# sqeFlags : IORING_SQE_FLAGS -> "int"
# 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)。