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STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR

構造体
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サイズx64: 16 バイト / x86: 16 バイト

サイズ=各フィールドのバイト数(x64/x86 で異なる場合は x64/x86 と併記)。x64/x86 列=フィールドのバイトオフセット(HSPで dupptr / lpoke / wpoke 等に使用)。

フィールド

フィールド型サイズx64x86説明
VersionDWORD4+0+0構造体のバージョン番号。
SizeDWORD4+4+4この構造体のサイズをバイト単位で示す。
LunMaxIoCountDWORD4+8+8LUNあたりの最大同時I/O数。
AdapterMaxIoCountDWORD4+12+12アダプタあたりの最大同時I/O数。

各言語での定義

#include <windows.h>

// STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR  (x64 16 / x86 16 バイト)
typedef struct STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR {
    DWORD Version;
    DWORD Size;
    DWORD LunMaxIoCount;
    DWORD AdapterMaxIoCount;
} STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR;
using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR
{
    public uint Version;
    public uint Size;
    public uint LunMaxIoCount;
    public uint AdapterMaxIoCount;
}
Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR
    Public Version As UInteger
    Public Size As UInteger
    Public LunMaxIoCount As UInteger
    Public AdapterMaxIoCount As UInteger
End Structure
import ctypes
from ctypes import wintypes

class STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR(ctypes.Structure):
    _fields_ = [
        ("Version", wintypes.DWORD),
        ("Size", wintypes.DWORD),
        ("LunMaxIoCount", wintypes.DWORD),
        ("AdapterMaxIoCount", wintypes.DWORD),
    ]
#[repr(C)]
pub struct STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR {
    pub Version: u32,
    pub Size: u32,
    pub LunMaxIoCount: u32,
    pub AdapterMaxIoCount: u32,
}
import "golang.org/x/sys/windows"

type STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR struct {
	Version uint32
	Size uint32
	LunMaxIoCount uint32
	AdapterMaxIoCount uint32
}
type
  STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR = record
    Version: DWORD;
    Size: DWORD;
    LunMaxIoCount: DWORD;
    AdapterMaxIoCount: DWORD;
  end;
const STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR = extern struct {
    Version: u32,
    Size: u32,
    LunMaxIoCount: u32,
    AdapterMaxIoCount: u32,
};
type
  STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR {.bycopy.} = object
    Version: uint32
    Size: uint32
    LunMaxIoCount: uint32
    AdapterMaxIoCount: uint32
struct STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR
{
    uint Version;
    uint Size;
    uint LunMaxIoCount;
    uint AdapterMaxIoCount;
}

HSP用 定義

HSP3.7/3.8 は構造体機能が無いため4byte整数配列(dim)+peek/poke で操作(32/64bitでサイズ・位置が異なる場合はタブで分割)。IronHSP は NSTRUCT(#defstruct/stdim/->)で32/64bit共通。

; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x64 レイアウト)
; STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR サイズ: 16 バイト(x64)
dim st, 4    ; 4byte整数×4(構造体サイズ 16 / 4 切り上げ)
; Version : DWORD (+0, 4byte)  st.0 = 値  /  値 = st.0   (lpoke/lpeek も可)
; Size : DWORD (+4, 4byte)  st.1 = 値  /  値 = st.1   (lpoke/lpeek も可)
; LunMaxIoCount : DWORD (+8, 4byte)  st.2 = 値  /  値 = st.2   (lpoke/lpeek も可)
; AdapterMaxIoCount : DWORD (+12, 4byte)  st.3 = 値  /  値 = st.3   (lpoke/lpeek も可)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。
; IronHSP は NSTRUCT(構造体)をサポート。32bit/64bit どちらでも同じコードで動作します。
#defstruct global STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR
    #field int Version
    #field int Size
    #field int LunMaxIoCount
    #field int AdapterMaxIoCount
#endstruct

stdim st, STORAGE_DEVICE_IO_CAPABILITY_DESCRIPTOR        ; NSTRUCT 変数を確保
st->Version = 100
mes "Version=" + st->Version