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JetOSSnapshotFreezeA

関数
スナップショット作成のためESEインスタンスの書き込みを凍結する(ANSI版)。
DLLESENT.dll文字セットANSI (-A)呼出規約winapi

シグネチャ

// ESENT.dll  (ANSI / -A)
#include <windows.h>

INT JetOSSnapshotFreezeA(
    JET_OSSNAPID snapId,
    DWORD* pcInstanceInfo,
    JET_INSTANCE_INFO_A** paInstanceInfo,
    DWORD grbit
);

パラメーター

名前方向説明
snapIdJET_OSSNAPIDin対象のスナップショットセッション識別子。
pcInstanceInfoDWORD*out返されるインスタンス情報配列の要素数を受け取る出力ポインタ。
paInstanceInfoJET_INSTANCE_INFO_A**out凍結された各インスタンスの情報配列を受け取る出力ポインタ(ANSI)。
grbitDWORDin予約済み。通常は0を指定するフラグ引数。

戻り値の型: INT

各言語での呼び出し定義

// ESENT.dll  (ANSI / -A)
#include <windows.h>

INT JetOSSnapshotFreezeA(
    JET_OSSNAPID snapId,
    DWORD* pcInstanceInfo,
    JET_INSTANCE_INFO_A** paInstanceInfo,
    DWORD grbit
);
[DllImport("ESENT.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern int JetOSSnapshotFreezeA(
    UIntPtr snapId,   // JET_OSSNAPID
    out uint pcInstanceInfo,   // DWORD* out
    IntPtr paInstanceInfo,   // JET_INSTANCE_INFO_A** out
    uint grbit   // DWORD
);
<DllImport("ESENT.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function JetOSSnapshotFreezeA(
    snapId As UIntPtr,   ' JET_OSSNAPID
    <Out> ByRef pcInstanceInfo As UInteger,   ' DWORD* out
    paInstanceInfo As IntPtr,   ' JET_INSTANCE_INFO_A** out
    grbit As UInteger   ' DWORD
) As Integer
End Function
' snapId : JET_OSSNAPID
' pcInstanceInfo : DWORD* out
' paInstanceInfo : JET_INSTANCE_INFO_A** out
' grbit : DWORD
Declare PtrSafe Function JetOSSnapshotFreezeA Lib "esent" ( _
    ByVal snapId As LongPtr, _
    ByRef pcInstanceInfo As Long, _
    ByVal paInstanceInfo As LongPtr, _
    ByVal grbit 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

JetOSSnapshotFreezeA = ctypes.windll.esent.JetOSSnapshotFreezeA
JetOSSnapshotFreezeA.restype = ctypes.c_int
JetOSSnapshotFreezeA.argtypes = [
    ctypes.c_size_t,  # snapId : JET_OSSNAPID
    ctypes.POINTER(wintypes.DWORD),  # pcInstanceInfo : DWORD* out
    ctypes.c_void_p,  # paInstanceInfo : JET_INSTANCE_INFO_A** out
    wintypes.DWORD,  # grbit : DWORD
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetOSSnapshotFreezeA = Fiddle::Function.new(
  lib['JetOSSnapshotFreezeA'],
  [
    Fiddle::TYPE_UINTPTR_T,  # snapId : JET_OSSNAPID
    Fiddle::TYPE_VOIDP,  # pcInstanceInfo : DWORD* out
    Fiddle::TYPE_VOIDP,  # paInstanceInfo : JET_INSTANCE_INFO_A** out
    -Fiddle::TYPE_INT,  # grbit : DWORD
  ],
  Fiddle::TYPE_INT)
#[link(name = "esent")]
extern "system" {
    fn JetOSSnapshotFreezeA(
        snapId: usize,  // JET_OSSNAPID
        pcInstanceInfo: *mut u32,  // DWORD* out
        paInstanceInfo: *mut *mut JET_INSTANCE_INFO_A,  // JET_INSTANCE_INFO_A** out
        grbit: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Ansi)]
public static extern int JetOSSnapshotFreezeA(UIntPtr snapId, out uint pcInstanceInfo, IntPtr paInstanceInfo, uint grbit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetOSSnapshotFreezeA' -Namespace Win32 -PassThru
# $api::JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
#uselib "ESENT.dll"
#func global JetOSSnapshotFreezeA "JetOSSnapshotFreezeA" sptr, sptr, sptr, sptr
; JetOSSnapshotFreezeA snapId, varptr(pcInstanceInfo), varptr(paInstanceInfo), grbit   ; 戻り値は stat
; snapId : JET_OSSNAPID -> "sptr"
; pcInstanceInfo : DWORD* out -> "sptr"
; paInstanceInfo : JET_INSTANCE_INFO_A** out -> "sptr"
; grbit : DWORD -> "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 "ESENT.dll"
#cfunc global JetOSSnapshotFreezeA "JetOSSnapshotFreezeA" sptr, var, var, int
; res = JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
; snapId : JET_OSSNAPID -> "sptr"
; pcInstanceInfo : DWORD* out -> "var"
; paInstanceInfo : JET_INSTANCE_INFO_A** out -> "var"
; grbit : DWORD -> "int"
; ※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。
出力引数:
; INT JetOSSnapshotFreezeA(JET_OSSNAPID snapId, DWORD* pcInstanceInfo, JET_INSTANCE_INFO_A** paInstanceInfo, DWORD grbit)
#uselib "ESENT.dll"
#cfunc global JetOSSnapshotFreezeA "JetOSSnapshotFreezeA" intptr, var, var, int
; res = JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
; snapId : JET_OSSNAPID -> "intptr"
; pcInstanceInfo : DWORD* out -> "var"
; paInstanceInfo : JET_INSTANCE_INFO_A** out -> "var"
; grbit : DWORD -> "int"
; ※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 (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetOSSnapshotFreezeA = esent.NewProc("JetOSSnapshotFreezeA")
)

// snapId (JET_OSSNAPID), pcInstanceInfo (DWORD* out), paInstanceInfo (JET_INSTANCE_INFO_A** out), grbit (DWORD)
r1, _, err := procJetOSSnapshotFreezeA.Call(
	uintptr(snapId),
	uintptr(pcInstanceInfo),
	uintptr(paInstanceInfo),
	uintptr(grbit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT
function JetOSSnapshotFreezeA(
  snapId: NativeUInt;   // JET_OSSNAPID
  pcInstanceInfo: Pointer;   // DWORD* out
  paInstanceInfo: Pointer;   // JET_INSTANCE_INFO_A** out
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetOSSnapshotFreezeA';
result := DllCall("ESENT\JetOSSnapshotFreezeA"
    , "UPtr", snapId   ; JET_OSSNAPID
    , "Ptr", pcInstanceInfo   ; DWORD* out
    , "Ptr", paInstanceInfo   ; JET_INSTANCE_INFO_A** out
    , "UInt", grbit   ; DWORD
    , "Int")   ; return: INT
●JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit) = DLL("ESENT.dll", "int JetOSSnapshotFreezeA(int, void*, void*, dword)")
# 呼び出し: JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
# snapId : JET_OSSNAPID -> "int"
# pcInstanceInfo : DWORD* out -> "void*"
# paInstanceInfo : JET_INSTANCE_INFO_A** out -> "void*"
# grbit : DWORD -> "dword"
# 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 "esent" fn JetOSSnapshotFreezeA(
    snapId: usize, // JET_OSSNAPID
    pcInstanceInfo: [*c]u32, // DWORD* out
    paInstanceInfo: [*c][*c]JET_INSTANCE_INFO_A, // JET_INSTANCE_INFO_A** out
    grbit: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;
proc JetOSSnapshotFreezeA(
    snapId: uint,  # JET_OSSNAPID
    pcInstanceInfo: ptr uint32,  # DWORD* out
    paInstanceInfo: ptr JET_INSTANCE_INFO_A,  # JET_INSTANCE_INFO_A** out
    grbit: uint32  # DWORD
): int32 {.importc: "JetOSSnapshotFreezeA", stdcall, dynlib: "ESENT.dll".}
pragma(lib, "esent");
extern(Windows)
int JetOSSnapshotFreezeA(
    size_t snapId,   // JET_OSSNAPID
    uint* pcInstanceInfo,   // DWORD* out
    JET_INSTANCE_INFO_A** paInstanceInfo,   // JET_INSTANCE_INFO_A** out
    uint grbit   // DWORD
);
ccall((:JetOSSnapshotFreezeA, "ESENT.dll"), stdcall, Int32,
      (Csize_t, Ptr{UInt32}, Ptr{JET_INSTANCE_INFO_A}, UInt32),
      snapId, pcInstanceInfo, paInstanceInfo, grbit)
# snapId : JET_OSSNAPID -> Csize_t
# pcInstanceInfo : DWORD* out -> Ptr{UInt32}
# paInstanceInfo : JET_INSTANCE_INFO_A** out -> Ptr{JET_INSTANCE_INFO_A}
# grbit : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t JetOSSnapshotFreezeA(
    uintptr_t snapId,
    uint32_t* pcInstanceInfo,
    void* paInstanceInfo,
    uint32_t grbit);
]]
local esent = ffi.load("esent")
-- esent.JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
-- snapId : JET_OSSNAPID
-- pcInstanceInfo : DWORD* out
-- paInstanceInfo : JET_INSTANCE_INFO_A** out
-- grbit : DWORD
-- 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('ESENT.dll');
const JetOSSnapshotFreezeA = lib.func('__stdcall', 'JetOSSnapshotFreezeA', 'int32_t', ['uintptr_t', 'uint32_t *', 'void *', 'uint32_t']);
// JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
// snapId : JET_OSSNAPID -> 'uintptr_t'
// pcInstanceInfo : DWORD* out -> 'uint32_t *'
// paInstanceInfo : JET_INSTANCE_INFO_A** out -> 'void *'
// grbit : DWORD -> 'uint32_t'
// 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("ESENT.dll", {
  JetOSSnapshotFreezeA: { parameters: ["usize", "pointer", "pointer", "u32"], result: "i32" },
});
// lib.symbols.JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit)
// snapId : JET_OSSNAPID -> "usize"
// pcInstanceInfo : DWORD* out -> "pointer"
// paInstanceInfo : JET_INSTANCE_INFO_A** out -> "pointer"
// grbit : DWORD -> "u32"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
int32_t JetOSSnapshotFreezeA(
    size_t snapId,
    uint32_t* pcInstanceInfo,
    void* paInstanceInfo,
    uint32_t grbit);
C, "ESENT.dll");
// $ffi->JetOSSnapshotFreezeA(snapId, pcInstanceInfo, paInstanceInfo, grbit);
// snapId : JET_OSSNAPID
// pcInstanceInfo : DWORD* out
// paInstanceInfo : JET_INSTANCE_INFO_A** out
// grbit : DWORD
// 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 Esent extends StdCallLibrary {
    Esent INSTANCE = Native.load("esent", Esent.class, W32APIOptions.ASCII_OPTIONS);
    int JetOSSnapshotFreezeA(
        long snapId,   // JET_OSSNAPID
        IntByReference pcInstanceInfo,   // DWORD* out
        Pointer paInstanceInfo,   // JET_INSTANCE_INFO_A** out
        int grbit   // DWORD
    );
}
@[Link("esent")]
lib LibESENT
  fun JetOSSnapshotFreezeA = JetOSSnapshotFreezeA(
    snapId : LibC::SizeT,   # JET_OSSNAPID
    pcInstanceInfo : UInt32*,   # DWORD* out
    paInstanceInfo : JET_INSTANCE_INFO_A**,   # JET_INSTANCE_INFO_A** out
    grbit : UInt32   # DWORD
  ) : 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 JetOSSnapshotFreezeANative = Int32 Function(UintPtr, Pointer<Uint32>, Pointer<Void>, Uint32);
typedef JetOSSnapshotFreezeADart = int Function(int, Pointer<Uint32>, Pointer<Void>, int);
final JetOSSnapshotFreezeA = DynamicLibrary.open('ESENT.dll')
    .lookupFunction<JetOSSnapshotFreezeANative, JetOSSnapshotFreezeADart>('JetOSSnapshotFreezeA');
// snapId : JET_OSSNAPID -> UintPtr
// pcInstanceInfo : DWORD* out -> Pointer<Uint32>
// paInstanceInfo : JET_INSTANCE_INFO_A** out -> Pointer<Void>
// grbit : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function JetOSSnapshotFreezeA(
  snapId: NativeUInt;   // JET_OSSNAPID
  pcInstanceInfo: Pointer;   // DWORD* out
  paInstanceInfo: Pointer;   // JET_INSTANCE_INFO_A** out
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetOSSnapshotFreezeA';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "JetOSSnapshotFreezeA"
  c_JetOSSnapshotFreezeA :: CUIntPtr -> Ptr Word32 -> Ptr () -> Word32 -> IO Int32
-- snapId : JET_OSSNAPID -> CUIntPtr
-- pcInstanceInfo : DWORD* out -> Ptr Word32
-- paInstanceInfo : JET_INSTANCE_INFO_A** out -> Ptr ()
-- grbit : DWORD -> Word32
-- 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 jetossnapshotfreezea =
  foreign "JetOSSnapshotFreezeA"
    (size_t @-> (ptr uint32_t) @-> (ptr void) @-> uint32_t @-> returning int32_t)
(* snapId : JET_OSSNAPID -> size_t *)
(* pcInstanceInfo : DWORD* out -> (ptr uint32_t) *)
(* paInstanceInfo : JET_INSTANCE_INFO_A** out -> (ptr void) *)
(* grbit : DWORD -> uint32_t *)
(* 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 esent (t "ESENT.dll"))
(cffi:use-foreign-library esent)

(cffi:defcfun ("JetOSSnapshotFreezeA" jet-ossnapshot-freeze-a :convention :stdcall) :int32
  (snap-id :uint64)   ; JET_OSSNAPID
  (pc-instance-info :pointer)   ; DWORD* out
  (pa-instance-info :pointer)   ; JET_INSTANCE_INFO_A** out
  (grbit :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $JetOSSnapshotFreezeA = Win32::API::More->new('ESENT',
    'int JetOSSnapshotFreezeA(WPARAM snapId, LPVOID pcInstanceInfo, LPVOID paInstanceInfo, DWORD grbit)');
# my $ret = $JetOSSnapshotFreezeA->Call($snapId, $pcInstanceInfo, $paInstanceInfo, $grbit);
# snapId : JET_OSSNAPID -> WPARAM
# pcInstanceInfo : DWORD* out -> LPVOID
# paInstanceInfo : JET_INSTANCE_INFO_A** out -> LPVOID
# grbit : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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