ホーム › System.Js › JsGetRuntimeMemoryLimit

JsGetRuntimeMemoryLimit

関数

ランタイムのメモリ使用量上限を取得する。

DLLchakra.dll呼出規約winapi

シグネチャ

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

JsErrorCode JsGetRuntimeMemoryLimit(
    void* runtime,
    UINT_PTR* memoryLimit
);

パラメーター

名前	型	方向
runtime	void*	in
memoryLimit	UINT_PTR*	out

戻り値の型: JsErrorCode

各言語での呼び出し定義

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

JsErrorCode JsGetRuntimeMemoryLimit(
    void* runtime,
    UINT_PTR* memoryLimit
);

[DllImport("chakra.dll", ExactSpelling = true)]
static extern uint JsGetRuntimeMemoryLimit(
    IntPtr runtime,   // void*
    out UIntPtr memoryLimit   // UINT_PTR* out
);

<DllImport("chakra.dll", ExactSpelling:=True)>
Public Shared Function JsGetRuntimeMemoryLimit(
    runtime As IntPtr,   ' void*
    <Out> ByRef memoryLimit As UIntPtr   ' UINT_PTR* out
) As UInteger
End Function

' runtime : void*
' memoryLimit : UINT_PTR* out
Declare PtrSafe Function JsGetRuntimeMemoryLimit Lib "chakra" ( _
    ByVal runtime As LongPtr, _
    ByRef memoryLimit 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

JsGetRuntimeMemoryLimit = ctypes.windll.chakra.JsGetRuntimeMemoryLimit
JsGetRuntimeMemoryLimit.restype = wintypes.DWORD
JsGetRuntimeMemoryLimit.argtypes = [
    ctypes.POINTER(None),  # runtime : void*
    ctypes.POINTER(ctypes.c_size_t),  # memoryLimit : UINT_PTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('chakra.dll')
JsGetRuntimeMemoryLimit = Fiddle::Function.new(
  lib['JsGetRuntimeMemoryLimit'],
  [
    Fiddle::TYPE_VOIDP,  # runtime : void*
    Fiddle::TYPE_VOIDP,  # memoryLimit : UINT_PTR* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "chakra")]
extern "system" {
    fn JsGetRuntimeMemoryLimit(
        runtime: *mut (),  // void*
        memoryLimit: *mut usize  // UINT_PTR* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("chakra.dll")]
public static extern uint JsGetRuntimeMemoryLimit(IntPtr runtime, out UIntPtr memoryLimit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'chakra_JsGetRuntimeMemoryLimit' -Namespace Win32 -PassThru
# $api::JsGetRuntimeMemoryLimit(runtime, memoryLimit)

#uselib "chakra.dll"
#func global JsGetRuntimeMemoryLimit "JsGetRuntimeMemoryLimit" sptr, sptr
; JsGetRuntimeMemoryLimit runtime, varptr(memoryLimit)   ; 戻り値は stat
; runtime : void* -> "sptr"
; memoryLimit : UINT_PTR* 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 "chakra.dll"
#cfunc global JsGetRuntimeMemoryLimit "JsGetRuntimeMemoryLimit" sptr, var
; res = JsGetRuntimeMemoryLimit(runtime, memoryLimit)
; runtime : void* -> "sptr"
; memoryLimit : UINT_PTR* 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 "chakra.dll"
#cfunc global JsGetRuntimeMemoryLimit "JsGetRuntimeMemoryLimit" sptr, sptr
; res = JsGetRuntimeMemoryLimit(runtime, varptr(memoryLimit))
; runtime : void* -> "sptr"
; memoryLimit : UINT_PTR* 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:

; JsErrorCode JsGetRuntimeMemoryLimit(void* runtime, UINT_PTR* memoryLimit)
#uselib "chakra.dll"
#cfunc global JsGetRuntimeMemoryLimit "JsGetRuntimeMemoryLimit" intptr, var
; res = JsGetRuntimeMemoryLimit(runtime, memoryLimit)
; runtime : void* -> "intptr"
; memoryLimit : UINT_PTR* 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。; JsErrorCode JsGetRuntimeMemoryLimit(void* runtime, UINT_PTR* memoryLimit)
#uselib "chakra.dll"
#cfunc global JsGetRuntimeMemoryLimit "JsGetRuntimeMemoryLimit" intptr, intptr
; res = JsGetRuntimeMemoryLimit(runtime, varptr(memoryLimit))
; runtime : void* -> "intptr"
; memoryLimit : UINT_PTR* 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 (
	chakra = windows.NewLazySystemDLL("chakra.dll")
	procJsGetRuntimeMemoryLimit = chakra.NewProc("JsGetRuntimeMemoryLimit")
)

// runtime (void*), memoryLimit (UINT_PTR* out)
r1, _, err := procJsGetRuntimeMemoryLimit.Call(
	uintptr(runtime),
	uintptr(memoryLimit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // JsErrorCode

function JsGetRuntimeMemoryLimit(
  runtime: Pointer;   // void*
  memoryLimit: Pointer   // UINT_PTR* out
): DWORD; stdcall;
  external 'chakra.dll' name 'JsGetRuntimeMemoryLimit';

result := DllCall("chakra\JsGetRuntimeMemoryLimit"
    , "Ptr", runtime   ; void*
    , "Ptr", memoryLimit   ; UINT_PTR* out
    , "UInt")   ; return: JsErrorCode

●JsGetRuntimeMemoryLimit(runtime, memoryLimit) = DLL("chakra.dll", "dword JsGetRuntimeMemoryLimit(void*, void*)")
# 呼び出し: JsGetRuntimeMemoryLimit(runtime, memoryLimit)
# runtime : void* -> "void*"
# memoryLimit : UINT_PTR* 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)。