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2026-06-10

创建散列读句柄 - DmaScatterCreate ​

函数简介 ​

创建散列读句柄，用于批量读取多个内存地址的数据，提高读取效率。(高级版功能,普通版无法使用)

接口名称 ​

DmaScatterCreate

DLL调用 ​

c
int64_t OLA_CALL_TYPE DmaScatterCreate(int64_t instance, int64_t deviceId, int32_t pid);

参数说明 ​

参数名类型说明
instance长整数型OLAPlug对象的指针，由 CreateCOLAPlugInterFace 接口生成。
deviceId长整数型设备ID
pid整数型进程 PID

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.DmaScatterCreate(0, 1234);
csharp
using OLAPlug;

var ola = new OLAPlugServer();
long handle = ola.DmaScatterCreate(0, 1234);
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
handle = ola.DmaScatterCreate(0, 1234)
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
long handle = ola.DmaScatterCreate(0, 1234);
cpp
var ola = com("OlaPlug.OlaSoft")
var handle = ola.DmaScatterCreate(0, 1234)
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
handle = ola.DmaScatterCreate(0, 1234)
text
.局部变量 ola, OLAPlug
ola.创建 ()
handle ＝ ola.DmaScatterCreate(0, 1234)
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var handle = ola.DmaScatterCreate(0, 1234);
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
长整数 handle = ola.DmaScatterCreate(0, 1234)
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.DmaScatterCreate(0, 1234);

原生 DLL 调用 ​

cpp
DmaScatterCreate(instance, 0, 1234);
csharp
using System.Runtime.InteropServices;
using System.Text;

[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int DmaScatterCreate(long ola, int deviceId, int pid);

DmaScatterCreate(instance, 0, 1234);
python
from ctypes import CDLL, c_int, c_int64, create_string_buffer

ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
ola.DmaScatterCreate(instance, 0, 1234)

返回值 ​

长整数型：成功返回散列句柄 (>0)，失败返回 0。