什么相当于 dart 中的 JAVA ThreadLocal

发布于12月27日

static ThreadLocal<Uint8List> threadBuffer = new ThreadLocal<Uint8List>() {
@Override
  public byte[] initialValue() {
    return new byte[512];
 }
};

在Java中，ThreadLocal是一个提供线程局部变量的类.这些变量是特定于特定线程的变量，不会在其他线程之间共享.

那么，与DART中的代码片段相当的是什么呢？

import 'dart:isolate'; import 'dart:typed_data'; Uint8List threadBuffer = Uint8List(512); void main() async { ReceivePort receivePort = ReceivePort(); Isolate.spawn((port) async { for (int i = 0; i < threadBuffer.length; i++) { threadBuffer[i] = i; } Isolate.exit(port, threadBuffer); }, receivePort.sendPort); Isolate.spawn((port) async { for (int i = 0; i < threadBuffer.length; i++) { threadBuffer[i] = -i; } Isolate.exit(port, threadBuffer); }, receivePort.sendPort); await for (final response in receivePort.take(2)) { print(response); } print(threadBuffer); }

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什么相当于 dart 中的 JAVA ThreadLocal

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