线程结束时在主线程上回调
Callback on main thread when a thread finishes
我需要在工作线程完成时通知主线程。当我接受一个委托并在它完成时在另一个线程上执行它时,它会在该线程上执行,这不是我想要的。由于我有一些限制,我也无法检查它是否完成(Unity 编辑器中的 'Update' 不是每一帧都调用)。我还有其他选择吗?
您可以使用async/await..
async void MyFunc()
{
await Task.Run(() => { /* your work in thread */ });
//Your work is finished at this point
}
还有一个好处,你可以用 try-catch 块包围它,并以一种聪明的方式捕获你工作中可能发生的异常。
//This is a helper coroutine
IEnumerable RunOffMainThread(Action toRun, Action callback) {
bool done = false;
new Thread(()=>{
toRun();
done = true;
}).Start();
while (!done)
yield return null;
callback();
}
//This is the method you call to start it
void DoSomethingOffMainThread() {
StartCoroutine(RunOffMainThread(ToRun, OnFinished));
}
//This is the method that does the work
void ToRun() {
//Do something slow here
}
//This is the method that's called when finished
void OnFinished() {
//off main thread code finished, back on main thread now
}
我需要在工作线程完成时通知主线程。当我接受一个委托并在它完成时在另一个线程上执行它时,它会在该线程上执行,这不是我想要的。由于我有一些限制,我也无法检查它是否完成(Unity 编辑器中的 'Update' 不是每一帧都调用)。我还有其他选择吗?
您可以使用async/await..
async void MyFunc()
{
await Task.Run(() => { /* your work in thread */ });
//Your work is finished at this point
}
还有一个好处,你可以用 try-catch 块包围它,并以一种聪明的方式捕获你工作中可能发生的异常。
//This is a helper coroutine
IEnumerable RunOffMainThread(Action toRun, Action callback) {
bool done = false;
new Thread(()=>{
toRun();
done = true;
}).Start();
while (!done)
yield return null;
callback();
}
//This is the method you call to start it
void DoSomethingOffMainThread() {
StartCoroutine(RunOffMainThread(ToRun, OnFinished));
}
//This is the method that does the work
void ToRun() {
//Do something slow here
}
//This is the method that's called when finished
void OnFinished() {
//off main thread code finished, back on main thread now
}