Task.WaitAll() vs. Task.WhenAll(): When Should You Use Each?

task.waitall () and task.whenall () differences

When dealing with asynchronous tasks, distinguish

and

is very important, which is directly related to the effective management of concurrentness and thread utilization. Task.WaitAll() Task.WhenAll() task.waitall (): blocking execution

will block the current thread until all the tasks in the array or collection are completed. If the task runs long for a long time, this may lead to performance problems, because threads will maintain a state of occupation throughout the process.

task.whenall (): Non -blocking execution Task.WaitAll()

Task[] tasks = { task1, task2, task3 };
Task.WaitAll(tasks); // 阻塞当前线程

In contrast,

Return a task, which represents the completion of all tasks provided in the array or collection provided. However, it does not block the current thread. Instead, it allows your asynchronous method to continue execution without waiting for all tasks to complete.

Use , you can avoid blocking the current thread, and at the same time, you can still ensure that all tasks are finalized. The follow -up content requires payment to view.

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