Thread Synchronization with Condition Variables or Tasks

In case you use promise and future to synchronize threads, they have much in common with condition variables. But most of the time, tasks are the better choice.

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Views: 62510

The Special Futures

The parent of a thread has to take care of their child. The parent can wait until his child is done or detach himself from his child. But that is not really new. But that will not hold for std::async. The big charm of std::async is that the parent has not taken care of his child.

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Tags: async, tasks
Views: 28658

Promise and Future

With std::promise and std::future, you have full control over the task.

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Tags: tasks
Views: 184609

Asynchronous Callable Wrappers

std::packaged_task enables you to write a simple wrapper for a callable, which you can invoke later.

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Tags: tasks
Views: 38059

Asynchronous Function Calls

std:.async feels like an asynchronous function call. Under the hood std::async is a task. One, which is extremely easy to use.

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Tags: async, tasks
Views: 124522

Tasks

Tasks were one of the latest additions to the C++11 standard. They give you a better abstraction than threads. In the general case, they should be your first choice. 

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Tags: tasks
Views: 47060

Condition Variables

Condition variables allow us to synchronize threads via notifications. So, you can implement workflows like sender/receiver or producer/consumer. In such a workflow, the receiver is waiting for the sender's notification. If the receiver gets the notification, it continues its work.

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Views: 101471

Thread-Local Data

By using the keyword thread_local, you define the thread local data. Thread-local can easily be explained in a few words.

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Views: 39957

Thread-Safe Initialization of Data

In case the data is not modified when shared between threads, the story is simple. The data has only to be initialized in the thread safe way. It is not necessary to use an expensive lock for each access.

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Views: 92458

Reader-Writer Locks

With C++14 came reader-writer locks. The idea is straightforward and promising. Arbitrary reading threads can access the critical region at the same time, but only one thread is allowed to write.

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Tags: lock
Views: 77161

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