Sequential Consistency

The atomics are the base of the C++ memory model. Per default, sequential consistency is applied.

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C++ Memory Model

Since C++11, C++ has a memory model. It is the foundation for multithreading. Without it, multithreading is not well defined. 

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Thread Synchronization with Condition Variables or Tasks

In case you are using  promise and future to synchronize threads, they have a lot in common with condition variables. But most of the time, task are the better choice.

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The Special Futures

The parent of a thread has to take care of its child. The parent can wait, until its child is done or detach itself from its 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 take to care of its child.

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Tags: async, tasks
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Promise and Future

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

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Tags: tasks
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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
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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
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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
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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 the sender's notification. If the receiver gets the notification, it continues its work.

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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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