Modernes C++

This page is the starting point for my blog Modernes C++. A simple overview of my existing and upcoming posts.

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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
Views: 26542

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: 90075

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: 27019

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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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: 65871

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: 54134

Prefer Locks to Mutexes

If the previous post showed something, it's, that you should use mutexes with great care. That's why you should wrap them in a lock.

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Tags: lock, mutex
Views: 111749

The Risks of Mutexes

Usage of mutexes seems extremely simple. There is a critical section in the code, which can only be accessed by a single thread at any point  of time. It's ensured by a mutex m. The calls m.lock() and m.unlock() guarantee this exclusivity. But, the devil is in the details.

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Tags: mutex
Views: 22434

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