Dining Philosophers Problem III

This post ends the mini-series about the dining philosophers problem by Andre Adrian. Today, he applies powerful locks and semaphores.

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Views: 3396

Dining Philosophers Problem II

In the last post "Dining Philosophers Problem I", Andre Adrian started his analysis of the classical dining philosophers' problem. Today, he uses atomics, mutexes, and locks.

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Views: 2796

Dining Philosophers Problem I

At Christmas time, I had a few nice discussions with Andre Adrian. He solved the classical dining philosopher's problem in various ways using modern C++. I'm convinced him to write an article about this classic synchronization issue, and I'm happy to publish it in three consecutive posts.

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Views: 9091

Sleep and Wait

The new time library is an important component of the threading interface. As well, threads, locks, and condition variables understanding time. All four have in common that they can sleep, wait or block until a time point or for a time duration.

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Tags: time
Views: 61068

The Three Clocks

A clock consists of a starting point and a time tick. C++ offers with std::chrono::system_clock, std::chrono::steady_clock, and std::chrono::high_resolution_clock three clocks.

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Tags: time
Views: 156538

Time Duration

Time duration is the difference between two time points. It will be measured in time ticks.

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Tags: time
Views: 42781

Time Point

The time point is defined by the starting point (epoch) and the additional time duration. It consists of two components, clock and time duration.

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Tags: time
Views: 30628

The Time Library

A blog dealing with multithreading in modern C++ but not writing about the new time library is incomplete. Especially because I often used the time library in my posts to measure the performance of shortcode snippets. Therefore, I give in this post an overview of the components of the time library: time point, time duration, and clock. I will write additional posts about each of these three components.

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Tags: time
Views: 12231

My Conclusion: Summation of a Vector in three Variants

After I've calculated in three different ways the sum of a std::vector I want to draw my conclusions.

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Views: 33745

Multithreaded: Summation with Minimal Synchronization

Until now I've used two strategies for the summation of a std::vector. First I did the whole math in one thread (Single Threaded: Summation of a vector); second multiple threads shared the same variable for the result (Multithreaded: Summation of a vector). In particular, the second strategy was extremely naive. In this post, I will apply my knowledge of both posts. My goal is it that the thread will perform their summation as independent from each other as possible and therefore reduce the synchronization overhead. 

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Views: 20168

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