C++ Concurrency in Action by Anthony Williams PDF

By Anthony Williams

Tips to create multitrheating code in c++ .

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Extra info for C++ Concurrency in Action

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Since this would primarily be aimed at ensuring threads are completed before a scope is exited, I named this class scoped_thread. 6, along with a simple example. 6: scoped_thread and example usage class scoped_thread { ©Manning Publications Co. 3, but the new thread is passed in directly to the scoped_thread (#1), rather than having to create a separate named variable for it. When the initial thread reaches the end of f (#2), the scoped_thread object is destroyed and then joins with (#3) the thread supplied to the constructor (#4).

However, that still begs the question — what changes need to be made? In the simplest case, we could just declare that top() will throw an exception if there's not actually any elements in the stack when it's called. Though this directly addresses this issue, it makes for more cumbersome programming, as now we need to be able to catch an exception, even if the call to empty() returned false. This essentially makes the call to empty() completely redundant. If you look closely at the snippet above, there's also potential for another race condition, but this time between the call to top() (#2) and the call to pop() (#3).

Also, the requirements on the iterators are slightly more stringent: they must be at least forward-iterators, whereas std::accumulate can work with singlepass input-iterators, and T must be default-constructible so that we can create the results vector. These sorts of requirement changes are common with parallel algorithms: by their very nature they are different in some manner in order to make them parallel, and this has ©Manning Publications Co. Com 35 consequences on the results and requirements.

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C++ Concurrency in Action by Anthony Williams


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