How to multiply a matrix by a vector using mutex on C ++ Matrix and vector are set randomly

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    How to open a file using a chocolate tube? How to cook soup, if you read "War and Peace"? - VladD
  • @ alishka193, and why with this multiplication (if, of course, the result is already a selected vector) do you need mutex at all? After all, each thread processes independent data (which data can be passed in parameters). - Judging by the wording of the question, I do not think that this is a question of managing a pool of “multiplier” streams. - avp

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For example, something like this:

mutex.lock(); try { // вычисления mutex.unlock(); } catch(...) { mutex.unlock(); throw; }
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    Where is RAII? - KoVadim
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    @Free_ze: Why manually? {std :: lock_guard <std :: mutex> lock (mutex); // calculations} - VladD
  • @KoVadim RAII is not there now, come back later) @VladD Consider this as pseudo-code, since About the implementation of the vehicle did not say anything. It would be worthwhile to write based on C ++ 11, as you have brought, but I do not know him, I repent) - free_ze
  • Better like this: {std :: unique_lock <std :: mutex> lock (mutex); // calculations} - dzhioev