November 2012
Intermediate to advanced
888 pages
54h 46m
Polish
Content preview from Ruby. Receptury
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20.5. Niszczenie wątków
Problem
Chcemy zniszczyć wątek przed zakończeniem programu.
Rozwiązanie
Wątek kończy działanie w momencie, kiedy dotrze do końca swojego bloku kodu. Najlepszym sposobem wcześniejszego zniszczenia wątku jest wymuszony skok na koniec jego bloku kodu. Dzięki temu przed zniszczeniem wątek może uruchomić kod porządkujący.
Poniższy wątek wykonuje pętlę w czasie, kiedy zmienna egzemplarza continue ma wartość true. Wystarczy ustawić tę zmienną na false, aby wątek zszedł śmiercią naturalną:
require 'thread' class CounterThread < Thread def initialize @count = 0 @continue = true super do @count += 1 while @continue puts "Zdążyłem policzyć do #{@count} i zostałem brutalnie zatrzymany." end end def stop @continue = false ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.