Trabalho 1 – EPOS
Idle-waiting Thread Joining
– Este trabalho tinha como objetivo alterar o modo que era feito o “join” em uma Thread. Sendo que o mesmo inicialmente era feito da seguinte maneira:
[code lang=”c”] while(_state != FINISHING)
yield();
[/code]
O mesmo consiste basicamente, em verificar o estado da thread que se esta dando join e caso o estado nao seja FINISHING dar a vez a outro processo. Esta solucao, acarreta no consumo excessivo de recursos ja que o mesmo sempre retorna para a fila de _ready. E eh executado novamente quando o escalonador escolher esta thread. O trabalho pede que seja modificado de modo que o consumo de recursos nao seja excessivo.
Arquivos Modificados:
– thread.cc
– Thread.h
Solucao:
Foi criada uma variável adicional em threads.h, _waiting_for_me, que é um ponteiro para uma thread. Quando o método “join” é chamado, a thread que está executando é colocada no _waiting_for_me da thread chamada e é suspensa. Se a thread já finalizou ou alguém já chamou “join” nela, nada é feito. No método “exit”, caso _waiting_for_me esteja preenchida, é chamado o método “resume” na thread referenciada.
Pensamos em colocar uma lista de referências para várias threads poderem dar “join” na mesma thread, porém vimos na documentação do POSIX que isso era considerado um erro lógico, e achamos que acarretaria um consumo de recursos adicional desnecessário, pois não seria possível usar o _link já existente na thread, já que ela teria de estar tanto na lista de suspensos quanto na lista _waiting_for_me da outra thread.
Explicacao mais detalhada da implementacao escolhida e outras solucoes pensadas.
Granted my mood today might be elevating my reading experience but I still think this is genuinely good, and a stop at coralbrookdistrict reinforced that even discounted assessment, controlling for the mood adjustment that affects content perception this site still reads as substantively above average across multiple pieces I have read carefully today.
Glad to find a site whose links lead somewhere worth going rather than back to itself for SEO juice, and a stop at modernwin kept that generous outbound feel, citing other peoples work with real respect rather than just for ranking signals is a sign of an honest operation worth supporting going forward.
Well done, the writing is professional without being stiff, and the topic is treated with care, and a look at tidywing reflected that approach, the kind of site I would point a colleague to if they asked for a reliable starting point on this topic in the future without any hesitation at all.
Honest assessment is that this is one of the better short reads I have had this week, and a look at nextgenpickhub reinforced that, the bar for short content is low because most of it sacrifices substance for brevity but this site manages both at once which is harder than it sounds for most writers attempting it.
Closed it feeling I had taken something away rather than just consumed something, and a stop at gridprobe extended that taking away feeling, the difference between content I extract value from and content I just pass through is something I track informally and this site is consistently in the value extraction column for me.
Bookmark moved to my permanent reference folder rather than the casual maybe later folder, and a look at adrally earned the same upgrade, the distinction between casual interest and lasting reference is something I track carefully and very few sites cross that threshold but this one did so without much effort apparently.
Recommended without reservation for anyone interested in the topic at any level of expertise, and a look at advertex only strengthens that recommendation, this site clearly knows how to serve readers across a range of backgrounds without watering down the content or talking past anyone in the audience which is genuinely impressive to see.
I am sure this article has touched all the internet visitors, its
really really good article on building up new weblog.
Как настроить VPN на Windows 11 через встроенные инструменты?
Bookmark earned and folder updated to track this site separately, and a look at tidywing confirmed the folder upgrade was the right call, organising my reading list so that good sites do not get lost in a sea of casual bookmarks is something I do more carefully now and this site warranted its own spot.
В этом обзоре представлены различные методы избавления от зависимости, включая терапевтические и психологические подходы. Мы сравниваем их эффективность и предоставляем рекомендации для тех, кто хочет вернуться к трезвой жизни. Читатели смогут найти информацию о реабилитационных центрах и поддерживающих группах.
Выяснить больше – Наркологическая клиника «Похмельная служба» в Геленджике