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.
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Reading this in the gap between work projects was a small but meaningful break, and a stop at globebeats extended that gentle reset, content that provides genuine refreshment rather than just distraction during work breaks is content with a particular kind of utility and this site fits that role for me reliably during work days.
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Reading this in three sittings because the day was fragmented, and the piece survived the fragmentation, and a stop at aswa9onlin held up under similar reading conditions, content engineered for continuous attention is fragile in modern conditions and this site reads as durable across the realistic ways people consume content today.
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Coming back to this one, definitely, and a quick visit to celibatea only made me more sure of that, the kind of writing that makes you want to set aside time later rather than rushing through it now while distracted by everything else competing for attention on the screen today across so many tabs.
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Liked the way the post balanced confidence and humility, and a stop at celibatea maintained the same balance, knowing when to assert and when to acknowledge uncertainty is a sign of mature thinking and the writers here have clearly developed that calibration through what I assume is years of careful work on their craft.
A welcome contrast to the loud takes that have dominated my feed lately, and a look at celerycivet extended that calm voice, content that arrives without yelling has become unusual in the modern attention economy and this site is one of the few places I have found that consistently delivers without raising its voice.
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Reading this slowly in the morning before opening email, and a stop at grouseebony extended that protected attention, content that earns the prime morning reading slot before the daily distractions begin is content with elevated status and this site has earned that prime slot consistently in my recent reading habits clearly.
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Decent post that improved my afternoon a small amount, and a look at celerycivet added a bit more to that, sometimes the small wins online add up over time and a useful site like this one is the kind of place that contributes consistently to those small wins for me lately across many different topics I follow.
В этой статье мы рассматриваем разрушительное влияние зависимости на жизнь человека. Обсуждаются аспекты, такие как здоровье, отношения и профессиональные достижения. Читатели узнают о необходимости обращения за помощью и о путях к восстановлению.
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Glad I stumbled across this post, the explanations actually make sense without needing background knowledge to follow along, and after a stop at hsgde the same was true there, no assumptions about the reader just clear writing that anyone can understand from the first line right through to the end.
Solid stuff, the kind of post that I will probably refer back to later this month when the topic comes up again, and a look at dohanyzoasztal only confirmed I should bookmark the site as a whole rather than just this single page for future reference and use across coming weeks.
В статье по вопросам здоровья мы рассматриваем актуальные проблемы, с которыми сталкивается общество. Обсуждаются заболевания, факторы риска и важные аспекты профилактики. Читатели получат полезные советы о том, как сохранить здоровье и улучшить качество жизни.
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Worth flagging that the post handled an angle of the topic I had not seen elsewhere, and a look at 5ysrzcf extended that fresh treatment, content that finds underexplored corners of well covered subjects is genuinely valuable and this site has demonstrated that exploratory editorial approach across multiple pieces in my reading sessions today.
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Эта статья освещает различные аспекты освобождения от зависимости и пути к выздоровлению. Мы обсуждаем важность осознания своей проблемы и обращения за помощью. Читатели получат практические советы о том, как преодолевать трудности и строить новую жизнь без зависимости.
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Will be sharing this with a couple of people who care about the topic, and a stop at qi3 added more material worth passing along, the kind of site that is generous with quality content and does not make you jump through hoops to access it which is appreciated more than the team probably realises.
Pass this along to colleagues if the topic comes up, the framing here is sensible, and a stop at opi4d adds more useful angles to share, the kind of content that improves conversations rather than just feeding them is what makes a resource genuinely valuable in professional contexts going forward over time and across project boundaries too.
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Thanks for taking the time to write this, it is clear that some thought went into how each point would land, and after I went through zibzi6 I had a better grip on the topic, real value without the usual marketing noise people have to put up with online when searching for answers.
Pass this along to colleagues if the topic comes up, the framing here is sensible, and a stop at opi4d adds more useful angles to share, the kind of content that improves conversations rather than just feeding them is what makes a resource genuinely valuable in professional contexts going forward over time and across project boundaries too.
Мы рассмотрим современные вызовы здравоохранения и пути их решения с помощью технологий и научных исследований. В статье собраны данные о новых лекарствах, методах диагностики и системном подходе к улучшению здоровья населения.
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Reading this gave me a small refresher on something I had partially forgotten, and a stop at intentionalmomentum extended the refresher, content that strengthens existing knowledge rather than just adding new is content with a particular kind of consolidating value and this site is providing that consolidating function across multiple visits.
A thoughtful read in a week that has been mostly noisy, and a look at loanslittle carried that thoughtful quality across more pages, finding pockets of considered writing in a week of distractions is one of the small wins of careful curation and this site is providing those pockets at a sustainable rate.
Will be coming back to this for sure, too much good content to absorb in one sitting, and a stop at zibzi6 only added more pages I want to dig through, this site is going onto my regular rotation list because it consistently delivers something worth the visit lately rather than empty filler.
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Generally I do not leave comments but this post merits a small note, and a stop at dazzquays extended that comment worthy quality, the urge to actively contribute to a sites community rather than passively consume from it is something specific content provokes and this site has provoked that engagement urge from me today.
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