{"id":29643,"date":"2025-09-17T19:30:24","date_gmt":"2025-09-17T16:30:24","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/rustta-referans-sayimi-rc-ile-bellek-yonetimi\/"},"modified":"2025-09-17T19:30:24","modified_gmt":"2025-09-17T16:30:24","slug":"rustta-referans-sayimi-rc-ile-bellek-yonetimi","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/rustta-referans-sayimi-rc-ile-bellek-yonetimi\/","title":{"rendered":"Rust&#8217;ta Referans Say\u0131m\u0131: Rc ile Bellek Y\u00f6netimi"},"content":{"rendered":"<p>Rust&#8217;ta Referans Say\u0131m\u0131: Rc<T> ile Bellek Y\u00f6netimi<\/p>\n<p>Rust&#8217;\u0131n g\u00fc\u00e7l\u00fc bellek y\u00f6netimi sistemi, g\u00fcvenli ve performansl\u0131 kod yaz\u0131m\u0131n\u0131 sa\u011flar. Ancak, payla\u015f\u0131ml\u0131 veri yap\u0131lar\u0131n\u0131n y\u00f6netimi bazen karma\u015f\u0131kla\u015fabilir. \u0130\u015fte tam bu noktada Rust&#8217;\u0131n <code>Rc<T><\/code> tipi devreye giriyor. Bu makalede, <code>Rc<T><\/code>&#8216;nin ne oldu\u011funu, nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 ve ileri d\u00fczey tekniklerini detayl\u0131 bir \u015fekilde ele alaca\u011f\u0131z.  Rust&#8217;ta referans say\u0131m\u0131 ve bellek y\u00f6netimi konusunda sa\u011flam bir temel olu\u015fturmak i\u00e7in bu rehberi ad\u0131m ad\u0131m takip edebilirsiniz.  Bellek s\u0131z\u0131nt\u0131lar\u0131ndan ve veri yar\u0131\u015flar\u0131ndan ka\u00e7\u0131nmak i\u00e7in <code>Rc<T><\/code>&#8216;nin inceliklerini anlamak son derece \u00f6nemlidir.<\/p>\n<h2>Rust&#8217;ta Referans Say\u0131m\u0131 Nedir?<\/h2>\n<p>Rust&#8217;\u0131n sahiplik sistemi, her de\u011fer i\u00e7in tek bir sahibinin olmas\u0131n\u0131 garanti eder. Bu, bellek y\u00f6netimini basitle\u015ftirir ve bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nler. Ancak, baz\u0131 durumlarda birden fazla sahibi olan verilere ihtiya\u00e7 duyabiliriz.  \u0130\u015fte bu ihtiya\u00e7, referans say\u0131m\u0131n\u0131 devreye sokar. Referans say\u0131m\u0131, bir verinin ka\u00e7 tane referans taraf\u0131ndan kullan\u0131ld\u0131\u011f\u0131n\u0131 takip eden bir mekanizmad\u0131r. Referansa sahip olan her de\u011fi\u015fken, referans say\u0131s\u0131n\u0131 bir art\u0131r\u0131r. Referans say\u0131s\u0131 s\u0131f\u0131ra d\u00fc\u015ft\u00fc\u011f\u00fcnde, verinin bellekteki yeri serbest b\u0131rak\u0131l\u0131r.  <code>Rc<T><\/code> (Reference Counted), bu mekanizmay\u0131 Rust&#8217;ta sa\u011flayan bir tiptir.<\/p>\n<h2>Rc<T> ile Nas\u0131l \u00c7al\u0131\u015f\u0131l\u0131r? Bir Ba\u015flang\u0131\u00e7 Rehberi<\/h2>\n<p> <code>Rc<T><\/code> kullanmak olduk\u00e7a basittir.  <code>use std::rc::Rc;<\/code> sat\u0131r\u0131 ile <code>Rc<\/code> tipini projenize dahil etmeniz gerekir. Ard\u0131ndan, <code>Rc::new(value)<\/code> fonksiyonunu kullanarak herhangi bir de\u011feri <code>Rc<T><\/code>&#8216;ye sarmalayabilirsiniz. Bu, o de\u011ferin referans say\u0131m\u0131n\u0131n 1 olarak ba\u015flamas\u0131n\u0131 sa\u011flar.  Yeni referanslar olu\u015fturmak i\u00e7in <code>clone()<\/code> metodunu kullanabilirsiniz.  Referans say\u0131s\u0131 otomatik olarak artar. Son referans yok edildi\u011finde, sarmalanan de\u011fer de yok edilir.<\/p>\n<pre><code class=\"language-rust\">\nuse std::rc::Rc;\n\nfn main() {\n    let s = Rc::new(String::from(\"Merhaba D\u00fcnya!\"));\n    println!(\"Referans Say\u0131s\u0131: {}\", Rc::strong_count(&s)); \/\/ \u00c7\u0131kt\u0131: 1\n\n    let s2 = s.clone();\n    println!(\"Referans Say\u0131s\u0131: {}\", Rc::strong_count(&s)); \/\/ \u00c7\u0131kt\u0131: 2\n\n    {\n        let s3 = s.clone();\n        println!(\"Referans Say\u0131s\u0131: {}\", Rc::strong_count(&s)); \/\/ \u00c7\u0131kt\u0131: 3\n    } \/\/ s3 kapsam d\u0131\u015f\u0131na \u00e7\u0131k\u0131yor, referans say\u0131s\u0131 azal\u0131yor\n\n    println!(\"Referans Say\u0131s\u0131: {}\", Rc::strong_count(&s)); \/\/ \u00c7\u0131kt\u0131: 2\n\n    drop(s);\n    drop(s2); \/\/ s ve s2 d\u00fc\u015f\u00fcyor, referans say\u0131s\u0131 0 oluyor ve bellek serbest b\u0131rak\u0131l\u0131yor\n}\n``<code><\/pre>\n<p>Bu \u00f6rnekte,<\/code>Rc::strong_count()<code>fonksiyonu, referans say\u0131s\u0131n\u0131 kontrol etmemizi sa\u011flar. G\u00f6rd\u00fc\u011f\u00fcn\u00fcz gibi,<\/code>s<code>de\u011fi\u015fkeninin kopyalar\u0131 olu\u015fturuldu\u011funda referans say\u0131s\u0131 artar ve kopyalar kapsam d\u0131\u015f\u0131na \u00e7\u0131kt\u0131\u011f\u0131nda azal\u0131r. Son referans yok edildi\u011finde,<\/code>String<code>de\u011feri de yok edilir.<\/p>\n<h2>Rc<T> ve Kopyalama: Derin Kopyalama m\u0131, S\u0131\u011f Kopyalama m\u0131?<\/h2>\n<p><\/code>Rc<T><code>&#039;nin kullan\u0131m\u0131yla elde edilen kopyalar, s\u0131\u011f kopyalard\u0131r. Yani, orijinal veriye yeni bir referans olu\u015ftururlar.  Orijinal veri bellekte tek bir yerde kal\u0131r ve t\u00fcm referanslar bu veriyi payla\u015f\u0131r. Bu, bellek kullan\u0131m\u0131n\u0131 optimize eder ancak ayn\u0131 zamanda veriye yap\u0131lan de\u011fi\u015fikliklerin t\u00fcm referanslar taraf\u0131ndan g\u00f6r\u00fclece\u011fi anlam\u0131na gelir. Derin kopyalama yerine s\u0131\u011f kopyalama tercih edildi\u011finde, bellek y\u00f6netiminde \u00f6nemli tasarruflar sa\u011flanabilir, ancak payla\u015f\u0131lan verinin de\u011fi\u015ftirilmesi konusunda dikkatli olunmas\u0131 gerekir.<\/p>\n<h2>Rc<T>&#039;nin Ger\u00e7ek D\u00fcnya Uygulamalar\u0131: Vaka Analizi<\/h2>\n<p><\/code>Rc<T><code>&#039;nin kullan\u0131m alanlar\u0131 olduk\u00e7a geni\u015ftir.  \u00d6rne\u011fin, bir oyun geli\u015ftirme senaryosunda, oyun d\u00fcnyas\u0131ndaki nesnelerin (\u00f6rne\u011fin, a\u011fa\u00e7lar, binalar) birden fazla referans taraf\u0131ndan payla\u015f\u0131labilmesi gerekebilir.<\/code>Rc<T><code>bu senaryoda olduk\u00e7a kullan\u0131\u015fl\u0131d\u0131r.  Ayn\u0131 \u015fekilde, grafiksel kullan\u0131c\u0131 aray\u00fczlerinde, birden fazla bile\u015fenin ayn\u0131 veriyi payla\u015fmas\u0131 gereken durumlarda<\/code>Rc<T><code>kullanarak bellek y\u00f6netimini kolayla\u015ft\u0131rabiliriz.  \u00d6rne\u011fin, bir a\u011fac\u0131n farkl\u0131 dallar\u0131nda yer alan yapraklar ayn\u0131 veriyi payla\u015fabilirler.<\/p>\n<h2>Rc<T> ile Ba\u011flant\u0131l\u0131 Veri Yap\u0131lar\u0131: Weak<T> ve Strong Count<\/h2>\n<p><\/code>Rc<T><code>, payla\u015f\u0131ml\u0131 verinin g\u00fc\u00e7l\u00fc referanslar\u0131n\u0131 izler. Ancak, dairesel referanslar olu\u015fmas\u0131 durumunda bellek s\u0131z\u0131nt\u0131lar\u0131na neden olabilir.  \u0130\u015fte bu noktada<\/code>Weak<T><code>devreye girer.<\/code>Weak<T><code>, bir<\/code>Rc<T><code>&#039;nin zay\u0131f bir referans\u0131n\u0131 tutar. Zay\u0131f referanslar, referans say\u0131m\u0131n\u0131 etkilemez.  Bir<\/code>Weak<T><code>referans\u0131n\u0131n ge\u00e7erli olup olmad\u0131\u011f\u0131n\u0131 kontrol etmek i\u00e7in<\/code>upgrade()<code>metodunu kullanabilirsiniz.  Bu metod, referans hala ge\u00e7erliyse<\/code>Some(Rc<T>)<code>d\u00f6nd\u00fcr\u00fcr, de\u011filse<\/code>None<code>d\u00f6nd\u00fcr\u00fcr.<\/code>Weak<T><code>sayesinde dairesel referans problemlerini \u00e7\u00f6zerek bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nleyebilirsiniz.<\/p>\n<pre><code class=\"language-rust\">\nuse std::rc::{Rc, Weak};\n\nfn main() {\n    let a = Rc::new(String::from(\"A\"));\n    let b = Rc::new(String::from(\"B\"));\n\n    let weak_a = Rc::downgrade(&a); \/\/ A&#039;n\u0131n zay\u0131f referans\u0131n\u0131 olu\u015fturduk.\n\n    \/\/ \u0130ki de\u011fi\u015fken birbirine ba\u011fl\u0131 ve dairesel bir referans olu\u015fturuyor.\n    \/\/ Bellek s\u0131z\u0131nt\u0131s\u0131na neden olabilir.\n    let _c = Rc::new(Node {\n       data: \"C\".to_string(),\n       parent: Some(a.clone()),\n       child: Some(b.clone()),\n    });\n\n   if let Some(strong_a) = weak_a.upgrade() {\n       println!(\"a hala ge\u00e7erli: {}\", strong_a);\n   }\n}\n\nstruct Node {\n    data: String,\n    parent: Option<Rc<Node>>,\n    child: Option<Rc<Node>>,\n}\n\n<\/code><\/pre>\n<h2>\u0130leri D\u00fczey Teknikler: Performans Optimizasyonu<\/h2>\n<p><\/code>Rc<T><code>&#039;nin performans\u0131n\u0131 optimize etmek i\u00e7in baz\u0131 teknikler kullanabilirsiniz. \u00d6rne\u011fin, b\u00fcy\u00fck veri yap\u0131lar\u0131 i\u00e7in<\/code>Rc<T><code>kullan\u0131m\u0131, performans sorunlar\u0131na neden olabilir. \u00c7\u00fcnk\u00fc her eri\u015fimde referans say\u0131m\u0131 kontrol edilir. Bu gibi durumlarda, daha performansl\u0131 alternatifler d\u00fc\u015f\u00fcnebilirsiniz.  Ayr\u0131ca, gereksiz kopyalama i\u015flemlerini en aza indirmek i\u00e7in,<\/code>Rc<T><code>&#039;yi yaln\u0131zca gerekli oldu\u011fu yerlerde kullanman\u0131z \u00f6nemlidir.  Unutmay\u0131n ki,<\/code>Rc<T><code>&#039;nin getirdi\u011fi performans maliyeti, payla\u015f\u0131m avantajlar\u0131ndan daha a\u011f\u0131r basabilir.  Bu nedenle, kullan\u0131m\u0131n\u0131 dikkatlice de\u011ferlendirmelisiniz.<\/p>\n<h2>\u00d6\u011frenme Yol Haritas\u0131<\/h2>\n<table>\n<tr>\n<th>Seviye<\/th>\n<th>Konular<\/th>\n<th>\u00d6neriler<\/th>\n<\/tr>\n<tr>\n<td>Yeni Ba\u015flayan<\/td>\n<td>Rc<T> nedir, nas\u0131l olu\u015fturulur, clone() metodu, referans say\u0131m\u0131<\/td>\n<td>Basit \u00f6rnekler ile ba\u015flay\u0131n, Rc::strong_count() kullanarak referans say\u0131m\u0131n\u0131 takip edin.<\/td>\n<\/tr>\n<tr>\n<td>Orta<\/td>\n<td>Weak<T> ve dairesel referanslar, upgrade() metodu, bellek s\u0131z\u0131nt\u0131lar\u0131<\/td>\n<td>Karma\u015f\u0131k veri yap\u0131lar\u0131nda Rc<T> ve Weak<T> birlikte kullan\u0131n, bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nlemek i\u00e7in stratejiler geli\u015ftirin.<\/td>\n<\/tr>\n<tr>\n<td>\u0130leri D\u00fczey<\/td>\n<td>Performans optimizasyonu, alternatif \u00e7\u00f6z\u00fcmler (Arc<T>), farkl\u0131 kullan\u0131m senaryolar\u0131<\/td>\n<td>B\u00fcy\u00fck veri yap\u0131lar\u0131 i\u00e7in performans analizleri yap\u0131n, Arc<T><\/code>'nin avantajlar\u0131n\u0131 ve dezavantajlar\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131r\u0131n.<\/td>\n<\/tr>\n<\/table>\n<h2>Sonu\u00e7: Rc<T> ile G\u00fcvenli ve Performansl\u0131 Kod<\/h2>\n<p>Rust'taki <code>Rc<T><\/code> tipi, payla\u015f\u0131ml\u0131 veri yap\u0131lar\u0131n\u0131n g\u00fcvenli ve verimli bir \u015fekilde y\u00f6netilmesini sa\u011flar. Ancak, kullan\u0131m\u0131 ile ilgili baz\u0131 incelikleri anlamak ve potansiyel sorunlar\u0131 \u00f6nlemek \u00f6nemlidir.  Bu makalede ele ald\u0131\u011f\u0131m\u0131z ipu\u00e7lar\u0131n\u0131 ve teknikleri kullanarak, <code>Rc<T><\/code>'yi projelerinizde g\u00fcvenli ve performansl\u0131 bir \u015fekilde kullanabilirsiniz.  Daha fazla bilgi i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">fatihsoysal.com<\/a> adresini ziyaret edebilirsiniz.<\/p>\n<h3>S\u0131k\u00e7a Sorulan Sorular<\/h3>\n<ul>\n<li><strong>Rc<T> ve Arc<T> aras\u0131ndaki fark nedir?<\/strong> <code>Rc<T><\/code> tek i\u015f par\u00e7ac\u0131\u011f\u0131 i\u00e7in uygundur, <code>Arc<T><\/code> ise \u00e7ok i\u015f par\u00e7ac\u0131kl\u0131 ortamlar i\u00e7in tasarlanm\u0131\u015ft\u0131r.<\/li>\n<li><strong>Dairesel referanslar nas\u0131l \u00f6nlenir?<\/strong> <code>Weak<T><\/code> kullanarak zay\u0131f referanslar olu\u015fturarak dairesel ba\u011f\u0131ml\u0131l\u0131klar\u0131 k\u0131rabilirsiniz.<\/li>\n<li><strong>Rc<T> kullanman\u0131n performans maliyeti var m\u0131d\u0131r?<\/strong> Evet, referans say\u0131m\u0131n\u0131n takibi ek bir i\u015flem y\u00fck\u00fc getirir.  B\u00fcy\u00fck veri yap\u0131lar\u0131nda performans d\u00fc\u015f\u00fc\u015f\u00fcne yol a\u00e7abilir.<\/li>\n<li><strong>Rc<T> ne zaman kullan\u0131lmal\u0131d\u0131r?<\/strong> Payla\u015f\u0131ml\u0131 veriye ihtiya\u00e7 duyuldu\u011fu ve tek i\u015f par\u00e7ac\u0131kl\u0131 bir ortamda \u00e7al\u0131\u015f\u0131yorsan\u0131z <code>Rc<T><\/code> kullan\u0131m\u0131 uygundur.<\/li>\n<li><strong>Rc<T> ile bellek s\u0131z\u0131nt\u0131lar\u0131 nas\u0131l \u00f6nlenir?<\/strong> Dairesel referanslardan ka\u00e7\u0131n\u0131n ve <code>Weak<T><\/code>'yi uygun \u015fekilde kullan\u0131n.<\/li>\n<\/ul>\n<p>Yazar: Fatih Soysal<\/p>\n","protected":false},"excerpt":{"rendered":"Rust&#8217;ta Referans Say\u0131m\u0131: Rc ile Bellek Y\u00f6netimi Rust&#8217;\u0131n g\u00fc\u00e7l\u00fc bellek y\u00f6netimi sistemi, g\u00fcvenli ve performansl\u0131 kod yaz\u0131m\u0131n\u0131 sa\u011flar.&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-29643","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Rust&#039;ta Referans Say\u0131m\u0131: Rc ile Bellek Y\u00f6netimi<\/title>\n<meta name=\"description\" content=\"Rust&#039;\u0131n g\u00fc\u00e7l\u00fc bellek y\u00f6netimi sistemi, g\u00fcvenli ve performansl\u0131 kod yaz\u0131m\u0131n\u0131 sa\u011flar. Ancak, payla\u015f\u0131ml\u0131 veri yap\u0131lar\u0131n\u0131n y\u00f6netimi bazen karma\u015f\u0131kla\u015fabilir. \u0130\u015fte tam bu noktada Rust&#039;\u0131n `Rc` tipi devreye giriyor. Bu makalede, `Rc`&#039;nin ne oldu\u011funu, nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 ve ileri d\u00fczey tekniklerini detayl\u0131 bir \u015fekilde ele alaca\u011f\u0131z. Rust&#039;ta referans say\u0131m\u0131 ve bellek y\u00f6netimi konusunda sa\u011flam bir temel olu\u015fturmak i\u00e7in bu rehberi ad\u0131m ad\u0131m takip edebilirsiniz. Bellek s\u0131z\u0131nt\u0131lar\u0131ndan ve veri yar\u0131\u015flar\u0131ndan ka\u00e7\u0131nmak i\u00e7in `Rc`&#039;nin inceliklerini anlamak son derece \u00f6nemlidir.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/rustta-referans-sayimi-rc-ile-bellek-yonetimi\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rust&#039;ta Referans Say\u0131m\u0131: Rc ile Bellek Y\u00f6netimi\" \/>\n<meta property=\"og:description\" content=\"Rust&#039;\u0131n g\u00fc\u00e7l\u00fc bellek y\u00f6netimi sistemi, g\u00fcvenli ve performansl\u0131 kod yaz\u0131m\u0131n\u0131 sa\u011flar. Ancak, payla\u015f\u0131ml\u0131 veri yap\u0131lar\u0131n\u0131n y\u00f6netimi bazen karma\u015f\u0131kla\u015fabilir. \u0130\u015fte tam bu noktada Rust&#039;\u0131n `Rc` tipi devreye giriyor. Bu makalede, `Rc`&#039;nin ne oldu\u011funu, nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 ve ileri d\u00fczey tekniklerini detayl\u0131 bir \u015fekilde ele alaca\u011f\u0131z. Rust&#039;ta referans say\u0131m\u0131 ve bellek y\u00f6netimi konusunda sa\u011flam bir temel olu\u015fturmak i\u00e7in bu rehberi ad\u0131m ad\u0131m takip edebilirsiniz. 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