{"id":26744,"date":"2024-03-16T07:14:23","date_gmt":"2024-03-16T07:14:23","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/basic-implementation-of-multi-threading-in-c-language\/"},"modified":"2024-03-22T09:19:46","modified_gmt":"2024-03-22T09:19:46","slug":"basic-implementation-of-multi-threading-in-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/basic-implementation-of-multi-threading-in-c-language\/","title":{"rendered":"Basic implementation of multi-threading in C language"},"content":{"rendered":"<p>The basic implementation of multi-threading in C language can be done using the pthread library.<\/p>\n<p>Firstly, the pthread.h header file needs to be included in the program.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;pthread.h&gt;<\/span><\/span>\r\n<\/code><\/pre>\n<p>Next, it is necessary to create a thread function to execute the tasks of multi-threading. The definition of the thread function is as follows:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">void<\/span>* <span class=\"hljs-title function_\">thread_function<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">void<\/span>* arg)<\/span> {\r\n    <span class=\"hljs-comment\">\/\/ \u7ebf\u7a0b\u7684\u4efb\u52a1\u4ee3\u7801<\/span>\r\n    <span class=\"hljs-comment\">\/\/ ...<\/span>\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">NULL<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>Please note that the return type of a thread function is a void pointer, which can be used to pass the result of the thread.<\/p>\n<p>Next, create and run threads in the main function. Thread creation can be done using the pthread_create function, defined as follows:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">pthread_create<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">pthread_t<\/span>* thread, <span class=\"hljs-type\">const<\/span> <span class=\"hljs-type\">pthread_attr_t<\/span>* attr, <span class=\"hljs-type\">void<\/span>* (*start_routine)(<span class=\"hljs-type\">void<\/span>*), <span class=\"hljs-type\">void<\/span>* arg)<\/span>;\r\n<\/code><\/pre>\n<p>&#8220;thread is a pointer to the pthread_t type used to store the thread&#8217;s ID. attr is a pointer to the pthread_attr_t type used to set the thread&#8217;s attributes. start_routine refers to the thread function defined above, with arg being the parameter passed to the thread function.&#8221;<\/p>\n<p>Here is an example code for creating and running multiple threads:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;stdio.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;pthread.h&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-type\">void<\/span>* <span class=\"hljs-title function_\">thread_function<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">void<\/span>* arg)<\/span> {\r\n    <span class=\"hljs-type\">int<\/span> thread_id = *(<span class=\"hljs-type\">int<\/span>*)arg;\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"Thread %d is running\\n\"<\/span>, thread_id);\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">NULL<\/span>;\r\n}\r\n\r\n<span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">()<\/span> {\r\n    <span class=\"hljs-type\">pthread_t<\/span> threads[<span class=\"hljs-number\">10<\/span>];\r\n    <span class=\"hljs-type\">int<\/span> thread_ids[<span class=\"hljs-number\">10<\/span>];\r\n\r\n    <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-number\">10<\/span>; ++i) {\r\n        thread_ids[i] = i;\r\n        pthread_create(&amp;threads[i], <span class=\"hljs-literal\">NULL<\/span>, thread_function, &amp;thread_ids[i]);\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-number\">10<\/span>; ++i) {\r\n        pthread_join(threads[i], <span class=\"hljs-literal\">NULL<\/span>);\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>In the example above, 10 threads are created and the thread IDs are passed to the thread function through the thread_ids array. Then, the pthread_create function is used to create the threads and the pthread_join function is used to wait for all threads to finish running.<\/p>\n<p>The above is the basic implementation of multithreading in C language. Using the pthread library, it is easy to create and manage multiple threads for concurrent programming.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The basic implementation of multi-threading in C language can be done using the pthread library. Firstly, the pthread.h header file needs to be included in the program. #include &lt;pthread.h&gt; Next, it is necessary to create a thread function to execute the tasks of multi-threading. The definition of the thread function is as follows: void* thread_function(void* [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-26744","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Basic implementation of multi-threading in C language - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/basic-implementation-of-multi-threading-in-c-language\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Basic implementation of multi-threading in C language\" \/>\n<meta property=\"og:description\" content=\"The basic implementation of multi-threading in C language can be done using the pthread library. 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