{"id":1690,"date":"2024-10-20T18:48:16","date_gmt":"2024-10-20T10:48:16","guid":{"rendered":"http:\/\/114.55.108.251\/?p=1690"},"modified":"2025-03-04T09:44:42","modified_gmt":"2025-03-04T01:44:42","slug":"linux%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b-part4-%e9%ab%98%e5%b9%b6%e5%8f%91%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b9%8b%e4%ba%8c","status":"publish","type":"post","link":"https:\/\/guapicoding.com\/?p=1690","title":{"rendered":"Linux\u7f51\u7edc\u7f16\u7a0b Part4 \u9ad8\u5e76\u53d1\u670d\u52a1\u5668\u4e4b\u4e8c"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u7ebf\u7a0b\u6c60\u5e76\u53d1\u670d\u52a1\u5668<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e3a\u4ec0\u4e48\u8981\u5f15\u5165\u7ebf\u7a0b\u6c60\uff0c\u4e0d\u76f4\u63a5\u7528\u4e4b\u524d\u7684\u591a\u7ebf\u7a0b\u5e76\u53d1\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3a\u591a\u7ebf\u7a0b\u5e76\u53d1\u8981\u9891\u7e41\u5730\u5bf9\u7ebf\u7a0b\u8fdb\u884c\u521b\u5efa\u4e0e\u9500\u6bc1(\u4e00\u65e6\u6709\u5ba2\u6237\u7aef\u4f20\u6765\u9700\u6c42\uff0c\u5c31\u521b\u5efa\u4e00\u4e2a\u65b0\u7ebf\u7a0b\uff0c\u901a\u4fe1\u7ed3\u675f\u5c31\u7acb\u523b\u9500\u6bc1\u8be5\u7ebf\u7a0b)\uff0c\u8fd9\u4f1a\u5360\u7528\u5927\u91cf\u7684CPU\u65f6\u95f4\u5e76\u5bfc\u81f4\u4e0d\u5fc5\u8981\u7684\u7cfb\u7edf\u5f00\u9500 <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/guapicoding.com\/wp-content\/uploads\/2024\/11\/\u7ebf\u7a0b\u6c60-1024x498.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"498\" data-original=\"https:\/\/guapicoding.com\/wp-content\/uploads\/2024\/11\/\u7ebf\u7a0b\u6c60-1024x498.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1711\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">\u76f8\u5173\u7ed3\u6784\u4f53<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7ebf\u7a0b\u6c60\u7ed3\u6784\u4f53\uff1a<\/strong>\u63cf\u8ff0\u7ebf\u7a0b\u6c60\u76f8\u5173\u4fe1\u606f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pthread_mutex_t lock;               \/* \u7528\u4e8e\u9501\u4f4f\u672c\u7ed3\u6784\u4f53 *\/    \npthread_mutex_t thread_counter;     \/* \u8bb0\u5f55\u5fd9\u72b6\u6001\u7ebf\u7a0b\u4e2a\u6570\u7684\u9501 -- busy_thr_num *\/\n\npthread_cond_t queue_not_full;      \/* \u5f53\u4efb\u52a1\u961f\u5217\u6ee1\u65f6\uff0c\u6dfb\u52a0\u4efb\u52a1\u7684\u7ebf\u7a0b\u963b\u585e\uff0c\u7b49\u5f85\u6b64\u6761\u4ef6\u53d8\u91cf *\/\npthread_cond_t queue_not_empty;     \/* \u4efb\u52a1\u961f\u5217\u91cc\u4e0d\u4e3a\u7a7a\u65f6\uff0c\u901a\u77e5\u7b49\u5f85\u4efb\u52a1\u7684\u7ebf\u7a0b *\/\n\npthread_t *threads;                 \/* \u6570\u7ec4\uff0c\u5b58\u653e\u7ebf\u7a0b\u6c60\u4e2d\u6bcf\u4e2a\u7ebf\u7a0b\u7684tid *\/\npthread_t adjust_tid;               \/* \u5b58\u7ba1\u7406\u7ebf\u7a0b\u7684tid *\/\nthreadpool_task_t *task_queue;      \/* \u4efb\u52a1\u961f\u5217(\u81ea\u5b9a\u4e49\u4efb\u52a1\u961f\u5217\u7ed3\u6784\u4f53\u6570\u7ec4\u9996\u5730\u5740) *\/\n\nint min_thr_num;                    \/* \u7ebf\u7a0b\u6c60\u6700\u5c0f\u7ebf\u7a0b\u6570 *\/\nint max_thr_num;                    \/* \u7ebf\u7a0b\u6c60\u6700\u5927\u7ebf\u7a0b\u6570 *\/\nint live_thr_num;                   \/* \u5f53\u524d\u5b58\u6d3b\u7ebf\u7a0b\u4e2a\u6570 *\/\nint busy_thr_num;                   \/* \u5fd9\u72b6\u6001\u7ebf\u7a0b\u4e2a\u6570 *\/\nint wait_exit_thr_num;              \/* \u8981\u9500\u6bc1\u7684\u7ebf\u7a0b\u4e2a\u6570 *\/\n\nint queue_front;                    \/* task_queue\u961f\u5934\u4e0b\u6807 *\/\nint queue_rear;                     \/* task_queue\u961f\u5c3e\u4e0b\u6807 *\/\nint queue_size;                     \/* task_queue\u961f\u4e2d\u5b9e\u9645\u4efb\u52a1\u6570 *\/\nint queue_max_size;                 \/* task_queue\u961f\u5217\u53ef\u5bb9\u7eb3\u4efb\u52a1\u6570\u4e0a\u9650 *\/\n\nint shutdown;                       \/* \u6807\u5fd7\u4f4d\uff0c\u7ebf\u7a0b\u6c60\u4f7f\u7528\u72b6\u6001\uff0c\u662f\u5426\u5173\u95ed\u7ebf\u7a0b\u6c60\uff0ctrue\u6216false *\/<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4efb\u52a1\u961f\u5217\u7ed3\u6784\u4f53\uff1a<\/strong>\u5728\u7ebf\u7a0b\u6c60\u7ed3\u6784\u4f53\u4e2d\u5145\u5f53\u4efb\u52a1\u961f\u5217<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>typedef struct {\n    void *(*function)(void *);          \/* \u51fd\u6570\u6307\u9488\uff0c\u56de\u8c03\u51fd\u6570 *\/\n    void *arg;                          \/* \u4e0a\u9762\u51fd\u6570\u7684\u53c2\u6570 *\/\n} threadpool_task_t;                    \/* \u5404\u5b50\u7ebf\u7a0b\u4efb\u52a1\u7ed3\u6784\u4f53 *\/<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ebf\u7a0b\u6c60\u6a21\u5757\u5206\u6790<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>main()\n<ul class=\"wp-block-list\">\n<li>\u521b\u5efa\u7ebf\u7a0b\u6c60 <\/li>\n\n\n\n<li>\u5411\u7ebf\u7a0b\u6c60\u4e2d\u6dfb\u52a0\u4efb\u52a1(\u5373\u7ed9\u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\u5206\u914d\u4efb\u52a1)\uff0c\u501f\u52a9\u56de\u8c03\u51fd\u6570\u5904\u7406\u4efb\u52a1<\/li>\n\n\n\n<li>\u9500\u6bc1\u7ebf\u7a0b\u6c60\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>threadpool_create()\n<ul class=\"wp-block-list\">\n<li>\u521b\u5efa\u7ebf\u7a0b\u6c60\u7ed3\u6784\u4f53\u6307\u9488<\/li>\n\n\n\n<li>\u521d\u59cb\u5316\u7ebf\u7a0b\u6c60\u7ed3\u6784\u4f53<\/li>\n\n\n\n<li>\u521b\u5efan\u4e2a\u4efb\u52a1\u7ebf\u7a0b<\/li>\n\n\n\n<li>\u521b\u5efa1\u4e2a\u7ba1\u7406\u8005\u7ebf\u7a0b <\/li>\n\n\n\n<li>\u5931\u8d25\u65f6\uff0c\u9500\u6bc1\u5f00\u8f9f\u7684\u6240\u6709\u7a7a\u95f4(\u91ca\u653e)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>threadpool_thread() part1\n<ul class=\"wp-block-list\">\n<li>\u8fdb\u5165\u5b50\u7ebf\u7a0b\u56de\u8c03\u51fd\u6570<\/li>\n\n\n\n<li>\u63a5\u6536\u53c2\u6570void *arg\uff0c\u5373pool\u7ed3\u6784\u4f53 <\/li>\n\n\n\n<li>\u5bf9lock\u8fdb\u884c\u52a0\u9501(\u5373\u9501\u4f4f\u6574\u4e2a\u7ed3\u6784\u4f53\u7684\u90a3\u4e2a\u9501)<\/li>\n\n\n\n<li>\u5224\u65ad\u6761\u4ef6\u53d8\u91cf\u2192wait <\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>adjust_thread()\n<ul class=\"wp-block-list\">\n<li>\u8fdb\u5165\u7ba1\u7406\u8005\u7ebf\u7a0b\u56de\u8c03\u51fd\u6570<\/li>\n\n\n\n<li>\u5faa\u73af10s\u6267\u884c\u4e00\u6b21(\u7ba1\u7406\u8005\u4e0d\u7528\u4e00\u76f4\u76ef\u7740)<\/li>\n\n\n\n<li>\u63a5\u6536\u53c2\u6570void *arg\uff0c\u5373pool\u7ed3\u6784\u4f53<\/li>\n\n\n\n<li>\u5bf9lock\u8fdb\u884c\u52a0\u9501 <\/li>\n\n\n\n<li>\u83b7\u53d6\u7ba1\u7406\u7ebf\u7a0b\u6c60\u8981\u7528\u5230\u7684\u53d8\u91cf\uff1atask_num\u3001live_num\u3001busy_num <\/li>\n\n\n\n<li>\u6839\u636e\u65e2\u5b9a\u7b97\u6cd5\uff0c\u4f7f\u7528\u4e0a\u8ff0\u4e09\u4e2a\u53d8\u91cf\uff0c\u5224\u65ad\u662f\u5426\u5e94\u8be5\u521b\u5efa\u3001\u9500\u6bc1\u7ebf\u7a0b\u6c60\u4e2d\u6307\u5b9a\u6b65\u957f\u6570\u7684\u7ebf\u7a0b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>threadpool_add()\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5bf9lock\u8fdb\u884c\u52a0\u9501 <\/li>\n\n\n\n<li>\u521d\u59cb\u5316\u4efb\u52a1\u961f\u5217\u7ed3\u6784\u4f53\u6210\u5458\uff1a\u8bbe\u7f6e\u56de\u8c03\u51fd\u6570function\u4e0e\u51fd\u6570\u53c2\u6570arg<\/li>\n\n\n\n<li>\u5229\u7528\u73af\u5f62\u961f\u5217\u673a\u5236(\u79fb\u52a8\u961f\u5c3e\u6307\u9488\u548c\u53d6\u4f59\u64cd\u4f5c)\uff0c\u5b9e\u73b0\u6dfb\u52a0\u4efb\u52a1\uff0c\u5373\u5165\u961f<\/li>\n\n\n\n<li>\u5524\u9192\u963b\u585e\u5728\u6761\u4ef6\u53d8\u91cfqueue_not_empty\u4e0a\u7684\u7ebf\u7a0b <\/li>\n\n\n\n<li>\u89e3\u9501<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>threadpool_thread() part2\n<ul class=\"wp-block-list\">\n<li>\u4ece3.\u4e2d\u7684wait\u4e4b\u540e\u7ee7\u7eed\u6267\u884c <\/li>\n\n\n\n<li>\u83b7\u53d6\u4efb\u52a1\u5904\u7406\u56de\u8c03\u51fd\u6570\u53ca\u5176\u53c2\u6570 <\/li>\n\n\n\n<li>\u5229\u7528\u73af\u5f62\u961f\u5217\u673a\u5236(\u79fb\u52a8\u961f\u5934\u6307\u9488\u548c\u53d6\u4f59\u64cd\u4f5c)\uff0c\u5b9e\u73b0\u5904\u7406\u4efb\u52a1\uff0c\u5373\u51fa\u961f <\/li>\n\n\n\n<li>\u5524\u9192\u963b\u585e\u5728\u6761\u4ef6\u53d8\u91cfqueue_not_full\u4e0a\u7684server<\/li>\n\n\n\n<li>\u5bf9lock\u8fdb\u884c\u89e3\u9501<\/li>\n\n\n\n<li>\u5bf9thread_counter\u52a0\u9501<\/li>\n\n\n\n<li>\u4fee\u6539\u5fd9\u7ebf\u7a0b\u6570++ <\/li>\n\n\n\n<li>\u5bf9thread_counter\u89e3\u9501 <\/li>\n\n\n\n<li>\u6267\u884c\u5904\u7406\u4efb\u52a1\u7684\u7ebf\u7a0b<\/li>\n\n\n\n<li>\u5bf9thread_counter\u52a0\u9501<\/li>\n\n\n\n<li>\u4fee\u6539\u5fd9\u7ebf\u7a0b\u6570&#8211;<\/li>\n\n\n\n<li>\u5bf9thread_counter\u89e3\u9501 <\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6269\u5bb9\/\u7626\u8eab \n<ul class=\"wp-block-list\">\n<li>\u5f53\u6ee1\u8db3\u6269\u5bb9\u6761\u4ef6\u65f6\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6267\u884cpthread_create()<\/li>\n\n\n\n<li>\u56de\u8c03\u4efb\u52a1\u7ebf\u7a0b\u51fd\u6570<\/li>\n\n\n\n<li>live_num++ <\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5f53\u6ee1\u8db3\u7626\u8eab\u6761\u4ef6\u65f6\uff1a\n<ul class=\"wp-block-list\">\n<li>\u8bbe\u7f6ewait_exit_thr_num = 10; <\/li>\n\n\n\n<li>\u7ed9\u963b\u585e\u5728\u6761\u4ef6\u53d8\u91cfqueue_not_empty\u4e0a\u7684\u7ebf\u7a0b\u53d1\u9001\u5047\u6761\u4ef6\u6ee1\u8db3\u4fe1\u53f7<\/li>\n\n\n\n<li>\u963b\u585e\u7ebf\u7a0b\u4f1a\u88ab\u5047\u4fe1\u53f7\u5524\u9192\uff0c\u6267\u884c\u9500\u6bc1\u6d41\u7a0b\uff1a\u5224\u65adwait_exit_thr_num &gt; 0\u2192pthread_exit();<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u73b0\u4ee3\u7801<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u80fd\u770b\u61c2\u5373\u53ef\n#include &lt;stdlib.h>\n#include &lt;pthread.h>\n#include &lt;unistd.h>\n#include &lt;assert.h>\n#include &lt;stdio.h>\n#include &lt;string.h>\n#include &lt;signal.h>\n#include &lt;errno.h>\n#include \"threadpool.h\"\n\n#define DEFAULT_TIME 10                 \/*10s\u68c0\u6d4b\u4e00\u6b21*\/\n#define MIN_WAIT_TASK_NUM 10            \/*\u5982\u679cqueue_size > MIN_WAIT_TASK_NUM \u6dfb\u52a0\u65b0\u7684\u7ebf\u7a0b\u5230\u7ebf\u7a0b\u6c60*\/ \n#define DEFAULT_THREAD_VARY 10          \/*\u6bcf\u6b21\u521b\u5efa\u548c\u9500\u6bc1\u7ebf\u7a0b\u7684\u4e2a\u6570*\/\n#define true 1\n#define false 0\n\ntypedef struct {\n    void *(*function)(void *);          \/* \u51fd\u6570\u6307\u9488\uff0c\u56de\u8c03\u51fd\u6570 *\/\n    void *arg;                          \/* \u4e0a\u9762\u51fd\u6570\u7684\u53c2\u6570 *\/\n} threadpool_task_t;                    \/* \u5404\u5b50\u7ebf\u7a0b\u4efb\u52a1\u7ed3\u6784\u4f53 *\/\n\n\/* \u63cf\u8ff0\u7ebf\u7a0b\u6c60\u76f8\u5173\u4fe1\u606f *\/\n\nstruct threadpool_t {\n    pthread_mutex_t lock;               \/* \u7528\u4e8e\u9501\u4f4f\u672c\u7ed3\u6784\u4f53 *\/    \n    pthread_mutex_t thread_counter;     \/* \u8bb0\u5f55\u5fd9\u72b6\u6001\u7ebf\u7a0b\u4e2a\u6570de\u7410 -- busy_thr_num *\/\n\n    pthread_cond_t queue_not_full;      \/* \u5f53\u4efb\u52a1\u961f\u5217\u6ee1\u65f6\uff0c\u6dfb\u52a0\u4efb\u52a1\u7684\u7ebf\u7a0b\u963b\u585e\uff0c\u7b49\u5f85\u6b64\u6761\u4ef6\u53d8\u91cf *\/\n    pthread_cond_t queue_not_empty;     \/* \u4efb\u52a1\u961f\u5217\u91cc\u4e0d\u4e3a\u7a7a\u65f6\uff0c\u901a\u77e5\u7b49\u5f85\u4efb\u52a1\u7684\u7ebf\u7a0b *\/\n\n    pthread_t *threads;                 \/* \u5b58\u653e\u7ebf\u7a0b\u6c60\u4e2d\u6bcf\u4e2a\u7ebf\u7a0b\u7684tid\u3002\u6570\u7ec4 *\/\n    pthread_t adjust_tid;               \/* \u5b58\u7ba1\u7406\u7ebf\u7a0btid *\/\n    threadpool_task_t *task_queue;      \/* \u4efb\u52a1\u961f\u5217(\u6570\u7ec4\u9996\u5730\u5740) *\/\n\n    int min_thr_num;                    \/* \u7ebf\u7a0b\u6c60\u6700\u5c0f\u7ebf\u7a0b\u6570 *\/\n    int max_thr_num;                    \/* \u7ebf\u7a0b\u6c60\u6700\u5927\u7ebf\u7a0b\u6570 *\/\n    int live_thr_num;                   \/* \u5f53\u524d\u5b58\u6d3b\u7ebf\u7a0b\u4e2a\u6570 *\/\n    int busy_thr_num;                   \/* \u5fd9\u72b6\u6001\u7ebf\u7a0b\u4e2a\u6570 *\/\n    int wait_exit_thr_num;              \/* \u8981\u9500\u6bc1\u7684\u7ebf\u7a0b\u4e2a\u6570 *\/\n\n    int queue_front;                    \/* task_queue\u961f\u5934\u4e0b\u6807 *\/\n    int queue_rear;                     \/* task_queue\u961f\u5c3e\u4e0b\u6807 *\/\n    int queue_size;                     \/* task_queue\u961f\u4e2d\u5b9e\u9645\u4efb\u52a1\u6570 *\/\n    int queue_max_size;                 \/* task_queue\u961f\u5217\u53ef\u5bb9\u7eb3\u4efb\u52a1\u6570\u4e0a\u9650 *\/\n\n    int shutdown;                       \/* \u6807\u5fd7\u4f4d\uff0c\u7ebf\u7a0b\u6c60\u4f7f\u7528\u72b6\u6001\uff0ctrue\u6216false *\/\n};\n\nvoid *threadpool_thread(void *threadpool);\n\nvoid *adjust_thread(void *threadpool);\n\nint is_thread_alive(pthread_t tid);\nint threadpool_free(threadpool_t *pool);\n\n\/\/threadpool_create(3,100,100);  \nthreadpool_t *threadpool_create(int min_thr_num, int max_thr_num, int queue_max_size)\n{\n    int i;\n    threadpool_t *pool = NULL;          \/* \u7ebf\u7a0b\u6c60 \u7ed3\u6784\u4f53 *\/\n\n    do {\n        if((pool = (threadpool_t *)malloc(sizeof(threadpool_t))) == NULL) {  \n            printf(\"malloc threadpool fail\");\n            break;                                      \/*\u8df3\u51fado while*\/\n        }\n\n        pool->min_thr_num = min_thr_num;\n        pool->max_thr_num = max_thr_num;\n        pool->busy_thr_num = 0;\n        pool->live_thr_num = min_thr_num;               \/* \u6d3b\u7740\u7684\u7ebf\u7a0b\u6570 \u521d\u503c=\u6700\u5c0f\u7ebf\u7a0b\u6570 *\/\n        pool->wait_exit_thr_num = 0;\n        pool->queue_size = 0;                           \/* \u67090\u4e2a\u4ea7\u54c1 *\/\n        pool->queue_max_size = queue_max_size;          \/* \u6700\u5927\u4efb\u52a1\u961f\u5217\u6570 *\/\n        pool->queue_front = 0;\n        pool->queue_rear = 0;\n        pool->shutdown = false;                         \/* \u4e0d\u5173\u95ed\u7ebf\u7a0b\u6c60 *\/\n\n        \/* \u6839\u636e\u6700\u5927\u7ebf\u7a0b\u4e0a\u9650\u6570\uff0c \u7ed9\u5de5\u4f5c\u7ebf\u7a0b\u6570\u7ec4\u5f00\u8f9f\u7a7a\u95f4, \u5e76\u6e05\u96f6 *\/\n        pool->threads = (pthread_t *)malloc(sizeof(pthread_t)*max_thr_num); \n        if (pool->threads == NULL) {\n            printf(\"malloc threads fail\");\n            break;\n        }\n        memset(pool->threads, 0, sizeof(pthread_t)*max_thr_num);\n\n        \/* \u7ed9 \u4efb\u52a1\u961f\u5217 \u5f00\u8f9f\u7a7a\u95f4 *\/\n        pool->task_queue = (threadpool_task_t *)malloc(sizeof(threadpool_task_t)*queue_max_size);\n        if (pool->task_queue == NULL) {\n            printf(\"malloc task_queue fail\");\n            break;\n        }\n\n        \/* \u521d\u59cb\u5316\u4e92\u65a5\u7410\u3001\u6761\u4ef6\u53d8\u91cf *\/\n        if (pthread_mutex_init(&amp;(pool->lock), NULL) != 0\n                || pthread_mutex_init(&amp;(pool->thread_counter), NULL) != 0\n                || pthread_cond_init(&amp;(pool->queue_not_empty), NULL) != 0\n                || pthread_cond_init(&amp;(pool->queue_not_full), NULL) != 0)\n        {\n            printf(\"init the lock or cond fail\");\n            break;\n        }\n\n        \/* \u542f\u52a8 min_thr_num \u4e2a work thread *\/\n        for (i = 0; i &lt; min_thr_num; i++) {\n            pthread_create(&amp;(pool->threads&#91;i]), NULL, threadpool_thread, (void *)pool);   \/*pool\u6307\u5411\u5f53\u524d\u7ebf\u7a0b\u6c60*\/\n            printf(\"start thread 0x%x...\\n\", (unsigned int)pool->threads&#91;i]);\n        }\n        pthread_create(&amp;(pool->adjust_tid), NULL, adjust_thread, (void *)pool);     \/* \u521b\u5efa\u7ba1\u7406\u8005\u7ebf\u7a0b *\/\n\n        return pool;\n\n    } while (0);\n\n    threadpool_free(pool);      \/* \u524d\u9762\u4ee3\u7801\u8c03\u7528\u5931\u8d25\u65f6\uff0c\u91ca\u653epool\u5b58\u50a8\u7a7a\u95f4 *\/\n\n    return NULL;\n}\n\n\/* \u5411\u7ebf\u7a0b\u6c60\u4e2d \u6dfb\u52a0\u4e00\u4e2a\u4efb\u52a1 *\/\n\/\/threadpool_add(thp, process, (void*)&amp;num&#91;i]);   \/* \u5411\u7ebf\u7a0b\u6c60\u4e2d\u6dfb\u52a0\u4efb\u52a1 process: \u5c0f\u5199---->\u5927\u5199*\/\n\nint threadpool_add(threadpool_t *pool, void*(*function)(void *arg), void *arg)\n{\n    pthread_mutex_lock(&amp;(pool->lock));\n\n    \/* ==\u4e3a\u771f\uff0c\u961f\u5217\u5df2\u7ecf\u6ee1\uff0c \u8c03wait\u963b\u585e *\/\n    while ((pool->queue_size == pool->queue_max_size) &amp;&amp; (!pool->shutdown)) {\n        pthread_cond_wait(&amp;(pool->queue_not_full), &amp;(pool->lock));\n    }\n\n    if (pool->shutdown) {\n        pthread_cond_broadcast(&amp;(pool->queue_not_empty));\n        pthread_mutex_unlock(&amp;(pool->lock));\n        return 0;\n    }\n\n    \/* \u6e05\u7a7a \u5de5\u4f5c\u7ebf\u7a0b \u8c03\u7528\u7684\u56de\u8c03\u51fd\u6570 \u7684\u53c2\u6570arg *\/\n    if (pool->task_queue&#91;pool->queue_rear].arg != NULL) {\n        pool->task_queue&#91;pool->queue_rear].arg = NULL;\n    }\n\n    \/*\u6dfb\u52a0\u4efb\u52a1\u5230\u4efb\u52a1\u961f\u5217\u91cc*\/\n    pool->task_queue&#91;pool->queue_rear].function = function;\n    pool->task_queue&#91;pool->queue_rear].arg = arg;\n    pool->queue_rear = (pool->queue_rear + 1) % pool->queue_max_size;       \/* \u961f\u5c3e\u6307\u9488\u79fb\u52a8, \u6a21\u62df\u73af\u5f62 *\/\n    pool->queue_size++;\n\n    \/*\u6dfb\u52a0\u5b8c\u4efb\u52a1\u540e\uff0c\u961f\u5217\u4e0d\u4e3a\u7a7a\uff0c\u5524\u9192\u7ebf\u7a0b\u6c60\u4e2d \u7b49\u5f85\u5904\u7406\u4efb\u52a1\u7684\u7ebf\u7a0b*\/\n    pthread_cond_signal(&amp;(pool->queue_not_empty));\n    pthread_mutex_unlock(&amp;(pool->lock));\n\n    return 0;\n}\n\n\/* \u7ebf\u7a0b\u6c60\u4e2d\u5404\u4e2a\u5de5\u4f5c\u7ebf\u7a0b *\/\nvoid *threadpool_thread(void *threadpool)\n{\n    threadpool_t *pool = (threadpool_t *)threadpool;\n    threadpool_task_t task;\n\n    while (true) {\n        \/* Lock must be taken to wait on conditional variable *\/\n        \/*\u521a\u521b\u5efa\u51fa\u7ebf\u7a0b\uff0c\u7b49\u5f85\u4efb\u52a1\u961f\u5217\u91cc\u6709\u4efb\u52a1\uff0c\u5426\u5219\u963b\u585e\u7b49\u5f85\u4efb\u52a1\u961f\u5217\u91cc\u6709\u4efb\u52a1\u540e\u518d\u5524\u9192\u63a5\u6536\u4efb\u52a1*\/\n        pthread_mutex_lock(&amp;(pool->lock));\n\n        \/*queue_size == 0 \u8bf4\u660e\u6ca1\u6709\u4efb\u52a1\uff0c\u8c03 wait \u963b\u585e\u5728\u6761\u4ef6\u53d8\u91cf\u4e0a, \u82e5\u6709\u4efb\u52a1\uff0c\u8df3\u8fc7\u8be5while*\/\n        while ((pool->queue_size == 0) &amp;&amp; (!pool->shutdown)) {  \n            printf(\"thread 0x%x is waiting\\n\", (unsigned int)pthread_self());\n            pthread_cond_wait(&amp;(pool->queue_not_empty), &amp;(pool->lock));\n\n            \/*\u6e05\u9664\u6307\u5b9a\u6570\u76ee\u7684\u7a7a\u95f2\u7ebf\u7a0b\uff0c\u5982\u679c\u8981\u7ed3\u675f\u7684\u7ebf\u7a0b\u4e2a\u6570\u5927\u4e8e0\uff0c\u7ed3\u675f\u7ebf\u7a0b*\/\n            if (pool->wait_exit_thr_num > 0) {\n                pool->wait_exit_thr_num--;\n\n                \/*\u5982\u679c\u7ebf\u7a0b\u6c60\u91cc\u7ebf\u7a0b\u4e2a\u6570\u5927\u4e8e\u6700\u5c0f\u503c\u65f6\u53ef\u4ee5\u7ed3\u675f\u5f53\u524d\u7ebf\u7a0b*\/\n                if (pool->live_thr_num > pool->min_thr_num) {\n                    printf(\"thread 0x%x is exiting\\n\", (unsigned int)pthread_self());\n                    pool->live_thr_num--;\n                    pthread_mutex_unlock(&amp;(pool->lock));\n\n                    pthread_exit(NULL);\n                }\n            }\n        }\n\n        \/*\u5982\u679c\u6307\u5b9a\u4e86true\uff0c\u8981\u5173\u95ed\u7ebf\u7a0b\u6c60\u91cc\u7684\u6bcf\u4e2a\u7ebf\u7a0b\uff0c\u81ea\u884c\u9000\u51fa\u5904\u7406---\u9500\u6bc1\u7ebf\u7a0b\u6c60*\/\n        if (pool->shutdown) {\n            pthread_mutex_unlock(&amp;(pool->lock));\n            printf(\"thread 0x%x is exiting\\n\", (unsigned int)pthread_self());\n            pthread_detach(pthread_self());\n            pthread_exit(NULL);     \/* \u7ebf\u7a0b\u81ea\u884c\u7ed3\u675f *\/\n        }\n\n        \/*\u4ece\u4efb\u52a1\u961f\u5217\u91cc\u83b7\u53d6\u4efb\u52a1, \u662f\u4e00\u4e2a\u51fa\u961f\u64cd\u4f5c*\/\n        task.function = pool->task_queue&#91;pool->queue_front].function;\n        task.arg = pool->task_queue&#91;pool->queue_front].arg;\n\n        pool->queue_front = (pool->queue_front + 1) % pool->queue_max_size;       \/* \u51fa\u961f\uff0c\u6a21\u62df\u73af\u5f62\u961f\u5217 *\/\n        pool->queue_size--;\n\n        \/*\u901a\u77e5\u53ef\u4ee5\u6709\u65b0\u7684\u4efb\u52a1\u6dfb\u52a0\u8fdb\u6765*\/\n        pthread_cond_broadcast(&amp;(pool->queue_not_full));\n\n        \/*\u4efb\u52a1\u53d6\u51fa\u540e\uff0c\u7acb\u5373\u5c06 \u7ebf\u7a0b\u6c60\u7410 \u91ca\u653e*\/\n        pthread_mutex_unlock(&amp;(pool->lock));\n\n        \/*\u6267\u884c\u4efb\u52a1*\/ \n        printf(\"thread 0x%x start working\\n\", (unsigned int)pthread_self());\n        pthread_mutex_lock(&amp;(pool->thread_counter));                            \/*\u5fd9\u72b6\u6001\u7ebf\u7a0b\u6570\u53d8\u91cf\u7410*\/\n        pool->busy_thr_num++;                                                   \/*\u5fd9\u72b6\u6001\u7ebf\u7a0b\u6570+1*\/\n        pthread_mutex_unlock(&amp;(pool->thread_counter));\n\n        (*(task.function))(task.arg);                                           \/*\u6267\u884c\u56de\u8c03\u51fd\u6570\u4efb\u52a1*\/\n        \/\/task.function(task.arg);                                              \/*\u6267\u884c\u56de\u8c03\u51fd\u6570\u4efb\u52a1*\/\n\n        \/*\u4efb\u52a1\u7ed3\u675f\u5904\u7406*\/ \n        printf(\"thread 0x%x end working\\n\", (unsigned int)pthread_self());\n        pthread_mutex_lock(&amp;(pool->thread_counter));\n        pool->busy_thr_num--;                                       \/*\u5904\u7406\u6389\u4e00\u4e2a\u4efb\u52a1\uff0c\u5fd9\u72b6\u6001\u6570\u7ebf\u7a0b\u6570-1*\/\n        pthread_mutex_unlock(&amp;(pool->thread_counter));\n    }\n\n    pthread_exit(NULL);\n}\n\n\/* \u7ba1\u7406\u7ebf\u7a0b *\/\nvoid *adjust_thread(void *threadpool)\n{\n    int i;\n    threadpool_t *pool = (threadpool_t *)threadpool;\n    while (!pool->shutdown) {\n\n        sleep(DEFAULT_TIME);                                    \/*\u5b9a\u65f6 \u5bf9\u7ebf\u7a0b\u6c60\u7ba1\u7406*\/\n\n        pthread_mutex_lock(&amp;(pool->lock));\n        int queue_size = pool->queue_size;                      \/* \u5173\u6ce8 \u4efb\u52a1\u6570 *\/\n        int live_thr_num = pool->live_thr_num;                  \/* \u5b58\u6d3b \u7ebf\u7a0b\u6570 *\/\n        pthread_mutex_unlock(&amp;(pool->lock));\n\n        pthread_mutex_lock(&amp;(pool->thread_counter));\n        int busy_thr_num = pool->busy_thr_num;                  \/* \u5fd9\u7740\u7684\u7ebf\u7a0b\u6570 *\/\n        pthread_mutex_unlock(&amp;(pool->thread_counter));\n\n        \/* \u521b\u5efa\u65b0\u7ebf\u7a0b \u7b97\u6cd5\uff1a \u4efb\u52a1\u6570\u5927\u4e8e\u6700\u5c0f\u7ebf\u7a0b\u6c60\u4e2a\u6570, \u4e14\u5b58\u6d3b\u7684\u7ebf\u7a0b\u6570\u5c11\u4e8e\u6700\u5927\u7ebf\u7a0b\u4e2a\u6570\u65f6 \u5982\uff1a30>=10 &amp;&amp; 40&lt;100*\/\n        if (queue_size >= MIN_WAIT_TASK_NUM &amp;&amp; live_thr_num &lt; pool->max_thr_num) {\n            pthread_mutex_lock(&amp;(pool->lock));  \n            int add = 0;\n\n            \/*\u4e00\u6b21\u589e\u52a0 DEFAULT_THREAD \u4e2a\u7ebf\u7a0b*\/\n            for (i = 0; i &lt; pool->max_thr_num &amp;&amp; add &lt; DEFAULT_THREAD_VARY\n                    &amp;&amp; pool->live_thr_num &lt; pool->max_thr_num; i++) {\n                if (pool->threads&#91;i] == 0 || !is_thread_alive(pool->threads&#91;i])) {\n                    pthread_create(&amp;(pool->threads&#91;i]), NULL, threadpool_thread, (void *)pool);\n                    add++;\n                    pool->live_thr_num++;\n                }\n            }\n\n            pthread_mutex_unlock(&amp;(pool->lock));\n        }\n\n        \/* \u9500\u6bc1\u591a\u4f59\u7684\u7a7a\u95f2\u7ebf\u7a0b \u7b97\u6cd5\uff1a\u5fd9\u7ebf\u7a0bX2 \u5c0f\u4e8e \u5b58\u6d3b\u7684\u7ebf\u7a0b\u6570 \u4e14 \u5b58\u6d3b\u7684\u7ebf\u7a0b\u6570 \u5927\u4e8e \u6700\u5c0f\u7ebf\u7a0b\u6570\u65f6*\/\n        if ((busy_thr_num * 2) &lt; live_thr_num  &amp;&amp;  live_thr_num > pool->min_thr_num) {\n\n            \/* \u4e00\u6b21\u9500\u6bc1DEFAULT_THREAD\u4e2a\u7ebf\u7a0b, \u96a8\u6a5f10\u500b\u5373\u53ef *\/\n            pthread_mutex_lock(&amp;(pool->lock));\n            pool->wait_exit_thr_num = DEFAULT_THREAD_VARY;      \/* \u8981\u9500\u6bc1\u7684\u7ebf\u7a0b\u6570 \u8bbe\u7f6e\u4e3a10 *\/\n            pthread_mutex_unlock(&amp;(pool->lock));\n\n            for (i = 0; i &lt; DEFAULT_THREAD_VARY; i++) {\n                \/* \u901a\u77e5\u5904\u5728\u7a7a\u95f2\u72b6\u6001\u7684\u7ebf\u7a0b, \u4ed6\u4eec\u4f1a\u81ea\u884c\u7ec8\u6b62*\/\n                pthread_cond_signal(&amp;(pool->queue_not_empty));\n            }\n        }\n    }\n\n    return NULL;\n}\n\nint threadpool_destroy(threadpool_t *pool)\n{\n    int i;\n    if (pool == NULL) {\n        return -1;\n    }\n    pool->shutdown = true;\n\n    \/*\u5148\u9500\u6bc1\u7ba1\u7406\u7ebf\u7a0b*\/\n    pthread_join(pool->adjust_tid, NULL);\n\n    for (i = 0; i &lt; pool->live_thr_num; i++) {\n        \/*\u901a\u77e5\u6240\u6709\u7684\u7a7a\u95f2\u7ebf\u7a0b*\/\n        pthread_cond_broadcast(&amp;(pool->queue_not_empty));\n    }\n    for (i = 0; i &lt; pool->live_thr_num; i++) {\n        pthread_join(pool->threads&#91;i], NULL);\n    }\n    threadpool_free(pool);\n\n    return 0;\n}\n\nint threadpool_free(threadpool_t *pool)\n{\n    if (pool == NULL) {\n        return -1;\n    }\n\n    if (pool->task_queue) {\n        free(pool->task_queue);\n    }\n    if (pool->threads) {\n        free(pool->threads);\n        pthread_mutex_lock(&amp;(pool->lock));\n        pthread_mutex_destroy(&amp;(pool->lock));\n        pthread_mutex_lock(&amp;(pool->thread_counter));\n        pthread_mutex_destroy(&amp;(pool->thread_counter));\n        pthread_cond_destroy(&amp;(pool->queue_not_empty));\n        pthread_cond_destroy(&amp;(pool->queue_not_full));\n    }\n    free(pool);\n    pool = NULL;\n\n    return 0;\n}\n\nint threadpool_all_threadnum(threadpool_t *pool)\n{\n    int all_threadnum = -1;                 \/\/ \u603b\u7ebf\u7a0b\u6570\n\n    pthread_mutex_lock(&amp;(pool->lock));\n    all_threadnum = pool->live_thr_num;     \/\/ \u5b58\u6d3b\u7ebf\u7a0b\u6570\n    pthread_mutex_unlock(&amp;(pool->lock));\n\n    return all_threadnum;\n}\n\nint threadpool_busy_threadnum(threadpool_t *pool)\n{\n    int busy_threadnum = -1;                \/\/ \u5fd9\u7ebf\u7a0b\u6570\n\n    pthread_mutex_lock(&amp;(pool->thread_counter));\n    busy_threadnum = pool->busy_thr_num;    \n    pthread_mutex_unlock(&amp;(pool->thread_counter));\n\n    return busy_threadnum;\n}\n\nint is_thread_alive(pthread_t tid)\n{\n    int kill_rc = pthread_kill(tid, 0);     \/\/\u53d10\u53f7\u4fe1\u53f7\uff0c\u6d4b\u8bd5\u7ebf\u7a0b\u662f\u5426\u5b58\u6d3b\n    if (kill_rc == ESRCH) {\n        return false;\n    }\n    return true;\n}\n\n\/*\u6d4b\u8bd5*\/ \n\n#if 1\n\n\/* \u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\uff0c\u6a21\u62df\u5904\u7406\u4e1a\u52a1 *\/\nvoid *process(void *arg)\n{\n    printf(\"thread 0x%x working on task %d\\n \",(unsigned int)pthread_self(),(int)arg);\n    sleep(1);                           \/\/\u6a21\u62df \u5c0f---\u5927\u5199\n    printf(\"task %d is end\\n\",(int)arg);\n\n    return NULL;\n}\n\nint main(void)\n{\n    \/*threadpool_t *threadpool_create(int min_thr_num, int max_thr_num, int queue_max_size);*\/\n\n    threadpool_t *thp = threadpool_create(3,100,100);   \/*\u521b\u5efa\u7ebf\u7a0b\u6c60\uff0c\u6c60\u91cc\u6700\u5c0f3\u4e2a\u7ebf\u7a0b\uff0c\u6700\u5927100\uff0c\u961f\u5217\u6700\u5927100*\/\n    printf(\"pool inited\");\n\n    \/\/int *num = (int *)malloc(sizeof(int)*20);\n    int num&#91;20], i;\n    for (i = 0; i &lt; 20; i++) {\n        num&#91;i] = i;\n        printf(\"add task %d\\n\",i);\n        \n        \/*int threadpool_add(threadpool_t *pool, void*(*function)(void *arg), void *arg) *\/\n\n        threadpool_add(thp, process, (void*)&amp;num&#91;i]);   \/* \u5411\u7ebf\u7a0b\u6c60\u4e2d\u6dfb\u52a0\u4efb\u52a1 *\/\n    }\n\n    sleep(10);                                          \/* \u7b49\u5b50\u7ebf\u7a0b\u5b8c\u6210\u4efb\u52a1 *\/\n    threadpool_destroy(thp);\n\n    return 0;\n}\n\n#endif<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">C\/S\u6a21\u578b-UDP<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">TCP\/UDP\u901a\u4fe1\u5bf9\u6bd4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>TCP\uff1a\u9762\u5411\u8fde\u63a5<\/strong>\u7684\uff0c<strong>\u53ef\u9760<\/strong>\u6570\u636e\u5305\u4f20\u8f93\u3002\u5bf9\u4e8e\u4e0d\u7a33\u5b9a\u7684\u7f51\u7edc\u5c42\uff0c\u91c7\u53d6\u5b8c\u5168\u5f25\u8865\u7684\u901a\u4fe1\u65b9\u5f0f(\u4e22\u5305\u91cd\u4f20)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f18\u70b9 \n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u6d41\u91cf\u7a33\u5b9a<\/li>\n\n\n\n<li>\u901f\u5ea6\u7a33\u5b9a<\/li>\n\n\n\n<li>\u6309\u5e8f<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7f3a\u70b9\n<ul class=\"wp-block-list\">\n<li>\u4f20\u8f93\u901f\u5ea6\u6162<\/li>\n\n\n\n<li>\u6548\u7387\u4f4e<\/li>\n\n\n\n<li>\u5f00\u9500\u5927<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4f7f\u7528\u573a\u666f\uff1a\u6570\u636e\u7684\u5b8c\u6574\u578b\u8981\u6c42\u8f83\u9ad8\uff0c\u4e0d\u8ffd\u6c42\u6548\u7387(\u5927\u6570\u636e\u4f20\u8f93\u3001\u6587\u4ef6\u4f20\u8f93)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>UDP\uff1a\u65e0\u8fde\u63a5<\/strong>\u7684\uff0c\u4e0d\u53ef\u9760\u7684\u6570\u636e\u62a5\u4f20\u9012\u3002\u5bf9\u4e8e\u4e0d\u7a33\u5b9a\u7684\u7f51\u7edc\u5c42\uff0c\u91c7\u53d6\u5b8c\u5168\u4e0d\u5f25\u8865\u7684\u901a\u4fe1\u65b9\u5f0f(\u9ed8\u8ba4\u8fd8\u539f\u7f51\u7edc\u72b6\u51b5)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f18\u70b9\n<ul class=\"wp-block-list\">\n<li>\u4f20\u8f93\u901f\u5ea6\u5757<\/li>\n\n\n\n<li>\u6548\u7387\u9ad8<\/li>\n\n\n\n<li>\u5f00\u9500\u5c0f<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7f3a\u70b9\n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u6d41\u91cf\u4e0d\u7a33\u5b9a<\/li>\n\n\n\n<li>\u901f\u5ea6\u4e0d\u7a33\u5b9a<\/li>\n\n\n\n<li>\u4e0d\u6309\u5e8f<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4f7f\u7528\u573a\u666f\uff1a\u5bf9\u65f6\u6548\u6027\u8981\u6c42\u8f83\u9ad8\uff0c\u7a33\u5b9a\u6027\u5176\u6b21(\u6e38\u620f\u3001\u89c6\u9891\u7535\u8bdd)<br><br>\t\t  <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">ps\uff1aQQ\u3001\u5fae\u4fe1\u7b49\u5927\u578b\u9879\u76ee\u8ffd\u6c42\u4f20\u8f93\u901f\u5ea6\uff0c\u5728\u4f20\u8f93\u5c42\u91c7\u7528UDP\u534f\u8bae\uff0c\u4f46\u4f1a\u5728\u5e94\u7528\u5c42\u8865\u5145\u6570\u636e\u6821\u9a8c\u534f\u8bae\uff0c\u5f25\u8865UDP\u7684\u4e0d\u8db3 <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UDP\u5b9e\u73b0\u7684 C\/S \u6a21\u578b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u2460\u56e0\u4e3aUDP\u4e0d\u7528\u5efa\u7acb\u8fde\u63a5\uff0c\u56e0\u6b64\u670d\u52a1\u5668\u820d\u5f03accpet()\u548cconnect()\u51fd\u6570<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2461read()\u548cwrite()\u51fd\u6570\u4e5f\u88ab\u820d\u5f03\uff0c\u4e14recv()\u548csend()\u51fd\u6570\u53ea\u80fd\u7528\u4e8eTCP\u901a\u4fe1\uff0c\u56e0\u6b64\u4f7f\u7528recvfrom()\u548csendto()\u51fd\u6570\u66ff\u6362<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2462\u4e0d\u7528\u8bbe\u8ba1\u5e76\u53d1\uff0cUDP\u5b9e\u73b0\u7684\u9ed8\u8ba4\u5c31\u662f\u5e76\u53d1\u670d\u52a1\u5668\uff0c\u56e0\u4e3a\u4e0d\u9700\u8981\u5efa\u7acb\u8fde\u63a5\u4e86<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u76f8\u5173\u51fd\u6570<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><code>ssize_t recvfrom(int sockfd, void *buf, size_t len, int flags,struct sockaddr *src_addr, socklen_t *addrlen);<\/code> \u63a5\u6536\u6570\u636e\uff0c\u540c\u65f6\u83b7\u53d6\u5bf9\u7aef\u5730\u5740\u7ed3\u6784\uff0c\u76f8\u5f53\u4e8eTCP\u4e2d\u7684read() + accept()<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53c2\u6570\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sockfd\uff1a\u5957\u63a5\u5b57<\/li>\n\n\n\n<li>buf\uff1a\u7f13\u51b2\u533a\u5730\u5740<\/li>\n\n\n\n<li>len\uff1a\u7f13\u51b2\u533a\u5927\u5c0f<\/li>\n\n\n\n<li>flags\uff1a0<\/li>\n\n\n\n<li>src_addr\uff1a\u4f20\u51fa\u53c2\u6570\uff0c\u5bf9\u7aef\u5730\u5740\u7ed3\u6784(\u5982\u679c\u4e0d\u5173\u5fc3\u5bf9\u7aef\u5730\u5740\u7ed3\u6784\uff0c\u4e00\u822c\u662f\u5ba2\u6237\u7aef\u8c03\u7528\u8be5\u51fd\u6570\u65f6\uff0c\u8be5\u53c2\u6570\u4f20NULL)<\/li>\n\n\n\n<li>addrlen\uff1a\u4f20\u5165\u4f20\u51fa\u53c2\u6570(\u56e0\u6b64\u662f\u6307\u9488\u7c7b\u578b)\uff0c\u5730\u5740\u7ed3\u6784\u5927\u5c0f(\u5982\u679c\u4e0d\u5173\u5fc3\u5bf9\u7aef\u5730\u5740\u7ed3\u6784\uff0c\u8be5\u53c2\u6570\u4f200)<br>  <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd4\u56de\u503c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6210\u529f\uff1a\u63a5\u6536\u6570\u636e\u5b57\u8282\u6570<\/li>\n\n\n\n<li>\u5931\u8d25\uff1a-1\uff0cerrno<\/li>\n\n\n\n<li>0\uff1a\u8bf4\u660e\u5bf9\u7aef\u5173\u95ed(\u8ddfread\u51fd\u6570\u4e00\u6837)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><code>ssize_t sendto(int sockfd, const void *buf, size_t len, int flags,const struct sockaddr *dest_addr, socklen_t addrlen);<\/code> \u53d1\u9001\u6570\u636e\uff0c\u76f8\u5f53\u4e8eTCP\u4e2d\u7684write() + connect()<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53c2\u6570\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>sockfd\uff1a \u5957\u63a5\u5b57<\/li>\n\n\n\n<li>buf\uff1a\u5b58\u50a8\u6570\u636e\u7684\u7f13\u51b2\u533a<\/li>\n\n\n\n<li>len\uff1a\u6570\u636e\u957f\u5ea6<\/li>\n\n\n\n<li>flags\uff1a0<\/li>\n\n\n\n<li>src_addr\uff1a\u4f20\u5165\u53c2\u6570\uff0c\u76ee\u6807\u5730\u5740\u7ed3\u6784<\/li>\n\n\n\n<li>addrlen\uff1a\u5730\u5740\u7ed3\u6784\u957f\u5ea6<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd4\u56de\u503c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6210\u529f\uff1a\u6210\u529f\u5199\u51fa\u6570\u636e\u5b57\u8282\u6570<\/li>\n\n\n\n<li>\u5931\u8d25\uff1a-1\uff0cerrno<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u601d\u8def\u5206\u6790<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>server\uff1a<\/em><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u4f2a\u4ee3\u7801 {\n    lfd = socket(AF_INET, <strong>SOCK_DGRAM<\/strong>, 0); \/\/\u6ce8\u610f\u7b2c\u4e8c\u4e2a\u53c2\u6570\u53d8\u4e86\uff0c\u6539\u4e3a\u4ee5UDP\u4e3a\u4ee3\u8868\u7684\u62a5\u5f0f\u534f\u8bae\n    bind();\n    listen(); \/\/\u53ef\u6709\u53ef\u65e0(\u56e0\u4e3a\u4e0d\u9700\u8981\u4e09\u6b21\u63e1\u624b\u4e86\uff0c\u4e5f\u5c31\u4e0d\u9700\u8981\u8bbe\u7f6e\u8fde\u63a5\u4e0a\u9650\u4e86)\n\n    while\uff081\uff09{\n        recvfrom()  \n        \/\/\u6570\u636e\u5904\u7406\n        sendto() \n    }\n    close();\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>client\uff1a<\/em><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u4f2a\u4ee3\u7801 {\n    connect_fd = socket(AF_INET, SOCK_DGRAM, 0);\n    sendto();\n    recvfrom();\n    \u5199\u5230\u5c4f\u5e55\n    close();\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u4ee3\u7801\u5b9e\u73b0<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>server\uff1a<\/em><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;stdio.h&gt;\n#include&lt;stdlib.h&gt;\n#include&lt;string.h&gt;\n#include&lt;unistd.h&gt;\n#include&lt;sys\/socket.h&gt;\n#include&lt;ctype.h&gt;\n#include&lt;arpa\/inet.h&gt;\n\n#define SERV_PORT 9527\n\nint main(int argc, char *argv&#91;]) {\n    int sockfd = 0;\n    int ret, i;\n    char buf&#91;BUFSIZ], client_IP&#91;1024];\n\n    struct sockaddr_in serv_addr, clit_addr;\n    socklen_t clit_addr_len;\n\n    bzero(&amp;serv_addr, sizeof(serv_addr));\n    serv_addr.sin_family =  AF_INET;\n    serv_addr.sin_port = htons(SERV_PORT);\n    serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);\n\n    sockfd = socket(AF_INET, SOCK_DGRAM, 0);\n\n    bind(sockfd, (struct sockaddr *)&amp;serv_addr, sizeof(serv_addr));\n\n    clit_addr_len = sizeof(clit_addr);\n\n    while(1) {\n        ret = recvfrom(sockfd, buf, sizeof(buf), 0, (struct sockaddr *)&amp;clit_addr, &amp;clit_addr_len);\n        \/\/\u8f93\u51fa\u67e5\u770b\u5ba2\u6237\u7aef\u5730\u5740\u7ed3\u6784\n        printf(\"client ip:%s port:%d\\n\",\n                    inet_ntop(AF_INET, &amp;clit_addr.sin_addr.s_addr, client_IP, sizeof(client_IP)),\n                    ntohs(clit_addr.sin_port));\n        for(i = 0; i &lt; ret; i++) {\n            buf&#91;i] = toupper(buf&#91;i]);\n        }\n        sendto(sockfd, buf, ret, 0, (struct sockaddr *)&amp;clit_addr, clit_addr_len);\n    }\n\n    close(sockfd);\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>client\uff1a<\/em><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;stdio.h&gt;\n#include&lt;stdlib.h&gt;\n#include&lt;string.h&gt;\n#include&lt;unistd.h&gt;\n#include&lt;sys\/socket.h&gt;\n#include&lt;ctype.h&gt;\n#include&lt;arpa\/inet.h&gt;\n\n#define SERV_PORT 9527\n#define SERV_IP \"127.0.0.1\"\n\nint main(int argc, char *argv&#91;]) {\n    int sockfd = 0;\n    int ret;\n    char buf&#91;BUFSIZ];\n    struct sockaddr_in serv_addr;\n\n    bzero(&amp;serv_addr, sizeof(serv_addr));\n    serv_addr.sin_family =  AF_INET; \/\/\u6307\u5b9a\u670d\u52a1\u5668\u7684\u5730\u5740\u7ed3\u6784\n    serv_addr.sin_port = htons(SERV_PORT);\n    inet_pton(AF_INET, SERV_IP, &amp;serv_addr.sin_addr.s_addr);\n\n    sockfd = socket(AF_INET, SOCK_DGRAM, 0);\n\n    while(1) {\n        fgets(buf, sizeof(buf), stdin); \/\/\u4ece\u5c4f\u5e55\u8f93\u5165\u8981\u8ba9\u670d\u52a1\u5668\u5904\u7406\u7684\u6570\u636e\n        sendto(sockfd, buf, strlen(buf), 0, (struct sockaddr *)&amp;serv_addr, sizeof(serv_addr)); \/\/strlen\u4ee3\u8868\u4ece\u5c4f\u5e55\u5199\u5165\u6570\u636e\u540e\u7f13\u51b2\u533a\u5b9e\u9645\u7684\u5927\u5c0f\uff0c\u800c\u4e0d\u662f\u5bb9\u91cf\n        ret = recvfrom(sockfd, buf, sizeof(buf), 0, NULL, 0); \/\/\u7528\u4e0d\u5230\u5bf9\u7aef\u670d\u52a1\u5668\u7684\u5730\u5740\u7ed3\u6784\u4e86\uff0c\u4f20\u51fa\u53c2\u6570\u4f20NULL\n        write(STDOUT_FILENO, buf, ret);\n    }\n\n    close(sockfd);\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">socket IPC(\u672c\u5730\u5957\u63a5\u5b57domin)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6982\u8bba<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IPC\u65b9\u6cd5\uff1a pipe\u3001fifo\u3001mmap\u3001\u4fe1\u53f7\u3001<strong>\u672c\u5730\u5957\u63a5\u5b57<\/strong>\uff08domain\uff09 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u6bd4\u7f51\u7edc\u7f16\u7a0bTCP C\/S\u6a21\u578b\uff0c \u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>int socket(int domain, int type, int protocol); \n<ul class=\"wp-block-list\">\n<li>domain\uff1aAF_INET\u6539\u4e3aAF_UNIX\/AF_LOCAL<\/li>\n\n\n\n<li>type\uff1aSOCK_STREAM\u6216SOCK_DGRAM\u90fd\u53ef\u4ee5 <\/li>\n\n\n\n<li>protocol\uff1a\u4f9d\u7136\u9ed8\u8ba4\u4f200<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5730\u5740\u7ed3\u6784\u7c7b\u578b\u7531so ckaddr_in\u6539\u4e3asockaddr_un\uff0c\u4f9d\u7136\u662f\u7ed3\u6784\u4f53\uff0c\u4f46\u53ea\u6709\u4e24\u4e2a\u6210\u5458\u53d8\u91cf\n<ul class=\"wp-block-list\">\n<li>struct sockaddr_in srv_addr; \u2192 struct sockaddr_un srv_adrr; \n<ul class=\"wp-block-list\">\n<li>srv_addr.sin_family = AF_INET; \u2192 srv_addr.sun_family = AF_UNIX;<\/li>\n\n\n\n<li>srv_addr.sin_port = htons(8888);srv_addr.sin_addr.s_addr = htonl(INADDR_ANY); \u2192 strcpy(srv_addr.sun_path, SERV_ADDR)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>bind()\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u4e0d\u80fd\u7528sizeof()\n<ul class=\"wp-block-list\">\n<li>len = offsetof(struct sockaddr_un, sun_path) + strlen(srvaddr.sun_path); \/\/sockaddr_un\u4e2d16\u4f4d\u7684sun_family+\u8def\u5f84\u6587\u4ef6\u540dsun_path\u5927\u5c0f\n<ul class=\"wp-block-list\">\n<li>offsetof\u51fd\u6570\u4f5c\u7528\u662f\u6c42\u7ed3\u6784\u4f53struct sockaddr_un\u4e2d\u7b2c\u4e8c\u4e2a\u6210\u5458\u53d8\u91cfsun_path\u504f\u79fb\u4e86\u591a\u5c11\uff0c\u4e5f\u5c31\u662f\u6c42\u7b2c\u4e00\u4e2a\u6210\u5458\u53d8\u91cfsun_family\u7684\u5927\u5c0f<\/li>\n\n\n\n<li>\u65e2\u7136\u77e5\u9053sun_family\u5927\u5c0f\u662f16\u4f4d\uff0c\u4e3a\u4ec0\u4e48\u4e0d\u628aoffsetof(struct sockaddr_un, sun_path)\u76f4\u63a5\u5199\u62102\u5462\uff1f\u56e0\u4e3a\u4e0d\u8ba9\uff0c\u90a3\u6837\u5c31\u6210\u786c\u7f16\u7801\u4e86<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>bind(fd, (struct sockaddr *)&amp;srv_addr, sizeof(srv_addr)); \u2192 bind(fd, (struct sockaddr *)&amp;srv_addr, len);<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5728\u672c\u5730\u5957\u63a5\u5b57\u4e2d\uff0cbind()\u51fd\u6570\u8c03\u7528\u6210\u529f\u540e\u4f1a\u521b\u5efa\u4e00\u4e2asocket\uff0c\u56e0\u6b64\u4e3a\u4fdd\u8bc1bind()\u6210\u529f\uff0c\u901a\u5e38\u6211\u4eec\u5728bind()\u4e4b\u524d\uff0c\u53ef\u4ee5\u4f7f\u7528unlink(SERV_ADDR)\u5c06\u8def\u5f84\u6587\u4ef6\u540d\u5220\u9664\uff0c\u786e\u4fdd\u5728bind()\u524dserv.sock\u6587\u4ef6\u4e0d\u5b58\u5728<\/li>\n\n\n\n<li>\u5ba2\u6237\u7aef\u4e0d\u80fd\u4f9d\u8d56\u201c\u9690\u5f0f\u7ed1\u5b9a\u201d\uff0c\u56e0\u6b64\u5728\u901a\u4fe1\u5efa\u7acb\u8fc7\u7a0b\u4e2d\uff0c\u9700\u8981\u521b\u5efa\u5e76\u521d\u59cb\u5316\u4e24\u4e2a\u5730\u5740\u7ed3\u6784\uff1a\u2460client_addr\u7528\u4e8ebind()\u751f\u6210\u5957\u63a5\u5b57 \u2461server_addr\u7528\u4e8econnect()\u8fde\u63a5\u901a\u4fe1<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ee3\u7801\u5b9e\u73b0<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">server<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;sys\/socket.h&gt;\n#include &lt;strings.h&gt;\n#include &lt;string.h&gt;\n#include &lt;ctype.h&gt;\n#include &lt;arpa\/inet.h&gt;\n#include &lt;sys\/un.h&gt;\n#include &lt;stddef.h&gt;\n\n#include \"wrap.h\"\n\n#define SERV_ADDR  \"serv.socket\"\n\nint main(void) {\n    int lfd, cfd, len, size, i;\n    struct sockaddr_un servaddr, cliaddr;\n    char buf&#91;4096];\n\n    lfd = Socket(AF_UNIX, SOCK_STREAM, 0);\n\n    bzero(&amp;servaddr, sizeof(servaddr));\n    servaddr.sun_family = AF_UNIX;\n    strcpy(servaddr.sun_path, SERV_ADDR);\n\n    len = offsetof(struct sockaddr_un, sun_path) + strlen(servaddr.sun_path);     \/* servaddr total len *\/\n\n    unlink(SERV_ADDR);                              \/* \u786e\u4fddbind\u4e4b\u524dserv.sock\u6587\u4ef6\u4e0d\u5b58\u5728,bind\u4f1a\u521b\u5efa\u8be5\u6587\u4ef6 *\/\n    Bind(lfd, (struct sockaddr *)&amp;servaddr, len);           \/* \u53c23\u4e0d\u80fd\u662fsizeof(servaddr) *\/\n\n    Listen(lfd, 20);\n\n    printf(\"Accept ...\\n\");\n    while (1) {\n        len = sizeof(cliaddr);  \/\/AF_UNIX\u5927\u5c0f+108B\n\n        cfd = Accept(lfd, (struct sockaddr *)&amp;cliaddr, (socklen_t *)&amp;len);\n\n        len -= offsetof(struct sockaddr_un, sun_path);      \/* \u5f97\u5230\u6587\u4ef6\u540d\u7684\u957f\u5ea6 *\/\n        cliaddr.sun_path&#91;len] = '\\0';                       \/* \u786e\u4fdd\u6253\u5370\u65f6,\u6ca1\u6709\u4e71\u7801\u51fa\u73b0 *\/\n\n        printf(\"client bind filename %s\\n\", cliaddr.sun_path);\n\n        while ((size = read(cfd, buf, sizeof(buf))) &gt; 0) {\n            for (i = 0; i &lt; size; i++)\n                buf&#91;i] = toupper(buf&#91;i]);\n            write(cfd, buf, size);\n        }\n        close(cfd);\n    }\n    close(lfd);\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">client<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h&gt;\n#include &lt;unistd.h&gt;\n#include &lt;sys\/types.h&gt;         \n#include &lt;sys\/socket.h&gt;\n#include &lt;strings.h&gt;\n#include &lt;string.h&gt;\n#include &lt;ctype.h&gt;\n#include &lt;arpa\/inet.h&gt;\n#include &lt;sys\/un.h&gt;\n#include &lt;stddef.h&gt;\n\n#include \"wrap.h\"\n\n#define SERV_ADDR \"serv.socket\"\n#define CLIE_ADDR \"clie.socket\"\n\nint main(void) {\n    int  cfd, len;\n    struct sockaddr_un servaddr, cliaddr;\n    char buf&#91;4096];\n\n    cfd = Socket(AF_UNIX, SOCK_STREAM, 0);\n\n    bzero(&amp;cliaddr, sizeof(cliaddr));\n    cliaddr.sun_family = AF_UNIX;\n    strcpy(cliaddr.sun_path,CLIE_ADDR);\n\n    len = offsetof(struct sockaddr_un, sun_path) + strlen(cliaddr.sun_path);     \/* \u8ba1\u7b97\u5ba2\u6237\u7aef\u5730\u5740\u7ed3\u6784\u6709\u6548\u957f\u5ea6 *\/\n\n    unlink(CLIE_ADDR);\n    Bind(cfd, (struct sockaddr *)&amp;cliaddr, len);                                 \/* \u5ba2\u6237\u7aef\u4e5f\u9700\u8981bind, \u4e0d\u80fd\u4f9d\u8d56\u81ea\u52a8\u7ed1\u5b9a*\/\n\n    \n    bzero(&amp;servaddr, sizeof(servaddr));                                          \/* \u6784\u9020server \u5730\u5740 *\/\n    servaddr.sun_family = AF_UNIX;\n    strcpy(servaddr.sun_path, SERV_ADDR);\n\n    len = offsetof(struct sockaddr_un, sun_path) + strlen(servaddr.sun_path);   \/* \u8ba1\u7b97\u670d\u52a1\u5668\u7aef\u5730\u5740\u7ed3\u6784\u6709\u6548\u957f\u5ea6 *\/\n\n    Connect(cfd, (struct sockaddr *)&amp;servaddr, len);\n\n    while (fgets(buf, sizeof(buf), stdin) != NULL) {\n        write(cfd, buf, strlen(buf));\n        len = read(cfd, buf, sizeof(buf));\n        write(STDOUT_FILENO, buf, len);\n    }\n\n    close(cfd);\n\n    return 0;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7ebf\u7a0b\u6c60\u5e76\u53d1\u670d\u52a1\u5668 \u4e3a\u4ec0\u4e48\u8981\u5f15\u5165\u7ebf\u7a0b\u6c60\uff0c\u4e0d\u76f4\u63a5\u7528\u4e4b\u524d\u7684\u591a\u7ebf\u7a0b\u5e76\u53d1\uff1f \u56e0\u4e3a\u591a\u7ebf\u7a0b\u5e76\u53d1\u8981\u9891\u7e41\u5730\u5bf9\u7ebf\u7a0b\u8fdb\u884c\u521b\u5efa\u4e0e\u9500\u6bc1( [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[56,21,60,57,50],"class_list":["post-1690","post","type-post","status-publish","format-standard","hentry","category-linux","tag-epoll","tag-linux","tag-udp","tag-57","tag-50"],"_links":{"self":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/1690","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1690"}],"version-history":[{"count":33,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/1690\/revisions"}],"predecessor-version":[{"id":2027,"href":"https:\/\/guapicoding.com\/index.php?rest_route=\/wp\/v2\/posts\/1690\/revisions\/2027"}],"wp:attachment":[{"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/guapicoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}