{"id":477692,"date":"2023-08-09T09:18:51","date_gmt":"2023-08-09T09:18:51","guid":{"rendered":""},"modified":"2023-09-05T11:15:14","modified_gmt":"2023-09-05T11:15:14","slug":"interrupt","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/interrupt\/","title":{"rendered":"\u6253\u65ad"},"content":{"rendered":"<p>\u4e2d\u65ad\u662f\u8ba1\u7b97\u673a\u79d1\u5b66\u548c\u7535\u5b50\u5b66\u4e2d\u7684\u4e00\u4e2a\u57fa\u672c\u6982\u5ff5\uff0c\u6307\u7684\u662f\u786c\u4ef6\u6216\u8f6f\u4ef6\u53d1\u51fa\u7684\u4fe1\u53f7\uff0c\u8bf7\u6c42\u4e2d\u592e\u5904\u7406\u5668 (CPU) \u6ce8\u610f\u3002\u53d1\u751f\u4e2d\u65ad\u65f6\uff0cCPU \u4f1a\u6682\u505c\u5176\u5f53\u524d\u4efb\u52a1\u5e76\u5207\u6362\u5230\u5904\u7406\u4e2d\u65ad\u8bf7\u6c42\u3002\u4e2d\u65ad\u5728\u591a\u4efb\u52a1\u5904\u7406\u4e2d\u8d77\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\uff0c\u4f7f\u8bbe\u5907\u548c\u5e94\u7528\u7a0b\u5e8f\u80fd\u591f\u6709\u6548\u5730\u4e0e CPU 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(IRQ)<\/strong>\uff1a\u4e2d\u65ad\u8bbe\u5907\u6216\u8f6f\u4ef6\u5411CPU\u53d1\u9001\u4e2d\u65ad\u8bf7\u6c42\uff08IRQ\uff09\u4fe1\u53f7\uff0c\u8868\u793a\u9700\u8981\u6ce8\u610f\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e2d\u65ad\u63a7\u5236\u5668<\/strong>\uff1aCPU \u63a5\u6536 IRQ 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\u4f1a\u5c06\u4e2d\u65ad\u4efb\u52a1\u7684\u5f53\u524d\u72b6\u6001\uff08\u5305\u62ec\u5176\u7a0b\u5e8f\u8ba1\u6570\u5668\u548c\u5bc4\u5b58\u5668\u503c\uff09\u4fdd\u5b58\u5728\u79f0\u4e3a\u8fdb\u7a0b\u63a7\u5236\u5757 (PCB) \u7684\u6570\u636e\u7ed3\u6784\u4e2d\u3002\u8fd9\u6837 CPU \u4fbf\u53ef\u4ee5\u5728\u7a0d\u540e\u6062\u590d\u4efb\u52a1\uff0c\u800c\u4e0d\u4f1a\u4e22\u5931\u5176\u8fdb\u5ea6\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e2d\u65ad\u786e\u8ba4<\/strong>\uff1a\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u5b8c\u6210\u5176\u4efb\u52a1\u540e\uff0cCPU \u786e\u8ba4\u4e2d\u65ad\u5e76\u6062\u590d\u88ab\u4e2d\u65ad\u4efb\u52a1\u7684\u4e0a\u4e0b\u6587\u3002\u7136\u540e CPU \u4ece\u88ab\u4e2d\u65ad\u7684\u4f4d\u7f6e\u6062\u590d\u4efb\u52a1\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u4e2d\u65ad\u5173\u952e\u7279\u6027\u5206\u6790<\/h2>\n<p>\u4e2d\u65ad\u63d0\u4f9b\u4e86\u51e0\u4e2a\u6709\u52a9\u4e8e\u63d0\u9ad8\u73b0\u4ee3\u8ba1\u7b97\u673a\u7cfb\u7edf\u6548\u7387\u548c\u54cd\u5e94\u80fd\u529b\u7684\u5173\u952e\u7279\u6027\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u5f02\u6b65\u901a\u4fe1<\/strong>\uff1a\u4e2d\u65ad\u5141\u8bb8\u8bbe\u5907\u548c\u8f6f\u4ef6\u4e0e CPU \u5f02\u6b65\u901a\u4fe1\uff0c\u786e\u4fdd\u53ca\u65f6\u5904\u7406\u5173\u952e\u4efb\u52a1\uff0c\u800c\u65e0\u9700\u7b49\u5f85 CPU \u6301\u7eed\u8f6e\u8be2\u8bbe\u5907\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4f18\u5148\u5904\u7406<\/strong>\uff1a\u53ef\u4ee5\u5bf9\u4e2d\u65ad\u8fdb\u884c\u4f18\u5148\u7ea7\u6392\u5e8f\uff0c\u786e\u4fdd\u9ad8\u4f18\u5148\u7ea7\u4e2d\u65ad\u5148\u4e8e\u4f4e\u4f18\u5148\u7ea7\u4e2d\u65ad\u5f97\u5230\u670d\u52a1\u3002\u8fd9\u6709\u52a9\u4e8e\u6709\u6548\u7ba1\u7406\u65f6\u95f4\u5173\u952e\u578b\u4e8b\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e8b\u4ef6\u9a71\u52a8\u67b6\u6784<\/strong>\uff1a\u4e2d\u65ad\u652f\u6301\u4e8b\u4ef6\u9a71\u52a8\u7f16\u7a0b\uff0c\u5176\u4e2d\u5e94\u7528\u7a0b\u5e8f\u54cd\u5e94\u7279\u5b9a\u4e8b\u4ef6\uff08\u4f8b\u5982\u7528\u6237\u8f93\u5165\u6216\u786c\u4ef6\u4fe1\u53f7\uff09\uff0c\u800c\u4e0d\u662f\u9075\u5faa\u7ebf\u6027\u5e8f\u5217\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8d44\u6e90\u9ad8\u6548\u5229\u7528<\/strong>\uff1a\u901a\u8fc7\u4ec5\u5728\u5fc5\u8981\u65f6\u6682\u505c\u4efb\u52a1\uff0c\u4e2d\u65ad\u53ef\u4ee5\u66f4\u597d\u5730\u5229\u7528 CPU \u8d44\u6e90\uff0c\u907f\u514d\u5728\u8f6e\u8be2\u4e0a\u6d6a\u8d39\u5468\u671f\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5b9e\u65f6\u5904\u7406<\/strong>\uff1a\u4e2d\u65ad\u5728\u5b9e\u65f6\u7cfb\u7edf\u4e2d\u8d77\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\uff0c\u5728\u5b9e\u65f6\u7cfb\u7edf\u4e2d\u53ca\u65f6\u54cd\u5e94\u5916\u90e8\u4e8b\u4ef6\u81f3\u5173\u91cd\u8981\uff0c\u4f8b\u5982\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u6216\u673a\u5668\u4eba\u6280\u672f\u4e2d\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u4e2d\u65ad\u7c7b\u578b<\/h2>\n<p>\u4e2d\u65ad\u53ef\u4ee5\u6839\u636e\u5176\u6765\u6e90\u548c\u529f\u80fd\u5206\u4e3a\u591a\u79cd\u7c7b\u578b\u3002\u4ee5\u4e0b\u662f\u5e38\u89c1\u4e2d\u65ad\u7c7b\u578b\u7684\u5217\u8868\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7c7b\u578b<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u786c\u4ef6\u4e2d\u65ad<\/td>\n<td>\u7531\u5916\u90e8\u786c\u4ef6\u8bbe\u5907\u751f\u6210\u4ee5\u8bf7\u6c42 CPU \u6ce8\u610f\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8f6f\u4ef6\u4e2d\u65ad<\/td>\n<td>\u7531\u8f6f\u4ef6\u5e94\u7528\u7a0b\u5e8f\u751f\u6210\uff0c\u7528\u4e8e\u5411\u64cd\u4f5c\u7cfb\u7edf\u8bf7\u6c42\u670d\u52a1\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u53ef\u5c4f\u853d\u4e2d\u65ad<\/td>\n<td>\u53ef\u4ee5\u88ab CPU 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CPU \u4ea4\u4e92\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4efb\u52a1\u5207\u6362<\/strong>\uff1a\u64cd\u4f5c\u7cfb\u7edf\u4f7f\u7528\u4e2d\u65ad\u6765\u5b9e\u73b0\u591a\u4efb\u52a1\u5904\u7406\uff0c\u5141\u8bb8CPU\u5728\u4e0d\u540c\u7684\u8fdb\u7a0b\u6216\u7ebf\u7a0b\u4e4b\u95f4\u5207\u6362\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5b9e\u65f6\u7cfb\u7edf<\/strong>\uff1a\u5728\u5b9e\u65f6\u7cfb\u7edf\u4e2d\uff0c\u4e2d\u65ad\u5bf9\u4e8e\u5904\u7406\u65f6\u95f4\u5173\u952e\u4e8b\u4ef6\u81f3\u5173\u91cd\u8981\uff0c\u53ef\u786e\u4fdd\u5bf9\u5916\u90e8\u523a\u6fc0\u505a\u51fa\u7acb\u5373\u54cd\u5e94\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u5c3d\u7ba1\u6709\u597d\u5904\uff0c\u4f46\u4f7f\u7528\u4e2d\u65ad\u4e5f\u4f1a\u5e26\u6765\u4e00\u4e9b\u6311\u6218\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u4e2d\u65ad\u5f00\u9500<\/strong>\uff1a\u9891\u7e41\u7684\u4e2d\u65ad\u4f1a\u5e26\u6765\u5f00\u9500\uff0c\u5f71\u54cd\u6574\u4e2a\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e2d\u65ad\u4f18\u5148\u7ea7\u7ba1\u7406<\/strong>\uff1a\u6b63\u786e\u786e\u5b9a\u4e2d\u65ad\u4f18\u5148\u7ea7\u5bf9\u4e8e\u907f\u514d\u8d44\u6e90\u4e89\u7528\u548c\u786e\u4fdd\u53ca\u65f6\u5904\u7406\u9ad8\u4f18\u5148\u7ea7\u4e8b\u4ef6\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e2d\u65ad\u5ef6\u8fdf<\/strong>\uff1a\u5bf9\u4e8e\u65f6\u95f4\u654f\u611f\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e94\u5c3d\u91cf\u7f29\u77ed\u4e2d\u65ad\u8bf7\u6c42\u4e0e\u5176\u5904\u7406\u4e4b\u95f4\u7684\u65f6\u95f4\uff08\u4e2d\u65ad\u5ef6\u8fdf\uff09\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff0c\u7cfb\u7edf\u8bbe\u8ba1\u4eba\u5458\u91c7\u7528\u4e86\u4e2d\u65ad\u5408\u5e76\u3001\u4e2d\u65ad\u62a2\u5360\u548c\u9ad8\u6548\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u7b49\u6280\u672f\u3002<\/p>\n<h2>\u4e3b\u8981\u7279\u70b9\u53ca\u4e0e\u540c\u7c7b\u672f\u8bed\u7684\u5176\u4ed6\u6bd4\u8f83<\/h2>\n<p><strong>\u4e2d\u65ad\u4e0e\u8f6e\u8be2<\/strong>:<\/p>\n<ul>\n<li>\u4e2d\u65ad\u662f\u4e8b\u4ef6\u9a71\u52a8\u7684\u548c\u5f02\u6b65\u7684\uff0c\u800c\u8f6e\u8be2\u662f\u4e00\u79cd\u68c0\u67e5\u4e8b\u4ef6\u7684\u8fde\u7eed\u548c\u540c\u6b65\u7684\u65b9\u6cd5\u3002<\/li>\n<li>\u4e2d\u65ad\u66f4\u52a0\u9ad8\u6548\uff0c\u56e0\u4e3a\u5b83\u4eec\u907f\u514d\u5728\u6301\u7eed\u8f6e\u8be2\u4e0a\u6d6a\u8d39 CPU \u5468\u671f\u3002<\/li>\n<\/ul>\n<p><strong>\u4e2d\u65ad\u4e0e\u5f02\u5e38<\/strong>:<\/p>\n<ul>\n<li>\u4e2d\u65ad\u662f\u786c\u4ef6\u6216\u8f6f\u4ef6\u4ea7\u751f\u7684\u8bf7\u6c42 CPU \u6ce8\u610f\u7684\u5916\u90e8\u4e8b\u4ef6\u3002<\/li>\n<li>\u5f02\u5e38\u662f\u7531\u4e8e\u9519\u8bef\u6761\u4ef6\u6216\u7279\u5b9a\u6307\u4ee4\u800c\u7531 CPU \u672c\u8eab\u5f15\u8d77\u7684\u5185\u90e8\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<p><strong>\u4e2d\u65ad\u4e0e\u9677\u9631<\/strong>:<\/p>\n<ul>\n<li>\u4e2d\u65ad\u7528\u4e8e\u5916\u90e8\u4e8b\u4ef6\uff0c\u800c\u9677\u9631\uff08\u4e5f\u79f0\u4e3a\u8f6f\u4ef6\u4e2d\u65ad\uff09\u7528\u4e8e\u7cfb\u7edf\u8c03\u7528\u7b49\u5185\u90e8\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<h2>\u4e0e\u4e2d\u65ad\u76f8\u5173\u7684\u672a\u6765\u89c2\u70b9\u548c\u6280\u672f<\/h2>\n<p>\u968f\u7740\u8ba1\u7b97\u6280\u672f\u7684\u4e0d\u65ad\u8fdb\u6b65\uff0c\u4e2d\u65ad\u5728\u5904\u7406\u65e5\u76ca\u590d\u6742\u7684\u786c\u4ef6\u548c\u8f6f\u4ef6\u4ea4\u4e92\u65b9\u9762\u4ecd\u5c06\u53d1\u6325\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002\u672a\u6765\u7684\u6280\u672f\u53ef\u80fd\u4fa7\u91cd\u4e8e\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u589e\u5f3a\u7684\u5b9e\u65f6\u529f\u80fd<\/strong>\uff1a\u7814\u7a76\u53ef\u80fd\u4f1a\u6539\u8fdb\u4e2d\u65ad\u5904\u7406\uff0c\u4ee5\u6ee1\u8db3\u5b9e\u65f6\u5e94\u7528\u7684\u4e25\u683c\u8981\u6c42\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8282\u80fd\u4e2d\u65ad\u5904\u7406<\/strong>\uff1a\u51cf\u5c11\u4fbf\u643a\u5f0f\u8bbe\u5907\u548c\u6570\u636e\u4e2d\u5fc3\u7684\u4e2d\u65ad\u5f00\u9500\u548c\u529f\u8017\u7684\u6280\u672f\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u521b\u65b0\u7684\u4f18\u5148\u6392\u5e8f\u673a\u5236<\/strong>\uff1a\u66f4\u590d\u6742\u7684\u4e2d\u65ad\u4f18\u5148\u7ea7\u65b9\u6848\uff0c\u4ee5\u4f18\u5316\u8d44\u6e90\u5229\u7528\u7387\u5e76\u786e\u4fdd\u54cd\u5e94\u80fd\u529b\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u5982\u4f55\u4f7f\u7528\u4ee3\u7406\u670d\u52a1\u5668\u6216\u5c06\u5176\u4e0e\u4e2d\u65ad\u5173\u8054<\/h2>\n<p>\u4ee3\u7406\u670d\u52a1\u5668\u5728\u7ba1\u7406\u7f51\u7edc\u73af\u5883\u4e2d\u7684\u4e2d\u65ad\u65b9\u9762\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\u3002\u5f53\u591a\u4e2a\u5ba2\u6237\u7aef\u901a\u8fc7\u4ee3\u7406\u8bbf\u95ee\u4e92\u8054\u7f51\u65f6\uff0c\u4ee3\u7406\u53ef\u4ee5\u6709\u6548\u5730\u5904\u7406 DNS \u89e3\u6790\u3001\u7f13\u5b58\u5185\u5bb9\u548c\u7ba1\u7406\u8fde\u63a5\u7b49\u4e2d\u65ad\u3002\u901a\u8fc7\u5145\u5f53\u4e2d\u4ecb\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u5e2e\u52a9\u4f18\u5316\u7f51\u7edc\u6d41\u91cf\u5e76\u589e\u5f3a\u6574\u4f53\u6d4f\u89c8\u4f53\u9a8c\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<p>\u6709\u5173\u4e2d\u65ad\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u6d4f\u89c8\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n<ol>\n<li><a href=\"https:\/\/www.tutorialspoint.com\/operating_system\/os_interrupts.htm\" target=\"_new\" rel=\"noopener nofollow\">\u4e2d\u65ad\u548c\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f<\/a><\/li>\n<li><a href=\"https:\/\/www.geeksforgeeks.org\/introduction-of-interrupts-and-traps\/\" target=\"_new\" rel=\"noopener nofollow\">\u4e2d\u65ad\u548c\u9677\u9631\u7b80\u4ecb<\/a><\/li>\n<li><a href=\"https:\/\/www.kernel.org\/doc\/html\/latest\/admin-guide\/hw-vuln\/ia32.html\" target=\"_new\" rel=\"noopener nofollow\">Linux \u4e2d\u7684\u4e2d\u65ad\u5904\u7406<\/a><\/li>\n<\/ol>","protected":false},"featured_media":468680,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477692","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Interrupt: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is an interrupt?","answer":"<p>An interrupt is a signal sent by hardware or software to request the attention of the Central Processing Unit (CPU). It allows devices and applications to communicate with the CPU efficiently, enabling multitasking and event-driven programming.<\/p>"},{"question":"How did interrupts originate?","answer":"<p>The concept of interrupts dates back to the early days of computing in the 1950s. The UNIVAC I computer was among the first to use interrupts to handle external events like input and output operations.<\/p>"},{"question":"How do interrupts work?","answer":"<p>When an interrupt occurs, the CPU suspends its current task and transfers control to an interrupt handler routine. After handling the interrupt, the CPU resumes the interrupted task from where it left off.<\/p>"},{"question":"What are the types of interrupts?","answer":"<p>There are several types of interrupts, including hardware interrupts (from external devices), software interrupts (generated by applications), maskable interrupts (can be disabled), non-maskable interrupts (critical and cannot be masked), edge-triggered (triggered by signal level changes), and level-triggered (remains active as long as the signal is in a specific state).<\/p>"},{"question":"What are the key features of interrupts?","answer":"<p>Interrupts offer asynchronous communication, priority handling, event-driven architecture, efficient resource utilization, and real-time processing capabilities.<\/p>"},{"question":"How can interrupts be used?","answer":"<p>Interrupts are used in various applications, including device interaction, task switching in operating systems, and handling real-time events in critical systems.<\/p>"},{"question":"What are the challenges related to using interrupts?","answer":"<p>Interrupts can introduce overhead, require proper priority management, and may have latency issues. Techniques like interrupt coalescing and efficient handling routines help address these challenges.<\/p>"},{"question":"How do interrupts compare to polling, exceptions, and traps?","answer":"<p>Interrupts are event-driven and asynchronous, while polling is continuous and synchronous. Exceptions are internal events caused by the CPU, while traps are software interrupts.<\/p>"},{"question":"What are the future perspectives of interrupts?","answer":"<p>Future technologies may focus on enhanced real-time capabilities, energy-efficient interrupt handling, and innovative prioritization mechanisms.<\/p>"},{"question":"How are proxy servers associated with interrupts?","answer":"<p>Proxy servers act as intermediaries and can efficiently manage interrupts in networked environments, optimizing network traffic and enhancing the browsing experience.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477692","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477692\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/468680"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=477692"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}