{"id":477693,"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-handler","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/interrupt-handler\/","title":{"rendered":"x\u1eed l\u00fd ng\u1eaft"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 quy tr\u00ecnh d\u1ecbch v\u1ee5 ng\u1eaft (ISR), l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh v\u00e0 h\u1ec7 \u0111i\u1ec1u h\u00e0nh. N\u00f3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c ng\u1eaft ph\u1ea7n c\u1ee9ng, l\u00e0 c\u00e1c t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi c\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng \u0111\u1ec3 y\u00eau c\u1ea7u s\u1ef1 ch\u00fa \u00fd c\u1ee7a CPU. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o l\u1ecbch s\u1eed, c\u1ea5u tr\u00fac b\u00ean trong, c\u00e1c t\u00ednh n\u0103ng ch\u00ednh, lo\u1ea1i, \u1ee9ng d\u1ee5ng v\u00e0 tri\u1ec3n v\u1ecdng trong t\u01b0\u01a1ng lai c\u1ee7a Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft. H\u01a1n n\u1eefa, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 c\u00e1ch s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 proxy k\u1ebft h\u1ee3p v\u1edbi tr\u00ecnh x\u1eed l\u00fd Ng\u1eaft \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt m\u1ea1ng.<\/p>\n<h2>L\u1ecbch s\u1eed v\u00e0 ngu\u1ed3n g\u1ed1c<\/h2>\n<p>Kh\u00e1i ni\u1ec7m x\u1eed l\u00fd ng\u1eaft c\u00f3 t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a m\u00e1y t\u00ednh khi c\u00e1c h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng c\u00e1c c\u01a1 ch\u1ebf ng\u1eaft \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c s\u1ef1 ki\u1ec7n quan tr\u1ecdng. Vi\u1ec7c \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean \u0111\u1ebfn vi\u1ec7c x\u1eed l\u00fd ng\u1eaft c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a m\u00e1y t\u00ednh Manchester Mark 1 v\u00e0o n\u0103m 1948, trong \u0111\u00f3 c\u00f3 h\u1ec7 th\u1ed1ng ng\u1eaft \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Khi c\u00f4ng ngh\u1ec7 \u0111i\u1ec7n to\u00e1n ti\u1ebfn b\u1ed9, vi\u1ec7c x\u1eed l\u00fd ng\u1eaft \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a h\u1ec7 \u0111i\u1ec1u h\u00e0nh, cho ph\u00e9p ch\u00fang th\u1ef1c hi\u1ec7n \u0111a nhi\u1ec7m m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 ph\u1ea3n h\u1ed3i c\u00e1c s\u1ef1 ki\u1ec7n ph\u1ea7n c\u1ee9ng kh\u00e1c nhau.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft<\/h2>\n<p>Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft l\u00e0 m\u1ed9t quy tr\u00ecnh ph\u1ea7n m\u1ec1m \u0111\u00e1p \u1ee9ng c\u00e1c ng\u1eaft ph\u1ea7n c\u1ee9ng, \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd \u0111\u00fang c\u00e1ch c\u00e1c s\u1ef1 ki\u1ec7n n\u00e0y m\u00e0 kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n lu\u1ed3ng th\u1ef1c thi ch\u01b0\u01a1ng tr\u00ecnh th\u00f4ng th\u01b0\u1eddng. Khi m\u1ed9t thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng y\u00eau c\u1ea7u s\u1ef1 ch\u00fa \u00fd t\u1eeb CPU, n\u00f3 s\u1ebd g\u1eedi t\u00edn hi\u1ec7u ng\u1eaft. CPU t\u1ea1m d\u1eebng c\u00e1c ho\u1ea1t \u0111\u1ed9ng hi\u1ec7n t\u1ea1i c\u1ee7a n\u00f3, l\u01b0u b\u1ed1i c\u1ea3nh hi\u1ec7n t\u1ea1i v\u00e0 th\u1ef1c thi tr\u00ecnh x\u1eed l\u00fd Ng\u1eaft li\u00ean quan \u0111\u1ebfn ng\u1eaft c\u1ee5 th\u1ec3 \u0111\u00f3. Sau khi tr\u00ecnh x\u1eed l\u00fd ho\u00e0n th\u00e0nh nhi\u1ec7m v\u1ee5 c\u1ee7a n\u00f3, CPU s\u1ebd ti\u1ebfp t\u1ee5c c\u00e1c ho\u1ea1t \u0111\u1ed9ng tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n<h2>C\u1ea5u tr\u00fac v\u00e0 ch\u1ee9c n\u0103ng b\u00ean trong<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a tr\u00ecnh x\u1eed l\u00fd ng\u1eaft c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 ki\u1ebfn tr\u00fac ph\u1ea7n c\u1ee9ng. Tuy nhi\u00ean, ch\u1ee9c n\u0103ng chung c\u1ee7a n\u00f3 v\u1eabn nh\u1ea5t qu\u00e1n. Khi x\u1ea3y ra ng\u1eaft, CPU s\u1ebd th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>\n<p><strong>Ph\u00e1t hi\u1ec7n ng\u1eaft<\/strong>: CPU li\u00ean t\u1ee5c gi\u00e1m s\u00e1t c\u00e1c \u0111\u01b0\u1eddng ng\u1eaft \u0111\u1ec3 ph\u00e1t hi\u1ec7n b\u1ea5t k\u1ef3 t\u00edn hi\u1ec7u ng\u1eaft n\u00e0o \u0111\u1ebfn t\u1eeb c\u00e1c thi\u1ebft b\u1ecb ngo\u1ea1i vi.<\/p>\n<\/li>\n<li>\n<p><strong>L\u01b0u b\u1ed1i c\u1ea3nh<\/strong>: Khi ph\u00e1t hi\u1ec7n ng\u1eaft, CPU s\u1ebd l\u01b0u b\u1ed1i c\u1ea3nh c\u1ee7a quy tr\u00ecnh hi\u1ec7n t\u1ea1i, bao g\u1ed3m b\u1ed9 \u0111\u1ebfm ch\u01b0\u01a1ng tr\u00ecnh, thanh ghi v\u00e0 c\u1edd. B\u01b0\u1edbc n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng CPU sau \u0111\u00f3 c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c t\u00e1c v\u1ee5 b\u1ecb gi\u00e1n \u0111o\u1ea1n m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3ng vect\u01a1 ng\u1eaft<\/strong>: CPU s\u1eed d\u1ee5ng b\u1ea3ng vect\u01a1 ng\u1eaft, c\u1ea5u tr\u00fac d\u1eef li\u1ec7u ch\u1ee9a \u0111\u1ecba ch\u1ec9 c\u1ee7a c\u00e1c tr\u00ecnh x\u1eed l\u00fd Ng\u1eaft kh\u00e1c nhau. B\u1ea3ng \u0111\u01b0\u1ee3c l\u1eadp ch\u1ec9 m\u1ee5c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng s\u1ed1 ng\u1eaft, x\u00e1c \u0111\u1ecbnh tr\u00ecnh x\u1eed l\u00fd c\u1ee5 th\u1ec3 li\u00ean quan \u0111\u1ebfn ng\u1eaft \u0111\u1ebfn.<\/p>\n<\/li>\n<li>\n<p><strong>G\u1ecdi tr\u00ecnh x\u1eed l\u00fd ng\u1eaft<\/strong>: CPU nh\u1ea3y t\u1edbi \u0111\u1ecba ch\u1ec9 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong b\u1ea3ng vect\u01a1 ng\u1eaft t\u01b0\u01a1ng \u1ee9ng v\u1edbi s\u1ed1 ng\u1eaft nh\u1eadn \u0111\u01b0\u1ee3c. \u0110i\u1ec1u n\u00e0y b\u1eaft \u0111\u1ea7u th\u1ef1c hi\u1ec7n tr\u00ecnh x\u1eed l\u00fd ng\u1eaft c\u00f3 li\u00ean quan.<\/p>\n<\/li>\n<li>\n<p><strong>D\u1ecbch v\u1ee5 ng\u1eaft<\/strong>: Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u1eed l\u00fd ng\u1eaft. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c t\u01b0\u01a1ng t\u00e1c v\u1edbi thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng, x\u1eed l\u00fd d\u1eef li\u1ec7u ho\u1eb7c l\u00ean l\u1ecbch c\u00e1c t\u00e1c v\u1ee5 ti\u1ebfp theo.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u00f4i ph\u1ee5c b\u1ed1i c\u1ea3nh<\/strong>: Sau khi ho\u00e0n th\u00e0nh quy tr\u00ecnh d\u1ecbch v\u1ee5 ng\u1eaft, CPU s\u1ebd kh\u00f4i ph\u1ee5c b\u1ed1i c\u1ea3nh c\u1ee7a qu\u00e1 tr\u00ecnh b\u1ecb gi\u00e1n \u0111o\u1ea1n \u0111\u1ec3 ti\u1ebfp t\u1ee5c th\u1ef1c hi\u1ec7n n\u00f3 m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft<\/h2>\n<p>Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng c\u1ea7n thi\u1ebft g\u00f3p ph\u1ea7n v\u00e0o s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh:<\/p>\n<ul>\n<li>\n<p><strong>X\u1eed l\u00fd s\u1ef1 ki\u1ec7n kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/strong>: Ng\u1eaft l\u00e0 c\u00e1c s\u1ef1 ki\u1ec7n kh\u00f4ng \u0111\u1ed3ng b\u1ed9, cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng y\u00eau c\u1ea7u s\u1ef1 ch\u00fa \u00fd c\u1ee7a CPU m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp v\u1edbi ch\u01b0\u01a1ng tr\u00ecnh \u0111ang th\u1ef1c thi.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u1ea3n h\u1ed3i th\u1eddi gian th\u1ef1c<\/strong>: B\u1eb1ng c\u00e1ch ph\u1ea3n h\u1ed3i k\u1ecbp th\u1eddi c\u00e1c s\u1ef1 ki\u1ec7n ph\u1ea7n c\u1ee9ng, tr\u00ecnh x\u1eed l\u00fd ng\u1eaft cho ph\u00e9p x\u1eed l\u00fd theo th\u1eddi gian th\u1ef1c, r\u1ea5t quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng v\u1ec1 th\u1eddi gian nh\u01b0 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p v\u00e0 x\u1eed l\u00fd \u0111a ph\u01b0\u01a1ng ti\u1ec7n.<\/p>\n<\/li>\n<li>\n<p><strong>Qu\u1ea3n l\u00fd \u01b0u ti\u00ean<\/strong>: Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh c\u00e1c m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c t\u00e1c v\u1ee5 quan tr\u1ecdng \u0111\u01b0\u1ee3c x\u1eed l\u00fd tr\u01b0\u1edbc c\u00e1c t\u00e1c v\u1ee5 \u00edt kh\u1ea9n c\u1ea5p h\u01a1n, nh\u1edd \u0111\u00f3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<li>\n<p><strong>Chuy\u1ec3n ng\u1eef c\u1ea3nh<\/strong>: C\u01a1 ch\u1ebf l\u01b0u v\u00e0 kh\u00f4i ph\u1ee5c ng\u1eef c\u1ea3nh c\u1ee7a tr\u00ecnh x\u1eed l\u00fd Ng\u1eaft t\u1ea1o \u0111i\u1ec1u ki\u1ec7n chuy\u1ec3n \u0111\u1ed5i su\u00f4n s\u1ebb gi\u1eefa c\u00e1c ti\u1ebfn tr\u00ecnh, cho ph\u00e9p th\u1ef1c hi\u1ec7n \u0111a nhi\u1ec7m.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i tr\u00ecnh x\u1eed l\u00fd ng\u1eaft<\/h2>\n<p>Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean c\u00e1c ti\u00eau ch\u00ed kh\u00e1c nhau. B\u1ea3ng sau \u0111\u00e2y t\u00f3m t\u1eaft c\u00e1c lo\u1ea1i tr\u00ecnh x\u1eed l\u00fd ng\u1eaft d\u1ef1a tr\u00ean c\u01a1 ch\u1ebf g\u1ecdi c\u1ee7a ch\u00fang:<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>Ki\u1ec3u<\/strong><\/th>\n<th><strong>S\u1ef1 mi\u00eau t\u1ea3<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Ng\u1eaft ph\u1ea7n c\u1ee9ng<\/strong><\/td>\n<td>\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi c\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng \u0111\u1ec3 y\u00eau c\u1ea7u s\u1ef1 ch\u00fa \u00fd c\u1ee7a CPU.<\/td>\n<\/tr>\n<tr>\n<td><strong>Ng\u1eaft ph\u1ea7n m\u1ec1m<\/strong><\/td>\n<td>\u0110\u01b0\u1ee3c g\u1ecdi b\u1edfi c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh ph\u1ea7n m\u1ec1m ho\u1eb7c l\u1ec7nh g\u1ecdi h\u1ec7 th\u1ed1ng \u0111\u1ec3 y\u00eau c\u1ea7u c\u00e1c d\u1ecbch v\u1ee5 c\u1ee5 th\u1ec3 t\u1eeb h\u1ec7 \u0111i\u1ec1u h\u00e0nh.<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u1ea1m b\u1eaby<\/strong><\/td>\n<td>S\u1ef1 gi\u00e1n \u0111o\u1ea1n c\u00f3 ch\u1ee7 \u00fd \u0111\u01b0\u1ee3c CPU k\u00edch ho\u1ea1t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u1eb7c bi\u1ec7t nh\u01b0 l\u1ed7i chia cho s\u1ed1 0.<\/td>\n<\/tr>\n<tr>\n<td><strong>Ng\u1eaft nhanh<\/strong><\/td>\n<td>Ng\u1eaft \u0111\u01b0\u1ee3c \u01b0u ti\u00ean v\u00e0 ph\u1ee5c v\u1ee5 nhanh ch\u00f3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng nh\u00fang.<\/td>\n<\/tr>\n<tr>\n<td><strong>Ng\u1eaft chia s\u1ebb<\/strong><\/td>\n<td>Nhi\u1ec1u thi\u1ebft b\u1ecb chia s\u1ebb c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng ng\u1eaft, y\u00eau c\u1ea7u x\u1eed l\u00fd c\u1ea9n th\u1eadn \u0111\u1ec3 tr\u00e1nh xung \u0111\u1ed9t.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>S\u1eed d\u1ee5ng, th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<h3>C\u00f4ng d\u1ee5ng c\u1ee7a Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft<\/h3>\n<p>Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh hi\u1ec7n \u0111\u1ea1i v\u00e0 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng sau:<\/p>\n<ol>\n<li>\n<p><strong>Qu\u1ea3n l\u00fd ngo\u1ea1i vi<\/strong>: Ch\u00fang h\u1ed7 tr\u1ee3 giao ti\u1ebfp gi\u1eefa CPU v\u00e0 c\u00e1c thi\u1ebft b\u1ecb ngo\u1ea1i vi nh\u01b0 b\u00e0n ph\u00edm, chu\u1ed9t v\u00e0 card m\u1ea1ng.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ed9 h\u1eb9n gi\u1edd v\u00e0 b\u1ed9 l\u1eadp l\u1ecbch<\/strong>: Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 qu\u1ea3n l\u00fd b\u1ed9 h\u1eb9n gi\u1edd v\u00e0 b\u1ed9 l\u1eadp l\u1ecbch t\u00e1c v\u1ee5 c\u1ee7a h\u1ec7 th\u1ed1ng, cho ph\u00e9p th\u1ef1c hi\u1ec7n \u0111a nhi\u1ec7m.<\/p>\n<\/li>\n<li>\n<p><strong>Ho\u1ea1t \u0111\u1ed9ng v\u00e0o\/ra<\/strong>: Ch\u00fang x\u1eed l\u00fd c\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O, \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 gi\u1eefa b\u1ed9 nh\u1edb v\u00e0 b\u1ed9 l\u01b0u tr\u1eef ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c.<\/p>\n<\/li>\n<\/ol>\n<h3>Nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h3>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng tr\u00ecnh x\u1eed l\u00fd ng\u1eaft \u0111\u01b0a ra m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c nh\u1ea5t \u0111\u1ecbnh, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<ol>\n<li>\n<p><strong>Ng\u1eaft qu\u00e1 t\u1ea3i<\/strong>: T\u1ea7n su\u1ea5t ng\u1eaft cao c\u00f3 th\u1ec3 l\u00e0m qu\u00e1 t\u1ea3i CPU, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<li>\n<p><strong>\u01afu ti\u00ean ng\u1eaft<\/strong>: Qu\u1ea3n l\u00fd m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean kh\u00f4ng ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c nhi\u1ec7m v\u1ee5 quan tr\u1ecdng b\u1ecb tr\u00ec ho\u00e3n ho\u1eb7c b\u1ecb b\u1ecf qua.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110i\u1ec1u ki\u1ec7n cu\u1ed9c \u0111ua<\/strong>: Truy c\u1eadp \u0111\u1ed3ng th\u1eddi v\u00e0o c\u00e1c t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c chia s\u1ebb trong Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng ch\u1ee7ng t\u1ed9c v\u00e0 h\u1ecfng d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<\/ol>\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y, c\u00e1c chi\u1ebfn l\u01b0\u1ee3c x\u1eed l\u00fd ng\u1eaft th\u00edch h\u1ee3p, qu\u1ea3n l\u00fd \u01b0u ti\u00ean v\u00e0 c\u01a1 ch\u1ebf \u0111\u1ed3ng b\u1ed9 h\u00f3a \u0111\u01b0\u1ee3c tri\u1ec3n khai trong h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 ki\u1ebfn tr\u00fac ph\u1ea7n c\u1ee9ng.<\/p>\n<h2>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh<\/h2>\n<p>B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y tr\u00ecnh b\u00e0y so s\u00e1nh c\u00e1c tr\u00ecnh x\u1eed l\u00fd ng\u1eaft v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 trong b\u1ed1i c\u1ea3nh h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh:<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>Thu\u1eadt ng\u1eef<\/strong><\/th>\n<th><strong>S\u1ef1 mi\u00eau t\u1ea3<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft<\/strong><\/td>\n<td>Quy tr\u00ecnh ph\u1ea7n m\u1ec1m \u0111\u00e1p \u1ee9ng c\u00e1c ng\u1eaft ph\u1ea7n c\u1ee9ng, \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd \u0111\u00fang c\u00e1c s\u1ef1 ki\u1ec7n ph\u1ea7n c\u1ee9ng.<\/td>\n<\/tr>\n<tr>\n<td><strong>Tr\u00ecnh x\u1eed l\u00fd ngo\u1ea1i l\u1ec7<\/strong><\/td>\n<td>X\u1eed l\u00fd c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u1eb7c bi\u1ec7t nh\u01b0 chia cho 0 ho\u1eb7c truy c\u1eadp b\u1ed9 nh\u1edb kh\u00f4ng h\u1ee3p l\u1ec7, \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd l\u1ed7i m\u1ed9t c\u00e1ch linh ho\u1ea1t.<\/td>\n<\/tr>\n<tr>\n<td><strong>B\u1ed9 x\u1eed l\u00fd t\u00edn hi\u1ec7u<\/strong><\/td>\n<td>Qu\u1ea3n l\u00fd t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi gi\u1eefa c\u00e1c quy tr\u00ecnh trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec1u quy tr\u00ecnh, cho ph\u00e9p li\u00ean l\u1ea1c v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a.<\/td>\n<\/tr>\n<tr>\n<td><strong>Ng\u01b0\u1eddi x\u1eed l\u00fd b\u1eaby<\/strong><\/td>\n<td>X\u1eed l\u00fd c\u1ee5 th\u1ec3 c\u00e1c b\u1eaby, l\u00e0 c\u00e1c gi\u00e1n \u0111o\u1ea1n c\u00f3 ch\u1ee7 \u00fd do CPU g\u00e2y ra do c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u1eb7c bi\u1ec7t.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai<\/h2>\n<p>Khi \u0111i\u1ec7n to\u00e1n ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, vai tr\u00f2 c\u1ee7a tr\u00ecnh x\u1eed l\u00fd ng\u1eaft s\u1ebd v\u1eabn r\u1ea5t quan tr\u1ecdng. Xu h\u01b0\u1edbng x\u1eed l\u00fd ng\u1eaft trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>C\u1ea3i ti\u1ebfn ph\u1ea7n c\u1ee9ng<\/strong>: Ki\u1ebfn tr\u00fac ph\u1ea7n c\u1ee9ng ti\u00ean ti\u1ebfn c\u00f3 th\u1ec3 gi\u1edbi thi\u1ec7u c\u00e1c \u0111\u01a1n v\u1ecb x\u1eed l\u00fd ng\u1eaft chuy\u00ean d\u1ee5ng \u0111\u1ec3 x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>\u1ea2o h\u00f3a gi\u00e1n \u0111o\u1ea1n<\/strong>: C\u00e1c k\u1ef9 thu\u1eadt \u1ea3o h\u00f3a c\u00e1c ng\u1eaft c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n, cho ph\u00e9p x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 trong m\u00f4i tr\u01b0\u1eddng \u1ea3o h\u00f3a.<\/p>\n<\/li>\n<li>\n<p><strong>X\u1eed l\u00fd hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng<\/strong>: Nh\u1eefng \u0111\u1ed5i m\u1edbi trong x\u1eed l\u00fd ng\u1eaft c\u00f3 th\u1ec3 t\u1eadp trung v\u00e0o vi\u1ec7c gi\u1ea3m m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng trong thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 thi\u1ebft b\u1ecb IoT.<\/p>\n<\/li>\n<\/ul>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 tr\u00ecnh x\u1eed l\u00fd ng\u1eaft<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy, gi\u1ed1ng nh\u01b0 c\u00e1c m\u00e1y ch\u1ee7 do OneProxy cung c\u1ea5p, c\u00f3 th\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng, \u0111\u1eb7c bi\u1ec7t khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi c\u00e1c tr\u00ecnh x\u1eed l\u00fd Ng\u1eaft. Khi x\u1eed l\u00fd l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb c\u00e1c ho\u1ea1t \u0111\u1ed9ng I\/O \u0111i\u1ec1u khi\u1ec3n theo ng\u1eaft, trong \u0111\u00f3 tr\u00ecnh x\u1eed l\u00fd ng\u1eaft qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3 vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng v\u00e0 m\u00e1y ch\u1ee7 proxy. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 th\u00f4ng l\u01b0\u1ee3ng m\u1ea1ng v\u00e0 gi\u1ea3m \u0111\u1ed9 tr\u1ec5 b\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i theo th\u1eddi gian th\u1ef1c c\u1ee7a tr\u00ecnh x\u1eed l\u00fd Ng\u1eaft.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 Tr\u00ecnh x\u1eed l\u00fd ng\u1eaft, ng\u1eaft ph\u1ea7n c\u1ee9ng v\u00e0 n\u1ed9i b\u1ed9 h\u1ec7 \u0111i\u1ec1u h\u00e0nh, h\u00e3y tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/www.geeksforgeeks.org\/interrupts-and-interrupt-handlers\/\" target=\"_new\" rel=\"noopener nofollow\">Ng\u1eaft v\u00e0 x\u1eed l\u00fd ng\u1eaft<\/a><\/li>\n<li><a href=\"https:\/\/www.tutorialspoint.com\/operating_system\/os_process_synchronization.htm\" target=\"_new\" rel=\"noopener nofollow\">Gi\u00e1n \u0111o\u1ea1n trong h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/cdn\/glossary\/reverse-proxy-server\/\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1edbi thi\u1ec7u v\u1ec1 m\u00e1y ch\u1ee7 proxy<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/vn\/\" target=\"_new\" rel=\"noopener\">Trang web ch\u00ednh th\u1ee9c c\u1ee7a OneProxy<\/a><\/li>\n<\/ol>\n<p>T\u00f3m l\u1ea1i, tr\u00ecnh x\u1eed l\u00fd ng\u1eaft l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong \u0111i\u1ec7n to\u00e1n hi\u1ec7n \u0111\u1ea1i, cho ph\u00e9p x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c s\u1ef1 ki\u1ec7n ph\u1ea7n c\u1ee9ng, \u0111a nhi\u1ec7m v\u00e0 kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i theo th\u1eddi gian th\u1ef1c. Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, tr\u00ecnh x\u1eed l\u00fd ng\u1eaft s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong c\u00e1c h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh trong t\u01b0\u01a1ng lai. Khi k\u1ebft h\u1ee3p v\u1edbi m\u00e1y ch\u1ee7 proxy, hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh b\u1ea3o m\u1eadt c\u1ee7a k\u1ebft n\u1ed1i m\u1ea1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c n\u00e2ng cao \u0111\u00e1ng k\u1ec3, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng CNTT m\u1ea1nh m\u1ebd v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>","protected":false},"featured_media":468682,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477693","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Interrupt Handler: A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is an Interrupt handler?","answer":"<p>An Interrupt handler, also known as an interrupt service routine (ISR), is a software routine that responds to hardware interrupts. These interrupts are signals generated by hardware devices to request the attention of the CPU. The Interrupt handler ensures proper handling of these events without disrupting the normal flow of program execution.<\/p>"},{"question":"How does an Interrupt handler work?","answer":"<p>When a hardware device sends an interrupt signal, the CPU suspends its current operations, saves the current context, and jumps to the address of the relevant Interrupt handler. The handler then performs the necessary actions to handle the interrupt, such as interacting with the hardware device or processing data. Once the handler completes its task, the CPU restores the context of the interrupted process and resumes its previous operations.<\/p>"},{"question":"What are the key features of an Interrupt handler?","answer":"<p>Interrupt handlers offer several key features, including:<\/p><ul><li>Asynchronous Event Handling: Interrupts are asynchronous events, allowing hardware devices to request CPU attention independently of the current program.<\/li><li>Real-time Responsiveness: They enable real-time processing, crucial for time-critical applications like industrial control systems.<\/li><li>Priority Management: Interrupt handlers can be assigned different priority levels, ensuring critical tasks are handled promptly.<\/li><li>Context Switching: They facilitate smooth switching between processes, enabling multitasking.<\/li><\/ul>"},{"question":"What types of Interrupt handlers exist?","answer":"<p>Interrupt handlers can be classified into different types based on their invocation mechanism:<\/p><ol><li>Hardware Interrupt: Generated by hardware devices to request CPU attention.<\/li><li>Software Interrupt: Invoked by software programs or system calls to request specific services from the operating system.<\/li><li>Trap: Intentional interrupt triggered by the CPU for exceptional conditions like divide by zero errors.<\/li><li>Fast Interrupt: Prioritized and quickly serviced interrupt used in some embedded systems.<\/li><li>Shared Interrupt: Multiple devices share the same interrupt line, requiring careful handling to avoid conflicts.<\/li><\/ol>"},{"question":"How are Interrupt handlers used, and what are the challenges?","answer":"<p>Interrupt handlers are used in various applications, such as peripheral management, timers and schedulers, and I\/O operations. However, improper handling of interrupts can lead to challenges like interrupt overload, incorrect priority management, and race conditions. These challenges can be mitigated through proper interrupt handling strategies and synchronization mechanisms.<\/p>"},{"question":"How do Interrupt handlers relate to proxy servers?","answer":"<p>Proxy servers, like OneProxy, can leverage Interrupt handlers to enhance network performance and security. By using interrupt-driven I\/O operations, data transfer between network devices and the proxy server can be efficiently managed, improving network throughput and reducing latency.<\/p>"},{"question":"What does the future hold for Interrupt handlers?","answer":"<p>As computing technology advances, the role of Interrupt handlers will remain crucial. Future trends may include hardware improvements, interrupt virtualization, and energy-efficient handling to cater to the needs of evolving computing systems.<\/p><p>For more information about Interrupt handlers, hardware interrupts, and related topics, explore the provided links and resources. Discover the power and potential of Interrupt handlers in modern computing!<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477693","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477693\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468682"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}