Tag：interrupt
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Linux 0.11 source code reading notes – interrupt process
Linux 0.11 source code reading notes – interrupt process What interrupt is it When an interrupt occurs, the computer will stop the currently running program, execute the interrupt handler instead, and then return to the original interrupted program to continue running. Interrupts include hardware interrupts and software interrupts,Hard interruptIt is automatically generated by peripherals,Soft interruptIt […]
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Twice a week: Facebook global service is down again
Following the six hour downtime on October 5, Facebook, instagram, WhatsApp and massage went down again on October 9.Twice a week: Facebook global service was interrupted twice a week: Facebook global service was interrupted again How much do modern people rely on social software? Imagine the day when wechat or other instant messaging and social […]
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Linux 0.11 source code reading notes – block device driver
Block device driver The block device driver is responsible for reading and writing block device data. Kernel code uses buffer blocks to exchange data with block devices (such as disks) indirectly, and buffer data exchanges data with block devices through block device drivers. Management of block devices Block equipment table The kernel passes a block […]
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Linux 0.11 source code reading notes – Summary
summary Linux 0.11 mainly includes two parts: file management and process management. Process management includes memory management, process management and interprocess communication modules. File management includes disk file system and opens file memory data. Disk file system includes free disk block management, file data block management, file metadata management and tree structure directory. Open file […]
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A tutorial on the use of interrupts and returns in Ruby Programming
The use of the keywords return, break, and next involves jumping out of the scope. The difference between them lies in the different target scopes of different keywords. Because there are code blocks, there are some places that need special attention. returnCommon methods Generally, the meaning of the return statement is the same as what […]
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Concurrent programming: threads
Hello, I’m Xiao Hei, a migrant worker who lives on the Internet. Some time ago, the company interviewed people and found that although many small partners have two or three years of work experience, they don’t have a solid grasp of some basic java knowledge, so Xiaohei decided to start sharing some basic Java related […]
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ASCII control character table
Char # digraph # hex # Dec # official name # explain escape character^@Nu # 0x00 # 0 # null (nul) null character \ 0^A # sh # 0x01 # 1 # start of heading (soh)^B # SX # 0x02 # 2 # start of text (STX)^C # ex # 0x03 # 3 # end […]