when watching Modern operating system, there are the following: conditional variables (unlike semaphores) will not exist in memory . If you send a semaphore to a semaphore that no thread is waiting for, the signal will be lost I would like to ask y...
on Linux, while executing sem_timewait (), will the current thread sleep, choose another thread to execute, or block in place until it times out? after the timeout, if the lock has not been acquired, do you sleep or block the current process? ...
spin locks are easy to understand, which is constantly polling, so what is the mechanism of mutexes? What are the drawbacks of this mechanism that make it better to use spin locks in some situations? ...
for example, [ [1meme 2meme 3] , [4pje 5pje 6], [7pje 8pje 9], [10pr 11pje 12]] merge into one big list [1pint 2pint 3Min 4Min 5Min 6, 7pint 8pens, 10pr 11] suppose that the length of the list is 20000, how to merge more quickly use the list d...
excuse me: fdisk-l disk dev sda , disk dev mapper centos-root , disk dev mapper centos-swap , disk dev mapper centos-swap these four disks: -sharp fdisk -l dev sda:1000.2 GB, 1000204886016 1953525168 Units = of 1 * 512 = 512 bytes (...
scenario: fetch tocken token question: fetch async await ...
problem description CentOs7 system, shell script implements one-click deployment of workerman the environmental background of the problems and what methods you have tried CentOs7 system try Baidu to find information but failed to solve related ...
logstash analysis log. the log is as follows: 2018-07-19 14:02:12.577|INFO |[164acb702b5-12] - crmlog|1234567890|118|0|!|263|xxxx logstash is configured as follows input { file { path => [ "xxxx log.txt" ] start_position =>...