翻訳と辞書
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・ cooked mode
・ cookie
・ cookie bear
・ cookie file
・ cookie jar
・ cookie monster
・ cooky
・ cool
・ cool:gen
・ cooperative information system
cooperative multitasking
・ coordinate
・ coordinated universal time
・ coordinating committee for intercontinental research networks
・ coordination language
・ copious free time
・ copper
・ copper distributed data interface
・ coprocessor
・ copy and paste


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cooperative multitasking : FOLDOC
cooperative multitasking
A form of multitasking where it is the responsibility of the currently running task to give up the processor to allow other tasks to run. This contrasts with pre-emptive multitasking where the task scheduler periodically suspends the running task and restarts another.
Cooperative multitasking requires the programmer to place calls at suitable points in his code to allow his task to be {deschedule}d which is not always easy if there is no obvious top-level main loop or some routines run for a long time. If a task does not allow itself to be descheduled all other tasks on the system will appear to "freeze" and will not respond to user action.
The advantage of cooperative multitasking is that the programmer knows where the program will be descheduled and can make sure that this will not cause unwanted interaction with other processes. Under pre-emptive multitasking, the scheduler must ensure that sufficient state for each pro


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