I work in DOS for a day (2014)

Re:I work in DOS for a day (2014) by mmastrac on Tuesday July 06, 2021 @02:38PM (#27752589)

Technically, as a single-core CPU, all operations are atomic. /s

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Re:I work in DOS for a day (2014) by Teknoman117 on Tuesday July 06, 2021 @04:30PM (#27753841)

I suppose I should say instructions which let you do critical sections without disabling preemption or interrupts =P

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Re:I work in DOS for a day (2014) by mmastrac on Tuesday July 06, 2021 @05:30PM (#27754548)

Hah yes. I got used to the CLI/STI pattern around perf-sensitive or concurrent code on <=386 back in the day.

EDIT: though I wonder now if you could use the fact that flags are returned from basic memory ALU operations to implement some basic atomics.

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