| "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>: Feb 22 02:54PM -0800 On 2/22/2021 12:20 AM, Bonita Montero wrote: >> You are familiar with reader/writer priority on rwmutex right? My impl >> alternates them in batches. > That doesn't make fairness. My version of "fairness", or being "starvation free", is when readers cannot starve out writers, and vise versa. Oh well. :^) |
| Bonita Montero <Bonita.Montero@gmail.com>: Feb 23 08:38AM +0100 > My version of "fairness", or being "starvation free", is when readers > cannot starve out writers, and vise versa. Oh well. :^) That's impossible to implement. Readers or writers can hold the mutex as long as they want. |
| "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>: Feb 23 12:25AM -0800 On 2/22/2021 11:38 PM, Bonita Montero wrote: >> cannot starve out writers, and vise versa. Oh well. :^) > That's impossible to implement. > Readers or writers can hold the mutex as long as they want. We just have radically different versions of what it means to be starvation free. :^) |
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