If I had to process messages from both high and low priority channels I
would serialise then with a min heap and create a consumer process for the
min heap. The min heap seems to be the canonical way of solving the
priority queues anyway, so I think it makes sense here.
Basically: goroutine 1 reads both channels and insert them into the
min-heap. goroutine 2 reads from min heap and do the processing.
Daniela Petruzalek
Software Engineer
github.com/danicat
twitter.com/danicat83
Em qui, 14 de fev de 2019 às 15:34, <kangli...@gmail.com> escreveu:
> select {
> case highVal := <- high:
> case lowVal := <- low:
> if len(high) > 0 {
> for len(high) > 0 {
> highVal := <- high
> }
> }
> // process lowVal
> }
>
>
>
> On Tuesday, July 24, 2012 at 5:16:16 AM UTC+8, Erwin Driessens wrote:
>>
>> Hello,
>>
>> i wonder how to implement channel priorities nicely. Say there are two
>> channels, one with a higher priority than the other, and a goroutine
>> waiting for incoming data on these channels. I have read that select picks
>> a random case when multiple channels are ready. I thought of nesting
>> selects: putting the lower priority select in the default case of the
>> higher priority select, and have the default case of the inner (low
>> priority) select do nothing. This leads to a kind of busy wait loop. I
>> could call a short sleep, but that still isn't very clean. Is there a
>> better way?
>>
>> Why aren't the select cases evaluated in order?
>>
> --
> You received this message because you are subscribed to the Google Groups
> "golang-nuts" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to golang-nuts+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/golang-nuts/CA%2B%3Diygt2bxH1E8fkD5JpPV1vKrz2ns%2BD5KpbhZ_SSm2vK%3Dds3w%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
