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runtime: handle ENOTSUP/ENOSYS from poll_oneoff in netpoll_wasip1 #78522

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runtime: handle ENOTSUP/ENOSYS from poll_oneoff in netpoll_wasip1 #78522

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24 changes: 16 additions & 8 deletions src/runtime/netpoll_wasip1.go
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,11 @@ import "unsafe"
// Since poll_oneoff is similar to poll(2), the implementation here was derived
// from netpoll_aix.go.

const _EINTR = 27
const (
_EINTR = 27
_ENOSYS = 52
_ENOTSUP = 58
)

var (
evts []event
Expand Down Expand Up @@ -211,17 +215,21 @@ retry:
var nevents size
errno := poll_oneoff(&pollsubs[0], &evts[0], uint32(len(pollsubs)), &nevents)
if errno != 0 {
if errno != _EINTR {
println("errno=", errno, " len(pollsubs)=", len(pollsubs))
throw("poll_oneoff failed")
if errno == _EINTR {
// If a timed sleep was interrupted, just return to
// recalculate how long we should sleep now.
if delay > 0 {
unlock(&mtx)
return gList{}, 0
}
goto retry
}
// If a timed sleep was interrupted, just return to
// recalculate how long we should sleep now.
if delay > 0 {
if errno == _ENOSYS || errno == _ENOTSUP {
unlock(&mtx)
return gList{}, 0
}
goto retry
println("errno=", errno, " len(pollsubs)=", len(pollsubs))
throw("poll_oneoff failed")
}

var toRun gList
Expand Down