Releases: golang-design/mainthread
Releases · golang-design/mainthread
v0.3.0
Support capturing panics. Here is a documentation of usage:
If a given function triggers a panic and is called via mainthread.Call
,
the panic will propagate to the same goroutine. One can capture
that panic, when possible:
defer func() {
if r := recover(); r != nil {
println(r)
}
}()
mainthread.Call(func() { ... }) // if panic
If the given function triggers a panic, and called via mainthread.Go
,
then the panic will be cached internally, until a call to the Error()
method:
mainthread.Go(func() { ... }) // if panics
// ... do stuff ...
if err := mainthread.Error(); err != nil { // can be captured here.
println(err)
}
Note that a panic happens before mainthread.Error()
returning the
panicked error. If one needs to guarantee mainthread.Error()
indeed
captured the panic, a dummy function can be used as synchornization:
mainthread.Go(func() { panic("die") }) // if panics
mainthread.Call(func() {}) // for execution synchronization
err := mainthread.Error() // err must be non-nil
It is possible to cache up to a maximum of 42 panicked errors.
More errors are ignored.