Which looks like...?
On Tue, Dec 3, 2019, 4:50 PM Robert Engels <reng...@ix.netcom.com> wrote:
> I would use an atomic and a lock instead of two locks.
>
> > On Dec 3, 2019, at 6:35 PM, burak serdar <bser...@computer.org> wrote:
> >
> > On Tue, Dec 3, 2019 at 5:21 PM Liam Breck <networkimp...@gmail.com>
> wrote:
> >>
> >> I have a problem that is trivially solved via
> >>
> >> door sync.RWMutex
> >>
> >> func Reader() T {
> >> if !door.TryRLock() { // missing in stdlib :-(
> >> return busy
> >> }
> >> defer door.RUnlock()
> >> ...
> >> }
> >>
> >> func Writer() {
> >> door.Lock()
> >> defer door.Unlock()
> >> ...
> >> }
> >>
> >> How does one achieve this in Go?
> >
> > Two locks and a bool?
> >
> > var door=sync.Mutex{}
> > var x=sync.Mutex{}
> > var b bool
> >
> > func trylock() bool {
> > x.Lock()
> > if b {
> > x.Unlock()
> > return false
> > }
> > b=true
> > door.Lock()
> > x.Unlock()
> > return true
> > }
> >
> > unlock:
> >
> > x.Lock()
> > b=false
> > door.Unlock()
> > x.Unlock()
> >
> >
> >
> >
> >>
> >> --
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> .
> >
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>
>
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