Re: boost::signal and thread-safety

From: svanechel svanechel_at_[hidden])
Date: 2003-01-11 08:39:28

--- In Boost-Users_at_[hidden], Douglas Gregor <gregod_at_c...> 
wrote:
> On Friday 10 January 2003 08:39 am, "svanechel wrote:
> > Hi,
> >
> > The signal FAQ says that currently boost::signals aren't thread-
safe.
> > I'm guessing this applies to connecting/disconnecting slots from
> > different threads and calling a signal from multiple threadsl, 
right?
> 
> Right.
> 
> > If synchronize access when connecting slots and make sure that 
only a
> > single thread calls a certain signal, can I then use 
boost::signal to
> > fire events from objects that do processing in a worker thread?
> 
> Yes. So long as you do not connect or disconnect a slot while a 
signal is 
> calling slots, you'll be safe. It's also okay to invoke the same 
signal 
> concurrently, so long as no connections/disconnections are made 
and the 
> combiner can handle it.
> 
> > As a secondary question: how far in the future will this thread-
> > safety support be added?
> >
> > Thanks in advance,
> >
> > Sven
> 
> Not very soon. I'm currently deep in development of a 
documentation system for 
> Boost, and I don't have the time to sustain another (major!) 
effort.
> 
> 	Doug

No problem. From your response I've inferred that I can continue 
using this rather nice libary.

Thanks,

Sven