Re: [libvirt] PATCH: 11/25: Public APIs for incrementing refcount

On Tue, Jan 13, 2009 at 05:43:08PM +0000, Daniel P. Berrange wrote: > With the domain events code, the callbacks triggered upon events get given > a virDomainPtr object instance. In many cases it'd be desirable to grab > this object and keep it in your app code. Unfortunately it is free'd the > moment the callback finishes executing. > > When allowing multiple threads to access a single virConnectPtr object > it is neccessary to ensure no thread releases it (virConnectCLose) while > another thread is still using it. > > The way to address both of these problems is to allow an application to > take an explicit reference on the object in question. So this patch > exposes methods to allow an app to increment the ref count on all our > public objects. To release the ref count, the existing virConectClose/ > virDOmainFree, etc methods suffice > > include/libvirt/libvirt.h | 6 + > include/libvirt/libvirt.h.in | 6 + > src/libvirt.c | 183 +++++++++++++++++++++++++++++++++++++++++++ > src/libvirt_public.syms | 12 ++ > 4 files changed, 206 insertions(+), 1 deletion(-) Poor man's garbage collection ... +1.