Re: [libvirt] Using callback under Windows compiling of libvirt library

2010/3/18 Dev.Atom <arnaud.champion(a)devatom.fr&gt;: > Hi, > > I have compiled LibVirt 0.7.4 under mingw, and I want to use it with > domain > callback. Here is a a code sample of my situation (I'm using visual > studio) Did you compile it on Windows, or cross-compile it from Linux? > > static > > int domain_event(virConnectPtr conn, > > virDomainPtr dom, > > int evt, > > int detail, > > void *opaque) > > { > > bool test = true; > > return 0; > > } > > int > > _tmain(int argc, _TCHAR* argv[]) > > { > > virConnectPtr conn = virConnectOpen( > > "qemu+tcp://192.168.220.198/session"); > > // Set Callback > > int cbresult = virConnectDomainEventRegister(conn, domain_event, NULL, > NULL); > > // Lookup Domain > > virDomainPtr dom = virDomainLookupByName(conn, > > "Test1"); > > if (virDomainIsActive(dom) == 1) > > { > > // Start Domain > > int startDom = virDomainCreate(dom); > > if (startDom != 0) > > { > > virErrorPtr e = virGetLastError(); > > bool test = true; > > } > > } > > else > > { > > // Stop Domain > > int StopDom = virDomainDestroy(dom); > > if (StopDom != 0) > > { > > virErrorPtr e = virGetLastError(); > > bool test = true; > > } > > } > > return 0; > > } This code is incomplete, you're missing the event-handling, see the virEventRegisterImpl function. Have you tried the domain-event example yet? See examples/domain-events/events-c/event-test.c in the libvirt codebase. > > This code works well when I did'nt use callbacks, but when I use it, it > throw an error at the virDomainCreate or virDomainDestroy call. In the > application windows (console) I have an "unmarshaling msg", I have study > the > case it comme from the call of "xdr_string" method in the > "xdr_remote_nonull_string" method (remote_protocol.c). > > I think, the xdr_string method is unable to marshall strings from the > XDR* > object to a char**. > Where did you get your XDR lib from? I'm using libportablexdr [1] version 4.9.1 on Windows, but had to patch it to get it compile correctly with MinGW. This may be a bug in your XDR lib, or may be a problem in the way libvirt uses XDR, or it's just a symptom of that fact that you try to use domain events without registering event-handling first. [1] http://people.redhat.com/~rjones/portablexdr/ Matthias