func (c *VirConnection) UnregisterCloseCallback() error {
connData := getConnectionData(c)
if connData.closeCallbackId == nil {
return nil
}
callbackPtr := unsafe.Pointer(C.closeCallback_cgo)
res := C.virConnectUnregisterCloseCallback(c.ptr, C.virConnectCloseFunc(callbackPtr))
if res != 0 {
return GetLastError()
}
connData.closeCallbackId = nil
return nil
}
// Register a close callback for the given destination. Only one
// callback per connection is allowed. Setting a callback will remove
// the previous one.
func (c *VirConnection) RegisterCloseCallback(cb CloseCallback, opaque func()) error {
c.UnregisterCloseCallback()
context := &closeContext{
cb: cb,
f: opaque,
}
goCallbackId := registerCallbackId(context)
callbackPtr := unsafe.Pointer(C.closeCallback_cgo)
res := C.virConnectRegisterCloseCallback_cgo(c.ptr, C.virConnectCloseFunc(callbackPtr), C.long(goCallbackId))
if res != 0 {
freeCallbackId(goCallbackId)
return GetLastError()
}
connData := getConnectionData(c)
connData.closeCallbackId = &goCallbackId
return nil
}