func (iface *Interface) createCompletionQueue(cqe int) *C.struct_ibv_cq {
compChannel := C.ibv_create_comp_channel(iface.ctx)
if compChannel == nil {
panic("ibv_create_comp_channel: failure")
}
if err := syscall.SetNonblock(int(compChannel.fd), true); err != nil {
panic(err)
}
cq := C.ibv_create_cq(iface.ctx, C.int(cqe), nil, compChannel, 0)
if cq != nil {
return cq
}
errno := C.ibv_destroy_comp_channel(compChannel)
if errno != 0 {
panic(newError("ibv_destroy_comp_channel", errno))
}
return nil
}
func destroyCompletionQueue(cq *C.struct_ibv_cq) error {
if cq == nil {
return nil
}
channel := cq.channel
// CQ must be destroyed before completion channel
errno := C.ibv_destroy_cq(cq)
if errno != 0 {
return newError("ibv_destroy_cq", errno)
}
if channel != nil {
errno := C.ibv_destroy_comp_channel(channel)
if errno != 0 {
return newError("ibv_destroy_comp_channel", errno)
}
}
return nil
}