XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_io, s4u_activity, "S4U asynchronous I/Os");
namespace simgrid::s4u {
-xbt::signal<void(Io const&)> Io::on_start;
Io::Io(kernel::activity::IoImplPtr pimpl)
{
state_ = State::STARTED;
on_start(*this);
+ on_this_start(*this);
return this;
}