+namespace simgrid::s4u {
+xbt::signal<void(VirtualMachine&)> VirtualMachine::on_vm_creation;
+xbt::signal<void(VirtualMachine const&)> VirtualMachine::on_start;
+xbt::signal<void(VirtualMachine const&)> VirtualMachine::on_started;
+xbt::signal<void(VirtualMachine const&)> VirtualMachine::on_shutdown;
+xbt::signal<void(VirtualMachine const&)> VirtualMachine::on_suspend;
+xbt::signal<void(VirtualMachine const&)> VirtualMachine::on_resume;
+xbt::signal<void(VirtualMachine const&)> VirtualMachine::on_migration_start;
+xbt::signal<void(VirtualMachine const&)> VirtualMachine::on_migration_end;
+xbt::signal<void(VirtualMachine const&)> VirtualMachine::on_vm_destruction;
+
+xbt::Extension<Host, VmHostExt> VmHostExt::EXTENSION_ID;
+
+void VmHostExt::ensureVmExtInstalled()
+{
+ if (not EXTENSION_ID.valid())
+ EXTENSION_ID = Host::extension_create<VmHostExt>();
+}
+
+VirtualMachine::VirtualMachine(const std::string& name, s4u::Host* physical_host, int core_amount,
+ size_t ramsize) // XBT_ATTRIB_DEPRECATED_v336
+ : Host(new kernel::resource::VirtualMachineImpl(name, this, physical_host, core_amount, ramsize))
+ , pimpl_vm_(dynamic_cast<kernel::resource::VirtualMachineImpl*>(Host::get_impl()))
+{
+ physical_host->get_impl()->create_vm(name, this);
+}
+
+VirtualMachine::VirtualMachine(kernel::resource::VirtualMachineImpl* impl)
+ : Host(impl), pimpl_vm_(dynamic_cast<kernel::resource::VirtualMachineImpl*>(Host::get_impl()))
+{
+}
+
+void VirtualMachine::start()
+{
+ kernel::actor::simcall_answered([this]() { pimpl_vm_->start(); });
+}
+
+void VirtualMachine::suspend()
+{
+ const kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
+ kernel::actor::simcall_answered([this, issuer]() { pimpl_vm_->suspend(issuer); });
+}
+
+void VirtualMachine::resume()
+{
+ pimpl_vm_->resume();
+}
+
+void VirtualMachine::shutdown()
+{
+ kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
+ kernel::actor::simcall_answered([this, issuer]() { pimpl_vm_->shutdown(issuer); });
+}
+
+void VirtualMachine::destroy()
+{
+ auto destroy_code = [this]() {
+ /* First, terminate all processes on the VM if necessary */
+ shutdown();
+
+ XBT_DEBUG("destroy %s", get_cname());
+ on_vm_destruction(*this);
+ on_this_vm_destruction(*this);
+ /* Then, destroy the VM object */
+ kernel::actor::simcall_answered(
+ [this]() { get_vm_impl()->get_physical_host()->get_impl()->destroy_vm(get_name()); });
+ };
+
+ if (not this_actor::is_maestro() && this_actor::get_host() == this) {
+ XBT_VERB("Launch another actor on physical host %s to destroy my own VM: %s", get_pm()->get_cname(), get_cname());
+ simgrid::s4u::Actor::create(get_name() + "-vm_destroy", get_pm(), destroy_code);
+ simgrid::s4u::this_actor::yield();
+ XBT_CRITICAL("I should be dead now!");
+ DIE_IMPOSSIBLE;
+ }
+
+ destroy_code();
+}
+
+simgrid::s4u::Host* VirtualMachine::get_pm() const
+{
+ return pimpl_vm_->get_physical_host();
+}
+
+VirtualMachine* VirtualMachine::set_pm(simgrid::s4u::Host* pm)
+{
+ kernel::actor::simcall_answered([this, pm]() { pimpl_vm_->set_physical_host(pm); });
+ return this;
+}
+
+VirtualMachine::State VirtualMachine::get_state() const