vmState_ = SURF_VM_STATE_RUNNING;
}
-/**
- * @brief Function to save a VM.
- * This function is the same as vm_suspend, but the state of the VM is saved to the disk, and not preserved in memory.
- * We can later restore it again.
+/** @brief Power off a VM.
*
- * @param issuer the process requesting this operation
+ * All hosted processes will be killed, but the VM state is preserved on memory.
+ * It can later be restarted.
+ *
+ * @param issuer the actor requesting the shutdown
*/
-void VirtualMachineImpl::save(smx_actor_t issuer)
+void VirtualMachineImpl::shutdown(smx_actor_t issuer)
{
- if (isMigrating)
- THROWF(vm_error, 0, "Cannot save VM %s: it is migrating.", piface_->cname());
-
if (getState() != SURF_VM_STATE_RUNNING)
- THROWF(vm_error, 0, "Cannot save VM %s: it is not running.", piface_->cname());
+ THROWF(vm_error, 0, "Cannot shutdown VM %s: it is not running", piface_->cname());
xbt_swag_t process_list = piface_->extension<simgrid::simix::Host>()->process_list;
- XBT_DEBUG("Save VM %s, where %d processes exist", piface_->cname(), xbt_swag_size(process_list));
-
- vmState_ = SURF_VM_STATE_SAVING;
- action_->suspend();
- vmState_ = SURF_VM_STATE_SAVED;
+ XBT_DEBUG("shutdown VM %s, that contains %d processes", piface_->cname(), xbt_swag_size(process_list));
smx_actor_t smx_process, smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, process_list) {
- XBT_DEBUG("suspend %s", smx_process->cname());
- SIMIX_process_suspend(smx_process, issuer);
+ XBT_DEBUG("kill %s", smx_process->cname());
+ SIMIX_process_kill(smx_process, issuer);
}
-}
-
-void VirtualMachineImpl::restore()
-{
- if (getState() != SURF_VM_STATE_SAVED)
- THROWF(vm_error, 0, "Cannot restore VM %s: it was not saved", piface_->cname());
-
- xbt_swag_t process_list = piface_->extension<simgrid::simix::Host>()->process_list;
- XBT_DEBUG("Restore VM %s, where %d processes exist", piface_->cname(), xbt_swag_size(process_list));
- vmState_ = SURF_VM_STATE_RESTORING;
- action_->resume();
- vmState_ = SURF_VM_STATE_RUNNING;
+ setState(SURF_VM_STATE_CREATED);
- smx_actor_t smx_process, smx_process_safe;
- xbt_swag_foreach_safe(smx_process, smx_process_safe, process_list) {
- XBT_DEBUG("resume %s", smx_process->cname());
- SIMIX_process_resume(smx_process);
- }
+ /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */
}
/** @brief returns the physical machine on which the VM is running **/
return hostPM_;
}
-/* Update the physical host of the given VM */
-void VirtualMachineImpl::migrate(s4u::Host* host_dest)
+/** @brief Change the physical host on which the given VM is running
+ *
+ * This is an instantaneous migration.
+ */
+void VirtualMachineImpl::setPm(s4u::Host* destination)
{
const char* vm_name = piface_->cname();
const char* pm_name_src = hostPM_->cname();
- const char* pm_name_dst = host_dest->cname();
+ const char* pm_name_dst = destination->cname();
/* update net_elm with that of the destination physical host */
- piface_->pimpl_netcard = host_dest->pimpl_netcard;
+ piface_->pimpl_netcard = destination->pimpl_netcard;
- hostPM_ = host_dest;
+ hostPM_ = destination;
/* Update vcpu's action for the new pm */
/* create a cpu action bound to the pm model at the destination. */
- surf::CpuAction* new_cpu_action = static_cast<surf::CpuAction*>(host_dest->pimpl_cpu->execution_start(0));
+ surf::CpuAction* new_cpu_action = static_cast<surf::CpuAction*>(destination->pimpl_cpu->execution_start(0));
surf::Action::State state = action_->getState();
if (state != surf::Action::State::done)