-/* works for VMs and PMs */
-static long host_get_ramsize(sg_host_t vm, int *overcommit)
-{
- s_vm_params_t params;
- static_cast<simgrid::s4u::VirtualMachine*>(vm)->parameters(¶ms);
-
- if (overcommit)
- *overcommit = params.overcommit;
-
- return params.ramsize;
-}
-
-/* **** start a VM **** */
-static int __can_be_started(sg_host_t vm)
-{
- sg_host_t pm = static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getPm();
-
- int pm_overcommit = 0;
- long pm_ramsize = host_get_ramsize(pm, &pm_overcommit);
- long vm_ramsize = host_get_ramsize(vm, nullptr);
-
- if (!pm_ramsize) {
- /* We assume users do not want to care about ramsize. */
- return 1;
- }
-
- if (pm_overcommit) {
- XBT_VERB("%s allows memory overcommit.", sg_host_get_name(pm));
- return 1;
- }
-
- long total_ramsize_of_vms = 0;
- xbt_dynar_t dyn_vms = pm->pimpl_->getVms();
- {
- unsigned int cursor = 0;
- sg_host_t another_vm;
- xbt_dynar_foreach(dyn_vms, cursor, another_vm) {
- long another_vm_ramsize = host_get_ramsize(vm, nullptr);
- total_ramsize_of_vms += another_vm_ramsize;
- }
- }
-
- if (vm_ramsize > pm_ramsize - total_ramsize_of_vms) {
- XBT_WARN("cannnot start %s@%s due to memory shortage: vm_ramsize %ld, free %ld, pm_ramsize %ld (bytes).",
- sg_host_get_name(vm), sg_host_get_name(pm),
- vm_ramsize, pm_ramsize - total_ramsize_of_vms, pm_ramsize);
- xbt_dynar_free(&dyn_vms);
- return 0;
- }
-
- return 1;
-}
-
-void SIMIX_vm_start(sg_host_t vm)
-{
- if (__can_be_started(vm))
- static_cast<simgrid::surf::VirtualMachineImpl*>(vm->pimpl_)->setState(SURF_VM_STATE_RUNNING);
- else
- THROWF(vm_error, 0, "The VM %s cannot be started", vm->name().c_str());
-}
-
-
-e_surf_vm_state_t SIMIX_vm_get_state(sg_host_t vm)
-{
- return static_cast<simgrid::surf::VirtualMachineImpl*>(vm->pimpl_)->getState();
-}
-
-/**
- * @brief Function to migrate a SIMIX VM host.
- *
- * @param host the vm host to migrate (a sg_host_t)
- */
-void SIMIX_vm_migrate(sg_host_t vm, sg_host_t dst_pm)
-{
- /* precopy migration makes the VM temporally paused */
- xbt_assert(SIMIX_vm_get_state(vm) == SURF_VM_STATE_SUSPENDED);
-
- /* jump to vm_ws_xigrate(). this will update the vm location. */
- static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->migrate(dst_pm);
-}
-