XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix, "Logging specific to SIMIX Virtual Machines");
-/* 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 **** */
-void SIMIX_vm_start(sg_host_t vm)
-{
- sg_host_t pm = static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getPm();
-
- simgrid::vm::VmHostExt::ensureVmExtInstalled();
- if (pm->extension<simgrid::vm::VmHostExt>() == nullptr)
- pm->extension_set(new simgrid::vm::VmHostExt());
-
- long pm_ramsize = pm->extension<simgrid::vm::VmHostExt>()->ramsize;
- int pm_overcommit = pm->extension<simgrid::vm::VmHostExt>()->overcommit;
- long vm_ramsize = host_get_ramsize(vm, nullptr);
-
- if (pm_ramsize && !pm_overcommit) { /* Only verify that we don't overcommit on need */
- /* Retrieve the memory occupied by the VMs on that host. Yep, we have to traverse all VMs of all hosts for that */
- long total_ramsize_of_vms = 0;
- for (simgrid::surf::VirtualMachineImpl* ws_vm : simgrid::surf::VirtualMachineImpl::allVms_)
- if (pm == ws_vm->getPm())
- total_ramsize_of_vms += ws_vm->getRamsize();
-
- 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);
- THROWF(vm_error, 0, "The VM %s cannot be started", vm->name().c_str());
- }
- }
-
- static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->setState(SURF_VM_STATE_RUNNING);
-}
-
/**
* @brief Function to suspend a SIMIX VM host. This function stops the execution of the
* VM. All the processes on this VM will pause. The state of the VM is
void SIMIX_vm_suspend(sg_host_t vm, smx_actor_t issuer)
{
if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
- THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str());
+ THROWF(vm_error, 0, "VM(%s) is not running", vm->cname());
- XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list));
+ XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list));
/* jump to vm_ws_suspend. The state will be set. */
static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->suspend();
void SIMIX_vm_resume(sg_host_t vm)
{
if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_SUSPENDED)
- THROWF(vm_error, 0, "VM(%s) was not suspended", vm->name().c_str());
+ THROWF(vm_error, 0, "VM(%s) was not suspended", vm->cname());
- XBT_DEBUG("resume VM(%s), where %d processes exist",
- vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list));
+ XBT_DEBUG("resume VM(%s), where %d processes exist", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list));
/* jump to vm_ws_resume() */
static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->resume();
}
}
-/**
- * @brief Function to save a SIMIX VM host.
- * This function is the same as vm_suspend, but the state of the VM is saved to the disk, and not preserved on memory.
- * We can later restore it again.
- *
- * @param vm the vm host to save (a sg_host_t)
- */
-void SIMIX_vm_save(sg_host_t vm, smx_actor_t issuer)
-{
- const char *name = sg_host_get_name(vm);
-
- if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
- THROWF(vm_error, 0, "VM(%s) is not running", name);
-
- XBT_DEBUG("save VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(vm)->process_list));
-
- /* jump to vm_ws_save() */
- static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->save();
-
- smx_actor_t smx_process, smx_process_safe;
- xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {
- XBT_DEBUG("suspend %s", smx_process->name.c_str());
- SIMIX_process_suspend(smx_process, issuer);
- }
-}
-
-void simcall_HANDLER_vm_save(smx_simcall_t simcall, sg_host_t vm)
-{
- SIMIX_vm_save(vm, simcall->issuer);
-}
-
/**
* @brief Function to shutdown a SIMIX VM host. This function powers off the
* VM. All the processes on this VM will be killed. But, the state of the VM is
void SIMIX_vm_shutdown(sg_host_t vm, smx_actor_t issuer)
{
if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
- THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str());
+ THROWF(vm_error, 0, "VM(%s) is not running", vm->cname());
- XBT_DEBUG("shutdown VM %s, that contains %d processes",
- vm->name().c_str(),xbt_swag_size(sg_host_simix(vm)->process_list));
+ XBT_DEBUG("shutdown VM %s, that contains %d processes", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list));
smx_actor_t smx_process, smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(vm)->process_list) {