#include "simgrid/s4u/VirtualMachine.hpp"
#include "smx_private.h"
#include "src/plugins/vm/VirtualMachineImpl.hpp"
+#include "src/plugins/vm/VmHostExt.hpp"
#include "src/surf/HostImpl.hpp"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix, "Logging specific to SIMIX Virtual Machines");
}
/* **** start a VM **** */
-static int __can_be_started(sg_host_t vm)
+void SIMIX_vm_start(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;
- }
+ simgrid::vm::VmHostExt::ensureVmExtInstalled();
+ if (pm->extension<simgrid::vm::VmHostExt>() == nullptr)
+ pm->extension_set(new simgrid::vm::VmHostExt());
- if (pm_overcommit) {
- XBT_VERB("%s allows memory overcommit.", sg_host_get_name(pm));
- return 1;
- }
+ 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);
- 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 (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());
}
}
- 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);
+ static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->setState(SURF_VM_STATE_RUNNING);
}
/**
*/
void SIMIX_vm_suspend(sg_host_t vm, smx_actor_t issuer)
{
- if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING)
+ 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());
XBT_DEBUG("suspend VM(%s), where %d processes exist", vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list));
*/
void SIMIX_vm_resume(sg_host_t vm)
{
- if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_SUSPENDED)
+ 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());
XBT_DEBUG("resume VM(%s), where %d processes exist",
{
const char *name = sg_host_get_name(vm);
- if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING)
+ 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));
*/
void SIMIX_vm_shutdown(sg_host_t vm, smx_actor_t issuer)
{
- if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING)
+ 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());
XBT_DEBUG("shutdown VM %s, that contains %d processes",
}
/* FIXME: we may have to do something at the surf layer, e.g., vcpu action */
- static_cast<simgrid::surf::VirtualMachineImpl*>(vm->pimpl_)->setState(SURF_VM_STATE_CREATED);
+ static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->setState(SURF_VM_STATE_CREATED);
}
void simcall_HANDLER_vm_shutdown(smx_simcall_t simcall, sg_host_t vm)