#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");
-/* 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);
-}
-
-/**
- * @brief Encompassing simcall to prevent the removal of the src or the dst node at the end of a VM migration
- * The simcall actually invokes the following calls:
- * simcall_vm_migrate(vm, dst_pm);
- * simcall_vm_resume(vm);
- *
- * It is called at the end of the migration_rx_fun function from msg/msg_vm.c
- *
- * @param vm VM to migrate
- * @param src_pm Source physical host
- * @param dst_pmt Destination physical host
- */
-void SIMIX_vm_migratefrom_resumeto(sg_host_t vm, sg_host_t src_pm, sg_host_t dst_pm)
-{
- /* Update the vm location */
- SIMIX_vm_migrate(vm, dst_pm);
-
- /* Resume the VM */
- SIMIX_vm_resume(vm);
-}
-
/**
* @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 (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING)
- THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str());
+ if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
+ 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 (SIMIX_vm_get_state(vm) != SURF_VM_STATE_SUSPENDED)
- THROWF(vm_error, 0, "VM(%s) was not suspended", vm->name().c_str());
+ if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_SUSPENDED)
+ 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();
*/
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", vm->cname());
- if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING)
- THROWF(vm_error, 0, "VM(%s) is not running", name);
+ XBT_DEBUG("save VM(%s), where %d processes exist", vm->cname(), xbt_swag_size(sg_host_simix(vm)->process_list));
- 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());
+ XBT_DEBUG("suspend %s", smx_process->cname());
SIMIX_process_suspend(smx_process, issuer);
}
}
SIMIX_vm_save(vm, simcall->issuer);
}
-/**
- * @brief Function to restore a SIMIX VM host. This function restart the execution of the
- * VM. All the processes on this VM will run again.
- *
- * @param vm the vm host to restore (a sg_host_t)
- */
-void SIMIX_vm_restore(sg_host_t vm)
-{
- if (SIMIX_vm_get_state(vm) != SURF_VM_STATE_SAVED)
- THROWF(vm_error, 0, "VM(%s) was not saved", vm->name().c_str());
-
- XBT_DEBUG("restore VM(%s), where %d processes exist",
- vm->name().c_str(), xbt_swag_size(sg_host_simix(vm)->process_list));
-
- /* jump to vm_ws_restore() */
- static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->restore();
-
- 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("resume %s", smx_process->name.c_str());
- SIMIX_process_resume(smx_process);
- }
-}
-
/**
* @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 (SIMIX_vm_get_state(vm) != SURF_VM_STATE_RUNNING)
- THROWF(vm_error, 0, "VM(%s) is not running", vm->name().c_str());
+ if (static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() != SURF_VM_STATE_RUNNING)
+ 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) {
}
/* 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)
{
SIMIX_vm_shutdown(vm, simcall->issuer);
}
-
-/**
- * @brief Function to destroy a SIMIX VM host.
- *
- * @param vm the vm host to destroy (a sg_host_t)
- */
-void SIMIX_vm_destroy(sg_host_t vm)
-{
- /* this code basically performs a similar thing like SIMIX_host_destroy() */
- XBT_DEBUG("destroy %s", vm->name().c_str());
-
- /* FIXME: this is really strange that everything fails if the next line is removed.
- * This is as if we shared these data with the PM, which definitely should not be the case...
- *
- * We need to test that suspending a VM does not suspends the processes running on its PM, for example.
- * Or we need to simplify this code enough to make it actually readable (but this sounds harder than testing)
- */
- vm->extension_set<simgrid::simix::Host>(nullptr);
-
- /* Don't free these things twice: they are the ones of my physical host */
- vm->pimpl_cpu = nullptr;
- vm->pimpl_netcard = nullptr;
-
- vm->destroy();
-}
