#include <xbt/ex.hpp>
#include "src/plugins/vm/VirtualMachineImpl.hpp"
+#include "src/plugins/vm/VmHostExt.hpp"
#include <simgrid/s4u/VirtualMachine.hpp>
#include <simgrid/s4u/host.hpp>
#include "xbt/log.h"
#include "simgrid/host.h"
+#include "src/simix/smx_host_private.h" /* don't ask me why the VM functions are in there (FIXME:KILLME) */
+
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_vm, msg, "Cloud-oriented parts of the MSG API");
/* **** Check state of a VM **** */
static inline int __MSG_vm_is_state(msg_vm_t vm, e_surf_vm_state_t state)
{
- return simcall_vm_get_state(vm) == state;
+ return static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() == state;
}
/** @brief Returns whether the given VM has just created, not running.
msg_vm_t MSG_vm_create(msg_host_t pm, const char *name, int ncpus, int ramsize, int net_cap, char *disk_path,
int disksize, int mig_netspeed, int dp_intensity)
{
- /* For the moment, intensity_rate is the percentage against the migration
- * bandwidth */
+ simgrid::vm::VmHostExt::ensureVmExtInstalled();
+
+ /* For the moment, intensity_rate is the percentage against the migration bandwidth */
double host_speed = MSG_host_get_speed(pm);
double update_speed = ((double)dp_intensity/100) * mig_netspeed;
*
* A VM is treated as a host. The name of the VM must be unique among all hosts.
*/
-msg_vm_t MSG_vm_create_core(msg_host_t ind_pm, const char *name)
+msg_vm_t MSG_vm_create_core(msg_host_t pm, const char* name)
{
- /* make sure the VM of the same name does not exit */
- {
- simgrid::s4u::Host* ind_host_tmp = sg_host_by_name(name);
- if (ind_host_tmp != nullptr && sg_host_simix(ind_host_tmp) != nullptr) {
- XBT_ERROR("host %s already exits", name);
- return nullptr;
- }
- }
-
- /* Note: ind_vm and vm_workstation point to the same elm object. */
- /* Ask the SIMIX layer to create the surf vm resource */
- sg_host_t ind_vm_workstation = simcall_vm_create(name, ind_pm);
-
- msg_vm_t ind_vm = (msg_vm_t) __MSG_host_create(ind_vm_workstation);
+ xbt_assert(sg_host_by_name(name) == nullptr,
+ "Cannot create a VM named %s: this name is already used by an host or a VM", name);
- XBT_DEBUG("A new VM (%s) has been created", name);
-
- TRACE_msg_vm_create(name, ind_pm);
-
- return ind_vm;
+ return new simgrid::s4u::VirtualMachine(name, pm);
}
/** @brief Destroy a VM. Destroy the VM object from the simulation.
void MSG_vm_destroy(msg_vm_t vm)
{
if (MSG_vm_is_migrating(vm))
- THROWF(vm_error, 0, "VM(%s) is migrating", sg_host_get_name(vm));
+ THROWF(vm_error, 0, "VM(%s) is migrating", vm->name().c_str());
/* First, terminate all processes on the VM if necessary */
if (MSG_vm_is_running(vm))
- simcall_vm_shutdown(vm);
+ MSG_vm_shutdown(vm);
- if (!MSG_vm_is_created(vm)) {
- XBT_CRITICAL("shutdown the given VM before destroying it");
- DIE_IMPOSSIBLE;
- }
+ xbt_assert(MSG_vm_is_created(vm), "shutdown the given VM before destroying it");
/* Then, destroy the VM object */
- simcall_vm_destroy(vm);
+ simgrid::simix::kernelImmediate([vm]() {
+ vm->destroy();
+ });
TRACE_msg_vm_end(vm);
}
{
/* msg_vm_t equals to msg_host_t */
simcall_vm_shutdown(vm);
-
+ MSG_process_sleep(0.); // Make sure that the processes in the VM are killed in this scheduling round before processing
+ // (eg with the VM destroy)
// TRACE_msg_vm_(vm);
}
msg_host_t src_pm = ms->src_pm;
msg_host_t dst_pm = ms->dst_pm;
- // TODO: we have an issue, if the DST node is turning off during the three next calls, then the VM is in an
- // inconsistent
- // state. I should check with Takahiro in order to make this portion of code atomic
- //
- // /* Update the vm location */
- // simcall_vm_migrate(vm, dst_pm);
- //
- // /* Resume the VM */
- // simcall_vm_resume(vm);
- //
- simcall_vm_migratefrom_resumeto(vm, src_pm, dst_pm);
+ // Make sure that we cannot get interrupted between the migrate and the resume to not end in an inconsistent state
+ simgrid::simix::kernelImmediate([vm, src_pm, dst_pm]() {
+ /* Update the vm location */
+ /* precopy migration makes the VM temporally paused */
+ xbt_assert(static_cast<simgrid::s4u::VirtualMachine*>(vm)->pimpl_vm_->getState() == 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);
+
+ /* Resume the VM */
+ SIMIX_vm_resume(vm);
+ });
{
// Now the VM is running on the new host (the migration is completed) (even if the SRC crash)
