+ THROWF(vm_error, 0, "The VM %s cannot be started", SIMIX_host_get_name(ind_vm));
+}
+
+
+int SIMIX_vm_get_state(sg_host_t ind_vm)
+{
+ return surf_host_get_state(surf_host_resource_priv(ind_vm));
+}
+
+/**
+ * \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 ind_vm, sg_host_t ind_dst_pm)
+{
+ /* precopy migration makes the VM temporally paused */
+ xbt_assert(SIMIX_vm_get_state(ind_vm) == SURF_VM_STATE_SUSPENDED);
+
+ /* jump to vm_ws_xigrate(). this will update the vm location. */
+ surf_vm_migrate(ind_vm, ind_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_set_affinity(vm, src_pm, 0);
+ * 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)
+{
+ /* deinstall the current affinity setting for the CPU */
+ SIMIX_vm_set_affinity(vm, src_pm, 0);
+
+ /* Update the vm location */
+ SIMIX_vm_migrate(vm, dst_pm);
+
+ /* Resume the VM */
+ smx_process_t self = SIMIX_process_self();
+ SIMIX_vm_resume(vm, self->simcall.issuer);
+}
+
+/**
+ * \brief Function to get the physical host of the given SIMIX VM host.
+ *
+ * \param host the vm host to get_phys_host (a sg_host_t)
+ */
+void *SIMIX_vm_get_pm(sg_host_t ind_vm)
+{
+ /* jump to vm_ws_get_pm(). this will return the vm name. */
+ return surf_vm_get_pm(ind_vm);
+}
+
+/**
+ * \brief Function to set the CPU bound of the given SIMIX VM host.
+ *
+ * \param host the vm host (a sg_host_t)
+ * \param bound bound (a double)
+ */
+void SIMIX_vm_set_bound(sg_host_t ind_vm, double bound)
+{
+ /* jump to vm_ws_set_vm_bound(). */
+ surf_vm_set_bound(ind_vm, bound);
+}
+
+/**
+ * \brief Function to set the CPU affinity of the given SIMIX VM host.
+ *
+ * \param host the vm host (a sg_host_t)
+ * \param host the pm host (a sg_host_t)
+ * \param mask affinity mask (a unsigned long)
+ */
+void SIMIX_vm_set_affinity(sg_host_t ind_vm, sg_host_t ind_pm, unsigned long mask)
+{
+ /* make sure this at the MSG layer. */
+ xbt_assert(SIMIX_vm_get_pm(ind_vm) == ind_pm);
+
+ /* jump to vm_ws_set_vm_affinity(). */
+ surf_vm_set_affinity(ind_vm, ind_pm, mask);
+}
+
+
+/**
+ * \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
+ * preserved on memory. We can later resume it again.
+ *
+ * \param host the vm host to suspend (a sg_host_t)
+ */
+void SIMIX_vm_suspend(sg_host_t ind_vm, smx_process_t issuer)
+{
+ const char *name = SIMIX_host_get_name(ind_vm);
+
+ if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_RUNNING)
+ THROWF(vm_error, 0, "VM(%s) is not running", name);
+
+ XBT_DEBUG("suspend VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(ind_vm)->process_list));
+
+ /* jump to vm_ws_suspend. The state will be set. */
+ surf_vm_suspend(ind_vm);
+
+ smx_process_t smx_process, smx_process_safe;
+ xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(ind_vm)->process_list) {
+ XBT_DEBUG("suspend %s", smx_process->name);
+ SIMIX_process_suspend(smx_process, issuer);
+ }
+
+ XBT_DEBUG("suspend all processes on the VM done done");
+}
+
+void simcall_HANDLER_vm_suspend(smx_simcall_t simcall, sg_host_t ind_vm)
+{
+ if (simcall->issuer->host == ind_vm) {
+ XBT_ERROR("cannot suspend the VM where I run");
+ DIE_IMPOSSIBLE;
+ }
+
+ SIMIX_vm_suspend(ind_vm, simcall->issuer);
+
+ XBT_DEBUG("simcall_HANDLER_vm_suspend done");
+}
+
+
+/**
+ * \brief Function to resume a SIMIX VM host. This function restart the execution of the
+ * VM. All the processes on this VM will run again.
+ *
+ * \param host the vm host to resume (a sg_host_t)
+ */
+void SIMIX_vm_resume(sg_host_t ind_vm, smx_process_t issuer)
+{
+ const char *name = SIMIX_host_get_name(ind_vm);
+
+ if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_SUSPENDED)
+ THROWF(vm_error, 0, "VM(%s) was not suspended", name);
+
+ XBT_DEBUG("resume VM(%s), where %d processes exist", name, xbt_swag_size(sg_host_simix(ind_vm)->process_list));
+
+ /* jump to vm_ws_resume() */
+ surf_vm_resume(ind_vm);
+
+ smx_process_t smx_process, smx_process_safe;
+ xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(ind_vm)->process_list) {
+ XBT_DEBUG("resume %s", smx_process->name);
+ SIMIX_process_resume(smx_process, issuer);
+ }
+}
+
+void simcall_HANDLER_vm_resume(smx_simcall_t simcall, sg_host_t ind_vm)
+{
+ SIMIX_vm_resume(ind_vm, simcall->issuer);
+}
+
+
+/**
+ * \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 host the vm host to save (a sg_host_t)
+ */
+void SIMIX_vm_save(sg_host_t ind_vm, smx_process_t issuer)
+{
+ const char *name = SIMIX_host_get_name(ind_vm);
+
+ if (SIMIX_vm_get_state(ind_vm) != 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(ind_vm)->process_list));
+
+ /* jump to vm_ws_save() */
+ surf_vm_save(ind_vm);
+
+ smx_process_t smx_process, smx_process_safe;
+ xbt_swag_foreach_safe(smx_process, smx_process_safe, sg_host_simix(ind_vm)->process_list) {
+ XBT_DEBUG("suspend %s", smx_process->name);
+ SIMIX_process_suspend(smx_process, issuer);
+ }