*/
smx_host_t SIMIX_vm_create(const char *name, smx_host_t ind_phys_host)
{
-
- smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
- s_smx_process_t proc;
-
- // TODO check why we do not have any VM here and why we have the host_proc_hookup ?
-
- /* Host structure */
- smx_host->data = NULL;
- smx_host->process_list =
- xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
-
- /* Update global variables */
- xbt_lib_set(host_lib,name,SIMIX_HOST_LEVEL,smx_host);
-
/* Create surf associated resource */
- // TODO change phys_host into the right workstation surf model
surf_vm_workstation_model->extension.vm_workstation.create(name, ind_phys_host);
- return xbt_lib_get_elm_or_null(host_lib, name);
+ smx_host_t smx_host = SIMIX_host_create(name, ind_phys_host, NULL);
+
+ /* We will be able to register the VM to its physical host, so that we can promptly
+ * retrieve the list VMs on the physical host. */
+
+ return smx_host;
}
-smx_host_t SIMIX_pre_vm_create(smx_simcall_t simcall, const char *name, smx_host_t ind_phys_host){
+smx_host_t SIMIX_pre_vm_create(smx_simcall_t simcall, const char *name, smx_host_t ind_phys_host)
+{
return SIMIX_vm_create(name, ind_phys_host);
}
-static int get_host_property_as_integer(smx_host_t host, const char *name)
+/* works for VMs and PMs */
+static long host_get_ramsize(smx_host_t vm, int *overcommit)
{
- xbt_dict_t dict = SIMIX_host_get_properties(host);
-
- char *value = xbt_dict_get_or_null(dict, name);
- return atoi(value);
-}
+ s_ws_params_t params;
+ surf_workstation_model->extension.workstation.get_params(vm, ¶ms);
+ if (overcommit)
+ *overcommit = params.overcommit;
+ return params.ramsize;
+}
/* **** start a VM **** */
static int __can_be_started(smx_host_t vm)
{
- // TODO add checking code related to overcommitment or not.
+ smx_host_t pm = surf_vm_workstation_model->extension.vm_workstation.get_pm(vm);
- int overcommit = get_host_property_as_integer(vm, "OverCommit");
- int core_nb = get_host_property_as_integer(vm, "CORE_NB");
- int mem_cap = get_host_property_as_integer(vm, "MEM_CAP");
- int net_cap = get_host_property_as_integer(vm, "NET_CAP");
+ int pm_overcommit = 0;
+ long pm_ramsize = host_get_ramsize(pm, &pm_overcommit);
+ long vm_ramsize = host_get_ramsize(vm, NULL);
- /* we need to get other VM objects on this physical host. */
+ if (!pm_ramsize) {
+ /* We assume users do not want to care about ramsize. */
+ return 1;
+ }
+ if (pm_overcommit) {
+ XBT_INFO("%s allows memory overcommit.", pm->key);
+ return 1;
+ }
+ long total_ramsize_of_vms = 0;
+ xbt_dynar_t dyn_vms = surf_workstation_model->extension.workstation.get_vms(pm);
+ {
+ unsigned int cursor = 0;
+ smx_host_t another_vm;
+ xbt_dynar_foreach(dyn_vms, cursor, another_vm) {
+ long another_vm_ramsize = host_get_ramsize(vm, NULL);
+ 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).",
+ vm->key, pm->key, vm_ramsize, pm_ramsize - total_ramsize_of_vms, pm_ramsize);
+ xbt_dynar_free(&dyn_vms);
+ return 0;
+ }
+ xbt_dynar_free(&dyn_vms);
return 1;
}
void SIMIX_vm_start(smx_host_t ind_vm)
{
- //TODO only start the VM if you can
if (__can_be_started(ind_vm))
SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_RUNNING);
else
THROWF(vm_error, 0, "The VM %s cannot be started", SIMIX_host_get_name(ind_vm));
}
+
+
void SIMIX_pre_vm_start(smx_simcall_t simcall, smx_host_t ind_vm)
{
SIMIX_vm_start(ind_vm);
+ SIMIX_simcall_answer(simcall);
}
/* ***** set/get state of a VM ***** */
void SIMIX_vm_set_state(smx_host_t ind_vm, int state)
{
+ /* jump to vm_ws_set_state */
surf_vm_workstation_model->extension.vm_workstation.set_state(ind_vm, state);
}
*/
void SIMIX_vm_migrate(smx_host_t ind_vm, smx_host_t ind_dst_pm)
{
- /* TODO: check state */
-
- /* TODO: Using the variable of the MSG layer is not clean. */
- SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_MIGRATING);
+ /* precopy migration makes the VM temporally paused */
+ e_surf_vm_state_t state = SIMIX_vm_get_state(ind_vm);
+ xbt_assert(state == SURF_VM_STATE_SUSPENDED);
/* jump to vm_ws_migrate(). this will update the vm location. */
surf_vm_workstation_model->extension.vm_workstation.migrate(ind_vm, ind_dst_pm);
-
- SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_RUNNING);
}
-void SIMIX_pre_vm_migrate(smx_simcall_t simcall, smx_host_t ind_vm, smx_host_t ind_dst_pm){
- SIMIX_vm_migrate(ind_vm, ind_dst_pm);
+void SIMIX_pre_vm_migrate(smx_simcall_t simcall, smx_host_t ind_vm, smx_host_t ind_dst_pm)
+{
+ SIMIX_vm_migrate(ind_vm, ind_dst_pm);
+ SIMIX_simcall_answer(simcall);
}
*
* \param host the vm host to get_phys_host (a smx_host_t)
*/
-const char *SIMIX_vm_get_phys_host(smx_host_t ind_vm)
+void *SIMIX_vm_get_pm(smx_host_t ind_vm)
{
- /* jump to vm_ws_get_phys_host(). this will return the vm name. */
- return surf_vm_workstation_model->extension.vm_workstation.get_phys_host(ind_vm);
+ /* jump to vm_ws_get_pm(). this will return the vm name. */
+ return surf_vm_workstation_model->extension.vm_workstation.get_pm(ind_vm);
}
-const char *SIMIX_pre_vm_get_phys_host(smx_simcall_t simcall, smx_host_t ind_vm){
- return SIMIX_vm_get_phys_host(ind_vm);
+void *SIMIX_pre_vm_get_pm(smx_simcall_t simcall, smx_host_t ind_vm)
+{
+ return SIMIX_vm_get_pm(ind_vm);
}
*
* \param host the vm host to suspend (a smx_host_t)
*/
-void SIMIX_vm_suspend(smx_host_t ind_vm)
+void SIMIX_vm_suspend(smx_host_t ind_vm, smx_process_t issuer)
{
- /* TODO: check state */
+ const char *name = SIMIX_host_get_name(ind_vm);
- XBT_DEBUG("%d processes in the VM", xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
+ 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(SIMIX_host_priv(ind_vm)->process_list));
+
+ /* jump to vm_ws_suspend. The state will be set. */
+ surf_vm_workstation_model->extension.vm_workstation.suspend(ind_vm);
smx_process_t smx_process, smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) {
- XBT_DEBUG("suspend %s", SIMIX_host_get_name(ind_vm));
- /* FIXME: calling a simcall from the SIMIX layer is strange. */
- simcall_process_suspend(smx_process);
+ XBT_DEBUG("suspend %s", smx_process->name);
+ SIMIX_process_suspend(smx_process, issuer);
}
- /* TODO: Using the variable of the MSG layer is not clean. */
- SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_SUSPENDED);
+ XBT_DEBUG("suspend all processes on the VM done done");
}
-void SIMIX_pre_vm_suspend(smx_simcall_t simcall, smx_host_t ind_vm){
- SIMIX_vm_suspend(ind_vm);
+void SIMIX_pre_vm_suspend(smx_simcall_t simcall, smx_host_t ind_vm)
+{
+ if (simcall->issuer->smx_host == ind_vm) {
+ XBT_ERROR("cannot suspend the VM where I run");
+ DIE_IMPOSSIBLE;
+ }
+
+ SIMIX_vm_suspend(ind_vm, simcall->issuer);
+
+ /* without this, simcall_vm_suspend() does not return to the userland. why? */
+ SIMIX_simcall_answer(simcall);
+
+ XBT_DEBUG("SIMIX_pre_vm_suspend done");
}
*
* \param host the vm host to resume (a smx_host_t)
*/
-void SIMIX_vm_resume(smx_host_t ind_vm)
+void SIMIX_vm_resume(smx_host_t ind_vm, smx_process_t issuer)
{
- /* TODO: check state */
+ const char *name = SIMIX_host_get_name(ind_vm);
- XBT_DEBUG("%d processes in the VM", xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
+ 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(SIMIX_host_priv(ind_vm)->process_list));
+
+ /* jump to vm_ws_resume() */
+ surf_vm_workstation_model->extension.vm_workstation.resume(ind_vm);
smx_process_t smx_process, smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) {
- XBT_DEBUG("resume %s", SIMIX_host_get_name(ind_vm));
- /* FIXME: calling a simcall from the SIMIX layer is strange. */
- simcall_process_resume(smx_process);
+ XBT_DEBUG("resume %s", smx_process->name);
+ SIMIX_process_resume(smx_process, issuer);
}
-
- /* TODO: Using the variable of the MSG layer is not clean. */
- SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_RUNNING);
}
-void SIMIX_pre_vm_resume(smx_simcall_t simcall, smx_host_t ind_vm){
- SIMIX_vm_resume(ind_vm);
+void SIMIX_pre_vm_resume(smx_simcall_t simcall, smx_host_t ind_vm)
+{
+ SIMIX_vm_resume(ind_vm, simcall->issuer);
+ SIMIX_simcall_answer(simcall);
}
*
* \param host the vm host to save (a smx_host_t)
*/
-void SIMIX_vm_save(smx_host_t ind_vm)
+void SIMIX_vm_save(smx_host_t ind_vm, smx_process_t issuer)
{
- /* TODO: check state */
+ const char *name = SIMIX_host_get_name(ind_vm);
- XBT_DEBUG("%d processes in the VM", xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
+ 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(SIMIX_host_priv(ind_vm)->process_list));
- /* TODO: do something at the surf level */
+ /* jump to vm_ws_save() */
+ surf_vm_workstation_model->extension.vm_workstation.save(ind_vm);
smx_process_t smx_process, smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) {
- XBT_DEBUG("save %s", SIMIX_host_get_name(ind_vm));
- /* FIXME: calling a simcall from the SIMIX layer is strange. */
- simcall_process_suspend(smx_process);
+ XBT_DEBUG("suspend %s", smx_process->name);
+ SIMIX_process_suspend(smx_process, issuer);
}
-
- /* TODO: Using the variable of the MSG layer is not clean. */
- SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_SAVED);
}
-void SIMIX_pre_vm_save(smx_simcall_t simcall, smx_host_t ind_vm){
- SIMIX_vm_save(ind_vm);
+void SIMIX_pre_vm_save(smx_simcall_t simcall, smx_host_t ind_vm)
+{
+ SIMIX_vm_save(ind_vm, simcall->issuer);
+
+ /* without this, simcall_vm_suspend() does not return to the userland. why? */
+ SIMIX_simcall_answer(simcall);
}
*
* \param host the vm host to restore (a smx_host_t)
*/
-void SIMIX_vm_restore(smx_host_t ind_vm)
+void SIMIX_vm_restore(smx_host_t ind_vm, smx_process_t issuer)
{
- /* TODO: check state */
+ const char *name = SIMIX_host_get_name(ind_vm);
- XBT_DEBUG("%d processes in the VM", xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
+ if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_SAVED)
+ THROWF(vm_error, 0, "VM(%s) was not saved", name);
+
+ XBT_DEBUG("restore VM(%s), where %d processes exist", name, xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
- /* TODO: do something at the surf level */
+ /* jump to vm_ws_restore() */
+ surf_vm_workstation_model->extension.vm_workstation.resume(ind_vm);
smx_process_t smx_process, smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) {
- XBT_DEBUG("restore %s", SIMIX_host_get_name(ind_vm));
- /* FIXME: calling a simcall from the SIMIX layer is strange. */
- simcall_process_resume(smx_process);
+ XBT_DEBUG("resume %s", smx_process->name);
+ SIMIX_process_resume(smx_process, issuer);
}
-
- /* TODO: Using the variable of the MSG layer is not clean. */
- SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_RUNNING);
}
-void SIMIX_pre_vm_restore(smx_simcall_t simcall, smx_host_t ind_vm){
- SIMIX_vm_restore(ind_vm);
+void SIMIX_pre_vm_restore(smx_simcall_t simcall, smx_host_t ind_vm)
+{
+ SIMIX_vm_restore(ind_vm, simcall->issuer);
+ SIMIX_simcall_answer(simcall);
}
*/
void SIMIX_vm_shutdown(smx_host_t ind_vm, smx_process_t issuer)
{
- /* TODO: check state */
+ 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("%d processes in the VM", xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
smx_process_t smx_process, smx_process_safe;
xbt_swag_foreach_safe(smx_process, smx_process_safe, SIMIX_host_priv(ind_vm)->process_list) {
- XBT_DEBUG("kill %s", SIMIX_host_get_name(ind_vm));
-
- SIMIX_process_kill(smx_process, issuer);
+ XBT_DEBUG("shutdown %s", name);
+ SIMIX_process_kill(smx_process, issuer);
}
- /* TODO: Using the variable of the MSG layer is not clean. */
+ /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */
SIMIX_vm_set_state(ind_vm, SURF_VM_STATE_CREATED);
}
-void SIMIX_pre_vm_shutdown(smx_simcall_t simcall, smx_host_t ind_vm){
- SIMIX_vm_shutdown(ind_vm, simcall->issuer);
+void SIMIX_pre_vm_shutdown(smx_simcall_t simcall, smx_host_t ind_vm)
+{
+ SIMIX_vm_shutdown(ind_vm, simcall->issuer);
+ SIMIX_simcall_answer(simcall);
}
xbt_assert((ind_vm != NULL), "Invalid parameters");
const char *hostname = SIMIX_host_get_name(ind_vm);
- smx_host_priv_t host_priv = SIMIX_host_priv(ind_vm);
-
/* this will call the registered callback function, i.e., SIMIX_host_destroy(). */
- xbt_lib_unset(host_lib, hostname, SIMIX_HOST_LEVEL);
+ xbt_lib_unset(host_lib, hostname, SIMIX_HOST_LEVEL, 1);
/* jump to vm_ws_destroy(). The surf level resource will be freed. */
surf_vm_workstation_model->extension.vm_workstation.destroy(ind_vm);
}
-void SIMIX_pre_vm_destroy(smx_simcall_t simcall, smx_host_t ind_vm){
- SIMIX_vm_destroy(ind_vm);
+void SIMIX_pre_vm_destroy(smx_simcall_t simcall, smx_host_t ind_vm)
+{
+ SIMIX_vm_destroy(ind_vm);
+ SIMIX_simcall_answer(simcall);
}
