#include "surf_private.h"
#include "surf/surf_resource.h"
#include "simgrid/sg_config.h"
-
-typedef struct workstation_VM2013 {
- s_surf_resource_t generic_resource; /* Must remain first to add this to a trace */
- surf_resource_t ind_physical_workstation; // Pointer to the host OS
- e_msg_vm_state_t current_state; // See include/msg/datatypes.h
-} s_workstation_VM2013_t, *workstation_VM2013_t;
+#include "vm_workstation_private.h"
+#include "surf/cpu_cas01_private.h"
+#include "surf/maxmin_private.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
"Logging specific to the SURF VM workstation module");
+
surf_model_t surf_vm_workstation_model = NULL;
-static void vm_ws_create (const char *name, void *ind_phys_workstation)
+static void vm_ws_create(const char *name, void *ind_phys_workstation)
{
workstation_VM2013_t vm_ws = xbt_new0(s_workstation_VM2013_t, 1);
-// TODO Complete the surf vm workstation model
- vm_ws->generic_resource.model = surf_vm_workstation_model;
- vm_ws->generic_resource.name = xbt_strdup(name);
+
+ vm_ws->sub_ws = surf_workstation_resource_priv(ind_phys_workstation);
+ vm_ws->current_state = SURF_VM_STATE_CREATED;
+
+
+ // //// WORKSTATION RELATED STUFF ////
+ /* Create a workstation_CLM03 resource and register it to the system
+ Please note that the new ws is added into the host_lib. Then,
+ if you want to get a workstation_VM2013 object from host_lib, see
+ ws->generic_resouce.model->type first. If it is SURF_MODEL_TYPE_VM_WORKSTATION,
+ you can cast ws to vm_ws. */
+
+ __init_workstation_CLM03(&vm_ws->ws, name);
+
+ // Override the model with the current VM one.
+ vm_ws->ws.generic_resource.model = surf_vm_workstation_model;
+
+
+ // //// CPU RELATED STUFF ////
+ // Roughly, create a vcpu resource by using the values of the sub_cpu one.
+ cpu_Cas01_t sub_cpu = surf_cpu_resource_priv(ind_phys_workstation);
+
+ /* We can assume one core and cas01 cpu for the first step.
+ * Do xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu) if you get the resource.
+ * */
+ cpu_cas01_create_resource(name, // name
+ sub_cpu->power_peak, // host->power_peak,
+ 1, // host->power_scale,
+ NULL, // host->power_trace,
+ 1, // host->core_amount,
+ SURF_RESOURCE_ON, // host->initial_state,
+ NULL, // host->state_trace,
+ NULL, // host->properties,
+ surf_cpu_model_vm);
+
+ vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, GUESTOS_NOISE);
+
+ //// NET RELATED STUFF ////
+ // Bind virtual net_elm to the host
+ // TODO rebind each time you migrate a VM
+ // TODO check how network requests are scheduled between distinct processes competing for the same card.
+ // Please note that the __init_workstation_CLM03 invocation assigned NULL to ws.net_elm since no network elements
+ // were previously created for this hostname. Indeed all network elements are created during the SimGrid initialization phase by considering
+ // the platform file.
+ vm_ws->ws.net_elm = xbt_lib_get_or_null(host_lib, vm_ws->sub_ws->generic_resource.name, ROUTING_HOST_LEVEL);
+ xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, vm_ws->ws.net_elm);
+
+ // //// STORAGE RELATED STUFF ////
// ind means ''indirect'' that this is a reference on the whole dict_elm structure (i.e not on the surf_resource_private infos)
- vm_ws->ind_physical_workstation = ind_phys_workstation;
- vm_ws->current_state=msg_vm_state_created,
- xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, vm_ws);
+
+
}
+/*
+ * Update the physical host of the given VM
+ */
+static void vm_ws_migrate(void *ind_vm_workstation, void *ind_dest_phys_workstation)
+{
+ /* ind_phys_workstation equals to smx_host_t */
+ workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
+ xbt_assert(vm_ws);
+
+ /* do something */
+
+ vm_ws->sub_ws = surf_workstation_resource_priv(ind_dest_phys_workstation);
+}
/*
* A physical host does not disapper in the current SimGrid code, but a VM may
* disapper during a simulation.
*/
-static void vm_ws_destroy(smx_host_t host)
+static void vm_ws_destroy(void *ind_vm_workstation)
{
- workstation_VM2013_t vm_ws = surf_workstation_resource_priv(host);
+ /* ind_phys_workstation equals to smx_host_t */
+ workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
+ cpu_Cas01_t sub_cpu = surf_cpu_resource_priv(ind_vm_workstation);
+
xbt_assert(vm_ws);
- xbt_assert(vm_ws->generic_resource.model == surf_vm_workstation_model);
+ xbt_assert(vm_ws->ws.generic_resource.model == surf_vm_workstation_model);
+
+ {
+ int ret = surf_cpu_model_pm->action_unref(vm_ws->cpu_action);
+ xbt_assert(ret == 1, "Bug: some resource still remains");
+ }
+
+ const char *name = vm_ws->ws.generic_resource.name;
+
+ // Remove all others in the lib associated to the VM
+ // Please note that you only remove the entries (and not free them)
+ xbt_lib_remove(host_lib, name);
+
+ //Free the CPU
+
+
+ // Free the net_elmts
+ // Nothing has to be done, because net_elmts is just a pointer on the physical one
+
+ // Free the storage
+ // Not relevant yet
+
+ //Free the WS
+ free(vm_ws);
- const char *name = vm_ws->generic_resource.name;
- /* not defined yet, but we should have */
- /* this will call surf_resource_free() */
- xbt_lib_unset(host_lib, name, SURF_WKS_LEVEL);
- xbt_free(vm_ws->generic_resource.name);
- xbt_free(vm_ws);
+ // Not yet implemented
+ /* NOTE: surf_resource_free() frees vm_ws->ws.generic_resource.name and
+ * vm_ws->ws. Do not free them here. */
}
static int vm_ws_get_state(void *ind_vm_ws){
static void vm_ws_set_state(void *ind_vm_ws, int state){
((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state=state;
}
+
+
+static double get_solved_value(surf_action_t cpu_action)
+{
+ int found = 0;
+ /* NOTE: Do not use surf_workstation_model's maxmin_system. It is not used. */
+ lmm_system_t pm_system = surf_cpu_model_pm->model_private->maxmin_system;
+ lmm_variable_t var = NULL;
+
+ xbt_swag_foreach(var, &pm_system->variable_set) {
+ XBT_DEBUG("var id %p id_int %d double %f", var->id, var->id_int, var->value);
+ if (var->id == cpu_action) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (found)
+ return var->value;
+
+ XBT_CRITICAL("bug: cannot found the solved variable of the action %p", cpu_action);
+ DIE_IMPOSSIBLE;
+ return -1; /* NOT REACHED */
+}
+
+
+static double vm_ws_share_resources(surf_model_t workstation_model, double now)
+{
+ /* 0. Make sure that we already calculated the resource share at the physical
+ * machine layer. */
+ {
+ unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, &surf_workstation_model);
+ unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, &surf_vm_workstation_model);
+ xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_workstation_model comes before");
+
+ /* Another option is that we call sub_ws->share_resource() here. The
+ * share_resource() function has no side-effect. We can call it here to
+ * ensure that. */
+ }
+
+
+ /* 1. Now we know how many resource should be assigned to each virtual
+ * machine. We update constraints of the virtual machine layer.
+ *
+ *
+ * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
+ * X1 + X2 = C (Equation 1)
+ * where
+ * the resource share of VM1: X1
+ * the resource share of VM2: X2
+ * the capacity of PM1: C
+ *
+ * Then, if we have two process (P1 and P2) on VM1.
+ * X1_1 + X1_2 = X1 (Equation 2)
+ * where
+ * the resource share of P1: X1_1
+ * the resource share of P2: X1_2
+ * the capacity of VM1: X1
+ *
+ * Equation 1 was solved in the physical machine layer.
+ * Equation 2 is solved in the virtual machine layer (here).
+ * X1 must be passed to the virtual machine laye as a constraint value.
+ *
+ **/
+
+ /* iterate for all hosts including virtual machines */
+ xbt_lib_cursor_t cursor;
+ char *key;
+ void **ind_host;
+ xbt_lib_foreach(host_lib, cursor, key, ind_host) {
+ workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
+ cpu_Cas01_t cpu_cas01 = ind_host[SURF_CPU_LEVEL];
+
+ /* skip if it is not a virtual machine */
+ if (!ws_clm03)
+ continue;
+ if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
+ continue;
+ xbt_assert(cpu_cas01, "cpu-less workstation");
+
+ /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
+ workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
+
+ double solved_value = get_solved_value(ws_vm2013->cpu_action);
+ XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
+ ws_clm03->generic_resource.name, ws_vm2013->sub_ws->generic_resource.name);
+
+ cpu_cas01->constraint->bound = solved_value;
+ }
+
+
+ /* 2. Calculate resource share at the virtual machine layer. */
+ double ret = ws_share_resources(workstation_model, now);
+
+
+ /* FIXME: 3. do we have to re-initialize our cpu_action object? */
+#if 1
+ /* iterate for all hosts including virtual machines */
+ xbt_lib_foreach(host_lib, cursor, key, ind_host) {
+ workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
+
+ /* skip if it is not a virtual machine */
+ if (!ws_clm03)
+ continue;
+ if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
+ continue;
+
+ /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
+ workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
+ {
+ void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.name);
+ surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
+ ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 100); // cost 0 is okay?
+ }
+ }
+#endif
+
+
+ return ret;
+}
+
+
+/*
+ * A surf level object will be useless in the upper layer. Returing the name
+ * will be simple and suffcient.
+ **/
+static const char *vm_ws_get_phys_host(void *ind_vm_ws)
+{
+ workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
+ return vm_ws->sub_ws->generic_resource.name;
+}
+
static void surf_vm_workstation_model_init_internal(void)
{
- surf_vm_workstation_model = surf_model_init();
+ surf_model_t model = surf_model_init();
+
+ model->name = "Virtual Workstation";
+ model->type = SURF_MODEL_TYPE_VM_WORKSTATION;
+ // model->action_unref = ws_action_unref;
+ // model->action_cancel = ws_action_cancel;
+ // model->action_state_set = ws_action_state_set;
+
+
+ model->model_private->share_resources = vm_ws_share_resources;
+ model->model_private->resource_used = ws_resource_used;
+ model->model_private->update_actions_state = ws_update_actions_state;
+ model->model_private->update_resource_state = ws_update_resource_state;
+ model->model_private->finalize = ws_finalize;
+
+
+// model->suspend = ws_action_suspend;
+// model->resume = ws_action_resume;
+// model->is_suspended = ws_action_is_suspended;
+// model->set_max_duration = ws_action_set_max_duration;
+ model->set_priority = ws_action_set_priority;
+// #ifdef HAVE_TRACING
+// model->set_category = ws_action_set_category;
+// #endif
+// model->get_remains = ws_action_get_remains;
+// #ifdef HAVE_LATENCY_BOUND_TRACKING
+// model->get_latency_limited = ws_get_latency_limited;
+// #endif
+
+
+
+
+
+
+
+ xbt_assert(surf_cpu_model_vm);
+ model->extension.workstation.cpu_model = surf_cpu_model_vm;
+
+ model->extension.workstation.execute = ws_execute;
+ // model->extension.workstation.sleep = ws_action_sleep;
+ model->extension.workstation.get_state = ws_get_state;
+ // model->extension.workstation.get_speed = ws_get_speed;
+ // model->extension.workstation.get_available_speed = ws_get_available_speed;
+
+ // model->extension.workstation.communicate = ws_communicate;
+ // model->extension.workstation.get_route = ws_get_route;
+ // model->extension.workstation.execute_parallel_task = ws_execute_parallel_task;
+ // model->extension.workstation.get_link_bandwidth = ws_get_link_bandwidth;
+ // model->extension.workstation.get_link_latency = ws_get_link_latency;
+ // model->extension.workstation.link_shared = ws_link_shared;
+ // model->extension.workstation.get_properties = ws_get_properties;
+
+ // model->extension.workstation.open = ws_action_open;
+ // model->extension.workstation.close = ws_action_close;
+ // model->extension.workstation.read = ws_action_read;
+ // model->extension.workstation.write = ws_action_write;
+ // model->extension.workstation.stat = ws_action_stat;
+ // model->extension.workstation.unlink = ws_action_unlink;
+ // model->extension.workstation.ls = ws_action_ls;
- surf_vm_workstation_model->name = "Virtual Workstation";
- surf_vm_workstation_model->extension.vm_workstation.create = vm_ws_create;
- surf_vm_workstation_model->extension.vm_workstation.set_state = vm_ws_set_state;
- surf_vm_workstation_model->extension.vm_workstation.get_state = vm_ws_get_state;
- surf_vm_workstation_model->extension.vm_workstation.destroy = vm_ws_destroy;
+ model->extension.vm_workstation.create = vm_ws_create;
+ model->extension.vm_workstation.set_state = vm_ws_set_state;
+ model->extension.vm_workstation.get_state = vm_ws_get_state;
+ model->extension.vm_workstation.migrate = vm_ws_migrate;
+ model->extension.vm_workstation.get_phys_host = vm_ws_get_phys_host;
+ model->extension.vm_workstation.destroy = vm_ws_destroy;
+ surf_vm_workstation_model = model;
}
void surf_vm_workstation_model_init()
{
surf_vm_workstation_model_init_internal();
xbt_dynar_push(model_list, &surf_vm_workstation_model);
+ xbt_dynar_push(model_list_invoke, &surf_vm_workstation_model);
}
