XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_vm, msg,
"Cloud-oriented parts of the MSG API");
-/** @brief Create a new (empty) VMs
+/** @brief Create a new VM (the VM is just attached to the location but it is not started yet).
* @ingroup msg_VMs
+ */
+
+msg_vm_t MSG_vm_create(msg_host_t location, const char *name,
+ int core_nb, int mem_cap, int net_cap){
+
+ // Note new and vm_workstation refer to the same area (due to the lib/dict appraoch)
+ msg_vm_t new = NULL;
+ void *vm_workstation = NULL;
+ // Ask simix to create the surf vm resource
+ vm_workstation = simcall_vm_create(name,location);
+ new = (msg_vm_t) __MSG_host_create(vm_workstation);
+
+
+ MSG_vm_set_property_value(new, "CORE_NB", bprintf("%d", core_nb), free);
+ MSG_vm_set_property_value(new, "MEM_CAP", bprintf("%d", core_nb), free);
+ MSG_vm_set_property_value(new, "NET_CAP", bprintf("%d", core_nb), free);
+
+ #ifdef HAVE_TRACING
+ TRACE_msg_vm_create(name, location);
+ #endif
+ return new;
+}
+
+/** \ingroup m_host_management
+ * \brief Returns the value of a given host property
+ *
+ * \param host a host
+ * \param name a property name
+ * \return value of a property (or NULL if property not set)
+ */
+const char *MSG_host_get_property_value(msg_host_t host, const char *name)
+{
+ return xbt_dict_get_or_null(MSG_host_get_properties(host), name);
+}
+
+/** \ingroup m_host_management
+ * \brief Returns a xbt_dict_t consisting of the list of properties assigned to this host
*
- * @bug it is expected that in the future, the coreAmount parameter will be used
- * to add extra constraints on the execution, but the argument is ignored for now.
+ * \param host a host
+ * \return a dict containing the properties
*/
+xbt_dict_t MSG_host_get_properties(msg_host_t host)
+{
+ xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
-msg_vm_t MSG_vm_start(m_host_t location, int coreAmount) {
- msg_vm_t res = xbt_new0(s_msg_vm_t,1);
- res->all_vms_hookup.prev = NULL;
- res->host_vms_hookup.prev = NULL;
- res->state = msg_vm_state_running;
- res->location = location;
- res->coreAmount = coreAmount;
- res->processes = xbt_dynar_new(sizeof(m_process_t),NULL);
+ return (simcall_host_get_properties(host));
+}
- xbt_swag_insert(res,msg_global->vms);
- xbt_swag_insert(res,location->vms);
+/** \ingroup m_host_management
+ * \brief Change the value of a given host property
+ *
+ * \param host a host
+ * \param name a property name
+ * \param value what to change the property to
+ * \param free_ctn the freeing function to use to kill the value on need
+ */
+void MSG_vm_set_property_value(msg_vm_t vm, const char *name, void *value,void_f_pvoid_t free_ctn) {
- return res;
+ xbt_dict_set(MSG_host_get_properties(vm), name, value,free_ctn);
}
-/** @brief Returns a newly constructed dynar containing all existing VMs in the system
+
+/** @brief Immediately suspend the execution of all processes within the given VM.
+ * @ingroup msg_VMs
+ * return wheter the VM has been correctly started (0) or not (<0)
+ *
+ */
+int MSG_vm_start(msg_vm_t vm) {
+ // TODO Please complete the code
+
+ #ifdef HAVE_TRACING
+ TRACE_msg_vm_start(vm);
+ #endif
+}
+
+/** @brief Returns a newly constructed dynar containing all existing VMs in the system.
* @ingroup msg_VMs
*
* Don't forget to free the dynar after use.
*
* Afterward, when the VM is migrated or suspended or whatever, the process will have the corresponding handling, too.
*
- * @bug for now, if a binded process terminates, every VM functions will segfault. Baaaad.
- */
-void MSG_vm_bind(msg_vm_t vm, m_process_t process) {
- /* check if the process is already in a VM */
- simdata_process_t simdata = simcall_process_get_data(process);
- if (simdata->vm) {
- msg_vm_t old_vm = simdata->vm;
- int pos = xbt_dynar_search(old_vm->processes,&process);
- xbt_dynar_remove_at(old_vm->processes,pos, NULL);
- }
- /* check if the host is in the right host */
- if (simdata->m_host != vm->location) {
- MSG_process_migrate(process,vm->location);
- }
- simdata->vm = vm;
-
- XBT_DEBUG("binding Process %s to %p",MSG_process_get_name(process),vm);
-
- xbt_dynar_push_as(vm->processes,m_process_t,process);
+ */
+void MSG_vm_bind(msg_vm_t vm, msg_process_t process) {
+ /* check if the process is already in a VM */
+ simdata_process_t simdata = simcall_process_get_data(process);
+ if (simdata->vm) {
+ msg_vm_t old_vm = simdata->vm;
+ int pos = xbt_dynar_search(old_vm->processes,&process);
+ xbt_dynar_remove_at(old_vm->processes,pos, NULL);
+ }
+ /* check if the host is in the right host */
+ if (simdata->m_host != vm->location) {
+ MSG_process_migrate(process,vm->location);
+ }
+ simdata->vm = vm;
+
+ XBT_DEBUG("binding Process %s to %p",MSG_process_get_name(process),vm);
+
+ xbt_dynar_push_as(vm->processes,msg_process_t,process);
}
/** @brief Removes the given process from the given VM, and kill it
* @ingroup msg_VMs
*
* Will raise a not_found exception if the process were not binded to that VM
*/
-void MSG_vm_unbind(msg_vm_t vm, m_process_t process) {
+void MSG_vm_unbind(msg_vm_t vm, msg_process_t process) {
int pos = xbt_dynar_search(vm->processes,process);
xbt_dynar_remove_at(vm->processes,pos, NULL);
MSG_process_kill(process);
}
-/** @brief Immediately change the host on which all processes are running
+/** @brief Immediately change the host on which all processes are running.
* @ingroup msg_VMs
*
* No migration cost occurs. If you want to simulate this too, you want to use a
* MSG_task_send() before or after, depending on whether you want to do cold or hot
* migration.
*/
-void MSG_vm_migrate(msg_vm_t vm, m_host_t destination) {
+void MSG_vm_migrate(msg_vm_t vm, msg_host_t destination) {
unsigned int cpt;
- m_process_t process;
+ msg_process_t process;
xbt_dynar_foreach(vm->processes,cpt,process) {
MSG_process_migrate(process,destination);
}
- xbt_swag_remove(vm,vm->location->vms);
- xbt_swag_insert_at_tail(vm,destination->vms);
+ xbt_swag_remove(vm, MSG_host_priv(vm->location)->vms);
+ xbt_swag_insert_at_tail(vm, MSG_host_priv(destination)->vms);
+
+ #ifdef HAVE_TRACING
+ TRACE_msg_vm_change_host(vm,vm->location,destination);
+ #endif
+
vm->location = destination;
}
-/** @brief Immediately suspend the execution of all processes within the given VM
+/** @brief Immediately suspend the execution of all processes within the given VM.
* @ingroup msg_VMs
*
* No suspension cost occurs. If you want to simulate this too, you want to
*/
void MSG_vm_suspend(msg_vm_t vm) {
unsigned int cpt;
- m_process_t process;
+ msg_process_t process;
xbt_dynar_foreach(vm->processes,cpt,process) {
XBT_DEBUG("suspend process %s of host %s",MSG_process_get_name(process),MSG_host_get_name(MSG_process_get_host(process)));
MSG_process_suspend(process);
}
+
+ #ifdef HAVE_TRACING
+ TRACE_msg_vm_suspend(vm);
+ #endif
}
-/** @brief Immediately resumes the execution of all processes within the given VM
+/** @brief Immediately resumes the execution of all processes within the given VM.
* @ingroup msg_VMs
*
* No resume cost occurs. If you want to simulate this too, you want to
*/
void MSG_vm_resume(msg_vm_t vm) {
unsigned int cpt;
- m_process_t process;
+ msg_process_t process;
xbt_dynar_foreach(vm->processes,cpt,process) {
- XBT_DEBUG("resume process %s of host %s",MSG_process_get_name(process),MSG_host_get_name(MSG_process_get_host(process)));
+ XBT_DEBUG("resume process %s of host %s",MSG_process_get_name(process),MSG_host_get_name(MSG_process_get_host(process)));
MSG_process_resume(process);
}
+
+ #ifdef HAVE_TRACING
+ TRACE_msg_vm_resume(vm);
+ #endif
}
/** @brief Immediately kills all processes within the given VM. Any memory that they allocated will be leaked.
*/
void MSG_vm_shutdown(msg_vm_t vm)
{
- m_process_t process;
+ msg_process_t process;
XBT_DEBUG("%lu processes in the VM", xbt_dynar_length(vm->processes));
while (xbt_dynar_length(vm->processes) > 0) {
- process = xbt_dynar_get_as(vm->processes,0,m_process_t);
- MSG_process_kill(process);
+ process = xbt_dynar_get_as(vm->processes,0,msg_process_t);
+ MSG_process_kill(process);
}
+
+ #ifdef HAVE_TRACING
+ TRACE_msg_vm_kill(vm);
+ #endif
+
}
+/**
+ * \ingroup msg_VMs
+ * \brief Reboot the VM, restarting all the processes in it.
+ */
+void MSG_vm_reboot(msg_vm_t vm)
+{
+ xbt_dynar_t new_processes = xbt_dynar_new(sizeof(msg_process_t),NULL);
+
+ msg_process_t process;
+ unsigned int cpt;
+ xbt_dynar_foreach(vm->processes,cpt,process) {
+ msg_process_t new_process = MSG_process_restart(process);
+ xbt_dynar_push_as(new_processes,msg_process_t,new_process);
+
+ }
+
+ xbt_dynar_foreach(new_processes, cpt, process) {
+ MSG_vm_bind(vm,process);
+ }
+
+ xbt_dynar_free(&new_processes);
+}
/** @brief Destroy a msg_vm_t.
* @ingroup msg_VMs
*/
void MSG_vm_destroy(msg_vm_t vm) {
- unsigned int cpt;
- m_process_t process;
- xbt_dynar_foreach(vm->processes,cpt,process) {
- //FIXME: Slow ?
- simdata_process_t simdata = simcall_process_get_data(process);
- simdata->vm = NULL;
- }
- xbt_dynar_free(&vm->processes);
- xbt_free(vm);
+ unsigned int cpt;
+ msg_process_t process;
+ xbt_dynar_foreach(vm->processes,cpt,process) {
+ //FIXME: Slow ?
+ simdata_process_t simdata = simcall_process_get_data(process);
+ simdata->vm = NULL;
+ }
+
+ #ifdef HAVE_TRACING
+ TRACE_msg_vm_end(vm);
+ #endif
+
+
+ xbt_dynar_free(&vm->processes);
+ xbt_free(vm);
}
