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 (empty) VMs.
* @ingroup msg_VMs
*
* @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.
*/
-msg_vm_t MSG_vm_start(m_host_t location, int coreAmount) {
+msg_vm_t MSG_vm_start(msg_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);
+ res->processes = xbt_dynar_new(sizeof(msg_process_t),NULL);
xbt_swag_insert(res,msg_global->vms);
xbt_swag_insert(res,location->vms);
return res;
}
-/** @brief Returns a newly constructed dynar containing all existing VMs in the system
+/** @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) {
- 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);
}
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_INFO("suspend process %s of host %s",MSG_process_get_name(process),MSG_host_get_name(MSG_process_get_host(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);
}
}
-/** @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_INFO("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);
}
}
* No extra delay occurs. If you want to simulate this too, you want to
* use a #MSG_process_sleep() or something. I'm not quite sure.
*/
-void MSG_vm_shutdown(msg_vm_t vm) {
+void MSG_vm_shutdown(msg_vm_t vm)
+{
+ 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,msg_process_t);
+ MSG_process_kill(process);
+ }
+}
+/**
+ * \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;
- m_process_t process;
+
xbt_dynar_foreach(vm->processes,cpt,process) {
- MSG_process_kill(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;
+ 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;
}
+ xbt_dynar_free(&vm->processes);
+ xbt_free(vm);
}
