-/* Copyright (c) 2007-2012. The SimGrid Team.
+/* Copyright (c) 2007-2014. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
#include "xbt/dict.h"
#include "mc/mc.h"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix,
- "Logging specific to SIMIX (vms)");
+//If you need to log some stuffs, just uncomment these two lines and uses XBT_DEBUG for instance
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_vm, simix, "Logging specific to SIMIX (vms)");
+
/* **** create a VM **** */
/**
* \param name name of the host to create
* \param data some user data (may be NULL)
*/
-smx_host_t SIMIX_vm_create(const char *name, smx_host_t phys_host)
+smx_host_t SIMIX_vm_create(const char *name, smx_host_t ind_phys_host)
{
+ /* Create surf associated resource */
+ surf_vm_workstation_model_create(name, ind_phys_host);
- smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
- s_smx_process_t proc;
+ smx_host_t smx_host = SIMIX_host_create(name, ind_phys_host, NULL);
- // TODO check why we do not have any VM here and why we have the host_proc_hookup ?
+ /* 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. */
- /* Host structure */
- smx_host->data = NULL;
- smx_host->process_list =
- xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
+ return smx_host;
+}
- /* 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, phys_host);
+/* works for VMs and PMs */
+static long host_get_ramsize(smx_host_t vm, int *overcommit)
+{
+ s_ws_params_t params;
+ surf_workstation_get_params(vm, ¶ms);
- return xbt_lib_get_elm_or_null(host_lib, name);
+ if (overcommit)
+ *overcommit = params.overcommit;
+
+ return params.ramsize;
}
+/* **** start a VM **** */
+static int __can_be_started(smx_host_t vm)
+{
+ smx_host_t pm = surf_vm_workstation_get_pm(vm);
-smx_host_t SIMIX_pre_vm_create(smx_simcall_t simcall, const char *name, smx_host_t phys_host){
- return SIMIX_vm_create(name, phys_host);
-}
+ int pm_overcommit = 0;
+ long pm_ramsize = host_get_ramsize(pm, &pm_overcommit);
+ long vm_ramsize = host_get_ramsize(vm, NULL);
+ if (!pm_ramsize) {
+ /* We assume users do not want to care about ramsize. */
+ return 1;
+ }
-/* **** start a VM **** */
-int __can_be_started(smx_host_t vm){
- // TODO add checking code related to overcommitment or not.
+ 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_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 vm){
- //TODO only start the VM if you can
- if (can_be_started(vm))
- SIMIX_set_vm_state(vm, msg_vm_state_running);
+void SIMIX_vm_start(smx_host_t ind_vm)
+{
+ if (__can_be_started(ind_vm))
+ surf_resource_set_state(surf_workstation_resource_priv(ind_vm),
+ (int)SURF_VM_STATE_RUNNING);
else
- THROWF(vm_error, 0, "The VM %s cannot be started", SIMIX_host_get_name(vm));
+ 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 vm){
- SIMIX_vm_start(vm);
-}
-
-/* ***** set/get state of a VM ***** */
-void SIMIX_set_vm_state(smx_host_t vm, int state){
-
-}
-void SIMIX_prev_set_vm_state(smx_host_t vm, int state){
- SIMIX_set_vm_state(vm, state);
-}
-int SIMIX_get_vm_state(smx_host_t vm){
- return surf_vm_workstation_model->extension.vm_workstation.get_state(vm);
-}
-int SIMIX_pre_vm_state(smx_host_t vm){
- return SIMIX_get_vm_state(vm);
+int SIMIX_vm_get_state(smx_host_t ind_vm)
+{
+ return surf_resource_get_state(surf_workstation_resource_priv(ind_vm));
}
/**
- * \brief Function to destroy a SIMIX VM host.
+ * \brief Function to migrate a SIMIX VM host.
*
- * \param host the vm host to destroy (a smx_host_t)
+ * \param host the vm host to migrate (a smx_host_t)
*/
-void SIMIX_vm_destroy(smx_host_t host)
+void SIMIX_vm_migrate(smx_host_t ind_vm, smx_host_t ind_dst_pm)
{
- /* this code basically performs a similar thing like SIMIX_host_destroy() */
+ /* precopy migration makes the VM temporally paused */
+ xbt_assert(SIMIX_vm_get_state(ind_vm) == SURF_VM_STATE_SUSPENDED);
- xbt_assert((host != NULL), "Invalid parameters");
- char *hostname = host->key;
-
- smx_host_priv_t host_priv = SIMIX_host_priv(host);
-
- /* this will call the registered callback function, i.e., SIMIX_host_destroy(). */
- xbt_lib_unset(host_lib, hostname, SIMIX_HOST_LEVEL)
-
- /* jump to vm_ws_destroy(). The surf level resource will be freed. */
- surf_vm_workstation_model->extension.vm_workstation.destroy(host);
+ /* jump to vm_ws_xigrate(). this will update the vm location. */
+ surf_vm_workstation_migrate(ind_vm, ind_dst_pm);
}
-void SIMIX_pre_vm_destroy(smx_simcall_t simcall, smx_host_t vm){
- SIMIX_vm_start(vm);
-}
-
-smx_host_t SIMIX_host_get_by_name(const char *name){
- xbt_assert(((simix_global != NULL)
- && (host_lib != NULL)),
- "Environment not set yet");
+/**
+ * \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(smx_host_t vm, smx_host_t src_pm, smx_host_t dst_pm)
+{
+ /* deinstall the current affinity setting for the CPU */
+ SIMIX_vm_set_affinity(vm, src_pm, 0);
- return xbt_lib_get_elm_or_null(host_lib, name);
-}
+ /* 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);
+}
-smx_host_t SIMIX_host_self(void)
+/**
+ * \brief Function to get the physical host of the given SIMIX VM host.
+ *
+ * \param host the vm host to get_phys_host (a smx_host_t)
+ */
+void *SIMIX_vm_get_pm(smx_host_t ind_vm)
{
- smx_process_t process = SIMIX_process_self();
- return (process == NULL) ? NULL : SIMIX_process_get_host(process);
+ /* jump to vm_ws_get_pm(). this will return the vm name. */
+ return surf_vm_workstation_get_pm(ind_vm);
}
-const char* SIMIX_pre_host_self_get_name(smx_simcall_t simcall){
- return SIMIX_host_self_get_name();
-}
-/* needs to be public and without simcall because it is called
- by exceptions and logging events */
-const char* SIMIX_host_self_get_name(void)
+/**
+ * \brief Function to set the CPU bound of the given SIMIX VM host.
+ *
+ * \param host the vm host (a smx_host_t)
+ * \param bound bound (a double)
+ */
+void SIMIX_vm_set_bound(smx_host_t ind_vm, double bound)
{
- smx_host_t host = SIMIX_host_self();
- if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
- return "";
-
- return SIMIX_host_get_name(host);
+ /* jump to vm_ws_set_vm_bound(). */
+ surf_vm_workstation_set_bound(ind_vm, bound);
}
-const char* SIMIX_pre_host_get_name(smx_simcall_t simcall, smx_host_t host){
- return SIMIX_host_get_name(host);
-}
-const char* SIMIX_host_get_name(smx_host_t host){
- xbt_assert((host != NULL), "Invalid parameters");
-
- return sg_host_name(host);
-}
+/**
+ * \brief Function to set the CPU affinity of the given SIMIX VM host.
+ *
+ * \param host the vm host (a smx_host_t)
+ * \param host the pm host (a smx_host_t)
+ * \param mask affinity mask (a unsigned long)
+ */
+void SIMIX_vm_set_affinity(smx_host_t ind_vm, smx_host_t ind_pm, unsigned long mask)
+{
+ /* make sure this at the MSG layer. */
+ xbt_assert(SIMIX_vm_get_pm(ind_vm) == ind_pm);
-xbt_dict_t SIMIX_pre_host_get_properties(smx_simcall_t simcall, smx_host_t host){
- return SIMIX_host_get_properties(host);
+ /* jump to vm_ws_set_vm_affinity(). */
+ surf_vm_workstation_set_affinity(ind_vm, ind_pm, mask);
}
-xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
- xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
- return surf_workstation_model->extension.workstation.get_properties(host);
-}
-double SIMIX_pre_host_get_speed(smx_simcall_t simcall, smx_host_t host){
- return SIMIX_host_get_speed(host);
-}
-double SIMIX_host_get_speed(smx_host_t host){
- xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+/**
+ * \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 smx_host_t)
+ */
+void SIMIX_vm_suspend(smx_host_t ind_vm, smx_process_t issuer)
+{
+ const char *name = SIMIX_host_get_name(ind_vm);
- return surf_workstation_model->extension.workstation.
- get_speed(host, 1.0);
-}
+ if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_RUNNING)
+ THROWF(vm_error, 0, "VM(%s) is not running", name);
-double SIMIX_pre_host_get_available_speed(smx_simcall_t simcall, smx_host_t host){
- return SIMIX_host_get_available_speed(host);
-}
-double SIMIX_host_get_available_speed(smx_host_t host){
- xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+ XBT_DEBUG("suspend VM(%s), where %d processes exist", name, xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
- return surf_workstation_model->extension.workstation.
- get_available_speed(host);
-}
+ /* jump to vm_ws_suspend. The state will be set. */
+ surf_vm_workstation_suspend(ind_vm);
-int SIMIX_pre_host_get_state(smx_simcall_t simcall, smx_host_t host){
- return SIMIX_host_get_state(host);
-}
-int SIMIX_host_get_state(smx_host_t host){
- xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+ 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", smx_process->name);
+ SIMIX_process_suspend(smx_process, issuer);
+ }
- return surf_workstation_model->extension.workstation.
- get_state(host);
+ XBT_DEBUG("suspend all processes on the VM done done");
}
-void* SIMIX_pre_host_self_get_data(smx_simcall_t simcall){
- return SIMIX_host_self_get_data();
-}
-void* SIMIX_host_self_get_data(void)
+void simcall_HANDLER_vm_suspend(smx_simcall_t simcall, smx_host_t ind_vm)
{
- smx_host_t self = SIMIX_host_self();
- return SIMIX_host_get_data(self);
-}
+ if (simcall->issuer->smx_host == ind_vm) {
+ XBT_ERROR("cannot suspend the VM where I run");
+ DIE_IMPOSSIBLE;
+ }
-void SIMIX_host_self_set_data(void *data)
-{
- smx_host_t self = SIMIX_host_self();
- SIMIX_host_set_data(self, data);
-}
+ SIMIX_vm_suspend(ind_vm, simcall->issuer);
-void* SIMIX_pre_host_get_data(smx_simcall_t simcall,smx_host_t host){
- return SIMIX_host_get_data(host);
+ XBT_DEBUG("simcall_HANDLER_vm_suspend done");
}
-void* SIMIX_host_get_data(smx_host_t host){
- xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
- return SIMIX_host_priv(host)->data;
-}
-void _SIMIX_host_free_process_arg(void *);
-void _SIMIX_host_free_process_arg(void *data)
-{
- smx_process_arg_t arg = *(void**)data;
- xbt_free(arg->name);
- xbt_free(arg);
-}
+
/**
- * \brief Add a process to the list of the processes that the host will restart when it comes back
- * This function add a process to the list of the processes that will be restarted when the host comes
- * back. It is expected that this function is called when the host is down.
- * The processes will only be restarted once, meaning that you will have to register the process
- * again to restart the process again.
+ * \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 smx_host_t)
*/
-void SIMIX_host_add_auto_restart_process(smx_host_t host,
- const char *name,
- xbt_main_func_t code,
- void *data,
- const char *hostname,
- double kill_time,
- int argc, char **argv,
- xbt_dict_t properties,
- int auto_restart)
+void SIMIX_vm_resume(smx_host_t ind_vm, smx_process_t issuer)
{
- if (!SIMIX_host_priv(host)->auto_restart_processes) {
- SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
- }
- smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
- arg->name = xbt_strdup(name);
- arg->code = code;
- arg->data = data;
- arg->hostname = hostname;
- arg->kill_time = kill_time;
- arg->argc = argc;
-
- arg->argv = xbt_new(char*,argc + 1);
-
- int i;
- for (i = 0; i < argc; i++) {
- arg->argv[i] = xbt_strdup(argv[i]);
- }
- arg->argv[argc] = NULL;
+ const char *name = SIMIX_host_get_name(ind_vm);
- arg->properties = properties;
- arg->auto_restart = auto_restart;
+ if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_SUSPENDED)
+ THROWF(vm_error, 0, "VM(%s) was not suspended", name);
- if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
- && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
- xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
- XBT_DEBUG("Have push host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
- }
- xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
-}
-/**
- * \brief Restart the list of processes that have been registered to the host
- */
-void SIMIX_host_restart_processes(smx_host_t host)
-{
- unsigned int cpt;
- smx_process_arg_t arg;
- xbt_dynar_foreach(SIMIX_host_priv(host)->auto_restart_processes,cpt,arg) {
-
- smx_process_t process;
-
- XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
- if (simix_global->create_process_function) {
- simix_global->create_process_function(&process,
- arg->argv[0],
- arg->code,
- NULL,
- arg->hostname,
- arg->kill_time,
- arg->argc,
- arg->argv,
- arg->properties,
- arg->auto_restart);
- }
- else {
- simcall_process_create(&process,
- arg->argv[0],
- arg->code,
- NULL,
- arg->hostname,
- arg->kill_time,
- arg->argc,
- arg->argv,
- arg->properties,
- arg->auto_restart);
+ 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_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", smx_process->name);
+ SIMIX_process_resume(smx_process, issuer);
}
- xbt_dynar_reset(SIMIX_host_priv(host)->auto_restart_processes);
}
-void SIMIX_host_autorestart(smx_host_t host)
+void simcall_HANDLER_vm_resume(smx_simcall_t simcall, smx_host_t ind_vm)
{
- if(simix_global->autorestart)
- simix_global->autorestart(host);
- else
- xbt_die("No function for simix_global->autorestart");
-}
-
-void SIMIX_pre_host_set_data(smx_simcall_t simcall, smx_host_t host, void *data) {
- SIMIX_host_set_data(host, data);
+ SIMIX_vm_resume(ind_vm, simcall->issuer);
}
-void SIMIX_host_set_data(smx_host_t host, void *data){
- xbt_assert((host != NULL), "Invalid parameters");
- xbt_assert((SIMIX_host_priv(host)->data == NULL), "Data already set");
- SIMIX_host_priv(host)->data = data;
-}
-
-smx_action_t SIMIX_pre_host_execute(smx_simcall_t simcall,const char *name,
- smx_host_t host, double computation_amount, double priority){
- return SIMIX_host_execute(name, host, computation_amount, priority);
-}
-smx_action_t SIMIX_host_execute(const char *name,
- smx_host_t host, double computation_amount, double priority){
-
- /* alloc structures and initialize */
- smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
- action->type = SIMIX_ACTION_EXECUTE;
- action->name = xbt_strdup(name);
- action->state = SIMIX_RUNNING;
- action->execution.host = host;
-
-#ifdef HAVE_TRACING
- action->category = NULL;
-#endif
-
- /* set surf's action */
- if (!MC_is_active()) {
- action->execution.surf_exec =
- surf_workstation_model->extension.workstation.execute(host,
- computation_amount);
- surf_workstation_model->action_data_set(action->execution.surf_exec, action);
- surf_workstation_model->set_priority(action->execution.surf_exec, priority);
- }
- XBT_DEBUG("Create execute action %p", action);
+/**
+ * \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 smx_host_t)
+ */
+void SIMIX_vm_save(smx_host_t ind_vm, smx_process_t issuer)
+{
+ const char *name = SIMIX_host_get_name(ind_vm);
- return action;
-}
+ if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_RUNNING)
+ THROWF(vm_error, 0, "VM(%s) is not running", name);
-smx_action_t SIMIX_pre_host_parallel_execute(smx_simcall_t simcall, const char *name,
- int host_nb, smx_host_t *host_list,
- double *computation_amount, double *communication_amount,
- double amount, double rate){
- return SIMIX_host_parallel_execute(name, host_nb, host_list, computation_amount,
- communication_amount, amount, rate);
-}
-smx_action_t SIMIX_host_parallel_execute(const char *name,
- int host_nb, smx_host_t *host_list,
- double *computation_amount, double *communication_amount,
- double amount, double rate){
-
- void **workstation_list = NULL;
- int i;
-
- /* alloc structures and initialize */
- smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
- action->type = SIMIX_ACTION_PARALLEL_EXECUTE;
- action->name = xbt_strdup(name);
- action->state = SIMIX_RUNNING;
- action->execution.host = NULL; /* FIXME: do we need the list of hosts? */
-
-#ifdef HAVE_TRACING
- action->category = NULL;
-#endif
-
- /* set surf's action */
- workstation_list = xbt_new0(void *, host_nb);
- for (i = 0; i < host_nb; i++)
- workstation_list[i] = host_list[i];
-
- /* set surf's action */
- if (!MC_is_active()) {
- action->execution.surf_exec =
- surf_workstation_model->extension.workstation.
- execute_parallel_task(host_nb, workstation_list, computation_amount,
- communication_amount, rate);
-
- surf_workstation_model->action_data_set(action->execution.surf_exec, action);
- }
- XBT_DEBUG("Create parallel execute action %p", action);
- return action;
-}
+ XBT_DEBUG("save VM(%s), where %d processes exist", name, xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
-void SIMIX_pre_host_execution_destroy(smx_simcall_t simcall, smx_action_t action){
- SIMIX_host_execution_destroy(action);
-}
-void SIMIX_host_execution_destroy(smx_action_t action){
- XBT_DEBUG("Destroy action %p", action);
+ /* jump to vm_ws_save() */
+ surf_vm_workstation_save(ind_vm);
- if (action->execution.surf_exec) {
- surf_workstation_model->action_unref(action->execution.surf_exec);
- action->execution.surf_exec = NULL;
+ 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", smx_process->name);
+ SIMIX_process_suspend(smx_process, issuer);
}
- xbt_free(action->name);
- xbt_mallocator_release(simix_global->action_mallocator, action);
}
-void SIMIX_pre_host_execution_cancel(smx_simcall_t simcall, smx_action_t action){
- SIMIX_host_execution_cancel(action);
-}
-void SIMIX_host_execution_cancel(smx_action_t action){
- XBT_DEBUG("Cancel action %p", action);
-
- if (action->execution.surf_exec)
- surf_workstation_model->action_cancel(action->execution.surf_exec);
-}
-
-double SIMIX_pre_host_execution_get_remains(smx_simcall_t simcall, smx_action_t action){
- return SIMIX_host_execution_get_remains(action);
-}
-double SIMIX_host_execution_get_remains(smx_action_t action){
- double result = 0.0;
-
- if (action->state == SIMIX_RUNNING)
- result = surf_workstation_model->get_remains(action->execution.surf_exec);
-
- return result;
+void simcall_HANDLER_vm_save(smx_simcall_t simcall, smx_host_t ind_vm)
+{
+ SIMIX_vm_save(ind_vm, simcall->issuer);
}
-e_smx_state_t SIMIX_pre_host_execution_get_state(smx_simcall_t simcall, smx_action_t action){
- return SIMIX_host_execution_get_state(action);
-}
-e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action){
- return action->state;
-}
-void SIMIX_pre_host_execution_set_priority(smx_simcall_t simcall, smx_action_t action,
- double priority){
- return SIMIX_host_execution_set_priority(action, priority);
-}
-void SIMIX_host_execution_set_priority(smx_action_t action, double priority){
- if(action->execution.surf_exec)
- surf_workstation_model->set_priority(action->execution.surf_exec, priority);
-}
+/**
+ * \brief Function to restore 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 restore (a smx_host_t)
+ */
+void SIMIX_vm_restore(smx_host_t ind_vm, smx_process_t issuer)
+{
+ const char *name = SIMIX_host_get_name(ind_vm);
-void SIMIX_pre_host_execution_wait(smx_simcall_t simcall, smx_action_t action){
+ if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_SAVED)
+ THROWF(vm_error, 0, "VM(%s) was not saved", name);
- XBT_DEBUG("Wait for execution of action %p, state %d", action, (int)action->state);
+ XBT_DEBUG("restore VM(%s), where %d processes exist", name, xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
- /* Associate this simcall to the action */
- xbt_fifo_push(action->simcalls, simcall);
- simcall->issuer->waiting_action = action;
+ /* jump to vm_ws_restore() */
+ surf_vm_workstation_resume(ind_vm);
- /* set surf's action */
- if (MC_is_active()) {
- action->state = SIMIX_DONE;
- SIMIX_execution_finish(action);
- return;
+ 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", smx_process->name);
+ SIMIX_process_resume(smx_process, issuer);
}
-
- /* If the action is already finished then perform the error handling */
- if (action->state != SIMIX_RUNNING)
- SIMIX_execution_finish(action);
}
-void SIMIX_host_execution_suspend(smx_action_t action)
+void simcall_HANDLER_vm_restore(smx_simcall_t simcall, smx_host_t ind_vm)
{
- if(action->execution.surf_exec)
- surf_workstation_model->suspend(action->execution.surf_exec);
+ SIMIX_vm_restore(ind_vm, simcall->issuer);
}
-void SIMIX_host_execution_resume(smx_action_t action)
-{
- if(action->execution.surf_exec)
- surf_workstation_model->resume(action->execution.surf_exec);
-}
-void SIMIX_execution_finish(smx_action_t action)
+/**
+ * \brief Function to shutdown a SIMIX VM host. This function powers off the
+ * VM. All the processes on this VM will be killed. But, the state of the VM is
+ * preserved on memory. We can later start it again.
+ *
+ * \param host the vm host to shutdown (a smx_host_t)
+ */
+void SIMIX_vm_shutdown(smx_host_t ind_vm, smx_process_t issuer)
{
- xbt_fifo_item_t item;
- smx_simcall_t simcall;
-
- xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
-
- switch (action->state) {
-
- case SIMIX_DONE:
- /* do nothing, action done */
- XBT_DEBUG("SIMIX_execution_finished: execution successful");
- break;
+ const char *name = SIMIX_host_get_name(ind_vm);
- case SIMIX_FAILED:
- XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
- simcall->issuer->context->iwannadie = 1;
- //SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
- break;
+ if (SIMIX_vm_get_state(ind_vm) != SURF_VM_STATE_RUNNING)
+ THROWF(vm_error, 0, "VM(%s) is not running", name);
- case SIMIX_CANCELED:
- XBT_DEBUG("SIMIX_execution_finished: execution canceled");
- SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
- break;
+ XBT_DEBUG("shutdown %s", name);
+ XBT_DEBUG("%d processes in the VM", xbt_swag_size(SIMIX_host_priv(ind_vm)->process_list));
- default:
- xbt_die("Internal error in SIMIX_execution_finish: unexpected action state %d",
- (int)action->state);
- }
- /* check if the host is down */
- if (surf_workstation_model->extension.
- workstation.get_state(simcall->issuer->smx_host) != SURF_RESOURCE_ON) {
- simcall->issuer->context->iwannadie = 1;
- }
-
- simcall->issuer->waiting_action = NULL;
- simcall_host_execution_wait__set__result(simcall, action->state);
- SIMIX_simcall_answer(simcall);
+ 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", smx_process->name);
+ SIMIX_process_kill(smx_process, issuer);
}
- /* We no longer need it */
- SIMIX_host_execution_destroy(action);
+ /* FIXME: we may have to do something at the surf layer, e.g., vcpu action */
+ surf_resource_set_state(surf_workstation_resource_priv(ind_vm),
+ (int)SURF_VM_STATE_CREATED);
}
-void SIMIX_post_host_execute(smx_action_t action)
+void simcall_HANDLER_vm_shutdown(smx_simcall_t simcall, smx_host_t ind_vm)
{
- if (action->type == SIMIX_ACTION_EXECUTE && /* FIMXE: handle resource failure
- * for parallel tasks too */
- surf_workstation_model->extension.workstation.get_state(action->execution.host) == SURF_RESOURCE_OFF) {
- /* If the host running the action failed, notice it so that the asking
- * process can be killed if it runs on that host itself */
- action->state = SIMIX_FAILED;
- } else if (surf_workstation_model->action_state_get(action->execution.surf_exec) == SURF_ACTION_FAILED) {
- /* If the host running the action didn't fail, then the action was
- * canceled */
- action->state = SIMIX_CANCELED;
- } else {
- action->state = SIMIX_DONE;
- }
-
- if (action->execution.surf_exec) {
- surf_workstation_model->action_unref(action->execution.surf_exec);
- action->execution.surf_exec = NULL;
- }
-
- /* If there are simcalls associated with the action, then answer them */
- if (xbt_fifo_size(action->simcalls)) {
- SIMIX_execution_finish(action);
- }
+ SIMIX_vm_shutdown(ind_vm, simcall->issuer);
}
-#ifdef HAVE_TRACING
-void SIMIX_pre_set_category(smx_simcall_t simcall, smx_action_t action,
- const char *category){
- SIMIX_set_category(action, category);
-}
-void SIMIX_set_category(smx_action_t action, const char *category)
+/**
+ * \brief Function to destroy a SIMIX VM host.
+ *
+ * \param host the vm host to destroy (a smx_host_t)
+ */
+void SIMIX_vm_destroy(smx_host_t ind_vm)
{
- if (action->state != SIMIX_RUNNING) return;
- if (action->type == SIMIX_ACTION_EXECUTE){
- surf_workstation_model->set_category(action->execution.surf_exec, category);
- }else if (action->type == SIMIX_ACTION_COMMUNICATE){
- surf_workstation_model->set_category(action->comm.surf_comm, category);
- }
-}
-#endif
+ /* this code basically performs a similar thing like SIMIX_host_destroy() */
+
+ xbt_assert((ind_vm != NULL), "Invalid parameters");
+ const char *hostname = SIMIX_host_get_name(ind_vm);
+
+ XBT_DEBUG("destroy %s", hostname);
+ /* this will call the registered callback function, i.e., SIMIX_host_destroy(). */
+ 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_destroy(ind_vm);
+}
