-
-/*********
- * Model *
- *********/
-
-namespace simgrid {
-namespace surf {
-
-Model::Model()
- : maxminSystem_(nullptr)
-{
- readyActionSet_ = new ActionList();
- runningActionSet_ = new ActionList();
- failedActionSet_ = new ActionList();
- doneActionSet_ = new ActionList();
-
- modifiedSet_ = nullptr;
- actionHeap_ = nullptr;
- updateMechanism_ = UM_UNDEFINED;
- selectiveUpdate_ = 0;
-}
-
-Model::~Model(){
- delete readyActionSet_;
- delete runningActionSet_;
- delete failedActionSet_;
- delete doneActionSet_;
-}
-
-double Model::next_occuring_event(double now)
-{
- //FIXME: set the good function once and for all
- if (updateMechanism_ == UM_LAZY)
- return next_occuring_event_lazy(now);
- else if (updateMechanism_ == UM_FULL)
- return next_occuring_event_full(now);
- else
- xbt_die("Invalid cpu update mechanism!");
-}
-
-double Model::next_occuring_event_lazy(double now)
-{
- Action *action = nullptr;
- double min = -1;
- double share;
-
- XBT_DEBUG
- ("Before share resources, the size of modified actions set is %zd",
- modifiedSet_->size());
-
- lmm_solve(maxminSystem_);
-
- XBT_DEBUG
- ("After share resources, The size of modified actions set is %zd",
- modifiedSet_->size());
-
- while(!modifiedSet_->empty()) {
- action = &(modifiedSet_->front());
- modifiedSet_->pop_front();
- int max_dur_flag = 0;
-
- if (action->getStateSet() != runningActionSet_)
- continue;
-
- /* bogus priority, skip it */
- if (action->getPriority() <= 0 || action->getHat()==LATENCY)
- continue;
-
- action->updateRemainingLazy(now);
-
- min = -1;
- share = lmm_variable_getvalue(action->getVariable());
-
- if (share > 0) {
- double time_to_completion;
- if (action->getRemains() > 0) {
- time_to_completion = action->getRemainsNoUpdate() / share;
- } else {
- time_to_completion = 0.0;
- }
- min = now + time_to_completion; // when the task will complete if nothing changes
- }
-
- if ((action->getMaxDuration() != NO_MAX_DURATION)
- && (min == -1
- || action->getStartTime() +
- action->getMaxDuration() < min)) {
- min = action->getStartTime() +
- action->getMaxDuration(); // when the task will complete anyway because of the deadline if any
- max_dur_flag = 1;
- }
-
-
- XBT_DEBUG("Action(%p) corresponds to variable %d", action, action->getVariable()->id_int);
-
- XBT_DEBUG("Action(%p) Start %f. May finish at %f (got a share of %f). Max_duration %f", action,
- action->getStartTime(), min, share,
- action->getMaxDuration());
-
- if (min != -1) {
- action->heapUpdate(actionHeap_, min, max_dur_flag ? MAX_DURATION : NORMAL);
- XBT_DEBUG("Insert at heap action(%p) min %f now %f", action, min,
- now);
- } else DIE_IMPOSSIBLE;
- }
-
- //hereafter must have already the min value for this resource model
- if (xbt_heap_size(actionHeap_) > 0)
- min = xbt_heap_maxkey(actionHeap_) - now;
- else
- min = -1;
-
- XBT_DEBUG("The minimum with the HEAP %f", min);
-
- return min;
-}
-
-double Model::next_occuring_event_full(double /*now*/) {
- THROW_UNIMPLEMENTED;
- return 0.0;
-}
-
-double Model::shareResourcesMaxMin(ActionList *running_actions,
- lmm_system_t sys,
- void (*solve) (lmm_system_t))
-{
- Action *action = nullptr;
- double min = -1;
- double value = -1;
-
- solve(sys);
-
- ActionList::iterator it(running_actions->begin()), itend(running_actions->end());
- for(; it != itend ; ++it) {
- action = &*it;
- value = lmm_variable_getvalue(action->getVariable());
- if ((value > 0) || (action->getMaxDuration() >= 0))
- break;
- }
-
- if (!action)
- return -1.0;
-
- if (value > 0) {
- if (action->getRemains() > 0)
- min = action->getRemainsNoUpdate() / value;
- else
- min = 0.0;
- if ((action->getMaxDuration() >= 0) && (action->getMaxDuration() < min))
- min = action->getMaxDuration();
- } else
- min = action->getMaxDuration();
-
-
- for (++it; it != itend; ++it) {
- action = &*it;
- value = lmm_variable_getvalue(action->getVariable());
- if (value > 0) {
- if (action->getRemains() > 0)
- value = action->getRemainsNoUpdate() / value;
- else
- value = 0.0;
- if (value < min) {
- min = value;
- XBT_DEBUG("Updating min (value) with %p: %f", action, min);
- }
- }
- if ((action->getMaxDuration() >= 0) && (action->getMaxDuration() < min)) {
- min = action->getMaxDuration();
- XBT_DEBUG("Updating min (duration) with %p: %f", action, min);
- }
- }
- XBT_DEBUG("min value : %f", min);
-
- return min;
-}
-
-void Model::updateActionsState(double now, double delta)
-{
- if (updateMechanism_ == UM_FULL)
- updateActionsStateFull(now, delta);
- else if (updateMechanism_ == UM_LAZY)
- updateActionsStateLazy(now, delta);
- else
- xbt_die("Invalid cpu update mechanism!");
-}
-
-void Model::updateActionsStateLazy(double /*now*/, double /*delta*/)
-{
- THROW_UNIMPLEMENTED;
-}
-
-void Model::updateActionsStateFull(double /*now*/, double /*delta*/)
-{
- THROW_UNIMPLEMENTED;
-}
-
-}
-}
-
-/************
- * Resource *
- ************/
-
-namespace simgrid {
-namespace surf {
-
-Resource::Resource(Model *model, const char *name)
- : name_(xbt_strdup(name))
- , model_(model)
-{}
-
-Resource::Resource(Model *model, const char *name, lmm_constraint_t constraint)
- : name_(xbt_strdup(name))
- , model_(model)
- , constraint_(constraint)
-{}
-
-Resource::~Resource() {
- xbt_free((void*)name_);
-}
-
-bool Resource::isOn() const {
- return isOn_;
-}
-bool Resource::isOff() const {
- return ! isOn_;
-}
-
-void Resource::turnOn()
-{
- isOn_ = true;
-}
-
-void Resource::turnOff()
-{
- isOn_ = false;
-}
-
-Model *Resource::getModel() const {
- return model_;
-}
-
-const char *Resource::getName() const {
- return name_;
-}
-
-bool Resource::operator==(const Resource &other) const {
- return strcmp(name_, other.name_);
-}
-
-lmm_constraint_t Resource::getConstraint() const {
- return constraint_;
-}
-
-}
-}
-
-/**********
- * Action *
- **********/
-
-const char *surf_action_state_names[6] = {
- "SURF_ACTION_READY",
- "SURF_ACTION_RUNNING",
- "SURF_ACTION_FAILED",
- "SURF_ACTION_DONE",
- "SURF_ACTION_TO_FREE",
- "SURF_ACTION_NOT_IN_THE_SYSTEM"
-};
-
-/* added to manage the communication action's heap */
-void surf_action_lmm_update_index_heap(void *action, int i) {
- static_cast<simgrid::surf::Action*>(action)->updateIndexHeap(i);
-}
-
-namespace simgrid {
-namespace surf {
-
-void Action::initialize(simgrid::surf::Model *model, double cost, bool failed,
- lmm_variable_t var)
-{
- remains_ = cost;
- start_ = surf_get_clock();
- cost_ = cost;
- model_ = model;
- variable_ = var;
- if (failed)
- stateSet_ = getModel()->getFailedActionSet();
- else
- stateSet_ = getModel()->getRunningActionSet();
-
- stateSet_->push_back(*this);
-}
-
-Action::Action(simgrid::surf::Model *model, double cost, bool failed)
-{
- initialize(model, cost, failed);
-}
-
-Action::Action(simgrid::surf::Model *model, double cost, bool failed, lmm_variable_t var)
-{
- initialize(model, cost, failed, var);
-}
-
-Action::~Action() {
- xbt_free(category_);
-}
-
-void Action::finish() {
- finishTime_ = surf_get_clock();
-}
-
-Action::State Action::getState()
-{
- if (stateSet_ == getModel()->getReadyActionSet())
- return Action::State::ready;
- if (stateSet_ == getModel()->getRunningActionSet())
- return Action::State::running;
- if (stateSet_ == getModel()->getFailedActionSet())
- return Action::State::failed;
- if (stateSet_ == getModel()->getDoneActionSet())
- return Action::State::done;
- return Action::State::not_in_the_system;
-}
-
-void Action::setState(Action::State state)
-{
- stateSet_->erase(stateSet_->iterator_to(*this));
- switch (state) {
- case Action::State::ready:
- stateSet_ = getModel()->getReadyActionSet();
- break;
- case Action::State::running:
- stateSet_ = getModel()->getRunningActionSet();
- break;
- case Action::State::failed:
- stateSet_ = getModel()->getFailedActionSet();
- break;
- case Action::State::done:
- stateSet_ = getModel()->getDoneActionSet();
- break;
- default:
- stateSet_ = nullptr;
- break;
- }
- if (stateSet_)
- stateSet_->push_back(*this);
-}
-
-double Action::getBound()
-{
- return (variable_) ? lmm_variable_getbound(variable_) : 0;
-}
-
-void Action::setBound(double bound)
-{
- XBT_IN("(%p,%g)", this, bound);
- if (variable_)
- lmm_update_variable_bound(getModel()->getMaxminSystem(), variable_, bound);
-
- if (getModel()->getUpdateMechanism() == UM_LAZY && getLastUpdate()!=surf_get_clock())
- heapRemove(getModel()->getActionHeap());
- XBT_OUT();
-}
-
-double Action::getStartTime()
-{
- return start_;
-}
-
-double Action::getFinishTime()
-{
- /* keep the function behavior, some models (cpu_ti) change the finish time before the action end */
- return remains_ == 0 ? finishTime_ : -1;
-}
-
-void Action::setData(void* data)
-{
- data_ = data;
-}
-
-void Action::setCategory(const char *category)
-{
- XBT_IN("(%p,%s)", this, category);
- category_ = xbt_strdup(category);
- XBT_OUT();
-}
-
-void Action::ref(){
- refcount_++;
-}
-
-void Action::setMaxDuration(double duration)
-{
- XBT_IN("(%p,%g)", this, duration);
- maxDuration_ = duration;
- if (getModel()->getUpdateMechanism() == UM_LAZY) // remove action from the heap
- heapRemove(getModel()->getActionHeap());
- XBT_OUT();
-}
-
-void Action::gapRemove() {}
-
-void Action::setPriority(double priority)
-{
- XBT_IN("(%p,%g)", this, priority);
- priority_ = priority;
- lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), priority);
-
- if (getModel()->getUpdateMechanism() == UM_LAZY)
- heapRemove(getModel()->getActionHeap());
- XBT_OUT();
-}
-
-void Action::cancel(){
- setState(Action::State::failed);
- if (getModel()->getUpdateMechanism() == UM_LAZY) {
- if (action_lmm_hook.is_linked())
- getModel()->getModifiedSet()->erase(getModel()->getModifiedSet()->iterator_to(*this));
- heapRemove(getModel()->getActionHeap());
- }
-}
-
-int Action::unref(){
- refcount_--;
- if (!refcount_) {
- if (action_hook.is_linked())
- stateSet_->erase(stateSet_->iterator_to(*this));
- if (getVariable())
- lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
- if (getModel()->getUpdateMechanism() == UM_LAZY) {
- /* remove from heap */
- heapRemove(getModel()->getActionHeap());
- if (action_lmm_hook.is_linked())
- getModel()->getModifiedSet()->erase(getModel()->getModifiedSet()->iterator_to(*this));
- }
- delete this;
- return 1;
- }
- return 0;
-}
-
-void Action::suspend()
-{
- XBT_IN("(%p)", this);
- if (suspended_ != 2) {
- lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 0.0);
- suspended_ = 1;
- if (getModel()->getUpdateMechanism() == UM_LAZY)
- heapRemove(getModel()->getActionHeap());
- }
- XBT_OUT();
-}
-
-void Action::resume()
-{
- XBT_IN("(%p)", this);
- if (suspended_ != 2) {
- lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), priority_);
- suspended_ = 0;
- if (getModel()->getUpdateMechanism() == UM_LAZY)
- heapRemove(getModel()->getActionHeap());
- }
- XBT_OUT();
-}
-
-bool Action::isSuspended()
-{
- return suspended_ == 1;
-}
-/* insert action on heap using a given key and a hat (heap_action_type)
- * a hat can be of three types for communications:
- *
- * NORMAL = this is a normal heap entry stating the date to finish transmitting
- * LATENCY = this is a heap entry to warn us when the latency is payed
- * MAX_DURATION =this is a heap entry to warn us when the max_duration limit is reached
- */
-void Action::heapInsert(xbt_heap_t heap, double key, enum heap_action_type hat)
-{
- hat_ = hat;
- xbt_heap_push(heap, this, key);
-}
-
-void Action::heapRemove(xbt_heap_t heap)
-{
- hat_ = NOTSET;
- if (indexHeap_ >= 0) {
- xbt_heap_remove(heap, indexHeap_);
- }
-}
-
-void Action::heapUpdate(xbt_heap_t heap, double key, enum heap_action_type hat)
-{
- hat_ = hat;
- if (indexHeap_ >= 0) {
- xbt_heap_update(heap, indexHeap_, key);
- }else{
- xbt_heap_push(heap, this, key);
- }
-}
-
-void Action::updateIndexHeap(int i) {
- indexHeap_ = i;
-}
-
-double Action::getRemains()
-{
- XBT_IN("(%p)", this);
- /* update remains before return it */
- if (getModel()->getUpdateMechanism() == UM_LAZY) /* update remains before return it */
- updateRemainingLazy(surf_get_clock());
- XBT_OUT();
- return remains_;
-}
-
-double Action::getRemainsNoUpdate()
-{
- return remains_;
-}
-
-//FIXME split code in the right places
-void Action::updateRemainingLazy(double now)
-{
- double delta = 0.0;
-
- if(getModel() == surf_network_model)
- {
- if (suspended_ != 0)
- return;
- }
- else
- {
- xbt_assert(stateSet_ == getModel()->getRunningActionSet(), "You're updating an action that is not running.");
- xbt_assert(priority_ > 0, "You're updating an action that seems suspended.");
- }
-
- delta = now - lastUpdate_;
-
- if (remains_ > 0) {
- XBT_DEBUG("Updating action(%p): remains was %f, last_update was: %f", this, remains_, lastUpdate_);
- double_update(&remains_, lastValue_ * delta, sg_surf_precision*sg_maxmin_precision);
-
- if (getModel() == surf_cpu_model_pm && TRACE_is_enabled()) {
- simgrid::surf::Resource *cpu = static_cast<simgrid::surf::Resource*>(
- lmm_constraint_id(lmm_get_cnst_from_var(getModel()->getMaxminSystem(), getVariable(), 0)));
- TRACE_surf_host_set_utilization(cpu->getName(), getCategory(), lastValue_, lastUpdate_, now - lastUpdate_);
- }
- XBT_DEBUG("Updating action(%p): remains is now %f", this, remains_);
- }
-
- if(getModel() == surf_network_model)
- {
- if (maxDuration_ != NO_MAX_DURATION)
- double_update(&maxDuration_, delta, sg_surf_precision);
-
- //FIXME: duplicated code
- if ((remains_ <= 0) &&
- (lmm_get_variable_weight(getVariable()) > 0)) {
- finish();
- setState(Action::State::done);
- heapRemove(getModel()->getActionHeap());
- } else if (((maxDuration_ != NO_MAX_DURATION)
- && (maxDuration_ <= 0))) {
- finish();
- setState(Action::State::done);
- heapRemove(getModel()->getActionHeap());
- }
- }
-
- lastUpdate_ = now;
- lastValue_ = lmm_variable_getvalue(getVariable());
-}
-
-}
-}