-
-/*********
- * 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::nextOccuringEvent(double now)
-{
- //FIXME: set the good function once and for all
- if (updateMechanism_ == UM_LAZY)
- return nextOccuringEventLazy(now);
- else if (updateMechanism_ == UM_FULL)
- return nextOccuringEventFull(now);
- else
- xbt_die("Invalid cpu update mechanism!");
-}
-
-double Model::nextOccuringEventLazy(double now)
-{
- XBT_DEBUG("Before share resources, the size of modified actions set is %zu", modifiedSet_->size());
- lmm_solve(maxminSystem_);
- XBT_DEBUG("After share resources, The size of modified actions set is %zu", modifiedSet_->size());
-
- while (not modifiedSet_->empty()) {
- Action *action = &(modifiedSet_->front());
- modifiedSet_->pop_front();
- bool max_dur_flag = false;
-
- if (action->getStateSet() != runningActionSet_)
- continue;
-
- /* bogus priority, skip it */
- if (action->getPriority() <= 0 || action->getHat()==LATENCY)
- continue;
-
- action->updateRemainingLazy(now);
-
- double min = -1;
- double 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)) {
- // when the task will complete anyway because of the deadline if any
- min = action->getStartTime() + action->getMaxDuration();
- max_dur_flag = true;
- }
-
- 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) {
- double min = xbt_heap_maxkey(actionHeap_) - now;
- XBT_DEBUG("minimum with the HEAP %f", min);
- return min;
- } else {
- XBT_DEBUG("The HEAP is empty, thus returning -1");
- return -1;
- }
-}
-
-double Model::nextOccuringEventFull(double /*now*/) {
- maxminSystem_->solve_fun(maxminSystem_);
-
- double min = -1;
- for (auto it(getRunningActionSet()->begin()), itend(getRunningActionSet()->end()); it != itend ; ++it) {
- Action *action = &*it;
- double value = lmm_variable_getvalue(action->getVariable());
- if (value > 0) {
- if (action->getRemains() > 0)
- value = action->getRemainsNoUpdate() / value;
- else
- value = 0.0;
- if (min < 0 || value < min) {
- min = value;
- XBT_DEBUG("Updating min (value) with %p: %f", action, min);
- }
- }
- if ((action->getMaxDuration() >= 0) && (min<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, lmm_constraint_t constraint)
- : name_(name), model_(model), constraint_(constraint)
-{}
-
-Resource::~Resource() = default;
-
-bool Resource::isOn() const {
- return isOn_;
-}
-bool Resource::isOff() const {
- return not isOn_;
-}
-
-void Resource::turnOn()
-{
- isOn_ = true;
-}
-
-void Resource::turnOff()
-{
- isOn_ = false;
-}
-
-Model* Resource::model() const
-{
- return model_;
-}
-
-const char* Resource::cname() const
-{
- return name_.c_str();
-}
-
-bool Resource::operator==(const Resource &other) const {
- return name_ == other.name_;
-}
-
-lmm_constraint_t Resource::constraint() 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 {
-
-Action::Action(simgrid::surf::Model* model, double cost, bool failed) : Action(model, cost, failed, nullptr)
-{
-}
-
-Action::Action(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() {
- xbt_free(category_);
-}
-
-void Action::finish() {
- finishTime_ = surf_get_clock();
-}
-
-Action::State Action::getState()
-{
- if (stateSet_ == model_->getReadyActionSet())
- return Action::State::ready;
- if (stateSet_ == model_->getRunningActionSet())
- return Action::State::running;
- if (stateSet_ == model_->getFailedActionSet())
- return Action::State::failed;
- if (stateSet_ == model_->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_ = model_->getReadyActionSet();
- break;
- case Action::State::running:
- stateSet_ = model_->getRunningActionSet();
- break;
- case Action::State::failed:
- stateSet_ = model_->getFailedActionSet();
- break;
- case Action::State::done:
- stateSet_ = model_->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)
-{
- category_ = xbt_strdup(category);
-}
-
-void Action::ref(){
- refcount_++;
-}
-
-void Action::setMaxDuration(double duration)
-{
- maxDuration_ = duration;
- if (getModel()->getUpdateMechanism() == UM_LAZY) // remove action from the heap
- heapRemove(getModel()->getActionHeap());
-}
-
-void Action::setSharingWeight(double weight)
-{
- XBT_IN("(%p,%g)", this, weight);
- sharingWeight_ = weight;
- lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), weight);
-
- 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 (not 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);
- if (getModel()->getUpdateMechanism() == UM_LAZY){
- heapRemove(getModel()->getActionHeap());
- if (getModel()->getUpdateMechanism() == UM_LAZY && stateSet_ == getModel()->getRunningActionSet() &&
- sharingWeight_ > 0) {
- //If we have a lazy model, we need to update the remaining value accordingly
- updateRemainingLazy(surf_get_clock());
- }
- }
- suspended_ = 1;
- }
- XBT_OUT();
-}
-
-void Action::resume()
-{
- XBT_IN("(%p)", this);
- if (suspended_ != 2) {
- lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), sharingWeight_);
- 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(sharingWeight_ > 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->cname(), 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)) ||
- ((maxDuration_ > NO_MAX_DURATION) && (maxDuration_ <= 0))) {
- finish();
- setState(Action::State::done);
- heapRemove(getModel()->getActionHeap());
- }
- }
-
- lastUpdate_ = now;
- lastValue_ = lmm_variable_getvalue(getVariable());
-}
-
-}
-}