src/surf/storage_n11.cpp

   1 /* Copyright (c) 2013-2017. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include "storage_n11.hpp"
   7 #include "simgrid/s4u/Engine.hpp"
   8 #include "src/kernel/routing/NetPoint.hpp"
   9 #include <math.h> /*ceil*/
  10
  11 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_storage);
  12
  13 /*************
  14  * CallBacks *
  15  *************/
  16 extern std::map<std::string, storage_type_t> storage_types;
  17
  18 static void check_disk_attachment()
  19 {
  20   for (auto s : *simgrid::surf::StorageImpl::storagesMap()) {
  21     simgrid::kernel::routing::NetPoint* host_elm = sg_netpoint_by_name_or_null(s.second->attach_.c_str());
  22     if (not host_elm)
  23       surf_parse_error("Unable to attach storage %s: host %s does not exist.", s.second->cname(),
  24                        s.second->attach_.c_str());
  25     else
  26       s.second->piface_.attached_to_ = sg_host_by_name(s.second->attach_.c_str());
  27   }
  28 }
  29
  30 void storage_register_callbacks()
  31 {
  32   simgrid::s4u::onPlatformCreated.connect(check_disk_attachment);
  33   instr_routing_define_callbacks();
  34 }
  35
  36 /*********
  37  * Model *
  38  *********/
  39
  40 void surf_storage_model_init_default()
  41 {
  42   surf_storage_model = new simgrid::surf::StorageN11Model();
  43   all_existing_models->push_back(surf_storage_model);
  44 }
  45
  46 namespace simgrid {
  47 namespace surf {
  48
  49 StorageImpl* StorageN11Model::createStorage(const char* id, const char* type_id, const char* content_name,
  50                                             const char* attach)
  51 {
  52   storage_type_t storage_type = storage_types.at(type_id);
  53
  54   double Bread =
  55       surf_parse_get_bandwidth(storage_type->model_properties->at("Bread").c_str(), "property Bread, storage", type_id);
  56   double Bwrite = surf_parse_get_bandwidth(storage_type->model_properties->at("Bwrite").c_str(),
  57                                            "property Bwrite, storage", type_id);
  58
  59   StorageImpl* storage = new StorageN11(this, id, maxminSystem_, Bread, Bwrite, type_id, (char*)content_name,
  60                                         storage_type->size, (char*)attach);
  61   storageCreatedCallbacks(storage);
  62
  63   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s'\n\t\tBread '%f'\n", id, type_id, Bread);
  64
  65   p_storageList.push_back(storage);
  66
  67   return storage;
  68 }
  69
  70 double StorageN11Model::nextOccuringEvent(double now)
  71 {
  72   return StorageModel::nextOccuringEventFull(now);
  73 }
  74
  75 void StorageN11Model::updateActionsState(double /*now*/, double delta)
  76 {
  77
  78   ActionList *actionSet = getRunningActionSet();
  79   for(ActionList::iterator it(actionSet->begin()), itNext=it, itend(actionSet->end())
  80       ; it != itend ; it=itNext) {
  81     ++itNext;
  82
  83     StorageAction *action = static_cast<StorageAction*>(&*it);
  84
  85     if (action->type_ == WRITE) {
  86       // Update the disk usage
  87       // Update the file size
  88       // For each action of type write
  89       double current_progress = delta * lmm_variable_getvalue(action->getVariable());
  90       long int incr = current_progress;
  91
  92       XBT_DEBUG("%s:\n\t progress =  %.2f, current_progress = %.2f, incr = %ld, lrint(1) = %ld, lrint(2) = %ld",
  93                 action->file_->cname(), action->progress_, current_progress, incr,
  94                 lrint(action->progress_ + current_progress), lrint(action->progress_) + incr);
  95
  96       /* take care of rounding error accumulation */
  97       if (lrint(action->progress_ + current_progress) > lrint(action->progress_) + incr)
  98         incr++;
  99
 100       action->progress_ += current_progress;
 101
 102       action->storage_->usedSize_ += incr;     // disk usage
 103       action->file_->incrPosition(incr);       // current_position
 104       //  which becomes the new file size
 105       action->file_->setSize(action->file_->tell());
 106
 107       action->storage_->content_->erase(action->file_->cname());
 108       action->storage_->content_->insert({action->file_->cname(), action->file_->size()});
 109     }
 110
 111     action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
 112
 113     if (action->getMaxDuration() > NO_MAX_DURATION)
 114       action->updateMaxDuration(delta);
 115
 116     if (action->getRemainsNoUpdate() > 0 && lmm_get_variable_weight(action->getVariable()) > 0 &&
 117         action->storage_->usedSize_ == action->storage_->size_) {
 118       action->finish();
 119       action->setState(Action::State::failed);
 120     } else if (((action->getRemainsNoUpdate() <= 0) && (lmm_get_variable_weight(action->getVariable()) > 0)) ||
 121                ((action->getMaxDuration() > NO_MAX_DURATION) && (action->getMaxDuration() <= 0))) {
 122       action->finish();
 123       action->setState(Action::State::done);
 124     }
 125   }
 126 }
 127
 128 /************
 129  * Resource *
 130  ************/
 131
 132 StorageN11::StorageN11(StorageModel* model, const char* name, lmm_system_t maxminSystem, double bread, double bwrite,
 133                        const char* type_id, char* content_name, sg_size_t size, char* attach)
 134     : StorageImpl(model, name, maxminSystem, bread, bwrite, type_id, content_name, size, attach)
 135 {
 136   XBT_DEBUG("Create resource with Bread '%f' Bwrite '%f' and Size '%llu'", bread, bwrite, size);
 137   simgrid::s4u::Storage::onCreation(this->piface_);
 138 }
 139
 140 StorageAction* StorageN11::read(sg_size_t size)
 141 {
 142   return new StorageN11Action(model(), size, isOff(), this, READ);
 143 }
 144
 145 StorageAction* StorageN11::write(sg_size_t size)
 146 {
 147   return new StorageN11Action(model(), size, isOff(), this, WRITE);
 148 }
 149
 150 /**********
 151  * Action *
 152  **********/
 153
 154 StorageN11Action::StorageN11Action(Model* model, double cost, bool failed, StorageImpl* storage,
 155                                    e_surf_action_storage_type_t type)
 156     : StorageAction(model, cost, failed, lmm_variable_new(model->getMaxminSystem(), this, 1.0, -1.0, 3), storage, type)
 157 {
 158   XBT_IN("(%s,%g", storage->cname(), cost);
 159
 160   // Must be less than the max bandwidth for all actions
 161   lmm_expand(model->getMaxminSystem(), storage->constraint(), getVariable(), 1.0);
 162   switch(type) {
 163   case READ:
 164     lmm_expand(model->getMaxminSystem(), storage->constraintRead_, getVariable(), 1.0);
 165     break;
 166   case WRITE:
 167     lmm_expand(model->getMaxminSystem(), storage->constraintWrite_, getVariable(), 1.0);
 168     break;
 169   default:
 170     THROW_UNIMPLEMENTED;
 171   }
 172   XBT_OUT();
 173 }
 174
 175 int StorageN11Action::unref()
 176 {
 177   refcount_--;
 178   if (not refcount_) {
 179     if (action_hook.is_linked())
 180       stateSet_->erase(stateSet_->iterator_to(*this));
 181     if (getVariable())
 182       lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
 183     xbt_free(getCategory());
 184     delete this;
 185     return 1;
 186   }
 187   return 0;
 188 }
 189
 190 void StorageN11Action::cancel()
 191 {
 192   setState(Action::State::failed);
 193 }
 194
 195 void StorageN11Action::suspend()
 196 {
 197   XBT_IN("(%p)", this);
 198   if (suspended_ != 2) {
 199     lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 0.0);
 200     suspended_ = 1;
 201   }
 202   XBT_OUT();
 203 }
 204
 205 void StorageN11Action::resume()
 206 {
 207   THROW_UNIMPLEMENTED;
 208 }
 209
 210 bool StorageN11Action::isSuspended()
 211 {
 212   return suspended_ == 1;
 213 }
 214
 215 void StorageN11Action::setMaxDuration(double /*duration*/)
 216 {
 217   THROW_UNIMPLEMENTED;
 218 }
 219
 220 void StorageN11Action::setSharingWeight(double /*priority*/)
 221 {
 222   THROW_UNIMPLEMENTED;
 223 }
 224
 225 }
 226 }