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 <cmath> /*ceil*/
  10
  11 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_storage);
  12
  13 /*************
  14  * CallBacks *
  15  *************/
  16 extern std::map<std::string, simgrid::surf::StorageType*> storage_types;
  17
  18 static void check_disk_attachment()
  19 {
  20   for (auto const& s : *simgrid::surf::StorageImpl::storagesMap()) {
  21     simgrid::kernel::routing::NetPoint* host_elm = sg_netpoint_by_name_or_null(s.second->getHost().c_str());
  22     if (not host_elm)
  23       surf_parse_error(std::string("Unable to attach storage ") + s.second->getCname() + ": host " +
  24                        s.second->getHost() + " does not exist.");
  25     else
  26       s.second->piface_.attached_to_ = sg_host_by_name(s.second->getHost().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(std::string id, std::string type_id, std::string content_name,
  50                                             std::string attach)
  51 {
  52   StorageType* storage_type = storage_types.at(type_id);
  53
  54   double Bread = surf_parse_get_bandwidth(storage_type->model_properties->at("Bread").c_str(),
  55                                           "property Bread, storage", type_id.c_str());
  56   double Bwrite = surf_parse_get_bandwidth(storage_type->model_properties->at("Bwrite").c_str(),
  57                                            "property Bwrite, storage", type_id.c_str());
  58
  59   StorageImpl* storage =
  60       new StorageN11(this, id, maxminSystem_, Bread, Bwrite, type_id, content_name, storage_type->size, 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.c_str(), type_id.c_str(),
  64             Bread);
  65
  66   p_storageList.push_back(storage);
  67
  68   return storage;
  69 }
  70
  71 double StorageN11Model::nextOccuringEvent(double now)
  72 {
  73   return StorageModel::nextOccuringEventFull(now);
  74 }
  75
  76 void StorageN11Model::updateActionsState(double /*now*/, double delta)
  77 {
  78   for (auto it = std::begin(*getRunningActionSet()); it != std::end(*getRunningActionSet());) {
  79     StorageAction& action = static_cast<StorageAction&>(*it);
  80     ++it; // increment iterator here since the following calls to action.finish() may invalidate it
  81     double current_progress = lrint(lmm_variable_getvalue(action.getVariable()) * delta);
  82     action.updateRemains(current_progress);
  83     if (action.type_ == WRITE) {
  84       action.storage_->usedSize_ += current_progress;
  85     }
  86
  87     if (action.getMaxDuration() > NO_MAX_DURATION)
  88       action.updateMaxDuration(delta);
  89
  90     if (action.getRemainsNoUpdate() > 0 && lmm_get_variable_weight(action.getVariable()) > 0 &&
  91         action.storage_->usedSize_ == action.storage_->getSize()) {
  92       action.finish(Action::State::failed);
  93     } else if (((action.getRemainsNoUpdate() <= 0) && (lmm_get_variable_weight(action.getVariable()) > 0)) ||
  94                ((action.getMaxDuration() > NO_MAX_DURATION) && (action.getMaxDuration() <= 0))) {
  95       action.finish(Action::State::done);
  96     }
  97   }
  98 }
  99
 100 /************
 101  * Resource *
 102  ************/
 103
 104 StorageN11::StorageN11(StorageModel* model, std::string name, lmm_system_t maxminSystem, double bread, double bwrite,
 105                        std::string type_id, std::string content_name, sg_size_t size, std::string attach)
 106     : StorageImpl(model, name, maxminSystem, bread, bwrite, type_id, content_name, size, attach)
 107 {
 108   XBT_DEBUG("Create resource with Bread '%f' Bwrite '%f' and Size '%llu'", bread, bwrite, size);
 109   simgrid::s4u::Storage::onCreation(this->piface_);
 110 }
 111
 112 StorageAction* StorageN11::read(sg_size_t size)
 113 {
 114   return new StorageN11Action(model(), size, isOff(), this, READ);
 115 }
 116
 117 StorageAction* StorageN11::write(sg_size_t size)
 118 {
 119   return new StorageN11Action(model(), size, isOff(), this, WRITE);
 120 }
 121
 122 /**********
 123  * Action *
 124  **********/
 125
 126 StorageN11Action::StorageN11Action(Model* model, double cost, bool failed, StorageImpl* storage,
 127                                    e_surf_action_storage_type_t type)
 128     : StorageAction(model, cost, failed, lmm_variable_new(model->getMaxminSystem(), this, 1.0, -1.0, 3), storage, type)
 129 {
 130   XBT_IN("(%s,%g", storage->getCname(), cost);
 131
 132   // Must be less than the max bandwidth for all actions
 133   lmm_expand(model->getMaxminSystem(), storage->constraint(), getVariable(), 1.0);
 134   switch(type) {
 135   case READ:
 136     lmm_expand(model->getMaxminSystem(), storage->constraintRead_, getVariable(), 1.0);
 137     break;
 138   case WRITE:
 139     lmm_expand(model->getMaxminSystem(), storage->constraintWrite_, getVariable(), 1.0);
 140     break;
 141   default:
 142     THROW_UNIMPLEMENTED;
 143   }
 144   XBT_OUT();
 145 }
 146
 147 int StorageN11Action::unref()
 148 {
 149   refcount_--;
 150   if (not refcount_) {
 151     if (action_hook.is_linked())
 152       stateSet_->erase(stateSet_->iterator_to(*this));
 153     if (getVariable())
 154       lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
 155     xbt_free(getCategory());
 156     delete this;
 157     return 1;
 158   }
 159   return 0;
 160 }
 161
 162 void StorageN11Action::cancel()
 163 {
 164   setState(Action::State::failed);
 165 }
 166
 167 void StorageN11Action::suspend()
 168 {
 169   XBT_IN("(%p)", this);
 170   if (suspended_ != 2) {
 171     lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 0.0);
 172     suspended_ = 1;
 173   }
 174   XBT_OUT();
 175 }
 176
 177 void StorageN11Action::resume()
 178 {
 179   THROW_UNIMPLEMENTED;
 180 }
 181
 182 bool StorageN11Action::isSuspended()
 183 {
 184   return suspended_ == 1;
 185 }
 186
 187 void StorageN11Action::setMaxDuration(double /*duration*/)
 188 {
 189   THROW_UNIMPLEMENTED;
 190 }
 191
 192 void StorageN11Action::setSharingWeight(double /*priority*/)
 193 {
 194   THROW_UNIMPLEMENTED;
 195 }
 196
 197 }
 198 }