src/surf/storage_n11.cpp

   1 /* Copyright (c) 2013-2018. 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/kernel/routing/NetPoint.hpp"
   8 #include "simgrid/s4u/Engine.hpp"
   9 #include "simgrid/s4u/Host.hpp"
  10 #include "src/surf/xml/platf.hpp"
  11 #include "src/kernel/lmm/maxmin.hpp"
  12 #include "xbt/utility.hpp"
  13 #include <cmath> /*ceil*/
  14
  15 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_storage);
  16
  17 /*************
  18  * CallBacks *
  19  *************/
  20 extern std::map<std::string, simgrid::surf::StorageType*> storage_types;
  21
  22 static void check_disk_attachment()
  23 {
  24   for (auto const& s : simgrid::s4u::Engine::getInstance()->getAllStorages()) {
  25     simgrid::kernel::routing::NetPoint* host_elm = sg_netpoint_by_name_or_null(s->getImpl()->getHost().c_str());
  26     if (not host_elm)
  27       surf_parse_error(std::string("Unable to attach storage ") + s->getCname() + ": host " +
  28                        s->getImpl()->getHost().c_str() + " does not exist.");
  29     else
  30       s->attached_to_ = sg_host_by_name(s->getImpl()->getHost().c_str());
  31   }
  32 }
  33
  34 void storage_register_callbacks()
  35 {
  36   simgrid::s4u::onPlatformCreated.connect(check_disk_attachment);
  37   instr_routing_define_callbacks();
  38 }
  39
  40 /*********
  41  * Model *
  42  *********/
  43
  44 void surf_storage_model_init_default()
  45 {
  46   surf_storage_model = new simgrid::surf::StorageN11Model();
  47   all_existing_models->push_back(surf_storage_model);
  48 }
  49
  50 namespace simgrid {
  51 namespace surf {
  52
  53 StorageImpl* StorageN11Model::createStorage(std::string id, std::string type_id, std::string content_name,
  54                                             std::string attach)
  55 {
  56   StorageType* storage_type = storage_types.at(type_id);
  57
  58   double Bread = surf_parse_get_bandwidth(storage_type->model_properties->at("Bread").c_str(),
  59                                           "property Bread, storage", type_id.c_str());
  60   double Bwrite = surf_parse_get_bandwidth(storage_type->model_properties->at("Bwrite").c_str(),
  61                                            "property Bwrite, storage", type_id.c_str());
  62
  63   StorageImpl* storage =
  64       new StorageN11(this, id, maxminSystem_, Bread, Bwrite, type_id, content_name, storage_type->size, attach);
  65   storageCreatedCallbacks(storage);
  66
  67   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(),
  68             Bread);
  69
  70   return storage;
  71 }
  72
  73 double StorageN11Model::nextOccuringEvent(double now)
  74 {
  75   return StorageModel::nextOccuringEventFull(now);
  76 }
  77
  78 void StorageN11Model::updateActionsState(double /*now*/, double delta)
  79 {
  80   for (auto it = std::begin(*getRunningActionSet()); it != std::end(*getRunningActionSet());) {
  81     StorageAction& action = static_cast<StorageAction&>(*it);
  82     ++it; // increment iterator here since the following calls to action.finish() may invalidate it
  83     action.updateRemains(lrint(action.getVariable()->get_value() * delta));
  84
  85     if (action.getMaxDuration() > NO_MAX_DURATION)
  86       action.updateMaxDuration(delta);
  87
  88     if (((action.getRemainsNoUpdate() <= 0) && (action.getVariable()->get_weight() > 0)) ||
  89         ((action.getMaxDuration() > NO_MAX_DURATION) && (action.getMaxDuration() <= 0))) {
  90       action.finish(kernel::resource::Action::State::done);
  91     }
  92   }
  93 }
  94
  95 /************
  96  * Resource *
  97  ************/
  98
  99 StorageN11::StorageN11(StorageModel* model, std::string name, lmm_system_t maxminSystem, double bread, double bwrite,
 100                        std::string type_id, std::string content_name, sg_size_t size, std::string attach)
 101     : StorageImpl(model, name, maxminSystem, bread, bwrite, type_id, content_name, size, attach)
 102 {
 103   XBT_DEBUG("Create resource with Bread '%f' Bwrite '%f' and Size '%llu'", bread, bwrite, size);
 104   simgrid::s4u::Storage::onCreation(this->piface_);
 105 }
 106
 107 StorageAction* StorageN11::read(sg_size_t size)
 108 {
 109   return new StorageN11Action(model(), size, isOff(), this, READ);
 110 }
 111
 112 StorageAction* StorageN11::write(sg_size_t size)
 113 {
 114   return new StorageN11Action(model(), size, isOff(), this, WRITE);
 115 }
 116
 117 /**********
 118  * Action *
 119  **********/
 120
 121 StorageN11Action::StorageN11Action(kernel::resource::Model* model, double cost, bool failed, StorageImpl* storage,
 122                                    e_surf_action_storage_type_t type)
 123     : StorageAction(model, cost, failed, model->getMaxminSystem()->variable_new(this, 1.0, -1.0, 3), storage, type)
 124 {
 125   XBT_IN("(%s,%g", storage->getCname(), cost);
 126
 127   // Must be less than the max bandwidth for all actions
 128   model->getMaxminSystem()->expand(storage->constraint(), getVariable(), 1.0);
 129   switch(type) {
 130   case READ:
 131     model->getMaxminSystem()->expand(storage->constraintRead_, getVariable(), 1.0);
 132     break;
 133   case WRITE:
 134     model->getMaxminSystem()->expand(storage->constraintWrite_, getVariable(), 1.0);
 135     break;
 136   default:
 137     THROW_UNIMPLEMENTED;
 138   }
 139   XBT_OUT();
 140 }
 141
 142 int StorageN11Action::unref()
 143 {
 144   refcount_--;
 145   if (not refcount_) {
 146     if (stateSetHook_.is_linked())
 147       simgrid::xbt::intrusive_erase(*stateSet_, *this);
 148     if (getVariable())
 149       getModel()->getMaxminSystem()->variable_free(getVariable());
 150     xbt_free(getCategory());
 151     delete this;
 152     return 1;
 153   }
 154   return 0;
 155 }
 156
 157 void StorageN11Action::cancel()
 158 {
 159   setState(Action::State::failed);
 160 }
 161
 162 void StorageN11Action::suspend()
 163 {
 164   XBT_IN("(%p)", this);
 165   if (suspended_ != Action::SuspendStates::sleeping) {
 166     getModel()->getMaxminSystem()->update_variable_weight(getVariable(), 0.0);
 167     suspended_ = Action::SuspendStates::suspended;
 168   }
 169   XBT_OUT();
 170 }
 171
 172 void StorageN11Action::resume()
 173 {
 174   THROW_UNIMPLEMENTED;
 175 }
 176
 177 bool StorageN11Action::isSuspended()
 178 {
 179   return suspended_ == Action::SuspendStates::suspended;
 180 }
 181
 182 void StorageN11Action::setMaxDuration(double /*duration*/)
 183 {
 184   THROW_UNIMPLEMENTED;
 185 }
 186
 187 void StorageN11Action::setSharingWeight(double /*priority*/)
 188 {
 189   THROW_UNIMPLEMENTED;
 190 }
 191
 192 }
 193 }