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