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 void check_disk_attachment()
  21 {
  22   for (auto const& s : simgrid::s4u::Engine::get_instance()->get_all_storages()) {
  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 /*********
  33  * Model *
  34  *********/
  35
  36 void surf_storage_model_init_default()
  37 {
  38   surf_storage_model = new simgrid::surf::StorageN11Model();
  39   all_existing_models->push_back(surf_storage_model);
  40 }
  41
  42 namespace simgrid {
  43 namespace surf {
  44
  45 StorageImpl* StorageN11Model::createStorage(std::string id, std::string type_id, std::string content_name,
  46                                             std::string attach)
  47 {
  48   StorageType* storage_type = storage_types.at(type_id);
  49
  50   double Bread = surf_parse_get_bandwidth(storage_type->model_properties->at("Bread").c_str(),
  51                                           "property Bread, storage", type_id.c_str());
  52   double Bwrite = surf_parse_get_bandwidth(storage_type->model_properties->at("Bwrite").c_str(),
  53                                            "property Bwrite, storage", type_id.c_str());
  54
  55   StorageImpl* storage =
  56       new StorageN11(this, id, get_maxmin_system(), Bread, Bwrite, type_id, content_name, storage_type->size, attach);
  57   storageCreatedCallbacks(storage);
  58
  59   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(),
  60             Bread);
  61
  62   return storage;
  63 }
  64
  65 double StorageN11Model::next_occuring_event(double now)
  66 {
  67   return StorageModel::next_occuring_event_full(now);
  68 }
  69
  70 void StorageN11Model::update_actions_state(double /*now*/, double delta)
  71 {
  72   for (auto it = std::begin(*get_running_action_set()); it != std::end(*get_running_action_set());) {
  73     StorageAction& action = static_cast<StorageAction&>(*it);
  74     ++it; // increment iterator here since the following calls to action.finish() may invalidate it
  75     action.update_remains(lrint(action.get_variable()->get_value() * delta));
  76
  77     if (action.get_max_duration() > NO_MAX_DURATION)
  78       action.update_max_duration(delta);
  79
  80     if (((action.get_remains_no_update() <= 0) && (action.get_variable()->get_weight() > 0)) ||
  81         ((action.get_max_duration() > NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
  82       action.finish(kernel::resource::Action::State::done);
  83     }
  84   }
  85 }
  86
  87 /************
  88  * Resource *
  89  ************/
  90
  91 StorageN11::StorageN11(StorageModel* model, std::string name, kernel::lmm::System* maxminSystem, double bread,
  92                        double bwrite, std::string type_id, std::string content_name, sg_size_t size, std::string attach)
  93     : StorageImpl(model, name, maxminSystem, bread, bwrite, type_id, content_name, size, attach)
  94 {
  95   XBT_DEBUG("Create resource with Bread '%f' Bwrite '%f' and Size '%llu'", bread, bwrite, size);
  96   simgrid::s4u::Storage::onCreation(this->piface_);
  97 }
  98
  99 StorageAction* StorageN11::read(sg_size_t size)
 100 {
 101   return new StorageN11Action(get_model(), size, is_off(), this, READ);
 102 }
 103
 104 StorageAction* StorageN11::write(sg_size_t size)
 105 {
 106   return new StorageN11Action(get_model(), size, is_off(), this, WRITE);
 107 }
 108
 109 /**********
 110  * Action *
 111  **********/
 112
 113 StorageN11Action::StorageN11Action(kernel::resource::Model* model, double cost, bool failed, StorageImpl* storage,
 114                                    e_surf_action_storage_type_t type)
 115     : StorageAction(model, cost, failed, model->get_maxmin_system()->variable_new(this, 1.0, -1.0, 3), storage, type)
 116 {
 117   XBT_IN("(%s,%g", storage->get_cname(), cost);
 118
 119   // Must be less than the max bandwidth for all actions
 120   model->get_maxmin_system()->expand(storage->get_constraint(), get_variable(), 1.0);
 121   switch(type) {
 122   case READ:
 123     model->get_maxmin_system()->expand(storage->constraintRead_, get_variable(), 1.0);
 124     break;
 125   case WRITE:
 126     model->get_maxmin_system()->expand(storage->constraintWrite_, get_variable(), 1.0);
 127     break;
 128   default:
 129     THROW_UNIMPLEMENTED;
 130   }
 131   XBT_OUT();
 132 }
 133
 134 void StorageN11Action::cancel()
 135 {
 136   set_state(Action::State::failed);
 137 }
 138
 139 void StorageN11Action::suspend()
 140 {
 141   XBT_IN("(%p)", this);
 142   if (suspended_ != Action::SuspendStates::sleeping) {
 143     get_model()->get_maxmin_system()->update_variable_weight(get_variable(), 0.0);
 144     suspended_ = Action::SuspendStates::suspended;
 145   }
 146   XBT_OUT();
 147 }
 148
 149 void StorageN11Action::resume()
 150 {
 151   THROW_UNIMPLEMENTED;
 152 }
 153
 154 void StorageN11Action::set_max_duration(double /*duration*/)
 155 {
 156   THROW_UNIMPLEMENTED;
 157 }
 158
 159 void StorageN11Action::set_priority(double /*priority*/)
 160 {
 161   THROW_UNIMPLEMENTED;
 162 }
 163 void StorageN11Action::update_remains_lazy(double /*now*/)
 164 {
 165   THROW_IMPOSSIBLE;
 166 }
 167 }
 168 }