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[simgrid.git] / 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->getHost().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->getHost().c_str());
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(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   ActionList *actionSet = getRunningActionSet();
78   for (ActionList::iterator it(actionSet->begin()), itNext = it, itend(actionSet->end()); it != itend; it = itNext) {
79     ++itNext;
80
81     StorageAction *action = static_cast<StorageAction*>(&*it);
82
83     if (action->type_ == WRITE) {
84       // Update the disk usage
85       // Update the file size
86       // For each action of type write
87       double current_progress = delta * lmm_variable_getvalue(action->getVariable());
88       long int incr = current_progress;
89
90       XBT_DEBUG("%s:\n\t progress =  %.2f, current_progress = %.2f, incr = %ld, lrint(1) = %ld, lrint(2) = %ld",
91                 action->file_->cname(), action->progress_, current_progress, incr,
92                 lrint(action->progress_ + current_progress), lrint(action->progress_) + incr);
93
94       /* take care of rounding error accumulation */
95       if (lrint(action->progress_ + current_progress) > lrint(action->progress_) + incr)
96         incr++;
97
98       action->progress_ += current_progress;
99
100       action->storage_->usedSize_ += incr;     // disk usage
101       action->file_->incrPosition(incr);       // current_position
102       //  which becomes the new file size
103       action->file_->setSize(action->file_->tell());
104
105       action->storage_->getContent()->erase(action->file_->cname());
106       action->storage_->getContent()->insert({action->file_->cname(), action->file_->size()});
107     }
108
109     action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
110
111     if (action->getMaxDuration() > NO_MAX_DURATION)
112       action->updateMaxDuration(delta);
113
114     if (action->getRemainsNoUpdate() > 0 && lmm_get_variable_weight(action->getVariable()) > 0 &&
115         action->storage_->usedSize_ == action->storage_->getSize()) {
116       action->finish();
117       action->setState(Action::State::failed);
118     } else if (((action->getRemainsNoUpdate() <= 0) && (lmm_get_variable_weight(action->getVariable()) > 0)) ||
119                ((action->getMaxDuration() > NO_MAX_DURATION) && (action->getMaxDuration() <= 0))) {
120       action->finish();
121       action->setState(Action::State::done);
122     }
123   }
124 }
125
126 /************
127  * Resource *
128  ************/
129
130 StorageN11::StorageN11(StorageModel* model, const char* name, lmm_system_t maxminSystem, double bread, double bwrite,
131                        const char* type_id, char* content_name, sg_size_t size, char* attach)
132     : StorageImpl(model, name, maxminSystem, bread, bwrite, type_id, content_name, size, attach)
133 {
134   XBT_DEBUG("Create resource with Bread '%f' Bwrite '%f' and Size '%llu'", bread, bwrite, size);
135   simgrid::s4u::Storage::onCreation(this->piface_);
136 }
137
138 StorageAction* StorageN11::read(sg_size_t size)
139 {
140   return new StorageN11Action(model(), size, isOff(), this, READ);
141 }
142
143 StorageAction* StorageN11::write(sg_size_t size)
144 {
145   return new StorageN11Action(model(), size, isOff(), this, WRITE);
146 }
147
148 /**********
149  * Action *
150  **********/
151
152 StorageN11Action::StorageN11Action(Model* model, double cost, bool failed, StorageImpl* storage,
153                                    e_surf_action_storage_type_t type)
154     : StorageAction(model, cost, failed, lmm_variable_new(model->getMaxminSystem(), this, 1.0, -1.0, 3), storage, type)
155 {
156   XBT_IN("(%s,%g", storage->cname(), cost);
157
158   // Must be less than the max bandwidth for all actions
159   lmm_expand(model->getMaxminSystem(), storage->constraint(), getVariable(), 1.0);
160   switch(type) {
161   case READ:
162     lmm_expand(model->getMaxminSystem(), storage->constraintRead_, getVariable(), 1.0);
163     break;
164   case WRITE:
165     lmm_expand(model->getMaxminSystem(), storage->constraintWrite_, getVariable(), 1.0);
166     break;
167   default:
168     THROW_UNIMPLEMENTED;
169   }
170   XBT_OUT();
171 }
172
173 int StorageN11Action::unref()
174 {
175   refcount_--;
176   if (not refcount_) {
177     if (action_hook.is_linked())
178       stateSet_->erase(stateSet_->iterator_to(*this));
179     if (getVariable())
180       lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
181     xbt_free(getCategory());
182     delete this;
183     return 1;
184   }
185   return 0;
186 }
187
188 void StorageN11Action::cancel()
189 {
190   setState(Action::State::failed);
191 }
192
193 void StorageN11Action::suspend()
194 {
195   XBT_IN("(%p)", this);
196   if (suspended_ != 2) {
197     lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 0.0);
198     suspended_ = 1;
199   }
200   XBT_OUT();
201 }
202
203 void StorageN11Action::resume()
204 {
205   THROW_UNIMPLEMENTED;
206 }
207
208 bool StorageN11Action::isSuspended()
209 {
210   return suspended_ == 1;
211 }
212
213 void StorageN11Action::setMaxDuration(double /*duration*/)
214 {
215   THROW_UNIMPLEMENTED;
216 }
217
218 void StorageN11Action::setSharingWeight(double /*priority*/)
219 {
220   THROW_UNIMPLEMENTED;
221 }
222
223 }
224 }