1 /* Copyright (c) 2013-2017. The SimGrid Team. All rights reserved. */
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. */
6 #include "storage_n11.hpp"
7 #include "simgrid/s4u/Engine.hpp"
8 #include "src/kernel/routing/NetPoint.hpp"
9 #include <math.h> /*ceil*/
11 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_storage);
16 extern std::map<std::string, storage_type_t> storage_types;
18 static void check_disk_attachment()
20 for (auto s : *simgrid::surf::StorageImpl::storagesMap()) {
21 simgrid::kernel::routing::NetPoint* host_elm = sg_netpoint_by_name_or_null(s.second->attach_.c_str());
23 surf_parse_error("Unable to attach storage %s: host %s does not exist.", s.second->cname(),
24 s.second->attach_.c_str());
26 s.second->piface_.attached_to_ = sg_host_by_name(s.second->attach_.c_str());
30 void storage_register_callbacks()
32 simgrid::s4u::onPlatformCreated.connect(check_disk_attachment);
33 instr_routing_define_callbacks();
40 void surf_storage_model_init_default()
42 surf_storage_model = new simgrid::surf::StorageN11Model();
43 all_existing_models->push_back(surf_storage_model);
49 StorageImpl* StorageN11Model::createStorage(const char* id, const char* type_id, const char* content_name,
52 storage_type_t storage_type = storage_types.at(type_id);
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);
59 StorageImpl* storage = new StorageN11(this, id, maxminSystem_, Bread, Bwrite, type_id, (char*)content_name,
60 storage_type->size, (char*)attach);
61 storageCreatedCallbacks(storage);
63 XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s'\n\t\tBread '%f'\n", id, type_id, Bread);
65 p_storageList.push_back(storage);
70 double StorageN11Model::nextOccuringEvent(double now)
72 double min_completion = StorageModel::nextOccuringEventFull(now);
74 for(auto storage: p_storageList) {
76 // Foreach write action on that disk
77 for (auto write_action: storage->writeActions_) {
78 rate += lmm_variable_getvalue(write_action->getVariable());
81 min_completion = MIN(min_completion, (storage->size_-storage->usedSize_)/rate);
84 return min_completion;
87 void StorageN11Model::updateActionsState(double /*now*/, double delta)
90 ActionList *actionSet = getRunningActionSet();
91 for(ActionList::iterator it(actionSet->begin()), itNext=it, itend(actionSet->end())
92 ; it != itend ; it=itNext) {
95 StorageAction *action = static_cast<StorageAction*>(&*it);
97 if (action->type_ == WRITE) {
98 // Update the disk usage
99 // Update the file size
100 // For each action of type write
101 double current_progress = delta * lmm_variable_getvalue(action->getVariable());
102 long int incr = current_progress;
104 XBT_DEBUG("%s:\n\t progress = %.2f, current_progress = %.2f, incr = %ld, lrint(1) = %ld, lrint(2) = %ld",
105 action->file_->cname(), action->progress_, current_progress, incr,
106 lrint(action->progress_ + current_progress), lrint(action->progress_) + incr);
108 /* take care of rounding error accumulation */
109 if (lrint(action->progress_ + current_progress) > lrint(action->progress_) + incr)
112 action->progress_ += current_progress;
114 action->storage_->usedSize_ += incr; // disk usage
115 action->file_->incrPosition(incr); // current_position
116 // which becomes the new file size
117 action->file_->setSize(action->file_->tell());
119 action->storage_->content_->erase(action->file_->cname());
120 action->storage_->content_->insert({action->file_->cname(), action->file_->size()});
123 action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
125 if (action->getMaxDuration() > NO_MAX_DURATION)
126 action->updateMaxDuration(delta);
128 if (action->getRemainsNoUpdate() > 0 && lmm_get_variable_weight(action->getVariable()) > 0 &&
129 action->storage_->usedSize_ == action->storage_->size_) {
131 action->setState(Action::State::failed);
132 } else if (((action->getRemainsNoUpdate() <= 0) && (lmm_get_variable_weight(action->getVariable()) > 0)) ||
133 ((action->getMaxDuration() > NO_MAX_DURATION) && (action->getMaxDuration() <= 0))) {
135 action->setState(Action::State::done);
144 StorageN11::StorageN11(StorageModel* model, const char* name, lmm_system_t maxminSystem, double bread, double bwrite,
145 const char* type_id, char* content_name, sg_size_t size, char* attach)
146 : StorageImpl(model, name, maxminSystem, bread, bwrite, type_id, content_name, size, attach)
148 XBT_DEBUG("Create resource with Bread '%f' Bwrite '%f' and Size '%llu'", bread, bwrite, size);
149 simgrid::s4u::Storage::onCreation(this->piface_);
152 StorageAction *StorageN11::open(const char* mount, const char* path)
154 XBT_DEBUG("\tOpen file '%s'",path);
157 // if file does not exist create an empty file
158 if (content_->find(path) != content_->end())
159 size = content_->at(path);
162 content_->insert({path, size});
163 XBT_DEBUG("File '%s' was not found, file created.",path);
165 FileImpl* file = new FileImpl(path, mount, size);
167 StorageAction* action = new StorageN11Action(model(), 0, isOff(), this, OPEN);
168 action->file_ = file;
173 StorageAction *StorageN11::close(surf_file_t fd)
175 XBT_DEBUG("\tClose file '%s' size '%llu'", fd->cname(), fd->size());
176 // unref write actions from storage
177 for (std::vector<StorageAction*>::iterator it = writeActions_.begin(); it != writeActions_.end();) {
178 StorageAction *write_action = *it;
179 if ((write_action->file_) == fd) {
180 write_action->unref();
181 it = writeActions_.erase(it);
186 StorageAction* action = new StorageN11Action(model(), 0, isOff(), this, CLOSE);
190 StorageAction *StorageN11::read(surf_file_t fd, sg_size_t size)
192 if (fd->tell() + size > fd->size()) {
193 if (fd->tell() > fd->size()) {
196 size = fd->size() - fd->tell();
198 fd->setPosition(fd->size());
201 fd->incrPosition(size);
203 StorageAction* action = new StorageN11Action(model(), size, isOff(), this, READ);
207 StorageAction *StorageN11::write(surf_file_t fd, sg_size_t size)
209 XBT_DEBUG("\tWrite file '%s' size '%llu/%llu'", fd->cname(), size, fd->size());
211 StorageAction* action = new StorageN11Action(model(), size, isOff(), this, WRITE);
213 /* Substract the part of the file that might disappear from the used sized on the storage element */
214 usedSize_ -= (fd->size() - fd->tell());
215 // If the storage is full before even starting to write
216 if(usedSize_==size_) {
217 action->setState(Action::State::failed);
226 StorageN11Action::StorageN11Action(Model* model, double cost, bool failed, StorageImpl* storage,
227 e_surf_action_storage_type_t type)
228 : StorageAction(model, cost, failed, lmm_variable_new(model->getMaxminSystem(), this, 1.0, -1.0, 3), storage, type)
230 XBT_IN("(%s,%g", storage->cname(), cost);
232 // Must be less than the max bandwidth for all actions
233 lmm_expand(model->getMaxminSystem(), storage->constraint(), getVariable(), 1.0);
240 lmm_expand(model->getMaxminSystem(), storage->constraintRead_, getVariable(), 1.0);
243 lmm_expand(model->getMaxminSystem(), storage->constraintWrite_, getVariable(), 1.0);
245 //TODO there is something annoying with what's below. Have to sort it out...
246 // Action *action = this;
247 // storage->p_writeActions->push_back(action);
256 int StorageN11Action::unref()
260 if (action_hook.is_linked())
261 stateSet_->erase(stateSet_->iterator_to(*this));
263 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
264 xbt_free(getCategory());
271 void StorageN11Action::cancel()
273 setState(Action::State::failed);
276 void StorageN11Action::suspend()
278 XBT_IN("(%p)", this);
279 if (suspended_ != 2) {
280 lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 0.0);
286 void StorageN11Action::resume()
291 bool StorageN11Action::isSuspended()
293 return suspended_ == 1;
296 void StorageN11Action::setMaxDuration(double /*duration*/)
301 void StorageN11Action::setSharingWeight(double /*priority*/)