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 xbt_lib_cursor_t cursor;
23 xbt_lib_foreach(storage_lib, cursor, key, data) {
24 if (xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != nullptr) {
25 simgrid::surf::Storage* storage =
26 static_cast<simgrid::surf::Storage*>(xbt_lib_get_or_null(storage_lib, key, SURF_STORAGE_LEVEL));
27 simgrid::kernel::routing::NetPoint* host_elm = sg_netpoint_by_name_or_null(storage->attach_);
29 surf_parse_error("Unable to attach storage %s: host %s does not exist.", storage->cname(), storage->attach_);
34 void storage_register_callbacks()
36 simgrid::s4u::onPlatformCreated.connect(check_disk_attachment);
37 instr_routing_define_callbacks();
39 SURF_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, [](void *self) {
40 delete static_cast<simgrid::surf::Storage*>(self);
48 void surf_storage_model_init_default()
50 surf_storage_model = new simgrid::surf::StorageN11Model();
51 all_existing_models->push_back(surf_storage_model);
57 Storage* StorageN11Model::createStorage(const char* id, const char* type_id, const char* content_name,
60 storage_type_t storage_type = storage_types.at(type_id);
63 surf_parse_get_bandwidth(storage_type->model_properties->at("Bread").c_str(), "property Bread, storage", type_id);
64 double Bwrite = surf_parse_get_bandwidth(storage_type->model_properties->at("Bwrite").c_str(),
65 "property Bwrite, storage", type_id);
67 Storage* storage = new StorageN11(this, id, maxminSystem_, Bread, Bwrite, type_id, (char*)content_name,
68 storage_type->size, (char*)attach);
69 xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, storage);
70 storageCreatedCallbacks(storage);
72 XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s'\n\t\tBread '%f'\n", id, type_id, Bread);
74 p_storageList.push_back(storage);
79 double StorageN11Model::nextOccuringEvent(double now)
81 double min_completion = StorageModel::nextOccuringEventFull(now);
83 for(auto storage: p_storageList) {
85 // Foreach write action on that disk
86 for (auto write_action: storage->writeActions_) {
87 rate += lmm_variable_getvalue(write_action->getVariable());
90 min_completion = MIN(min_completion, (storage->size_-storage->usedSize_)/rate);
93 return min_completion;
96 void StorageN11Model::updateActionsState(double /*now*/, double delta)
99 ActionList *actionSet = getRunningActionSet();
100 for(ActionList::iterator it(actionSet->begin()), itNext=it, itend(actionSet->end())
101 ; it != itend ; it=itNext) {
104 StorageAction *action = static_cast<StorageAction*>(&*it);
106 if (action->type_ == WRITE) {
107 // Update the disk usage
108 // Update the file size
109 // For each action of type write
110 double current_progress = delta * lmm_variable_getvalue(action->getVariable());
111 long int incr = current_progress;
113 XBT_DEBUG("%s:\n\t progress = %.2f, current_progress = %.2f, incr = %ld, lrint(1) = %ld, lrint(2) = %ld",
114 action->file_->name, action->progress_, current_progress, incr,
115 lrint(action->progress_ + current_progress), lrint(action->progress_) + incr);
117 /* take care of rounding error accumulation */
118 if (lrint(action->progress_ + current_progress) > lrint(action->progress_) + incr)
121 action->progress_ += current_progress;
123 action->storage_->usedSize_ += incr; // disk usage
124 action->file_->current_position += incr; // current_position
125 // which becomes the new file size
126 action->file_->size = action->file_->current_position;
128 sg_size_t* psize = new sg_size_t;
129 *psize = action->file_->size;
130 std::map<std::string, sg_size_t*>* content_dict = action->storage_->content_;
131 auto entry = content_dict->find(action->file_->name);
132 delete entry->second;
133 entry->second = psize;
136 action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
138 if (action->getMaxDuration() > NO_MAX_DURATION)
139 action->updateMaxDuration(delta);
141 if (action->getRemainsNoUpdate() > 0 && lmm_get_variable_weight(action->getVariable()) > 0 &&
142 action->storage_->usedSize_ == action->storage_->size_) {
144 action->setState(Action::State::failed);
145 } else if (((action->getRemainsNoUpdate() <= 0) && (lmm_get_variable_weight(action->getVariable()) > 0)) ||
146 ((action->getMaxDuration() > NO_MAX_DURATION) && (action->getMaxDuration() <= 0))) {
148 action->setState(Action::State::done);
157 StorageN11::StorageN11(StorageModel* model, const char* name, lmm_system_t maxminSystem, double bread, double bwrite,
158 const char* type_id, char* content_name, sg_size_t size, char* attach)
159 : Storage(model, name, maxminSystem, bread, bwrite, type_id, content_name, size, attach)
161 XBT_DEBUG("Create resource with Bread '%f' Bwrite '%f' and Size '%llu'", bread, bwrite, size);
164 StorageAction *StorageN11::open(const char* mount, const char* path)
166 XBT_DEBUG("\tOpen file '%s'",path);
169 sg_size_t* psize = nullptr;
170 // if file does not exist create an empty file
171 if (content_->find(path) != content_->end())
172 size = *(content_->at(path));
174 psize = new sg_size_t;
177 content_->insert({path, psize});
178 XBT_DEBUG("File '%s' was not found, file created.",path);
180 surf_file_t file = xbt_new0(s_surf_file_t,1);
181 file->name = xbt_strdup(path);
183 file->mount = xbt_strdup(mount);
184 file->current_position = 0;
186 StorageAction* action = new StorageN11Action(model(), 0, isOff(), this, OPEN);
187 action->file_ = file;
192 StorageAction *StorageN11::close(surf_file_t fd)
194 XBT_DEBUG("\tClose file '%s' size '%llu'", fd->name, fd->size);
195 // unref write actions from storage
196 for (std::vector<StorageAction*>::iterator it = writeActions_.begin(); it != writeActions_.end();) {
197 StorageAction *write_action = *it;
198 if ((write_action->file_) == fd) {
199 write_action->unref();
200 it = writeActions_.erase(it);
208 StorageAction* action = new StorageN11Action(model(), 0, isOff(), this, CLOSE);
212 StorageAction *StorageN11::read(surf_file_t fd, sg_size_t size)
214 if(fd->current_position + size > fd->size){
215 if (fd->current_position > fd->size){
218 size = fd->size - fd->current_position;
220 fd->current_position = fd->size;
223 fd->current_position += size;
225 StorageAction* action = new StorageN11Action(model(), size, isOff(), this, READ);
229 StorageAction *StorageN11::write(surf_file_t fd, sg_size_t size)
231 char *filename = fd->name;
232 XBT_DEBUG("\tWrite file '%s' size '%llu/%llu'",filename,size,fd->size);
234 StorageAction* action = new StorageN11Action(model(), size, isOff(), this, WRITE);
236 /* Substract the part of the file that might disappear from the used sized on the storage element */
237 usedSize_ -= (fd->size - fd->current_position);
238 // If the storage is full before even starting to write
239 if(usedSize_==size_) {
240 action->setState(Action::State::failed);
249 StorageN11Action::StorageN11Action(Model *model, double cost, bool failed, Storage *storage, e_surf_action_storage_type_t type)
250 : StorageAction(model, cost, failed,
251 lmm_variable_new(model->getMaxminSystem(), this, 1.0, -1.0 , 3),
253 XBT_IN("(%s,%g", storage->cname(), cost);
255 // Must be less than the max bandwidth for all actions
256 lmm_expand(model->getMaxminSystem(), storage->constraint(), getVariable(), 1.0);
263 lmm_expand(model->getMaxminSystem(), storage->constraintRead_, getVariable(), 1.0);
266 lmm_expand(model->getMaxminSystem(), storage->constraintWrite_, getVariable(), 1.0);
268 //TODO there is something annoying with what's below. Have to sort it out...
269 // Action *action = this;
270 // storage->p_writeActions->push_back(action);
279 int StorageN11Action::unref()
283 if (action_hook.is_linked())
284 stateSet_->erase(stateSet_->iterator_to(*this));
286 lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
287 xbt_free(getCategory());
294 void StorageN11Action::cancel()
296 setState(Action::State::failed);
299 void StorageN11Action::suspend()
301 XBT_IN("(%p)", this);
302 if (suspended_ != 2) {
303 lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 0.0);
309 void StorageN11Action::resume()
314 bool StorageN11Action::isSuspended()
316 return suspended_ == 1;
319 void StorageN11Action::setMaxDuration(double /*duration*/)
324 void StorageN11Action::setPriority(double /*priority*/)