1 /* Copyright (c) 2013-2021. 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 "disk_s19.hpp"
7 #include "simgrid/kernel/routing/NetPoint.hpp"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "simgrid/s4u/Host.hpp"
10 #include "src/kernel/lmm/maxmin.hpp"
11 #include "src/surf/xml/platf.hpp"
12 #include "surf/surf.hpp"
14 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_disk);
20 void surf_disk_model_init_default()
22 /* FIXME[donassolo]: this smells bad, but works
23 * (the constructor saves its pointer in all_existing_models and models_by_type :O).
24 * We need a manager for these models */
25 new simgrid::kernel::resource::DiskS19Model();
32 DiskS19Model::DiskS19Model()
34 all_existing_models.push_back(this);
35 models_by_type[simgrid::kernel::resource::Model::Type::DISK].push_back(this);
38 DiskImpl* DiskS19Model::create_disk(const std::string& name, double read_bandwidth, double write_bandwidth)
40 return (new DiskS19(name, read_bandwidth, write_bandwidth))->set_model(this);
43 double DiskS19Model::next_occurring_event(double now)
45 return DiskModel::next_occurring_event_full(now);
48 void DiskS19Model::update_actions_state(double /*now*/, double delta)
50 for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
52 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
53 action.update_remains(rint(action.get_variable()->get_value() * delta));
54 action.update_max_duration(delta);
56 if (((action.get_remains_no_update() <= 0) && (action.get_variable()->get_penalty() > 0)) ||
57 ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
58 action.finish(Action::State::FINISHED);
66 DiskAction* DiskS19::io_start(sg_size_t size, s4u::Io::OpType type)
68 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, type);
71 DiskAction* DiskS19::read(sg_size_t size)
73 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, s4u::Io::OpType::READ);
76 DiskAction* DiskS19::write(sg_size_t size)
78 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, s4u::Io::OpType::WRITE);
85 DiskS19Action::DiskS19Action(Model* model, double cost, bool failed, DiskImpl* disk, s4u::Io::OpType type)
86 : DiskAction(model, cost, failed, model->get_maxmin_system()->variable_new(this, 1.0, -1.0, 3), disk, type)
88 XBT_IN("(%s,%g", disk->get_cname(), cost);
90 // Must be less than the max bandwidth for all actions
91 model->get_maxmin_system()->expand(disk->get_constraint(), get_variable(), 1.0);
93 case s4u::Io::OpType::READ:
94 model->get_maxmin_system()->expand(disk->get_read_constraint(), get_variable(), 1.0);
96 case s4u::Io::OpType::WRITE:
97 model->get_maxmin_system()->expand(disk->get_write_constraint(), get_variable(), 1.0);
105 void DiskS19Action::cancel()
107 set_state(Action::State::FAILED);
110 void DiskS19Action::suspend()
112 XBT_IN("(%p)", this);
114 get_model()->get_maxmin_system()->update_variable_penalty(get_variable(), 0.0);
115 set_suspend_state(Action::SuspendStates::SUSPENDED);
120 void DiskS19Action::resume()
125 void DiskS19Action::set_max_duration(double /*duration*/)
130 void DiskS19Action::set_sharing_penalty(double)
134 void DiskS19Action::update_remains_lazy(double /*now*/)
138 } // namespace resource
139 } // namespace kernel
140 } // namespace simgrid