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 surf_disk_model = new simgrid::kernel::resource::DiskS19Model();
29 DiskS19Model::DiskS19Model()
31 all_existing_models.push_back(this);
32 models_by_type[simgrid::kernel::resource::Model::Type::DISK].push_back(this);
35 DiskImpl* DiskS19Model::create_disk(const std::string& name, double read_bandwidth, double write_bandwidth)
37 return (new DiskS19(name, read_bandwidth, write_bandwidth))->set_model(this);
40 double DiskS19Model::next_occurring_event(double now)
42 return DiskModel::next_occurring_event_full(now);
45 void DiskS19Model::update_actions_state(double /*now*/, double delta)
47 for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
49 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
50 action.update_remains(rint(action.get_variable()->get_value() * delta));
51 action.update_max_duration(delta);
53 if (((action.get_remains_no_update() <= 0) && (action.get_variable()->get_penalty() > 0)) ||
54 ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
55 action.finish(Action::State::FINISHED);
63 DiskAction* DiskS19::io_start(sg_size_t size, s4u::Io::OpType type)
65 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, type);
68 DiskAction* DiskS19::read(sg_size_t size)
70 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, s4u::Io::OpType::READ);
73 DiskAction* DiskS19::write(sg_size_t size)
75 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, s4u::Io::OpType::WRITE);
82 DiskS19Action::DiskS19Action(Model* model, double cost, bool failed, DiskImpl* disk, s4u::Io::OpType type)
83 : DiskAction(model, cost, failed, model->get_maxmin_system()->variable_new(this, 1.0, -1.0, 3), disk, type)
85 XBT_IN("(%s,%g", disk->get_cname(), cost);
87 // Must be less than the max bandwidth for all actions
88 model->get_maxmin_system()->expand(disk->get_constraint(), get_variable(), 1.0);
90 case s4u::Io::OpType::READ:
91 model->get_maxmin_system()->expand(disk->get_read_constraint(), get_variable(), 1.0);
93 case s4u::Io::OpType::WRITE:
94 model->get_maxmin_system()->expand(disk->get_write_constraint(), get_variable(), 1.0);
102 void DiskS19Action::cancel()
104 set_state(Action::State::FAILED);
107 void DiskS19Action::suspend()
109 XBT_IN("(%p)", this);
111 get_model()->get_maxmin_system()->update_variable_penalty(get_variable(), 0.0);
112 set_suspend_state(Action::SuspendStates::SUSPENDED);
117 void DiskS19Action::resume()
122 void DiskS19Action::set_max_duration(double /*duration*/)
127 void DiskS19Action::set_sharing_penalty(double)
131 void DiskS19Action::update_remains_lazy(double /*now*/)
135 } // namespace resource
136 } // namespace kernel
137 } // namespace simgrid