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/EngineImpl.hpp"
11 #include "src/kernel/lmm/maxmin.hpp"
12 #include "src/surf/xml/platf.hpp"
13 #include "surf/surf.hpp"
15 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_disk);
21 void surf_disk_model_init_default()
23 auto disk_model = std::make_unique<simgrid::kernel::resource::DiskS19Model>();
24 simgrid::kernel::EngineImpl::get_instance()->add_model(simgrid::kernel::resource::Model::Type::DISK,
25 std::move(disk_model), true);
32 DiskS19Model::DiskS19Model()
36 DiskImpl* DiskS19Model::create_disk(const std::string& name, double read_bandwidth, double write_bandwidth)
38 return (new DiskS19(name, read_bandwidth, write_bandwidth))->set_model(this);
41 double DiskS19Model::next_occurring_event(double now)
43 return DiskModel::next_occurring_event_full(now);
46 void DiskS19Model::update_actions_state(double /*now*/, double delta)
48 for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
50 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
51 action.update_remains(rint(action.get_variable()->get_value() * delta));
52 action.update_max_duration(delta);
54 if (((action.get_remains_no_update() <= 0) && (action.get_variable()->get_penalty() > 0)) ||
55 ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
56 action.finish(Action::State::FINISHED);
64 DiskAction* DiskS19::io_start(sg_size_t size, s4u::Io::OpType type)
66 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, type);
69 DiskAction* DiskS19::read(sg_size_t size)
71 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, s4u::Io::OpType::READ);
74 DiskAction* DiskS19::write(sg_size_t size)
76 return new DiskS19Action(get_model(), static_cast<double>(size), not is_on(), this, s4u::Io::OpType::WRITE);
83 DiskS19Action::DiskS19Action(Model* model, double cost, bool failed, DiskImpl* disk, s4u::Io::OpType type)
84 : DiskAction(model, cost, failed, model->get_maxmin_system()->variable_new(this, 1.0, -1.0, 3), disk, type)
86 XBT_IN("(%s,%g", disk->get_cname(), cost);
88 // Must be less than the max bandwidth for all actions
89 model->get_maxmin_system()->expand(disk->get_constraint(), get_variable(), 1.0);
91 case s4u::Io::OpType::READ:
92 model->get_maxmin_system()->expand(disk->get_read_constraint(), get_variable(), 1.0);
94 case s4u::Io::OpType::WRITE:
95 model->get_maxmin_system()->expand(disk->get_write_constraint(), get_variable(), 1.0);
103 void DiskS19Action::cancel()
105 set_state(Action::State::FAILED);
108 void DiskS19Action::suspend()
110 XBT_IN("(%p)", this);
112 get_model()->get_maxmin_system()->update_variable_penalty(get_variable(), 0.0);
113 set_suspend_state(Action::SuspendStates::SUSPENDED);
118 void DiskS19Action::resume()
123 void DiskS19Action::set_max_duration(double /*duration*/)
128 void DiskS19Action::set_sharing_penalty(double)
132 void DiskS19Action::update_remains_lazy(double /*now*/)
136 } // namespace resource
137 } // namespace kernel
138 } // namespace simgrid