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/kernel/routing/NetZoneImpl.hpp"
9 #include "simgrid/s4u/Engine.hpp"
10 #include "simgrid/s4u/Host.hpp"
11 #include "src/kernel/EngineImpl.hpp"
12 #include "src/kernel/lmm/maxmin.hpp"
13 #include "src/kernel/resource/profile/Event.hpp"
14 #include "src/surf/xml/platf.hpp"
15 #include "surf/surf.hpp"
17 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_disk);
23 void surf_disk_model_init_default()
25 auto disk_model = std::make_shared<simgrid::kernel::resource::DiskS19Model>("Disk");
26 simgrid::kernel::EngineImpl::get_instance()->add_model(disk_model);
27 simgrid::s4u::Engine::get_instance()->get_netzone_root()->get_impl()->set_disk_model(disk_model);
34 DiskImpl* DiskS19Model::create_disk(const std::string& name, double read_bandwidth, double write_bandwidth)
36 return (new DiskS19(name, read_bandwidth, write_bandwidth))->set_model(this);
39 void DiskS19Model::update_actions_state(double /*now*/, double delta)
41 for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
43 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
44 action.update_remains(rint(action.get_rate() * delta));
45 action.update_max_duration(delta);
47 if (((action.get_remains_no_update() <= 0) && (action.get_variable()->get_penalty() > 0)) ||
48 ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
49 action.finish(Action::State::FINISHED);
54 DiskAction* DiskS19Model::io_start(const DiskImpl* disk, sg_size_t size, s4u::Io::OpType type)
56 auto* action = new DiskS19Action(this, static_cast<double>(size), not disk->is_on());
57 get_maxmin_system()->expand(disk->get_constraint(), action->get_variable(), 1.0);
59 case s4u::Io::OpType::READ:
60 get_maxmin_system()->expand(disk->get_read_constraint(), action->get_variable(), 1.0);
62 case s4u::Io::OpType::WRITE:
63 get_maxmin_system()->expand(disk->get_write_constraint(), action->get_variable(), 1.0);
74 void DiskS19::update_penalties(double delta) const
76 const kernel::lmm::Element* elem = nullptr;
77 const kernel::lmm::Element* nextelem = nullptr;
79 while (const auto* var = get_constraint()->get_variable_safe(&elem, &nextelem, &numelem)) {
80 auto* action = static_cast<DiskS19Action*>(var->get_id());
81 action->sharing_penalty_ += delta;
82 if (not action->is_suspended())
83 get_model()->get_maxmin_system()->update_variable_penalty(action->get_variable(), action->sharing_penalty_);
87 void DiskS19::set_read_bandwidth(double value)
89 read_bw_.peak = value;
91 get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), read_bw_.peak * read_bw_.scale);
93 double delta = 1.0 / value - 1.0 / (read_bw_.peak * read_bw_.scale);
94 update_penalties(delta);
97 void DiskS19::set_write_bandwidth(double value)
99 write_bw_.peak = value;
101 get_model()->get_maxmin_system()->update_constraint_bound(get_constraint(), write_bw_.peak * write_bw_.scale);
103 double delta = 1.0 / value - 1.0 / (write_bw_.peak * write_bw_.scale);
104 update_penalties(delta);
107 void DiskS19::apply_event(kernel::profile::Event* triggered, double value)
109 /* Find out which of my iterators was triggered, and react accordingly */
110 if (triggered == read_bw_.event) {
111 set_read_bandwidth(value);
112 tmgr_trace_event_unref(&read_bw_.event);
114 } else if (triggered == write_bw_.event) {
115 set_write_bandwidth(value);
116 tmgr_trace_event_unref(&write_bw_.event);
118 } else if (triggered == state_event_) {
123 tmgr_trace_event_unref(&state_event_);
125 xbt_die("Unknown event!\n");
128 XBT_DEBUG("There was a resource state event, need to update actions related to the constraint (%p)",
136 DiskS19Action::DiskS19Action(Model* model, double cost, bool failed)
137 : DiskAction(model, cost, failed, model->get_maxmin_system()->variable_new(this, 1.0, -1.0, 3))
141 void DiskS19Action::update_remains_lazy(double /*now*/)
145 } // namespace resource
146 } // namespace kernel
147 } // namespace simgrid