1 /* Copyright (c) 2019-2021. 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 "DiskImpl.hpp"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "src/kernel/EngineImpl.hpp"
10 #include "src/kernel/lmm/maxmin.hpp"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(res_disk, ker_resource, "Disk resources, fuelling I/O activities");
14 simgrid::kernel::resource::DiskModel* surf_disk_model = nullptr;
24 DiskModel::DiskModel() : Model(Model::UpdateAlgo::FULL)
26 set_maxmin_system(new simgrid::kernel::lmm::System(true /* selective update */));
29 DiskModel::~DiskModel()
31 surf_disk_model = nullptr;
37 DiskImpl* DiskImpl::set_host(s4u::Host* host)
43 DiskImpl* DiskImpl::set_read_bandwidth(double read_bw)
49 DiskImpl* DiskImpl::set_write_bandwidth(double write_bw)
55 DiskImpl* DiskImpl::set_read_constraint(lmm::Constraint* constraint_read)
57 constraint_read_ = constraint_read;
61 DiskImpl* DiskImpl::set_write_constraint(lmm::Constraint* constraint_write)
63 constraint_write_ = constraint_write;
67 /** @brief Fire the required callbacks and destroy the object
69 * Don't delete directly a Disk, call d->destroy() instead.
71 void DiskImpl::destroy()
73 s4u::Disk::on_destruction(this->piface_);
77 bool DiskImpl::is_used() const
82 void DiskImpl::apply_event(kernel::profile::Event* /*event*/, double /*value*/)
87 void DiskImpl::turn_on()
91 s4u::Disk::on_state_change(this->piface_);
94 void DiskImpl::turn_off()
98 s4u::Disk::on_state_change(this->piface_);
102 void DiskImpl::seal()
104 lmm::System* maxmin_system = get_model()->get_maxmin_system();
105 this->set_read_constraint(maxmin_system->constraint_new(this, read_bw_))
106 ->set_write_constraint(maxmin_system->constraint_new(this, write_bw_))
107 ->set_constraint(maxmin_system->constraint_new(this, std::max(read_bw_, write_bw_)));
108 XBT_DEBUG("Create resource with read_bw '%f' write_bw '%f'", read_bw_, write_bw_);
112 xbt::signal<void(DiskAction const&, Action::State, Action::State)> DiskAction::on_state_change;
117 void DiskAction::set_state(Action::State state)
119 Action::State old = get_state();
120 Action::set_state(state);
121 on_state_change(*this, old, state);
123 } // namespace resource
124 } // namespace kernel
125 } // namespace simgrid