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");
22 DiskModel::DiskModel(const std::string& name) : Model(name)
24 set_maxmin_system(new lmm::System(true /* selective update */));
30 DiskImpl* DiskImpl::set_host(s4u::Host* host)
32 xbt_assert(host, "Cannot set host, none given");
37 DiskImpl* DiskImpl::set_read_bandwidth(double read_bw)
43 DiskImpl* DiskImpl::set_write_bandwidth(double write_bw)
49 DiskImpl* DiskImpl::set_read_constraint(lmm::Constraint* constraint_read)
51 constraint_read_ = constraint_read;
55 DiskImpl* DiskImpl::set_write_constraint(lmm::Constraint* constraint_write)
57 constraint_write_ = constraint_write;
61 /** @brief Fire the required callbacks and destroy the object
63 * Don't delete directly a Disk, call d->destroy() instead.
65 void DiskImpl::destroy()
67 s4u::Disk::on_destruction(this->piface_);
71 bool DiskImpl::is_used() const
73 return get_model()->get_maxmin_system()->constraint_used(get_constraint());
76 void DiskImpl::apply_event(kernel::profile::Event* /*event*/, double /*value*/)
81 void DiskImpl::turn_on()
85 s4u::Disk::on_state_change(this->piface_);
88 void DiskImpl::turn_off()
92 s4u::Disk::on_state_change(this->piface_);
98 xbt_assert(this->get_model(), "Cannot seal Disk (%s) without setting the model first", this->get_cname());
99 lmm::System* maxmin_system = get_model()->get_maxmin_system();
100 this->set_read_constraint(maxmin_system->constraint_new(this, read_bw_))
101 ->set_write_constraint(maxmin_system->constraint_new(this, write_bw_))
102 ->set_constraint(maxmin_system->constraint_new(this, std::max(read_bw_, write_bw_)));
103 XBT_DEBUG("Create resource with read_bw '%f' write_bw '%f'", read_bw_, write_bw_);
107 xbt::signal<void(DiskAction const&, Action::State, Action::State)> DiskAction::on_state_change;
112 void DiskAction::set_state(Action::State state)
114 Action::State old = get_state();
115 Action::set_state(state);
116 on_state_change(*this, old, state);
118 } // namespace resource
119 } // namespace kernel
120 } // namespace simgrid