-/* Copyright (c) 2019-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2019-2022. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "DiskImpl.hpp"
#include "simgrid/s4u/Engine.hpp"
+#include "simgrid/sg_config.hpp"
#include "src/kernel/EngineImpl.hpp"
#include "src/kernel/lmm/maxmin.hpp"
+#include "src/kernel/resource/profile/Profile.hpp"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(res_disk, ker_resource, "Disk resources, that fuel I/O activities");
+/***********
+ * Options *
+ ***********/
+static simgrid::config::Flag<std::string> cfg_disk_solver("disk/solver",
+ "Set linear equations solver used by disk model", "maxmin",
+ &simgrid::kernel::lmm::System::validate_solver);
namespace simgrid {
namespace kernel {
DiskModel::DiskModel(const std::string& name) : Model(name)
{
- set_maxmin_system(new lmm::System(true /* selective update */));
+ set_maxmin_system(lmm::System::build(cfg_disk_solver, true /* selective update */));
}
/************
* Resource *
************/
-DiskImpl* DiskImpl::set_host(s4u::Host* host)
+DiskImpl::DiskImpl(const std::string& name, double read_bandwidth, double write_bandwidth)
+ : Resource_T(name), piface_(this)
{
- xbt_assert(host, "Cannot set host, none given");
- host_ = host;
- return this;
+ read_bw_.peak = read_bandwidth;
+ read_bw_.scale = 1.0;
+ write_bw_.peak = write_bandwidth;
+ write_bw_.scale = 1.0;
}
-DiskImpl* DiskImpl::set_read_bandwidth(double read_bw)
-{
- read_bw_ = read_bw;
- return this;
-}
-
-DiskImpl* DiskImpl::set_write_bandwidth(double write_bw)
+DiskImpl* DiskImpl::set_host(s4u::Host* host)
{
- write_bw_ = write_bw;
+ xbt_assert(host, "Cannot set host, none given");
+ host_ = host;
return this;
}
delete this;
}
-bool DiskImpl::is_used() const
-{
- return get_model()->get_maxmin_system()->constraint_used(get_constraint());
-}
-
-void DiskImpl::apply_event(kernel::profile::Event* /*event*/, double /*value*/)
-{
- THROW_UNIMPLEMENTED;
-}
-
void DiskImpl::turn_on()
{
if (not is_on()) {
}
}
+DiskImpl* DiskImpl::set_read_bandwidth_profile(profile::Profile* profile)
+{
+ if (profile) {
+ xbt_assert(read_bw_.event == nullptr, "Cannot set a second read bandwidth profile to Disk %s", get_cname());
+ read_bw_.event = profile->schedule(&profile::future_evt_set, this);
+ }
+ return this;
+}
+
+DiskImpl* DiskImpl::set_write_bandwidth_profile(profile::Profile* profile)
+{
+ if (profile) {
+ xbt_assert(write_bw_.event == nullptr, "Cannot set a second read bandwidth profile to Disk %s", get_cname());
+ write_bw_.event = profile->schedule(&profile::future_evt_set, this);
+ }
+ return this;
+}
+
void DiskImpl::seal()
{
+ if (is_sealed())
+ return;
+
xbt_assert(this->get_model(), "Cannot seal Disk (%s) without setting the model first", get_cname());
lmm::System* maxmin_system = get_model()->get_maxmin_system();
- this->set_read_constraint(maxmin_system->constraint_new(this, read_bw_))
- ->set_write_constraint(maxmin_system->constraint_new(this, write_bw_))
- ->set_constraint(maxmin_system->constraint_new(this, std::max(read_bw_, write_bw_)));
- XBT_DEBUG("Create resource with read_bw '%f' write_bw '%f'", read_bw_, write_bw_);
+ /* set readwrite constraint if not configured by user */
+ if (readwrite_bw_ == -1) {
+ readwrite_bw_ = std::max(read_bw_.peak, write_bw_.peak);
+ }
+ this->set_read_constraint(maxmin_system->constraint_new(this, read_bw_.peak * read_bw_.scale))
+ ->set_write_constraint(maxmin_system->constraint_new(this, write_bw_.peak * write_bw_.scale))
+ ->set_constraint(maxmin_system->constraint_new(this, readwrite_bw_));
+ apply_sharing_policy_cfg();
+ XBT_DEBUG("Create resource with read_bw '%f' write_bw '%f'", read_bw_.peak, write_bw_.peak);
Resource::seal();
turn_on();
}
+constexpr kernel::lmm::Constraint::SharingPolicy to_maxmin_policy(s4u::Disk::SharingPolicy policy)
+{
+ kernel::lmm::Constraint::SharingPolicy lmm_policy = kernel::lmm::Constraint::SharingPolicy::SHARED;
+ if (policy == s4u::Disk::SharingPolicy::NONLINEAR)
+ lmm_policy = kernel::lmm::Constraint::SharingPolicy::NONLINEAR;
+ return lmm_policy;
+}
+
+void DiskImpl::set_sharing_policy(s4u::Disk::Operation op, s4u::Disk::SharingPolicy policy,
+ const s4u::NonLinearResourceCb& cb)
+{
+ sharing_policy_[op] = policy;
+ sharing_policy_cb_[op] = cb;
+ apply_sharing_policy_cfg();
+}
+
+s4u::Disk::SharingPolicy DiskImpl::get_sharing_policy(s4u::Disk::Operation op) const
+{
+ return sharing_policy_.at(op);
+}
+
+void DiskImpl::apply_sharing_policy_cfg()
+{
+ if (get_constraint())
+ get_constraint()->set_sharing_policy(to_maxmin_policy(sharing_policy_[s4u::Disk::Operation::READWRITE]),
+ sharing_policy_cb_[s4u::Disk::Operation::READWRITE]);
+ if (constraint_read_)
+ constraint_read_->set_sharing_policy(to_maxmin_policy(sharing_policy_[s4u::Disk::Operation::READ]),
+ sharing_policy_cb_[s4u::Disk::Operation::READ]);
+ if (constraint_write_)
+ constraint_write_->set_sharing_policy(to_maxmin_policy(sharing_policy_[s4u::Disk::Operation::WRITE]),
+ sharing_policy_cb_[s4u::Disk::Operation::WRITE]);
+}
+
+void DiskImpl::set_factor_cb(const std::function<s4u::Disk::IoFactorCb>& cb)
+{
+ xbt_assert(not is_sealed(), "Cannot set I/O factor callback in an already sealed disk(%s)", get_cname());
+ factor_cb_ = cb;
+}
+
/**********
* Action *
**********/
