-/* Copyright (c) 2018-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2018-2023. 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 "simgrid/s4u/Actor.hpp"
-#include "simgrid/s4u/Disk.hpp"
-#include "simgrid/s4u/Io.hpp"
+#include <simgrid/s4u/ActivitySet.hpp>
+#include <simgrid/s4u/Disk.hpp>
+#include <simgrid/s4u/Io.hpp>
+#include <xbt/log.h>
+
#include "src/kernel/activity/IoImpl.hpp"
-#include "xbt/log.h"
+#include "src/kernel/actor/ActorImpl.hpp"
+#include "src/kernel/actor/SimcallObserver.hpp"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_io, s4u_activity, "S4U asynchronous I/Os");
-namespace simgrid {
-namespace s4u {
-xbt::signal<void(Io const&)> Io::on_start;
-xbt::signal<void(Io const&)> Io::on_completion;
+namespace simgrid::s4u {
-Io::Io()
+Io::Io(kernel::activity::IoImplPtr pimpl)
{
- pimpl_ = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
+ pimpl_ = pimpl;
}
IoPtr Io::init()
{
- return IoPtr(new Io());
+ auto pimpl = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
+ return IoPtr(static_cast<Io*>(pimpl->get_iface()));
+}
+
+IoPtr Io::streamto_init(Host* from, const Disk* from_disk, Host* to, const Disk* to_disk)
+{
+ auto res = Io::init()->set_source(from, from_disk)->set_destination(to, to_disk);
+ res->set_state(State::STARTING);
+ return res;
}
-Io* Io::start()
+IoPtr Io::streamto_async(Host* from, const Disk* from_disk, Host* to, const Disk* to_disk,
+ uint64_t simulated_size_in_bytes)
{
- kernel::actor::simcall([this] {
- (*boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_))
- .set_name(get_name())
- .set_disk(disk_->get_impl())
- .set_size(size_)
- .set_type(type_)
- .start();
+ return Io::init()->set_size(simulated_size_in_bytes)->set_source(from, from_disk)->set_destination(to, to_disk);
+}
+
+void Io::streamto(Host* from, const Disk* from_disk, Host* to, const Disk* to_disk, uint64_t simulated_size_in_bytes)
+{
+ streamto_async(from, from_disk, to, to_disk, simulated_size_in_bytes)->wait();
+}
+
+IoPtr Io::set_source(Host* from, const Disk* from_disk)
+{
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the source of an IO stream once it's started (state: %s)", to_c_str(state_));
+ kernel::actor::simcall_object_access(pimpl_.get(), [this, from, from_disk] {
+ boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_host(from);
+ if (from_disk != nullptr)
+ boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_disk(from_disk->get_impl());
});
+ // Setting 'source' may allow to start the activity, let's try
+ if (state_ == State::STARTING && remains_ <= 0)
+ XBT_DEBUG("This IO has a size of 0 byte. It cannot start yet");
+ else
+ start();
- if (suspended_)
- pimpl_->suspend();
+ return this;
+}
+
+IoPtr Io::set_destination(Host* to, const Disk* to_disk)
+{
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the source of an IO stream once it's started (state: %s)", to_c_str(state_));
+ kernel::actor::simcall_object_access(pimpl_.get(), [this, to, to_disk] {
+ boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_dst_host(to);
+ if (to_disk != nullptr)
+ boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_dst_disk(to_disk->get_impl());
+ });
+ // Setting 'destination' may allow to start the activity, let's try
+ if (state_ == State::STARTING && remains_ <= 0)
+ XBT_DEBUG("This IO has a size of 0 byte. It cannot start yet");
+ else
+ start();
- state_ = State::STARTED;
- on_start(*this);
return this;
}
-Io* Io::cancel()
+Io* Io::do_start()
{
- simgrid::kernel::actor::simcall([this] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->cancel(); });
- state_ = State::CANCELED;
+ kernel::actor::simcall_answered(
+ [this] { (*boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)).set_name(get_name()).start(); });
+
+ if (suspended_)
+ pimpl_->suspend();
+
+ state_ = State::STARTED;
+ fire_on_start();
+ fire_on_this_start();
return this;
}
-Io* Io::wait()
+ssize_t Io::deprecated_wait_any_for(const std::vector<IoPtr>& ios, double timeout)
{
- return this->wait_for(-1);
+ ActivitySet set;
+ for (const auto& io : ios)
+ set.push(io);
+
+ auto* ret = set.wait_any_for(timeout).get();
+ for (size_t i = 0; i < ios.size(); i++)
+ if (ios[i].get() == ret)
+ return i;
+
+ return -1;
}
-Io* Io::wait_for(double timeout)
+IoPtr Io::set_disk(const_sg_disk_t disk)
{
- if (state_ == State::INITED)
- vetoable_start();
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set disk once the Io is started");
- kernel::actor::ActorImpl* issuer = Actor::self()->get_impl();
- kernel::actor::simcall_blocking<void>([this, issuer, timeout] { this->get_impl()->wait_for(issuer, timeout); });
- state_ = State::FINISHED;
- this->release_dependencies();
+ kernel::actor::simcall_answered(
+ [this, disk] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_disk(disk->get_impl()); });
- on_completion(*this);
- return this;
+ // Setting the disk may allow to start the activity, let's try
+ if (state_ == State::STARTING)
+ start();
+
+ return this;
}
-IoPtr Io::set_disk(sg_disk_t disk)
+IoPtr Io::set_priority(double priority)
{
- disk_ = disk;
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the priority of an io after its start");
+ kernel::actor::simcall_object_access(pimpl_.get(), [this, priority] {
+ boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_sharing_penalty(1. / priority);
+ });
return this;
}
IoPtr Io::set_size(sg_size_t size)
{
- size_ = size;
- Activity::set_remaining(size_);
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set size once the Io is started");
+ kernel::actor::simcall_object_access(
+ pimpl_.get(), [this, size] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_size(size); });
+ set_remaining(size);
return this;
}
IoPtr Io::set_op_type(OpType type)
{
- type_ = type;
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set size once the Io is started");
+ kernel::actor::simcall_object_access(
+ pimpl_.get(), [this, type] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_type(type); });
+ return this;
+}
+
+IoPtr Io::update_priority(double priority)
+{
+ kernel::actor::simcall_answered([this, priority] {
+ boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->update_sharing_penalty(1. / priority);
+ });
return this;
}
/** @brief Returns the amount of flops that remain to be done */
double Io::get_remaining() const
{
- return kernel::actor::simcall(
- [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
+ return kernel::actor::simcall_object_access(
+ pimpl_.get(), [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
}
sg_size_t Io::get_performed_ioops() const
return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_performed_ioops();
}
-} // namespace s4u
-} // namespace simgrid
+bool Io::is_assigned() const
+{
+ if (boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_host() == nullptr) {
+ return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_disk() != nullptr;
+ } else {
+ return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_dst_host() != nullptr;
+ }
+}
+
+} // namespace simgrid::s4u