-/* Copyright (c) 2018-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2018-2022. 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 "simgrid/s4u/Disk.hpp"
-#include "simgrid/s4u/Io.hpp"
-#include "simgrid/s4u/Storage.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::s4u {
+xbt::signal<void(Io const&)> Io::on_start;
+
+Io::Io(kernel::activity::IoImplPtr pimpl)
+{
+ pimpl_ = pimpl;
+}
+
+IoPtr Io::init()
+{
+ auto pimpl = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
+ return IoPtr(static_cast<Io*>(pimpl->get_iface()));
+}
+
+IoPtr Io::streamto_init(Host* from, Disk* from_disk, Host* to, Disk* to_disk)
+{
+ auto res = Io::init()->set_source(from, from_disk)->set_destination(to, to_disk);
+ res->set_state(State::STARTING);
+ return res;
+}
-namespace simgrid {
-namespace s4u {
+IoPtr Io::streamto_async(Host* from, Disk* from_disk, Host* to, Disk* to_disk, uint64_t simulated_size_in_bytes)
+{
+ return Io::init()->set_size(simulated_size_in_bytes)->set_source(from, from_disk)->set_destination(to, to_disk);
+}
+
+void Io::streamto(Host* from, Disk* from_disk, Host* to, Disk* to_disk, uint64_t simulated_size_in_bytes)
+{
+ streamto_async(from, from_disk, to, to_disk, simulated_size_in_bytes)->wait();
+}
-Io::Io(sg_disk_t disk, sg_size_t size, OpType type) : disk_(disk), size_(size), type_(type)
+IoPtr Io::set_source(Host* from, Disk* from_disk)
{
- Activity::set_remaining(size_);
- pimpl_ = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
+ 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_answered(
+ [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
+ vetoable_start();
+
+ return this;
}
-Io::Io(sg_storage_t storage, sg_size_t size, OpType type) : storage_(storage), size_(size), type_(type)
+IoPtr Io::set_destination(Host* to, Disk* to_disk)
{
- Activity::set_remaining(size_);
- pimpl_ = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
+ 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_answered(
+ [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
+ vetoable_start();
+
+ return this;
}
Io* Io::start()
{
- kernel::actor::simcall([this] {
- if (storage_) {
- (*boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_))
- .set_name(get_name())
- .set_storage(storage_->get_impl())
- .set_size(size_)
- .set_type(type_)
- .start();
- } else {
- (*boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_))
- .set_name(get_name())
- .set_disk(disk_->get_impl())
- .set_size(size_)
- .set_type(type_)
- .start();
- }
- });
+ 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;
+ on_start(*this);
return this;
}
-Io* Io::cancel()
+ssize_t Io::wait_any_for(const std::vector<IoPtr>& ios, double timeout)
+{
+ std::vector<ActivityPtr> activities;
+ for (const auto& io : ios)
+ activities.push_back(boost::dynamic_pointer_cast<Activity>(io));
+ return Activity::wait_any_for(activities, timeout);
+}
+
+IoPtr Io::set_disk(const_sg_disk_t disk)
+{
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set disk once the Io is started");
+
+ kernel::actor::simcall_answered(
+ [this, disk] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_disk(disk->get_impl()); });
+
+ // Setting the disk may allow to start the activity, let's try
+ if (state_ == State::STARTING)
+ vetoable_start();
+
+ return this;
+}
+
+IoPtr Io::set_priority(double priority)
{
- simgrid::kernel::actor::simcall([this] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->cancel(); });
- state_ = State::CANCELED;
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the priority of an io after its start");
+ kernel::actor::simcall_answered([this, priority] {
+ boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_sharing_penalty(1. / priority);
+ });
return this;
}
-Io* Io::wait()
+IoPtr Io::set_size(sg_size_t size)
{
- return this->wait_for(-1);
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set size once the Io is started");
+ kernel::actor::simcall_answered(
+ [this, size] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_size(size); });
+ set_remaining(size);
+ return this;
}
-Io* Io::wait_for(double timeout)
+IoPtr Io::set_op_type(OpType type)
{
- if (state_ == State::INITED)
- vetoable_start();
- simcall_io_wait(get_impl(), timeout);
- state_ = State::FINISHED;
- this->release_dependencies();
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set size once the Io is started");
+ kernel::actor::simcall_answered(
+ [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(
+ return kernel::actor::simcall_answered(
[this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
}
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
