-/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2021. 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/Exception.hpp>
+#include <simgrid/kernel/routing/NetPoint.hpp>
+#include <simgrid/s4u/Engine.hpp>
+#include <simgrid/s4u/Host.hpp>
+
+#include "mc/mc.h"
#include "src/kernel/activity/IoImpl.hpp"
-#include "simgrid/kernel/resource/Action.hpp"
-#include "src/simix/smx_io_private.hpp"
-#include "src/surf/StorageImpl.hpp"
+#include "src/kernel/actor/ActorImpl.hpp"
+#include "src/kernel/actor/SimcallObserver.hpp"
+#include "src/kernel/context/Context.hpp"
+#include "src/kernel/resource/CpuImpl.hpp"
+#include "src/kernel/resource/DiskImpl.hpp"
+#include "src/mc/mc_replay.hpp"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_io);
namespace simgrid {
namespace kernel {
namespace activity {
-IoImpl::IoImpl(std::string name, surf::StorageImpl* storage) : ActivityImpl(std::move(name)), storage_(storage)
+IoImpl::IoImpl()
{
- this->state_ = SIMIX_RUNNING;
+ piface_ = new s4u::Io(this);
+ actor::ActorImpl* self = actor::ActorImpl::self();
+ if (self) {
+ actor_ = self;
+ self->activities_.emplace_back(this);
+ }
+}
- XBT_DEBUG("Create io impl %p", this);
+IoImpl& IoImpl::set_sharing_penalty(double sharing_penalty)
+{
+ sharing_penalty_ = sharing_penalty;
+ return *this;
}
-IoImpl::~IoImpl()
+IoImpl& IoImpl::update_sharing_penalty(double sharing_penalty)
{
- if (surf_action_ != nullptr)
- surf_action_->unref();
- XBT_DEBUG("Destroy io %p", this);
+ sharing_penalty_ = sharing_penalty;
+ surf_action_->set_sharing_penalty(sharing_penalty);
+ return *this;
}
-IoImpl* IoImpl::start(sg_size_t size, simgrid::s4u::Io::OpType type)
+IoImpl& IoImpl::set_timeout(double timeout)
{
- surf_action_ = storage_->io_start(size, type);
- surf_action_->set_data(this);
+ const s4u::Host* host = get_disk()->get_host();
+ timeout_detector_ = host->get_cpu()->sleep(timeout);
+ timeout_detector_->set_activity(this);
+ return *this;
+}
- XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
- simgrid::kernel::activity::IoImpl::on_start(this);
+IoImpl& IoImpl::set_type(s4u::Io::OpType type)
+{
+ type_ = type;
+ return *this;
+}
- return this;
+IoImpl& IoImpl::set_size(sg_size_t size)
+{
+ size_ = size;
+ return *this;
}
-void IoImpl::cancel()
+IoImpl& IoImpl::set_disk(resource::DiskImpl* disk)
{
- XBT_VERB("This exec %p is canceled", this);
- if (surf_action_ != nullptr)
- surf_action_->cancel();
+ disk_ = disk;
+ return *this;
}
-double IoImpl::get_remaining()
+IoImpl* IoImpl::start()
{
- return surf_action_ ? surf_action_->get_remains() : 0;
+ state_ = State::RUNNING;
+ surf_action_ =
+ disk_->get_host()->get_netpoint()->get_englobing_zone()->get_disk_model()->io_start(disk_, size_, type_);
+ surf_action_->set_sharing_penalty(sharing_penalty_);
+ surf_action_->set_activity(this);
+
+ XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
+
+ return this;
}
void IoImpl::post()
{
performed_ioops_ = surf_action_->get_cost();
- switch (surf_action_->get_state()) {
- case simgrid::kernel::resource::Action::State::FAILED:
- state_ = SIMIX_FAILED;
+ if (surf_action_->get_state() == resource::Action::State::FAILED) {
+ if (disk_ && not disk_->is_on())
+ state_ = State::FAILED;
+ else
+ state_ = State::CANCELED;
+ } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
+ if (surf_action_->get_remains() > 0.0) {
+ surf_action_->set_state(resource::Action::State::FAILED);
+ state_ = State::TIMEOUT;
+ } else {
+ state_ = State::DONE;
+ }
+ } else {
+ state_ = State::DONE;
+ }
+
+ clean_action();
+ if (timeout_detector_) {
+ timeout_detector_->unref();
+ timeout_detector_ = nullptr;
+ }
+
+ /* Answer all simcalls associated with the synchro */
+ finish();
+}
+void IoImpl::set_exception(actor::ActorImpl* issuer)
+{
+ switch (state_) {
+ case State::FAILED:
+ issuer->context_->set_wannadie();
+ piface_->complete(s4u::Activity::State::FAILED);
+ issuer->exception_ = std::make_exception_ptr(StorageFailureException(XBT_THROW_POINT, "Storage failed"));
break;
- case simgrid::kernel::resource::Action::State::FINISHED:
- state_ = SIMIX_DONE;
+ case State::CANCELED:
+ issuer->exception_ = std::make_exception_ptr(CancelException(XBT_THROW_POINT, "I/O Canceled"));
break;
- default:
- THROW_IMPOSSIBLE;
+ case State::TIMEOUT:
+ issuer->exception_ = std::make_exception_ptr(TimeoutException(XBT_THROW_POINT, "Timeouted"));
break;
+ default:
+ xbt_assert(state_ == State::DONE, "Internal error in IoImpl::finish(): unexpected synchro state %s",
+ to_c_str(state_));
+ }
+}
+
+void IoImpl::finish()
+{
+ XBT_DEBUG("IoImpl::finish() in state %s", to_c_str(state_));
+ while (not simcalls_.empty()) {
+ smx_simcall_t simcall = simcalls_.front();
+ simcalls_.pop_front();
+
+ /* If a waitany simcall is waiting for this synchro to finish, then remove it from the other synchros in the waitany
+ * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
+ * simcall */
+
+ if (simcall->call_ == simix::Simcall::NONE) // FIXME: maybe a better way to handle this case
+ continue; // if process handling comm is killed
+ if (auto* observer = dynamic_cast<kernel::actor::IoWaitanySimcall*>(simcall->observer_)) { // simcall is a wait_any?
+ const auto& ios = observer->get_ios();
+
+ for (auto* io : ios) {
+ io->unregister_simcall(simcall);
+
+ if (simcall->timeout_cb_) {
+ simcall->timeout_cb_->remove();
+ simcall->timeout_cb_ = nullptr;
+ }
+ }
+
+ if (not MC_is_active() && not MC_record_replay_is_active()) {
+ auto element = std::find(ios.begin(), ios.end(), this);
+ int rank = element != ios.end() ? static_cast<int>(std::distance(ios.begin(), element)) : -1;
+ observer->set_result(rank);
+ }
+ }
+
+ set_exception(simcall->issuer_);
+
+ simcall->issuer_->waiting_synchro_ = nullptr;
+ simcall->issuer_->simcall_answer();
+ }
+}
+
+void IoImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<IoImpl*>& ios, double timeout)
+{
+ if (timeout < 0.0) {
+ issuer->simcall_.timeout_cb_ = nullptr;
+ } else {
+ issuer->simcall_.timeout_cb_ = timer::Timer::set(s4u::Engine::get_clock() + timeout, [issuer, &ios]() {
+ issuer->simcall_.timeout_cb_ = nullptr;
+ for (auto* io : ios)
+ io->unregister_simcall(&issuer->simcall_);
+ // default result (-1) is set in actor::IoWaitanySimcall
+ issuer->simcall_answer();
+ });
}
- on_completion(this);
- SIMIX_io_finish(this);
+ for (auto* io : ios) {
+ /* associate this simcall to the the synchro */
+ io->simcalls_.push_back(&issuer->simcall_);
+
+ /* see if the synchro is already finished */
+ if (io->state_ != State::WAITING && io->state_ != State::RUNNING) {
+ io->finish();
+ break;
+ }
+ }
}
-/*************
- * Callbacks *
- *************/
-xbt::signal<void(IoImplPtr)> IoImpl::on_start;
-xbt::signal<void(IoImplPtr)> IoImpl::on_completion;
} // namespace activity
} // namespace kernel
