-/* Copyright (c) 2006-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2006-2021. 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 "xbt/log.h"
+#include "simgrid/Exception.hpp"
+#include "simgrid/exec.h"
#include "simgrid/s4u/Actor.hpp"
#include "simgrid/s4u/Exec.hpp"
+#include "simgrid/s4u/Host.hpp"
#include "src/kernel/activity/ExecImpl.hpp"
+#include "src/kernel/actor/ActorImpl.hpp"
+#include "src/kernel/actor/SimcallObserver.hpp"
+#include "xbt/log.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_exec, s4u_activity, "S4U asynchronous executions");
namespace simgrid {
namespace s4u {
+xbt::signal<void(Exec const&)> Exec::on_start;
+xbt::signal<void(Exec const&)> Exec::on_completion;
+
+Exec::Exec(kernel::activity::ExecImplPtr pimpl)
+{
+ pimpl_ = pimpl;
+}
+
+void Exec::complete(Activity::State state)
+{
+ Activity::complete(state);
+ on_completion(*this);
+}
+
+ExecPtr Exec::init()
+{
+ auto pimpl = kernel::activity::ExecImplPtr(new kernel::activity::ExecImpl());
+ Host::on_state_change.connect([pimpl](s4u::Host const& h) {
+ if (not h.is_on() && pimpl->state_ == kernel::activity::State::RUNNING &&
+ std::find(pimpl->get_hosts().begin(), pimpl->get_hosts().end(), &h) != pimpl->get_hosts().end()) {
+ pimpl->state_ = kernel::activity::State::FAILED;
+ pimpl->post();
+ }
+ });
+ return ExecPtr(pimpl->get_iface());
+}
-Activity* Exec::start()
+Exec* Exec::start()
{
- pimpl_ = simcall_execution_start(nullptr, flops_amount_, 1 / priority_, 0., host_);
- boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->setBound(bound_);
- state_ = State::started;
+ kernel::actor::simcall([this] {
+ (*boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_))
+ .set_name(get_name())
+ .set_tracing_category(get_tracing_category())
+ .start();
+ });
+
+ if (suspended_)
+ pimpl_->suspend();
+
+ state_ = State::STARTED;
+ on_start(*this);
return this;
}
-Activity* Exec::wait()
+ssize_t Exec::wait_any_for(const std::vector<ExecPtr>& execs, double timeout)
+{
+ std::vector<kernel::activity::ExecImpl*> rexecs(execs.size());
+ std::transform(begin(execs), end(execs), begin(rexecs),
+ [](const ExecPtr& exec) { return static_cast<kernel::activity::ExecImpl*>(exec->pimpl_.get()); });
+
+ kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
+ kernel::actor::ExecutionWaitanySimcall observer{issuer, rexecs, timeout};
+ ssize_t changed_pos = kernel::actor::simcall_blocking(
+ [&observer] {
+ kernel::activity::ExecImpl::wait_any_for(observer.get_issuer(), observer.get_execs(), observer.get_timeout());
+ },
+ &observer);
+ if (changed_pos != -1)
+ execs.at(changed_pos)->complete(State::FINISHED);
+ return changed_pos;
+}
+
+/** @brief change the execution bound
+ * This means changing the maximal amount of flops per second that it may consume, regardless of what the host may
+ * deliver. Currently, this cannot be changed once the exec started.
+ */
+ExecPtr Exec::set_bound(double bound)
{
- simcall_execution_wait(pimpl_);
- state_ = State::finished;
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the bound of an exec after its start");
+ kernel::actor::simcall(
+ [this, bound] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bound(bound); });
return this;
}
-Activity* Exec::wait(double timeout)
+/** @brief Change the execution priority, don't you think?
+ *
+ * An execution with twice the priority will get twice the amount of flops when the resource is shared.
+ * The default priority is 1.
+ *
+ * Currently, this cannot be changed once the exec started. */
+ExecPtr Exec::set_priority(double priority)
{
- THROW_UNIMPLEMENTED;
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the priority of an exec after its start");
+ kernel::actor::simcall([this, priority] {
+ boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_sharing_penalty(1. / priority);
+ });
return this;
}
-bool Exec::test()
+ExecPtr Exec::set_flops_amount(double flops_amount)
{
- xbt_assert(state_ == State::inited || state_ == State::started || state_ == State::finished);
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the flop_amount of an exec after its start");
+ kernel::actor::simcall([this, flops_amount] {
+ boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amount(flops_amount);
+ });
+ Activity::set_remaining(flops_amount);
+ return this;
+}
- if (state_ == State::finished)
- return true;
+ExecPtr Exec::set_flops_amounts(const std::vector<double>& flops_amounts)
+{
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the flops_amounts of an exec after its start");
+ kernel::actor::simcall([this, flops_amounts] {
+ boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_flops_amounts(flops_amounts);
+ });
+ parallel_ = true;
+ return this;
+}
- if (state_ == State::inited)
- this->start();
+ExecPtr Exec::set_bytes_amounts(const std::vector<double>& bytes_amounts)
+{
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the bytes_amounts of an exec after its start");
+ kernel::actor::simcall([this, bytes_amounts] {
+ boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_bytes_amounts(bytes_amounts);
+ });
+ parallel_ = true;
+ return this;
+}
- if (simcall_execution_test(pimpl_)) {
- state_ = State::finished;
- return true;
- }
+/** @brief Retrieve the host on which this activity takes place.
+ * If it runs on more than one host, only the first host is returned.
+ */
+Host* Exec::get_host() const
+{
+ return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host();
+}
+unsigned int Exec::get_host_number() const
+{
+ return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_host_number();
+}
- return false;
+double Exec::get_start_time() const
+{
+ return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_start_time();
}
-ExecPtr Exec::setPriority(double priority)
+double Exec::get_finish_time() const
{
- xbt_assert(state_ == State::inited, "Cannot change the priority of an exec after its start");
- priority_ = priority;
- return this;
+ return static_cast<kernel::activity::ExecImpl*>(pimpl_.get())->get_finish_time();
}
-ExecPtr Exec::setBound(double bound)
+/** @brief Change the host on which this activity takes place.
+ *
+ * The activity cannot be terminated already (but it may be started). */
+ExecPtr Exec::set_host(Host* host)
{
- xbt_assert(state_ == State::inited, "Cannot change the bound of an exec after its start");
- bound_ = bound;
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING || state_ == State::STARTED,
+ "Cannot change the host of an exec once it's done (state: %s)", to_c_str(state_));
+
+ if (state_ == State::STARTED)
+ boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->migrate(host);
+
+ kernel::actor::simcall(
+ [this, host] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_host(host); });
+
+ if (state_ == State::STARTING)
+ // Setting the host may allow to start the activity, let's try
+ vetoable_start();
+
return this;
}
-ExecPtr Exec::setHost(Host* host)
+ExecPtr Exec::set_hosts(const std::vector<Host*>& hosts)
{
- xbt_assert(state_ == State::inited || state_ == State::started,
- "Cannot change the host of an exec once it's done (state: %d)", (int)state_);
- if (state_ == State::started)
- boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->migrate(host);
- host_ = host;
+ xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+ "Cannot change the hosts of an exec once it's done (state: %s)", to_c_str(state_));
+
+ kernel::actor::simcall(
+ [this, hosts] { boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->set_hosts(hosts); });
+ parallel_ = true;
+
+ // Setting the host may allow to start the activity, let's try
+ if (state_ == State::STARTING)
+ vetoable_start();
+
return this;
}
-double Exec::get_remaining()
+double Exec::get_cost() const
{
- return simgrid::simix::kernelImmediate(
- [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->remains(); });
+ return (pimpl_->surf_action_ == nullptr) ? -1 : pimpl_->surf_action_->get_cost();
}
-double Exec::getRemainingRatio()
+
+double Exec::get_remaining() const
{
- return simgrid::simix::kernelImmediate(
- [this]() { return boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_)->remainingRatio(); });
+ if (is_parallel()) {
+ XBT_WARN("Calling get_remaining() on a parallel execution is not allowed. Call get_remaining_ratio() instead.");
+ return get_remaining_ratio();
+ } else
+ return kernel::actor::simcall(
+ [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_remaining(); });
}
-void intrusive_ptr_release(simgrid::s4u::Exec* e)
+/** @brief Returns the ratio of elements that are still to do
+ *
+ * The returned value is between 0 (completely done) and 1 (nothing done yet).
+ */
+double Exec::get_remaining_ratio() const
{
- if (e->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
- std::atomic_thread_fence(std::memory_order_acquire);
- delete e;
- }
+ if (is_parallel())
+ return kernel::actor::simcall(
+ [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_par_remaining_ratio(); });
+ else
+ return kernel::actor::simcall(
+ [this]() { return boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_seq_remaining_ratio(); });
}
-void intrusive_ptr_add_ref(simgrid::s4u::Exec* e)
+bool Exec::is_assigned() const
{
- e->refcount_.fetch_add(1, std::memory_order_relaxed);
+ return not boost::static_pointer_cast<kernel::activity::ExecImpl>(pimpl_)->get_hosts().empty();
}
} // namespace s4u
} // namespace simgrid
+
+/* **************************** Public C interface *************************** */
+void sg_exec_set_bound(sg_exec_t exec, double bound)
+{
+ exec->set_bound(bound);
+}
+
+const char* sg_exec_get_name(const_sg_exec_t exec)
+{
+ return exec->get_cname();
+}
+
+void sg_exec_set_name(sg_exec_t exec, const char* name)
+{
+ exec->set_name(name);
+}
+
+void sg_exec_set_host(sg_exec_t exec, sg_host_t new_host)
+{
+ exec->set_host(new_host);
+}
+
+double sg_exec_get_remaining(const_sg_exec_t exec)
+{
+ return exec->get_remaining();
+}
+
+double sg_exec_get_remaining_ratio(const_sg_exec_t exec)
+{
+ return exec->get_remaining_ratio();
+}
+
+void sg_exec_start(sg_exec_t exec)
+{
+ exec->vetoable_start();
+}
+
+void sg_exec_cancel(sg_exec_t exec)
+{
+ exec->cancel();
+ exec->unref();
+}
+
+int sg_exec_test(sg_exec_t exec)
+{
+ bool finished = exec->test();
+ if (finished)
+ exec->unref();
+ return finished;
+}
+
+sg_error_t sg_exec_wait(sg_exec_t exec)
+{
+ return sg_exec_wait_for(exec, -1.0);
+}
+
+sg_error_t sg_exec_wait_for(sg_exec_t exec, double timeout)
+{
+ sg_error_t status = SG_OK;
+
+ simgrid::s4u::ExecPtr s4u_exec(exec, false);
+ try {
+ s4u_exec->wait_for(timeout);
+ } catch (const simgrid::TimeoutException&) {
+ s4u_exec->add_ref(); // the wait_for timeouted, keep the exec alive
+ status = SG_ERROR_TIMEOUT;
+ } catch (const simgrid::CancelException&) {
+ status = SG_ERROR_CANCELED;
+ } catch (const simgrid::HostFailureException&) {
+ status = SG_ERROR_HOST;
+ }
+ return status;
+}
+
+ssize_t sg_exec_wait_any(sg_exec_t* execs, size_t count)
+{
+ return sg_exec_wait_any_for(execs, count, -1.0);
+}
+
+ssize_t sg_exec_wait_any_for(sg_exec_t* execs, size_t count, double timeout)
+{
+ std::vector<simgrid::s4u::ExecPtr> s4u_execs;
+ for (size_t i = 0; i < count; i++)
+ s4u_execs.emplace_back(execs[i], false);
+
+ ssize_t pos = simgrid::s4u::Exec::wait_any_for(s4u_execs, timeout);
+ for (size_t i = 0; i < count; i++) {
+ if (pos != -1 && static_cast<size_t>(pos) != i)
+ s4u_execs[i]->add_ref();
+ }
+ return pos;
+}
