-/* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2022. 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 "src/kernel/activity/CommImpl.hpp"
+#include <simgrid/Exception.hpp>
+#include <simgrid/kernel/routing/NetPoint.hpp>
+#include <simgrid/modelchecker.h>
+#include <simgrid/s4u/Host.hpp>
-#include "simgrid/modelchecker.h"
+#include "src/kernel/activity/CommImpl.hpp"
+#include "src/kernel/activity/MailboxImpl.hpp"
+#include "src/kernel/context/Context.hpp"
+#include "src/kernel/resource/CpuImpl.hpp"
+#include "src/kernel/resource/LinkImpl.hpp"
+#include "src/kernel/resource/StandardLinkImpl.hpp"
#include "src/mc/mc_replay.hpp"
-#include "src/simix/smx_network_private.hpp"
-#include "src/surf/surf_interface.hpp"
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_network);
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ker_network, kernel, "Kernel network-related synchronization");
+
+XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox, double task_size,
+ double rate, unsigned char* src_buff, size_t src_buff_size,
+ bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
+ void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
+ void* data, double timeout)
+{
+ simgrid::kernel::activity::ActivityImplPtr comm = simcall_HANDLER_comm_isend(
+ simcall, src, mbox, task_size, rate, src_buff, src_buff_size, match_fun, nullptr, copy_data_fun, data, false);
+ simcall->mc_value_ = 0;
+ comm->wait_for(simcall->issuer_, timeout);
+}
+
+XBT_PRIVATE simgrid::kernel::activity::ActivityImplPtr simcall_HANDLER_comm_isend(
+ smx_simcall_t /*simcall*/, smx_actor_t src_proc, smx_mailbox_t mbox, double task_size, double rate,
+ unsigned char* src_buff, size_t src_buff_size,
+ bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
+ void (*clean_fun)(void*), // used to free the synchro in case of problem after a detached send
+ void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), // used to copy data if not default one
+ void* data, bool detached)
+{
+ XBT_DEBUG("send from mailbox %p", mbox);
+
+ /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
+ simgrid::kernel::activity::CommImplPtr this_comm(
+ new simgrid::kernel::activity::CommImpl(simgrid::kernel::activity::CommImpl::Type::SEND));
+
+ /* Look for communication synchro matching our needs. We also provide a description of
+ * ourself so that the other side also gets a chance of choosing if it wants to match with us.
+ *
+ * If it is not found then push our communication into the rendez-vous point */
+ simgrid::kernel::activity::CommImplPtr other_comm =
+ mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::RECEIVE, match_fun, data, this_comm,
+ /*done*/ false, /*remove_matching*/ true);
+
+ if (not other_comm) {
+ other_comm = std::move(this_comm);
+
+ if (mbox->is_permanent()) {
+ // this mailbox is for small messages, which have to be sent right now
+ other_comm->set_state(simgrid::kernel::activity::State::READY);
+ other_comm->dst_actor_ = mbox->get_permanent_receiver().get();
+ mbox->push_done(other_comm);
+ XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm.get());
+
+ } else {
+ mbox->push(other_comm);
+ }
+ } else {
+ XBT_DEBUG("Receive already pushed");
+
+ other_comm->set_state(simgrid::kernel::activity::State::READY);
+ }
+
+ if (detached) {
+ other_comm->detach();
+ other_comm->clean_fun = clean_fun;
+ } else {
+ other_comm->clean_fun = nullptr;
+ src_proc->activities_.emplace_back(other_comm);
+ }
+
+ /* Setup the communication synchro */
+ other_comm->src_actor_ = src_proc;
+ other_comm->src_data_ = data;
+ (*other_comm).set_src_buff(src_buff, src_buff_size).set_size(task_size).set_rate(rate);
+
+ other_comm->match_fun = match_fun;
+ other_comm->copy_data_fun = copy_data_fun;
+
+ if (MC_is_active() || MC_record_replay_is_active())
+ other_comm->set_state(simgrid::kernel::activity::State::RUNNING);
+ else
+ other_comm->start();
+
+ return (detached ? nullptr : other_comm);
+}
+
+XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
+ unsigned char* dst_buff, size_t* dst_buff_size,
+ bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
+ void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
+ void* data, double timeout, double rate)
+{
+ simgrid::kernel::activity::ActivityImplPtr comm = simcall_HANDLER_comm_irecv(
+ simcall, receiver, mbox, dst_buff, dst_buff_size, match_fun, copy_data_fun, data, rate);
+ simcall->mc_value_ = 0;
+ comm->wait_for(simcall->issuer_, timeout);
+}
+
+XBT_PRIVATE simgrid::kernel::activity::ActivityImplPtr
+simcall_HANDLER_comm_irecv(smx_simcall_t /*simcall*/, smx_actor_t receiver, smx_mailbox_t mbox, unsigned char* dst_buff,
+ size_t* dst_buff_size, bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
+ void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), void* data,
+ double rate)
+{
+ simgrid::kernel::activity::CommImplPtr this_synchro(
+ new simgrid::kernel::activity::CommImpl(simgrid::kernel::activity::CommImpl::Type::RECEIVE));
+ XBT_DEBUG("recv from mbox %p. this_synchro=%p", mbox, this_synchro.get());
+
+ simgrid::kernel::activity::CommImplPtr other_comm;
+ // communication already done, get it inside the list of completed comms
+ if (mbox->is_permanent() && mbox->has_some_done_comm()) {
+ XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
+ // find a match in the list of already received comms
+ other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
+ this_synchro, /*done*/ true,
+ /*remove_matching*/ true);
+ // if not found, assume the receiver came first, register it to the mailbox in the classical way
+ if (not other_comm) {
+ XBT_DEBUG("We have messages in the permanent receive list, but not the one we are looking for, pushing request "
+ "into list");
+ other_comm = std::move(this_synchro);
+ mbox->push(other_comm);
+ } else {
+ if (other_comm->surf_action_ && other_comm->get_remaining() < 1e-12) {
+ XBT_DEBUG("comm %p has been already sent, and is finished, destroy it", other_comm.get());
+ other_comm->set_state(simgrid::kernel::activity::State::DONE);
+ other_comm->set_mailbox(nullptr);
+ }
+ }
+ } else {
+ /* Prepare a comm describing us, so that it gets passed to the user-provided filter of other side */
+
+ /* Look for communication activity matching our needs. We also provide a description of
+ * ourself so that the other side also gets a chance of choosing if it wants to match with us.
+ *
+ * If it is not found then push our communication into the rendez-vous point */
+ other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
+ this_synchro, /*done*/ false,
+ /*remove_matching*/ true);
+
+ if (other_comm == nullptr) {
+ XBT_DEBUG("Receive pushed first (%zu comm enqueued so far)", mbox->size());
+ other_comm = std::move(this_synchro);
+ mbox->push(other_comm);
+ } else {
+ XBT_DEBUG("Match my %p with the existing %p", this_synchro.get(), other_comm.get());
+
+ other_comm->set_state(simgrid::kernel::activity::State::READY);
+ }
+ receiver->activities_.emplace_back(other_comm);
+ }
+
+ /* Setup communication synchro */
+ other_comm->dst_actor_ = receiver;
+ other_comm->dst_data_ = data;
+ other_comm->set_dst_buff(dst_buff, dst_buff_size);
+
+ if (rate > -1.0 && (other_comm->get_rate() < 0.0 || rate < other_comm->get_rate()))
+ other_comm->set_rate(rate);
+
+ other_comm->match_fun = match_fun;
+ other_comm->copy_data_fun = copy_data_fun;
+
+ if (MC_is_active() || MC_record_replay_is_active()) {
+ other_comm->set_state(simgrid::kernel::activity::State::RUNNING);
+ return other_comm;
+ }
+ other_comm->start();
+ return other_comm;
+}
+
+void simcall_HANDLER_comm_wait(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comm, double timeout)
+{
+ comm->wait_for(simcall->issuer_, timeout);
+}
+
+bool simcall_HANDLER_comm_test(smx_simcall_t, simgrid::kernel::activity::CommImpl* comm)
+{
+ return comm->test();
+}
+
+ssize_t simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count)
+{
+ std::vector<simgrid::kernel::activity::CommImpl*> comms_vec(comms, comms + count);
+ return simgrid::kernel::activity::CommImpl::test_any(simcall->issuer_, comms_vec);
+}
+
+void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count,
+ double timeout)
+{
+ std::vector<simgrid::kernel::activity::CommImpl*> comms_vec(comms, comms + count);
+ simgrid::kernel::activity::CommImpl::wait_any_for(simcall->issuer_, comms_vec, timeout);
+}
+
+/******************************************************************************/
+/* SIMIX_comm_copy_data callbacks */
+/******************************************************************************/
+// XBT_ATTRIB_DEPRECATED_v333
+void SIMIX_comm_set_copy_data_callback(void (*callback)(simgrid::kernel::activity::CommImpl*, void*, size_t))
+{
+ simgrid::kernel::activity::CommImpl::set_copy_data_callback(callback);
+}
+
+// XBT_ATTRIB_DEPRECATED_v333
+void SIMIX_comm_copy_buffer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
+{
+ simgrid::s4u::Comm::copy_buffer_callback(comm, buff, buff_size);
+}
+
+// XBT_ATTRIB_DEPRECATED_v333
+void SIMIX_comm_copy_pointer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
+{
+ simgrid::s4u::Comm::copy_pointer_callback(comm, buff, buff_size);
+}
+
+namespace simgrid {
+namespace kernel {
+namespace activity {
+xbt::signal<void(CommImpl const&)> CommImpl::on_start;
+xbt::signal<void(CommImpl const&)> CommImpl::on_completion;
+
+void (*CommImpl::copy_data_callback_)(CommImpl*, void*, size_t) = &s4u::Comm::copy_pointer_callback;
+
+void CommImpl::set_copy_data_callback(void (*callback)(CommImpl*, void*, size_t))
+{
+ copy_data_callback_ = callback;
+}
+
+CommImpl& CommImpl::set_size(double size)
+{
+ size_ = size;
+ return *this;
+}
+
+CommImpl& CommImpl::set_rate(double rate)
+{
+ rate_ = rate;
+ return *this;
+}
+CommImpl& CommImpl::set_mailbox(MailboxImpl* mbox)
+{
+ mbox_ = mbox;
+ return *this;
+}
+
+CommImpl& CommImpl::set_src_buff(unsigned char* buff, size_t size)
+{
+ src_buff_ = buff;
+ src_buff_size_ = size;
+ return *this;
+}
+
+CommImpl& CommImpl::set_dst_buff(unsigned char* buff, size_t* size)
+{
+ dst_buff_ = buff;
+ dst_buff_size_ = size;
+ return *this;
+}
+
+CommImpl& CommImpl::detach()
+{
+ detached_ = true;
+ return *this;
+}
-simgrid::kernel::activity::CommImpl::CommImpl(e_smx_comm_type_t _type) : type(_type)
+CommImpl::CommImpl(s4u::Host* from, s4u::Host* to, double bytes) : size_(bytes), detached_(true), from_(from), to_(to)
{
- state = SIMIX_WAITING;
- src_data = nullptr;
- dst_data = nullptr;
- XBT_DEBUG("Create comm activity %p", this);
+ set_state(State::READY);
}
-simgrid::kernel::activity::CommImpl::~CommImpl()
+CommImpl::~CommImpl()
{
- XBT_DEBUG("Really free communication %p", this);
+ XBT_DEBUG("Really free communication %p in state %s (detached = %d)", this, get_state_str(), detached_);
- cleanupSurf();
+ cleanup_surf();
- if (detached && state != SIMIX_DONE) {
+ if (detached_ && get_state() != State::DONE) {
/* the communication has failed and was detached:
* we have to free the buffer */
if (clean_fun)
- clean_fun(src_buff);
- src_buff = nullptr;
+ clean_fun(src_buff_);
+ src_buff_ = nullptr;
+ } else if (mbox_) {
+ mbox_->remove(this);
}
+}
+
+/** @brief Starts the simulation of a communication synchro. */
+CommImpl* CommImpl::start()
+{
+ /* If both the sender and the receiver are already there, start the communication */
+ if (get_state() == State::READY) {
+ from_ = from_ != nullptr ? from_ : src_actor_->get_host();
+ to_ = to_ != nullptr ? to_ : dst_actor_->get_host();
+ /* Getting the network_model from the origin host
+ * Valid while we have a single network model, otherwise we would need to change this function to first get the
+ * routes and later create the respective surf actions */
+ auto net_model = from_->get_netpoint()->get_englobing_zone()->get_network_model();
+
+ surf_action_ = net_model->communicate(from_, to_, size_, rate_);
+ surf_action_->set_activity(this);
+ surf_action_->set_category(get_tracing_category());
+ set_start_time(surf_action_->get_start_time());
+ set_state(State::RUNNING);
+ on_start(*this);
+
+ XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p; state: %s)", this, from_->get_cname(),
+ to_->get_cname(), surf_action_, get_state_str());
+
+ /* If a link is failed, detect it immediately */
+ if (surf_action_->get_state() == resource::Action::State::FAILED) {
+ XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", from_->get_cname(),
+ to_->get_cname());
+ set_state(State::LINK_FAILURE);
+ post();
- if (mbox)
- mbox->remove(this);
+ } else if ((src_actor_ != nullptr && src_actor_->is_suspended()) ||
+ (dst_actor_ != nullptr && dst_actor_->is_suspended())) {
+ /* If any of the actor is suspended, create the synchro but stop its execution,
+ it will be restarted when the sender actor resume */
+ if (src_actor_->is_suspended())
+ XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
+ "communication",
+ src_actor_->get_cname(), src_actor_->get_host()->get_cname());
+ else
+ XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
+ "communication",
+ dst_actor_->get_cname(), dst_actor_->get_host()->get_cname());
+
+ surf_action_->suspend();
+ }
+ }
+
+ return this;
}
-void simgrid::kernel::activity::CommImpl::suspend()
+std::vector<s4u::Link*> CommImpl::get_traversed_links() const
{
- /* FIXME: shall we suspend also the timeout synchro? */
- if (surf_comm)
- surf_comm->suspend();
- /* in the other case, the action will be suspended on creation, in SIMIX_comm_start() */
+ xbt_assert(get_state() != State::WAITING, "You cannot use %s() if your communication is not ready (%s)", __FUNCTION__,
+ get_state_str());
+ std::vector<s4u::Link*> vlinks;
+ XBT_ATTRIB_UNUSED double res = 0;
+ from_->route_to(to_, vlinks, &res);
+ return vlinks;
}
-void simgrid::kernel::activity::CommImpl::resume()
+/** @brief Copy the communication data from the sender's buffer to the receiver's one */
+void CommImpl::copy_data()
{
- /*FIXME: check what happen with the timeouts */
- if (surf_comm)
- surf_comm->resume();
- /* in the other case, the synchro were not really suspended yet, see SIMIX_comm_suspend() and SIMIX_comm_start() */
+ size_t buff_size = src_buff_size_;
+ /* If there is no data to copy then return */
+ if (not src_buff_ || not dst_buff_ || copied_)
+ return;
+
+ XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", this,
+ src_actor_ ? src_actor_->get_host()->get_cname() : "a finished actor", src_buff_,
+ dst_actor_ ? dst_actor_->get_host()->get_cname() : "a finished actor", dst_buff_, buff_size);
+
+ /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
+ if (dst_buff_size_) {
+ buff_size = std::min(buff_size, *dst_buff_size_);
+
+ /* Update the receiver's buffer size to the copied amount */
+ *dst_buff_size_ = buff_size;
+ }
+
+ if (buff_size > 0) {
+ if (copy_data_fun)
+ copy_data_fun(this, src_buff_, buff_size);
+ else
+ copy_data_callback_(this, src_buff_, buff_size);
+ }
+
+ /* Set the copied flag so we copy data only once */
+ /* (this function might be called from both communication ends) */
+ copied_ = true;
}
-void simgrid::kernel::activity::CommImpl::cancel()
+bool CommImpl::test()
{
- /* if the synchro is a waiting state means that it is still in a mbox */
- /* so remove from it and delete it */
- if (state == SIMIX_WAITING) {
- mbox->remove(this);
- state = SIMIX_CANCELED;
- } else if (not MC_is_active() /* when running the MC there are no surf actions */
- && not MC_record_replay_is_active() && (state == SIMIX_READY || state == SIMIX_RUNNING)) {
+ if ((MC_is_active() || MC_record_replay_is_active()) && src_actor_ && dst_actor_)
+ set_state(State::DONE);
+ return ActivityImpl::test();
+}
- surf_comm->cancel();
+void CommImpl::wait_for(actor::ActorImpl* issuer, double timeout)
+{
+ XBT_DEBUG("CommImpl::wait_for(%g), %p, state %s", timeout, this, get_state_str());
+
+ /* Associate this simcall to the wait synchro */
+ register_simcall(&issuer->simcall_);
+
+ if (MC_is_active() || MC_record_replay_is_active()) {
+ int idx = issuer->simcall_.mc_value_;
+ if (idx == 0) {
+ set_state(State::DONE);
+ } else {
+ /* If we reached this point, the wait simcall must have a timeout */
+ /* Otherwise it shouldn't be enabled and executed by the MC */
+ if (timeout < 0.0)
+ THROW_IMPOSSIBLE;
+ set_state(issuer == src_actor_ ? State::SRC_TIMEOUT : State::DST_TIMEOUT);
+ }
+ finish();
+ return;
+ }
+
+ /* If the synchro has already finish perform the error handling, */
+ /* otherwise set up a waiting timeout on the right side */
+ if (get_state() != State::WAITING && get_state() != State::RUNNING) {
+ finish();
+ } else { /* we need a sleep action (even when there is no timeout) to be notified of host failures */
+ resource::Action* sleep = issuer->get_host()->get_cpu()->sleep(timeout);
+ sleep->set_activity(this);
+
+ if (issuer == src_actor_)
+ src_timeout_ = sleep;
+ else
+ dst_timeout_ = sleep;
}
}
-/** @brief get the amount remaining from the communication */
-double simgrid::kernel::activity::CommImpl::remains()
+ssize_t CommImpl::test_any(const actor::ActorImpl* issuer, const std::vector<CommImpl*>& comms)
{
- if (state == SIMIX_RUNNING)
- return surf_comm->getRemains();
+ if (MC_is_active() || MC_record_replay_is_active()) {
+ int idx = issuer->simcall_.mc_value_;
+ xbt_assert(idx == -1 || comms[idx]->test());
+ return idx;
+ }
- /* FIXME: check what should be returned in the other cases */
- return 0;
+ for (std::size_t i = 0; i < comms.size(); ++i) {
+ if (comms[i]->test())
+ return i;
+ }
+ return -1;
}
-/** @brief This is part of the cleanup process, probably an internal command */
-void simgrid::kernel::activity::CommImpl::cleanupSurf()
+void CommImpl::wait_any_for(actor::ActorImpl* issuer, const std::vector<CommImpl*>& comms, double timeout)
+{
+ if (MC_is_active() || MC_record_replay_is_active()) {
+ xbt_assert(timeout <= 0.0, "Timeout not implemented for waitany in the model-checker");
+ int idx = issuer->simcall_.mc_value_;
+ auto* comm = comms[idx];
+ comm->simcalls_.push_back(&issuer->simcall_);
+ simcall_comm_waitany__set__result(&issuer->simcall_, idx);
+ comm->set_state(State::DONE);
+ comm->finish();
+ return;
+ }
+
+ if (timeout < 0.0) {
+ issuer->simcall_.timeout_cb_ = nullptr;
+ } else {
+ issuer->simcall_.timeout_cb_ = timer::Timer::set(s4u::Engine::get_clock() + timeout, [issuer, comms]() {
+ // FIXME: Vector `comms' is copied here. Use a reference once its lifetime is extended (i.e. when the simcall is
+ // modernized).
+ issuer->simcall_.timeout_cb_ = nullptr;
+ for (auto* comm : comms)
+ comm->unregister_simcall(&issuer->simcall_);
+ simcall_comm_waitany__set__result(&issuer->simcall_, -1);
+ issuer->simcall_answer();
+ });
+ }
+
+ for (auto* comm : comms) {
+ /* associate this simcall to the the synchro */
+ comm->simcalls_.push_back(&issuer->simcall_);
+
+ /* see if the synchro is already finished */
+ if (comm->get_state() != State::WAITING && comm->get_state() != State::RUNNING) {
+ comm->finish();
+ break;
+ }
+ }
+}
+
+void CommImpl::suspend()
+{
+ /* FIXME: shall we suspend also the timeout synchro? */
+ if (surf_action_)
+ surf_action_->suspend();
+ /* if not created yet, the action will be suspended on creation, in CommImpl::start() */
+}
+
+void CommImpl::resume()
{
- if (surf_comm) {
- surf_comm->unref();
- surf_comm = nullptr;
+ /*FIXME: check what happen with the timeouts */
+ if (surf_action_)
+ surf_action_->resume();
+ /* in the other case, the synchro were not really suspended yet, see CommImpl::suspend() and CommImpl::start() */
+}
+
+void CommImpl::cancel()
+{
+ /* if the synchro is a waiting state means that it is still in a mbox so remove from it and delete it */
+ if (get_state() == State::WAITING) {
+ if (not detached_) {
+ mbox_->remove(this);
+ set_state(State::CANCELED);
+ }
+ } else if (not MC_is_active() /* when running the MC there are no surf actions */
+ && not MC_record_replay_is_active() && (get_state() == State::READY || get_state() == State::RUNNING)) {
+ surf_action_->cancel();
}
+}
- if (src_timeout) {
- src_timeout->unref();
- src_timeout = nullptr;
+/** @brief This is part of the cleanup process, probably an internal command */
+void CommImpl::cleanup_surf()
+{
+ clean_action();
+
+ if (src_timeout_) {
+ src_timeout_->unref();
+ src_timeout_ = nullptr;
}
- if (dst_timeout) {
- dst_timeout->unref();
- dst_timeout = nullptr;
+ if (dst_timeout_) {
+ dst_timeout_->unref();
+ dst_timeout_ = nullptr;
}
}
-void simgrid::kernel::activity::CommImpl::post()
+void CommImpl::post()
{
+ on_completion(*this);
+
/* Update synchro state */
- if (src_timeout && src_timeout->getState() == simgrid::surf::Action::State::done)
- state = SIMIX_SRC_TIMEOUT;
- else if (dst_timeout && dst_timeout->getState() == simgrid::surf::Action::State::done)
- state = SIMIX_DST_TIMEOUT;
- else if (src_timeout && src_timeout->getState() == simgrid::surf::Action::State::failed)
- state = SIMIX_SRC_HOST_FAILURE;
- else if (dst_timeout && dst_timeout->getState() == simgrid::surf::Action::State::failed)
- state = SIMIX_DST_HOST_FAILURE;
- else if (surf_comm && surf_comm->getState() == simgrid::surf::Action::State::failed) {
- state = SIMIX_LINK_FAILURE;
+ if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FINISHED)
+ set_state(State::SRC_TIMEOUT);
+ else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FINISHED)
+ set_state(State::DST_TIMEOUT);
+ else if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FAILED)
+ set_state(State::SRC_HOST_FAILURE);
+ else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FAILED)
+ set_state(State::DST_HOST_FAILURE);
+ else if (surf_action_ && surf_action_->get_state() == resource::Action::State::FAILED) {
+ set_state(State::LINK_FAILURE);
} else
- state = SIMIX_DONE;
+ set_state(State::DONE);
- XBT_DEBUG("SIMIX_post_comm: comm %p, state %d, src_proc %p, dst_proc %p, detached: %d", this, (int)state, src_proc,
- dst_proc, detached);
+ XBT_DEBUG("CommImpl::post(): comm %p, state %s, src_proc %p, dst_proc %p, detached: %d", this, get_state_str(),
+ src_actor_.get(), dst_actor_.get(), detached_);
/* destroy the surf actions associated with the Simix communication */
- cleanupSurf();
+ cleanup_surf();
+
+ /* Answer all simcalls associated with the synchro */
+ finish();
+}
+void CommImpl::set_exception(actor::ActorImpl* issuer)
+{
+ switch (get_state()) {
+ case State::FAILED:
+ issuer->exception_ = std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
+ break;
+ case State::SRC_TIMEOUT:
+ issuer->exception_ =
+ std::make_exception_ptr(TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the sender"));
+ break;
+
+ case State::DST_TIMEOUT:
+ issuer->exception_ =
+ std::make_exception_ptr(TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the receiver"));
+ break;
+
+ case State::SRC_HOST_FAILURE:
+ if (issuer == src_actor_)
+ issuer->context_->set_wannadie();
+ else {
+ set_state(State::FAILED);
+ issuer->exception_ = std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
+ }
+ break;
+
+ case State::DST_HOST_FAILURE:
+ if (issuer == dst_actor_)
+ issuer->context_->set_wannadie();
+ else {
+ set_state(State::FAILED);
+ issuer->exception_ = std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
+ }
+ break;
- /* if there are simcalls associated with the synchro, then answer them */
- if (not simcalls.empty()) {
- SIMIX_comm_finish(this);
+ case State::LINK_FAILURE:
+ XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
+ "detached:%d",
+ this, src_actor_ ? src_actor_->get_host()->get_cname() : nullptr,
+ dst_actor_ ? dst_actor_->get_host()->get_cname() : nullptr, issuer->get_cname(), issuer, detached_);
+ if (src_actor_ == issuer) {
+ XBT_DEBUG("I'm source");
+ } else if (dst_actor_ == issuer) {
+ XBT_DEBUG("I'm dest");
+ } else {
+ XBT_DEBUG("I'm neither source nor dest");
+ }
+ set_state(State::FAILED);
+ issuer->throw_exception(std::make_exception_ptr(NetworkFailureException(XBT_THROW_POINT, "Link failure")));
+ break;
+
+ case State::CANCELED:
+ if (issuer == dst_actor_)
+ issuer->exception_ =
+ std::make_exception_ptr(CancelException(XBT_THROW_POINT, "Communication canceled by the sender"));
+ else
+ issuer->exception_ =
+ std::make_exception_ptr(CancelException(XBT_THROW_POINT, "Communication canceled by the receiver"));
+ break;
+
+ default:
+ xbt_assert(get_state() == State::DONE, "Internal error in CommImpl::finish(): unexpected synchro state %s",
+ get_state_str());
}
}
+
+void CommImpl::finish()
+{
+ XBT_DEBUG("CommImpl::finish() in state %s", get_state_str());
+ /* If the synchro is still in a rendez-vous point then remove from it */
+ if (mbox_)
+ mbox_->remove(this);
+
+ if (get_state() == State::DONE)
+ copy_data();
+
+ 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 actor handling comm is killed
+ if (simcall->call_ == simix::Simcall::COMM_WAITANY) {
+ CommImpl** comms = simcall_comm_waitany__get__comms(simcall);
+ size_t count = simcall_comm_waitany__get__count(simcall);
+ for (size_t i = 0; i < count; i++)
+ comms[i]->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(comms, comms + count, this);
+ ssize_t rank = (element != comms + count) ? element - comms : -1;
+ simcall_comm_waitany__set__result(simcall, rank);
+ }
+ }
+
+ /* Check out for errors */
+
+ if (not simcall->issuer_->get_host()->is_on()) {
+ simcall->issuer_->context_->set_wannadie();
+ } else {
+ set_exception(simcall->issuer_);
+ simcall->issuer_->simcall_answer();
+ }
+ /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
+ if (simcall->issuer_->exception_ &&
+ (simcall->call_ == simix::Simcall::COMM_WAITANY || simcall->call_ == simix::Simcall::COMM_TESTANY)) {
+ // First retrieve the rank of our failing synchro
+ CommImpl** comms;
+ size_t count;
+ if (simcall->call_ == simix::Simcall::COMM_WAITANY) {
+ comms = simcall_comm_waitany__get__comms(simcall);
+ count = simcall_comm_waitany__get__count(simcall);
+ } else {
+ /* simcall->call_ == simix::Simcall::COMM_TESTANY */
+ comms = simcall_comm_testany__get__comms(simcall);
+ count = simcall_comm_testany__get__count(simcall);
+ }
+ auto element = std::find(comms, comms + count, this);
+ ssize_t rank = (element != comms + count) ? element - comms : -1;
+ // In order to modify the exception we have to rethrow it:
+ try {
+ std::rethrow_exception(simcall->issuer_->exception_);
+ } catch (Exception& e) {
+ e.set_value(rank);
+ }
+ }
+
+ simcall->issuer_->waiting_synchro_ = nullptr;
+ simcall->issuer_->activities_.remove(this);
+ if (detached_) {
+ if (simcall->issuer_ != dst_actor_ && dst_actor_ != nullptr)
+ dst_actor_->activities_.remove(this);
+ if (simcall->issuer_ != src_actor_ && src_actor_ != nullptr)
+ src_actor_->activities_.remove(this);
+ }
+ }
+}
+
+} // namespace activity
+} // namespace kernel
+} // namespace simgrid
