X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8749f7dec702f8afc9a24ac2770f2e2a47dfec62..60037b3f9ba9d856ccebf7a2211b51b82f4a557a:/src/kernel/activity/IoImpl.cpp diff --git a/src/kernel/activity/IoImpl.cpp b/src/kernel/activity/IoImpl.cpp index abcc7f8585..8472157856 100644 --- a/src/kernel/activity/IoImpl.cpp +++ b/src/kernel/activity/IoImpl.cpp @@ -1,75 +1,172 @@ -/* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2007-2019. 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/IoImpl.hpp" +#include "mc/mc.h" +#include "simgrid/Exception.hpp" #include "simgrid/kernel/resource/Action.hpp" -#include "src/simix/smx_io_private.hpp" +#include "simgrid/s4u/Host.hpp" +#include "src/kernel/resource/DiskImpl.hpp" +#include "src/mc/mc_replay.hpp" +#include "src/simix/smx_private.hpp" +#include "src/surf/StorageImpl.hpp" +#include "src/surf/cpu_interface.hpp" -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_io); +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)"); -simgrid::kernel::activity::IoImpl::IoImpl(std::string name, resource::Action* surf_action, s4u::Storage* storage) - : ActivityImpl(name), storage_(storage), surf_action_(surf_action) +void simcall_HANDLER_io_wait(smx_simcall_t simcall, simgrid::kernel::activity::IoImpl* synchro, double timeout) { - this->state_ = SIMIX_RUNNING; + XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state_); + + /* Associate this simcall to the synchro */ + synchro->register_simcall(simcall); - surf_action_->set_data(this); + if (MC_is_active() || MC_record_replay_is_active()) { + int idx = SIMCALL_GET_MC_VALUE(*simcall); + if (idx == 0) { + synchro->state_ = simgrid::kernel::activity::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; + synchro->state_ = simgrid::kernel::activity::State::TIMEOUT; + } + synchro->finish(); + } - XBT_DEBUG("Create exec %p", this); + /* If the synchro is already finished then perform the error handling */ + if (synchro->state_ != simgrid::kernel::activity::State::RUNNING) + synchro->finish(); + else { + /* we need a sleep action (even when there is no timeout) to be notified of host failures */ + if (synchro->get_disk() != nullptr) + synchro->timeout_detector_ = synchro->get_disk()->get_host()->pimpl_cpu->sleep(timeout); + else + synchro->timeout_detector_ = + simgrid::s4u::Host::by_name(synchro->get_storage()->get_host())->pimpl_cpu->sleep(timeout); + synchro->timeout_detector_->set_activity(synchro); + } } -simgrid::kernel::activity::IoImpl::~IoImpl() +void simcall_HANDLER_io_test(smx_simcall_t simcall, simgrid::kernel::activity::IoImpl* synchro) { - if (surf_action_ != nullptr) - surf_action_->unref(); - XBT_DEBUG("Destroy exec %p", this); + bool res = (synchro->state_ != simgrid::kernel::activity::State::WAITING && + synchro->state_ != simgrid::kernel::activity::State::RUNNING); + if (res) { + synchro->simcalls_.push_back(simcall); + synchro->finish(); + } else { + simcall->issuer_->simcall_answer(); + } + simcall_io_test__set__result(simcall, res); } -void simgrid::kernel::activity::IoImpl::cancel() +namespace simgrid { +namespace kernel { +namespace activity { + +IoImpl& IoImpl::set_type(s4u::Io::OpType type) { - XBT_VERB("This exec %p is canceled", this); - if (surf_action_ != nullptr) - surf_action_->cancel(); + type_ = type; + return *this; } -void simgrid::kernel::activity::IoImpl::suspend() +IoImpl& IoImpl::set_size(sg_size_t size) { - if (surf_action_ != nullptr) - surf_action_->suspend(); + size_ = size; + return *this; } -void simgrid::kernel::activity::IoImpl::resume() +IoImpl& IoImpl::set_disk(resource::DiskImpl* disk) { - if (surf_action_ != nullptr) - surf_action_->resume(); + disk_ = disk; + return *this; } -double simgrid::kernel::activity::IoImpl::get_remaining() +IoImpl& IoImpl::set_storage(resource::StorageImpl* storage) { - return surf_action_ ? surf_action_->get_remains() : 0; + storage_ = storage; + return *this; +} + +IoImpl* IoImpl::start() +{ + state_ = State::RUNNING; + if (storage_) + surf_action_ = storage_->io_start(size_, type_); + else + surf_action_ = disk_->io_start(size_, type_); + surf_action_->set_activity(this); + + XBT_DEBUG("Create IO synchro %p %s", this, get_cname()); + IoImpl::on_start(*this); + + return this; } -void simgrid::kernel::activity::IoImpl::post() +void IoImpl::post() { performed_ioops_ = surf_action_->get_cost(); - switch (surf_action_->get_state()) { - case simgrid::kernel::resource::Action::State::FAILED: - state_ = SIMIX_FAILED; - break; - case simgrid::kernel::resource::Action::State::FINISHED: - state_ = SIMIX_DONE; - break; - default: - THROW_IMPOSSIBLE; - break; + if (surf_action_->get_state() == resource::Action::State::FAILED) { + if ((storage_ && not storage_->is_on()) || (disk_ && not disk_->is_on())) + state_ = State::FAILED; + else + state_ = State::CANCELED; + } else if (surf_action_->get_state() == resource::Action::State::FINISHED) { + state_ = State::DONE; + } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) { + state_ = State::TIMEOUT; } - on_completion(this); - SIMIX_io_finish(this); + if (timeout_detector_) { + timeout_detector_->unref(); + timeout_detector_ = nullptr; + } + + on_completion(*this); + + /* Answer all simcalls associated with the synchro */ + finish(); +} + +void IoImpl::finish() +{ + while (not simcalls_.empty()) { + smx_simcall_t simcall = simcalls_.front(); + simcalls_.pop_front(); + switch (state_) { + case State::DONE: + /* do nothing, synchro done */ + break; + case State::FAILED: + simcall->issuer_->context_->iwannadie = true; + simcall->issuer_->exception_ = + std::make_exception_ptr(StorageFailureException(XBT_THROW_POINT, "Storage failed")); + break; + case State::CANCELED: + simcall->issuer_->exception_ = std::make_exception_ptr(CancelException(XBT_THROW_POINT, "I/O Canceled")); + break; + case State::TIMEOUT: + XBT_DEBUG("IoImpl::finish(): execution timeouted"); + simcall->issuer_->exception_ = std::make_exception_ptr(simgrid::TimeoutException(XBT_THROW_POINT, "Timeouted")); + break; + default: + xbt_die("Internal error in IoImpl::finish(): unexpected synchro state %d", static_cast(state_)); + } + + simcall->issuer_->waiting_synchro = nullptr; + simcall->issuer_->simcall_answer(); + } } + /************* * Callbacks * *************/ -simgrid::xbt::signal simgrid::kernel::activity::IoImpl::on_creation; -simgrid::xbt::signal simgrid::kernel::activity::IoImpl::on_completion; +xbt::signal IoImpl::on_start; +xbt::signal IoImpl::on_completion; + +} // namespace activity +} // namespace kernel +} // namespace simgrid