src/simix/smx_host.cpp

   1 /* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include "mc/mc.h"
   7 #include "simgrid/Exception.hpp"
   8 #include "smx_private.hpp"
   9 #include "src/kernel/activity/CommImpl.hpp"
  10 #include "src/kernel/activity/ExecImpl.hpp"
  11 #include "src/mc/mc_replay.hpp"
  12 #include "src/plugins/vm/VirtualMachineImpl.hpp"
  13 #include "src/simix/smx_host_private.hpp"
  14
  15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix, "SIMIX hosts");
  16
  17 /* needs to be public and without simcall for exceptions and logging events */
  18 const char* sg_host_self_get_name()
  19 {
  20   sg_host_t host = sg_host_self();
  21   if (host == nullptr || SIMIX_process_self() == simix_global->maestro_process)
  22     return "";
  23
  24   return host->get_cname();
  25 }
  26
  27 simgrid::kernel::activity::ExecImplPtr SIMIX_execution_start(std::string name, std::string category,
  28                                                              double flops_amount, double priority, double bound,
  29                                                              sg_host_t host)
  30 {
  31   /* set surf's action */
  32   simgrid::kernel::resource::Action* surf_action = nullptr;
  33   if (not MC_is_active() && not MC_record_replay_is_active()) {
  34     surf_action = host->pimpl_cpu->execution_start(flops_amount);
  35     surf_action->set_priority(priority);
  36     if (bound > 0)
  37       surf_action->set_bound(bound);
  38   }
  39
  40   simgrid::kernel::activity::ExecImplPtr exec = simgrid::kernel::activity::ExecImplPtr(
  41       new simgrid::kernel::activity::ExecImpl(name, surf_action, /*timeout_detector*/ nullptr, host));
  42
  43   exec->set_category(category);
  44   XBT_DEBUG("Create execute synchro %p: %s", exec.get(), exec->name_.c_str());
  45   simgrid::kernel::activity::ExecImpl::on_creation(exec);
  46
  47   return exec;
  48 }
  49
  50 simgrid::kernel::activity::ExecImplPtr SIMIX_execution_parallel_start(std::string name, int host_nb,
  51                                                                       sg_host_t* host_list, double* flops_amount,
  52                                                                       double* bytes_amount, double rate, double timeout)
  53 {
  54
  55   /* Check that we are not mixing VMs and PMs in the parallel task */
  56   bool is_a_vm = (nullptr != dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[0]));
  57   for (int i = 1; i < host_nb; i++) {
  58     bool tmp_is_a_vm = (nullptr != dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[i]));
  59     xbt_assert(is_a_vm == tmp_is_a_vm, "parallel_execute: mixing VMs and PMs is not supported (yet).");
  60   }
  61
  62   /* set surf's synchro */
  63   simgrid::kernel::resource::Action* surf_action      = nullptr;
  64   simgrid::kernel::resource::Action* timeout_detector = nullptr;
  65   if (not MC_is_active() && not MC_record_replay_is_active()) {
  66     sg_host_t* host_list_cpy = new sg_host_t[host_nb];
  67     std::copy_n(host_list, host_nb, host_list_cpy);
  68     surf_action = surf_host_model->execute_parallel(host_nb, host_list_cpy, flops_amount, bytes_amount, rate);
  69     if (timeout > 0) {
  70       timeout_detector = host_list[0]->pimpl_cpu->sleep(timeout);
  71     }
  72   }
  73
  74   simgrid::kernel::activity::ExecImplPtr exec = simgrid::kernel::activity::ExecImplPtr(
  75       new simgrid::kernel::activity::ExecImpl(name, surf_action, timeout_detector, nullptr));
  76
  77   XBT_DEBUG("Create parallel execute synchro %p", exec.get());
  78
  79   return exec;
  80 }
  81
  82 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, smx_activity_t synchro)
  83 {
  84   XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro.get(), (int)synchro->state_);
  85
  86   /* Associate this simcall to the synchro */
  87   synchro->simcalls_.push_back(simcall);
  88   simcall->issuer->waiting_synchro = synchro;
  89
  90   /* set surf's synchro */
  91   if (MC_is_active() || MC_record_replay_is_active()) {
  92     synchro->state_ = SIMIX_DONE;
  93     SIMIX_execution_finish(synchro);
  94     return;
  95   }
  96
  97   /* If the synchro is already finished then perform the error handling */
  98   if (synchro->state_ != SIMIX_RUNNING)
  99     SIMIX_execution_finish(synchro);
 100 }
 101
 102 void simcall_HANDLER_execution_test(smx_simcall_t simcall, smx_activity_t synchro)
 103 {
 104   int res = (synchro->state_ != SIMIX_WAITING && synchro->state_ != SIMIX_RUNNING);
 105   if (res) {
 106     synchro->simcalls_.push_back(simcall);
 107     SIMIX_execution_finish(synchro);
 108   } else {
 109     SIMIX_simcall_answer(simcall);
 110   }
 111   simcall_execution_test__set__result(simcall, res);
 112 }
 113
 114 void SIMIX_execution_finish(smx_activity_t synchro)
 115 {
 116   simgrid::kernel::activity::ExecImplPtr exec =
 117       boost::static_pointer_cast<simgrid::kernel::activity::ExecImpl>(synchro);
 118
 119   while (not synchro->simcalls_.empty()) {
 120     smx_simcall_t simcall = synchro->simcalls_.front();
 121     synchro->simcalls_.pop_front();
 122     switch (exec->state_) {
 123
 124       case SIMIX_DONE:
 125         /* do nothing, synchro done */
 126         XBT_DEBUG("SIMIX_execution_finished: execution successful");
 127         break;
 128
 129       case SIMIX_FAILED:
 130         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", simcall->issuer->host_->get_cname());
 131         simcall->issuer->context_->iwannadie = 1;
 132         simcall->issuer->exception =
 133             std::make_exception_ptr(simgrid::HostFailureException(XBT_THROW_POINT, "Host failed"));
 134         break;
 135
 136       case SIMIX_CANCELED:
 137         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
 138         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 139         break;
 140
 141       case SIMIX_TIMEOUT:
 142         XBT_DEBUG("SIMIX_execution_finished: execution timeouted");
 143         simcall->issuer->exception = std::make_exception_ptr(simgrid::TimeoutError(XBT_THROW_POINT, "Timeouted"));
 144         break;
 145
 146       default:
 147         xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d", (int)exec->state_);
 148     }
 149     /* Fail the process if the host is down */
 150     if (simcall->issuer->host_->is_off())
 151       simcall->issuer->context_->iwannadie = 1;
 152
 153     simcall->issuer->waiting_synchro = nullptr;
 154     simcall_execution_wait__set__result(simcall, exec->state_);
 155     SIMIX_simcall_answer(simcall);
 156   }
 157 }
 158
 159 void SIMIX_set_category(smx_activity_t synchro, std::string category)
 160 {
 161   if (synchro->state_ != SIMIX_RUNNING)
 162     return;
 163
 164   simgrid::kernel::activity::ExecImplPtr exec =
 165       boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(synchro);
 166   if (exec != nullptr) {
 167     exec->surf_action_->set_category(category);
 168     return;
 169   }
 170
 171   simgrid::kernel::activity::CommImplPtr comm =
 172       boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
 173   if (comm != nullptr) {
 174     comm->surfAction_->set_category(category);
 175   }
 176 }