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Pass large parameter by address.
[simgrid.git] / src / mc / mc_state.cpp
index acb6bc2..6f5e47b 100644 (file)
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008-2019. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2008-2020. 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. */
 
 using simgrid::mc::remote;
 
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc, "Logging specific to MC (state)");
-
 namespace simgrid {
 namespace mc {
 
 State::State(unsigned long state_number) : num_(state_number)
 {
-  this->internal_comm.clear();
-  std::memset(&this->internal_req, 0, sizeof(this->internal_req));
-  std::memset(&this->executed_req_, 0, sizeof(this->executed_req_));
+  this->internal_comm_.clear();
 
   actor_states_.resize(MC_smx_get_maxpid());
   /* Stateful model checking */
   if ((_sg_mc_checkpoint > 0 && (state_number % _sg_mc_checkpoint == 0)) || _sg_mc_termination) {
-    system_state = std::make_shared<simgrid::mc::Snapshot>(num_);
+    system_state_ = std::make_shared<simgrid::mc::Snapshot>(num_);
     if (_sg_mc_comms_determinism || _sg_mc_send_determinism) {
       MC_state_copy_incomplete_communications_pattern(this);
       MC_state_copy_index_communications_pattern(this);
@@ -60,7 +56,7 @@ Transition State::get_transition() const
  * Things can get muddled with the WAITANY and TESTANY simcalls, that are rewritten on the fly to a bunch of WAIT
  * (resp TEST) transitions using the transition.argument field to remember what was the last returned sub-transition.
  */
-static inline smx_simcall_t MC_state_get_request_for_process(simgrid::mc::State* state, smx_actor_t actor)
+static inline smx_simcall_t MC_state_choose_request_for_process(simgrid::mc::State* state, smx_actor_t actor)
 {
   /* reset the outgoing transition */
   simgrid::mc::ActorState* procstate   = &state->actor_states_[actor->get_pid()];
@@ -116,14 +112,14 @@ static inline smx_simcall_t MC_state_get_request_for_process(simgrid::mc::State*
           remote(static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(&actor->simcall)));
       simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> temp_act;
       mc_model_checker->process().read(temp_act, remote_act);
-      simgrid::kernel::activity::CommImpl* act = temp_act.get_buffer();
+      const simgrid::kernel::activity::CommImpl* act = temp_act.get_buffer();
       if (act->src_actor_.get() && act->dst_actor_.get())
-        state->transition_.argument_ = 0;
+        state->transition_.argument_ = 0; // OK
       else if (act->src_actor_.get() == nullptr && act->type_ == simgrid::kernel::activity::CommImpl::Type::READY &&
                act->detached())
-        state->transition_.argument_ = 0;
+        state->transition_.argument_ = 0; // OK
       else
-        state->transition_.argument_ = -1;
+        state->transition_.argument_ = -1; // timeout
       procstate->set_done();
       req = &actor->simcall;
       break;
@@ -151,47 +147,47 @@ static inline smx_simcall_t MC_state_get_request_for_process(simgrid::mc::State*
   state->transition_.pid_ = actor->get_pid();
   state->executed_req_    = *req;
   // Fetch the data of the request and translate it:
-  state->internal_req = *req;
+  state->internal_req_ = *req;
 
   /* The waitany and testany request are transformed into a wait or test request over the corresponding communication
    * action so it can be treated later by the dependence function. */
   switch (req->call_) {
     case SIMCALL_COMM_WAITANY: {
-      state->internal_req.call_ = SIMCALL_COMM_WAIT;
+      state->internal_req_.call_ = SIMCALL_COMM_WAIT;
       simgrid::kernel::activity::CommImpl* remote_comm;
       remote_comm = mc_model_checker->process().read(
           remote(simcall_comm_waitany__get__comms(req) + state->transition_.argument_));
-      mc_model_checker->process().read(state->internal_comm, remote(remote_comm));
-      simcall_comm_wait__set__comm(&state->internal_req, state->internal_comm.get_buffer());
-      simcall_comm_wait__set__timeout(&state->internal_req, 0);
+      mc_model_checker->process().read(state->internal_comm_, remote(remote_comm));
+      simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
+      simcall_comm_wait__set__timeout(&state->internal_req_, 0);
       break;
     }
 
     case SIMCALL_COMM_TESTANY:
-      state->internal_req.call_ = SIMCALL_COMM_TEST;
+      state->internal_req_.call_ = SIMCALL_COMM_TEST;
 
       if (state->transition_.argument_ > 0) {
         simgrid::kernel::activity::CommImpl* remote_comm = mc_model_checker->process().read(
             remote(simcall_comm_testany__get__comms(req) + state->transition_.argument_));
-        mc_model_checker->process().read(state->internal_comm, remote(remote_comm));
+        mc_model_checker->process().read(state->internal_comm_, remote(remote_comm));
       }
 
-      simcall_comm_test__set__comm(&state->internal_req, state->internal_comm.get_buffer());
-      simcall_comm_test__set__result(&state->internal_req, state->transition_.argument_);
+      simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
+      simcall_comm_test__set__result(&state->internal_req_, state->transition_.argument_);
       break;
 
     case SIMCALL_COMM_WAIT:
-      mc_model_checker->process().read_bytes(&state->internal_comm, sizeof(state->internal_comm),
+      mc_model_checker->process().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
                                              remote(simcall_comm_wait__getraw__comm(req)));
-      simcall_comm_wait__set__comm(&state->executed_req_, state->internal_comm.get_buffer());
-      simcall_comm_wait__set__comm(&state->internal_req, state->internal_comm.get_buffer());
+      simcall_comm_wait__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
+      simcall_comm_wait__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
       break;
 
     case SIMCALL_COMM_TEST:
-      mc_model_checker->process().read_bytes(&state->internal_comm, sizeof(state->internal_comm),
+      mc_model_checker->process().read_bytes(&state->internal_comm_, sizeof(state->internal_comm_),
                                              remote(simcall_comm_test__getraw__comm(req)));
-      simcall_comm_test__set__comm(&state->executed_req_, state->internal_comm.get_buffer());
-      simcall_comm_test__set__comm(&state->internal_req, state->internal_comm.get_buffer());
+      simcall_comm_test__set__comm(&state->executed_req_, state->internal_comm_.get_buffer());
+      simcall_comm_test__set__comm(&state->internal_req_, state->internal_comm_.get_buffer());
       break;
 
     default:
@@ -202,14 +198,14 @@ static inline smx_simcall_t MC_state_get_request_for_process(simgrid::mc::State*
   return req;
 }
 
-smx_simcall_t MC_state_get_request(simgrid::mc::State* state)
+smx_simcall_t MC_state_choose_request(simgrid::mc::State* state)
 {
   for (auto& actor : mc_model_checker->process().actors()) {
     /* Only consider the actors that were marked as interleaving by the checker algorithm */
     if (not state->actor_states_[actor.copy.get_buffer()->get_pid()].is_todo())
       continue;
 
-    smx_simcall_t res = MC_state_get_request_for_process(state, actor.copy.get_buffer());
+    smx_simcall_t res = MC_state_choose_request_for_process(state, actor.copy.get_buffer());
     if (res)
       return res;
   }