-/* Copyright (c) 2008-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2008-2019. 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 <assert.h>
+#include "src/mc/mc_state.hpp"
+#include "src/mc/mc_comm_pattern.hpp"
+#include "src/mc/mc_config.hpp"
+#include "src/mc/mc_request.hpp"
+#include "src/mc/mc_smx.hpp"
-#include <algorithm>
-
-#include <xbt/log.h>
-#include <xbt/sysdep.h>
-
-#include "src/simix/smx_private.h"
-#include "src/mc/mc_state.h"
-#include "src/mc/mc_request.h"
-#include "src/mc/mc_private.h"
-#include "src/mc/mc_comm_pattern.h"
-#include "src/mc/mc_smx.h"
-#include "src/mc/mc_xbt.hpp"
-#include "src/mc/Transition.hpp"
+#include <boost/range/algorithm.hpp>
using simgrid::mc::remote;
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc,
- "Logging specific to MC (state)");
-
-/**
- * \brief Creates a state data structure used by the exploration algorithm
- */
-simgrid::mc::State* MC_state_new(unsigned long state_number)
-{
- simgrid::mc::State* state = new simgrid::mc::State();
- state->processStates.resize(MC_smx_get_maxpid());
- state->num = state_number;
- /* Stateful model checking */
- if((_sg_mc_checkpoint > 0 && (state_number % _sg_mc_checkpoint == 0)) || _sg_mc_termination){
- state->system_state = simgrid::mc::take_snapshot(state->num);
- if(_sg_mc_comms_determinism || _sg_mc_send_determinism){
- MC_state_copy_incomplete_communications_pattern(state);
- MC_state_copy_index_communications_pattern(state);
- }
- }
- return state;
-}
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_state, mc, "Logging specific to MC (state)");
namespace simgrid {
namespace mc {
-State::State()
+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));
+ std::memset(&this->executed_req_, 0, sizeof(this->executed_req_));
+
+ 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_);
+ if (_sg_mc_comms_determinism || _sg_mc_send_determinism) {
+ MC_state_copy_incomplete_communications_pattern(this);
+ MC_state_copy_index_communications_pattern(this);
+ }
+ }
}
-std::size_t State::interleaveSize() const
+std::size_t State::interleave_size() const
{
- return std::count_if(this->processStates.begin(), this->processStates.end(),
- [](simgrid::mc::ProcessState const& state) { return state.isToInterleave(); });
+ return boost::range::count_if(this->actor_states_, [](simgrid::mc::ActorState const& a) { return a.is_todo(); });
}
-Transition State::getTransition() const
+Transition State::get_transition() const
{
- return this->transition;
+ return this->transition_;
}
}
}
-static inline smx_simcall_t MC_state_get_request_for_process(
- simgrid::mc::State* state, smx_process_t process)
+/* Search an enabled transition for the given process.
+ *
+ * This can be seen as an iterator returning the next transition of the process.
+ *
+ * We only consider the processes that are both
+ * - marked "to be interleaved" in their ActorState (controlled by the checker algorithm).
+ * - which simcall can currently be executed (like a comm where the other partner is already known)
+ * Once we returned the last enabled transition of a process, it is marked done.
+ *
+ * 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)
{
- simgrid::mc::ProcessState* procstate = &state->processStates[process->pid];
- state->transition.pid = -1;
- state->transition.argument = -1;
+ /* reset the outgoing transition */
+ simgrid::mc::ActorState* procstate = &state->actor_states_[actor->get_pid()];
+ state->transition_.pid_ = -1;
+ state->transition_.argument_ = -1;
+ state->executed_req_.call_ = SIMCALL_NONE;
- if (!procstate->isToInterleave())
- return nullptr;
- if (!simgrid::mc::process_is_enabled(process))
- return nullptr;
+ if (not simgrid::mc::actor_is_enabled(actor))
+ return nullptr; // Not executable in the application
smx_simcall_t req = nullptr;
- switch (process->simcall.call) {
- case SIMCALL_COMM_WAITANY:
- state->transition.argument = -1;
- while (procstate->interleave_count <
- read_length(mc_model_checker->process(),
- remote(simcall_comm_waitany__get__comms(&process->simcall)))) {
- if (simgrid::mc::request_is_enabled_by_idx(&process->simcall,
- procstate->interleave_count++)) {
- state->transition.argument = procstate->interleave_count - 1;
- break;
- }
+ switch (actor->simcall.call_) {
+ case SIMCALL_COMM_WAITANY:
+ state->transition_.argument_ = -1;
+ while (procstate->times_considered < simcall_comm_waitany__get__count(&actor->simcall)) {
+ if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall, procstate->times_considered)) {
+ state->transition_.argument_ = procstate->times_considered;
+ ++procstate->times_considered;
+ break;
}
-
- if (procstate->interleave_count >=
- simgrid::mc::read_length(mc_model_checker->process(),
- simgrid::mc::remote(simcall_comm_waitany__get__comms(&process->simcall))))
- procstate->setDone();
- if (state->transition.argument != -1)
- req = &process->simcall;
- break;
-
- case SIMCALL_COMM_TESTANY: {
- unsigned start_count = procstate->interleave_count;
- state->transition.argument = -1;
- while (procstate->interleave_count <
- read_length(mc_model_checker->process(),
- remote(simcall_comm_testany__get__comms(&process->simcall))))
- if (simgrid::mc::request_is_enabled_by_idx(&process->simcall,
- procstate->interleave_count++)) {
- state->transition.argument = procstate->interleave_count - 1;
- break;
- }
-
- if (procstate->interleave_count >=
- read_length(mc_model_checker->process(),
- remote(simcall_comm_testany__get__comms(&process->simcall))))
- procstate->setDone();
-
- if (state->transition.argument != -1 || start_count == 0)
- req = &process->simcall;
-
- break;
+ ++procstate->times_considered;
}
- case SIMCALL_COMM_WAIT: {
- simgrid::mc::RemotePtr<simgrid::simix::Comm> remote_act = remote(
- static_cast<simgrid::simix::Comm*>(simcall_comm_wait__get__comm(&process->simcall)));
- simgrid::mc::Remote<simgrid::simix::Comm> temp_act;
- mc_model_checker->process().read(temp_act, remote_act);
- simgrid::simix::Comm* act = temp_act.getBuffer();
- if (act->src_proc && act->dst_proc)
- state->transition.argument = 0;
- else if (act->src_proc == nullptr && act->type == SIMIX_COMM_READY
- && act->detached == 1)
- state->transition.argument = 0;
- else
- state->transition.argument = -1;
- procstate->setDone();
- req = &process->simcall;
- break;
+ if (procstate->times_considered >= simcall_comm_waitany__get__count(&actor->simcall))
+ procstate->set_done();
+ if (state->transition_.argument_ != -1)
+ req = &actor->simcall;
+ break;
+
+ case SIMCALL_COMM_TESTANY: {
+ unsigned start_count = procstate->times_considered;
+ state->transition_.argument_ = -1;
+ while (procstate->times_considered < simcall_comm_testany__get__count(&actor->simcall)) {
+ if (simgrid::mc::request_is_enabled_by_idx(&actor->simcall, procstate->times_considered)) {
+ state->transition_.argument_ = procstate->times_considered;
+ ++procstate->times_considered;
+ break;
+ }
+ ++procstate->times_considered;
}
- case SIMCALL_MC_RANDOM: {
- int min_value = simcall_mc_random__get__min(&process->simcall);
- state->transition.argument = procstate->interleave_count + min_value;
- procstate->interleave_count++;
- if (state->transition.argument == simcall_mc_random__get__max(&process->simcall))
- procstate->setDone();
- req = &process->simcall;
- break;
- }
+ if (procstate->times_considered >= simcall_comm_testany__get__count(&actor->simcall))
+ procstate->set_done();
+
+ if (state->transition_.argument_ != -1 || start_count == 0)
+ req = &actor->simcall;
+
+ break;
+ }
+
+ case SIMCALL_COMM_WAIT: {
+ simgrid::mc::RemotePtr<simgrid::kernel::activity::CommImpl> remote_act =
+ 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();
+ if (act->src_actor_.get() && act->dst_actor_.get())
+ state->transition_.argument_ = 0;
+ else if (act->src_actor_.get() == nullptr && act->type_ == simgrid::kernel::activity::CommImpl::Type::READY &&
+ act->detached())
+ state->transition_.argument_ = 0;
+ else
+ state->transition_.argument_ = -1;
+ procstate->set_done();
+ req = &actor->simcall;
+ break;
+ }
- default:
- procstate->setDone();
- state->transition.argument = 0;
- req = &process->simcall;
- break;
+ case SIMCALL_MC_RANDOM: {
+ int min_value = simcall_mc_random__get__min(&actor->simcall);
+ state->transition_.argument_ = procstate->times_considered + min_value;
+ procstate->times_considered++;
+ if (state->transition_.argument_ == simcall_mc_random__get__max(&actor->simcall))
+ procstate->set_done();
+ req = &actor->simcall;
+ break;
+ }
+
+ default:
+ procstate->set_done();
+ state->transition_.argument_ = 0;
+ req = &actor->simcall;
+ break;
}
- if (!req)
+ if (not req)
return nullptr;
+ state->transition_.pid_ = actor->get_pid();
+ state->executed_req_ = *req;
// Fetch the data of the request and translate it:
+ 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;
+ 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);
+ break;
+ }
- state->transition.pid = process->pid;
-
- state->executed_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.issuer = req->issuer;
- smx_synchro_t remote_comm;
- read_element(mc_model_checker->process(),
- &remote_comm, remote(simcall_comm_waitany__get__comms(req)),
- state->transition.argument, sizeof(remote_comm));
- mc_model_checker->process().read(state->internal_comm, remote(
- static_cast<simgrid::simix::Comm*>(remote_comm)));
- simcall_comm_wait__set__comm(&state->internal_req, &state->internal_comm);
- simcall_comm_wait__set__timeout(&state->internal_req, 0);
- break;
- }
+ case SIMCALL_COMM_TESTANY:
+ state->internal_req.call_ = SIMCALL_COMM_TEST;
- case SIMCALL_COMM_TESTANY:
- state->internal_req.call = SIMCALL_COMM_TEST;
- state->internal_req.issuer = req->issuer;
-
- if (state->transition.argument > 0) {
- smx_synchro_t remote_comm;
- read_element(mc_model_checker->process(),
- &remote_comm, remote(simcall_comm_testany__get__comms(req)),
- state->transition.argument, sizeof(remote_comm));
- mc_model_checker->process().read(state->internal_comm, remote(
- static_cast<simgrid::simix::Comm*>(remote_comm)));
- }
+ 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));
+ }
- simcall_comm_test__set__comm(&state->internal_req, &state->internal_comm);
- simcall_comm_test__set__result(&state->internal_req, state->transition.argument);
- break;
-
- case SIMCALL_COMM_WAIT:
- state->internal_req = *req;
- mc_model_checker->process().read_bytes(&state->internal_comm ,
- sizeof(state->internal_comm), remote(simcall_comm_wait__get__comm(req)));
- simcall_comm_wait__set__comm(&state->executed_req, &state->internal_comm);
- simcall_comm_wait__set__comm(&state->internal_req, &state->internal_comm);
- break;
-
- case SIMCALL_COMM_TEST:
- state->internal_req = *req;
- mc_model_checker->process().read_bytes(&state->internal_comm,
- sizeof(state->internal_comm), remote(simcall_comm_test__get__comm(req)));
- simcall_comm_test__set__comm(&state->executed_req, &state->internal_comm);
- simcall_comm_test__set__comm(&state->internal_req, &state->internal_comm);
- break;
-
- default:
- state->internal_req = *req;
- break;
+ 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),
+ 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());
+ break;
+
+ case SIMCALL_COMM_TEST:
+ 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());
+ break;
+
+ default:
+ /* No translation needed */
+ break;
}
return req;
smx_simcall_t MC_state_get_request(simgrid::mc::State* state)
{
- for (auto& p : mc_model_checker->process().simix_processes()) {
- smx_simcall_t res = MC_state_get_request_for_process(state, p.copy.getBuffer());
+ 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());
if (res)
return res;
}
