#include <cstddef>
#include <cstdint>
+#include <cxxabi.h>
+
#include <vector>
+#include <xbt/dynar.h>
+#include <xbt/automaton.h>
+#include <xbt/swag.h>
+
#include "mc_base.h"
#include "mc/mc.h"
#include "src/mc/mc_request.h"
#include "src/mc/mc_safety.h"
#include "src/mc/mc_snapshot.h"
-#include "src/mc/mc_liveness.h"
#include "src/mc/mc_private.h"
#include "src/mc/mc_unw.h"
#include "src/mc/mc_smx.h"
+#include "src/mc/Checker.hpp"
#endif
#include "src/mc/mc_record.h"
#include "src/mc/mc_protocol.h"
#include "src/mc/Client.hpp"
+#include "src/mc/Transition.hpp"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc, "Logging specific to MC (global)");
}
#if HAVE_MC
-int user_max_depth_reached = 0;
/* MC global data structures */
-mc_state_t mc_current_state = nullptr;
+simgrid::mc::State* mc_current_state = nullptr;
char mc_replay_mode = false;
mc_stats_t mc_stats = nullptr;
-mc_global_t initial_global_state = nullptr;
-xbt_fifo_t mc_stack = nullptr;
/* Liveness */
namespace simgrid {
namespace mc {
+std::unique_ptr<s_mc_global_t> initial_global_state = nullptr;
xbt_automaton_t property_automaton = nullptr;
}
}
-#if HAVE_MC
-void MC_init()
-{
- simgrid::mc::processes_time.resize(simix_process_maxpid);
-
- if (_sg_mc_visited > 0 || _sg_mc_liveness || _sg_mc_termination || mc_mode == MC_MODE_SERVER) {
- /* Those requests are handled on the client side and propagated by message
- * to the server: */
-
- MC_ignore_heap(simgrid::mc::processes_time.data(),
- simix_process_maxpid * sizeof(double));
-
- smx_process_t process;
- xbt_swag_foreach(process, simix_global->process_list)
- MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup));
- }
-}
-
-#endif
-
/******************************* Core of MC *******************************/
/**************************************************************************/
void MC_run()
{
- mc_mode = MC_MODE_CLIENT;
- MC_init();
+ simgrid::mc::processes_time.resize(simix_process_maxpid);
+ MC_ignore_heap(simgrid::mc::processes_time.data(),
+ simgrid::mc::processes_time.size() * sizeof(simgrid::mc::processes_time[0]));
+ smx_process_t process;
+ xbt_swag_foreach(process, simix_global->process_list)
+ MC_ignore_heap(&(process->process_hookup), sizeof(process->process_hookup));
simgrid::mc::Client::get()->mainLoop();
-}
-
-void MC_exit(void)
-{
simgrid::mc::processes_time.clear();
- MC_memory_exit();
- //xbt_abort();
}
+namespace simgrid {
+namespace mc {
+
/**
* \brief Re-executes from the state at position start all the transitions indicated by
* a given model-checker stack.
* \param stack The stack with the transitions to execute.
* \param start Start index to begin the re-execution.
*/
-void MC_replay(xbt_fifo_t stack)
+void replay(std::list<std::unique_ptr<simgrid::mc::State>> const& stack)
{
- int value, count = 1;
- char *req_str;
- smx_simcall_t req = nullptr, saved_req = NULL;
- xbt_fifo_item_t item, start_item;
- mc_state_t state;
-
XBT_DEBUG("**** Begin Replay ****");
/* Intermediate backtracking */
if(_sg_mc_checkpoint > 0 || _sg_mc_termination || _sg_mc_visited > 0) {
- start_item = xbt_fifo_get_first_item(stack);
- state = (mc_state_t)xbt_fifo_get_item_content(start_item);
- if(state->system_state){
+ simgrid::mc::State* state = stack.back().get();
+ if (state->system_state) {
simgrid::mc::restore_snapshot(state->system_state);
if(_sg_mc_comms_determinism || _sg_mc_send_determinism)
MC_restore_communications_pattern(state);
/* Restore the initial state */
- simgrid::mc::restore_snapshot(initial_global_state->snapshot);
- /* At the moment of taking the snapshot the raw heap was set, so restoring
- * it will set it back again, we have to unset it to continue */
-
- start_item = xbt_fifo_get_last_item(stack);
+ simgrid::mc::restore_snapshot(simgrid::mc::initial_global_state->snapshot);
if (_sg_mc_comms_determinism || _sg_mc_send_determinism) {
// int n = xbt_dynar_length(incomplete_communications_pattern);
assert(n == xbt_dynar_length(initial_communications_pattern));
for (unsigned j=0; j < n ; j++) {
xbt_dynar_reset((xbt_dynar_t)xbt_dynar_get_as(incomplete_communications_pattern, j, xbt_dynar_t));
- xbt_dynar_get_as(initial_communications_pattern, j, mc_list_comm_pattern_t)->index_comm = 0;
+ xbt_dynar_get_as(initial_communications_pattern, j, simgrid::mc::PatternCommunicationList*)->index_comm = 0;
}
}
+ int count = 1;
+
/* Traverse the stack from the state at position start and re-execute the transitions */
- for (item = start_item;
- item != xbt_fifo_get_first_item(stack);
- item = xbt_fifo_get_prev_item(item)) {
+ for (std::unique_ptr<simgrid::mc::State> const& state : stack) {
+ if (state == stack.back())
+ break;
- state = (mc_state_t) xbt_fifo_get_item_content(item);
- saved_req = MC_state_get_executed_request(state, &value);
+ int req_num = state->transition.argument;
+ smx_simcall_t saved_req = &state->executed_req;
if (saved_req) {
/* because we got a copy of the executed request, we have to fetch the
real one, pointed by the request field of the issuer process */
const smx_process_t issuer = MC_smx_simcall_get_issuer(saved_req);
- req = &issuer->simcall;
+ smx_simcall_t req = &issuer->simcall;
/* Debug information */
- if (XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)) {
- req_str = simgrid::mc::request_to_string(req, value, simgrid::mc::RequestType::simix);
- XBT_DEBUG("Replay: %s (%p)", req_str, state);
- xbt_free(req_str);
- }
+ XBT_DEBUG("Replay: %s (%p)",
+ simgrid::mc::request_to_string(
+ req, req_num, simgrid::mc::RequestType::simix).c_str(),
+ state.get());
/* TODO : handle test and testany simcalls */
e_mc_call_type_t call = MC_CALL_TYPE_NONE;
if (_sg_mc_comms_determinism || _sg_mc_send_determinism)
call = MC_get_call_type(req);
- simgrid::mc::handle_simcall(req, value);
-
+ mc_model_checker->handle_simcall(state->transition);
if (_sg_mc_comms_determinism || _sg_mc_send_determinism)
- MC_handle_comm_pattern(call, req, value, nullptr, 1);
-
+ MC_handle_comm_pattern(call, req, req_num, nullptr, 1);
mc_model_checker->wait_for_requests();
count++;
XBT_DEBUG("**** End Replay ****");
}
-/**
- * \brief Dumps the contents of a model-checker's stack and shows the actual
- * execution trace
- * \param stack The stack to dump
- */
-void MC_dump_stack_safety(xbt_fifo_t stack)
-{
- MC_show_stack_safety(stack);
-
- mc_state_t state;
-
- while ((state = (mc_state_t) xbt_fifo_pop(stack)) != nullptr)
- MC_state_delete(state, !state->in_visited_states ? 1 : 0);
}
-
-
-void MC_show_stack_safety(xbt_fifo_t stack)
-{
- int value;
- mc_state_t state;
- xbt_fifo_item_t item;
- smx_simcall_t req;
- char *req_str = nullptr;
-
- for (item = xbt_fifo_get_last_item(stack);
- item; item = xbt_fifo_get_prev_item(item)) {
- state = (mc_state_t)xbt_fifo_get_item_content(item);
- req = MC_state_get_executed_request(state, &value);
- if (req) {
- req_str = simgrid::mc::request_to_string(req, value, simgrid::mc::RequestType::executed);
- XBT_INFO("%s", req_str);
- xbt_free(req_str);
- }
- }
}
-void MC_show_deadlock(smx_simcall_t req)
+void MC_show_deadlock(void)
{
- /*char *req_str = nullptr; */
XBT_INFO("**************************");
XBT_INFO("*** DEAD-LOCK DETECTED ***");
XBT_INFO("**************************");
- XBT_INFO("Locked request:");
- /*req_str = simgrid::mc::request_to_string(req);
- XBT_INFO("%s", req_str);
- xbt_free(req_str); */
- XBT_INFO("Counter-example execution trace:");
- MC_dump_stack_safety(mc_stack);
- MC_print_statistics(mc_stats);
-}
-
-void MC_show_non_termination(void){
- XBT_INFO("******************************************");
- XBT_INFO("*** NON-PROGRESSIVE CYCLE DETECTED ***");
- XBT_INFO("******************************************");
XBT_INFO("Counter-example execution trace:");
- MC_dump_stack_safety(mc_stack);
+ for (auto& s : mc_model_checker->getChecker()->getTextualTrace())
+ XBT_INFO("%s", s.c_str());
MC_print_statistics(mc_stats);
}
void MC_print_statistics(mc_stats_t stats)
{
if(_sg_mc_comms_determinism) {
- if (!initial_global_state->recv_deterministic && initial_global_state->send_deterministic){
+ if (!simgrid::mc::initial_global_state->recv_deterministic &&
+ simgrid::mc::initial_global_state->send_deterministic){
XBT_INFO("******************************************************");
XBT_INFO("**** Only-send-deterministic communication pattern ****");
XBT_INFO("******************************************************");
- XBT_INFO("%s", initial_global_state->recv_diff);
- }else if(!initial_global_state->send_deterministic && initial_global_state->recv_deterministic) {
+ XBT_INFO("%s", simgrid::mc::initial_global_state->recv_diff);
+ }else if(!simgrid::mc::initial_global_state->send_deterministic &&
+ simgrid::mc::initial_global_state->recv_deterministic) {
XBT_INFO("******************************************************");
XBT_INFO("**** Only-recv-deterministic communication pattern ****");
XBT_INFO("******************************************************");
- XBT_INFO("%s", initial_global_state->send_diff);
+ XBT_INFO("%s", simgrid::mc::initial_global_state->send_diff);
}
}
fprintf(dot_output, "}\n");
fclose(dot_output);
}
- if (initial_global_state != nullptr && (_sg_mc_comms_determinism || _sg_mc_send_determinism)) {
- XBT_INFO("Send-deterministic : %s", !initial_global_state->send_deterministic ? "No" : "Yes");
+ if (simgrid::mc::initial_global_state != nullptr
+ && (_sg_mc_comms_determinism || _sg_mc_send_determinism)) {
+ XBT_INFO("Send-deterministic : %s",
+ !simgrid::mc::initial_global_state->send_deterministic ? "No" : "Yes");
if (_sg_mc_comms_determinism)
- XBT_INFO("Recv-deterministic : %s", !initial_global_state->recv_deterministic ? "No" : "Yes");
+ XBT_INFO("Recv-deterministic : %s",
+ !simgrid::mc::initial_global_state->recv_deterministic ? "No" : "Yes");
}
if (getenv("SIMGRID_MC_SYSTEM_STATISTICS")){
int ret=system("free");
xbt_automaton_load(simgrid::mc::property_automaton, file);
}
-// TODO, fix cross-process access (this function is not used)
-static void MC_dump_stacks(FILE* file)
+namespace simgrid {
+namespace mc {
+
+void dumpStack(FILE* file, unw_cursor_t cursor)
{
- int nstack = 0;
- for (auto const& stack : mc_model_checker->process().stack_areas()) {
+ int nframe = 0;
+ char buffer[100];
+
+ unw_word_t off;
+ do {
+ const char * name = !unw_get_proc_name(&cursor, buffer, 100, &off) ? buffer : "?";
+
+ int status;
+
+ // Demangle C++ names:
+ char* realname = abi::__cxa_demangle(name, 0, 0, &status);
- xbt_die("Fix cross-process access to the context");
- unw_context_t * context = (unw_context_t *)stack.context;
- fprintf(file, "Stack %i:\n", nstack);
-
- int nframe = 0;
- char buffer[100];
- unw_cursor_t c;
- unw_init_local (&c, context);
- unw_word_t off;
- do {
- const char * name = !unw_get_proc_name(&c, buffer, 100, &off) ? buffer : "?";
#if defined(__x86_64__)
- unw_word_t rip = 0;
- unw_word_t rsp = 0;
- unw_get_reg(&c, UNW_X86_64_RIP, &rip);
- unw_get_reg(&c, UNW_X86_64_RSP, &rsp);
- fprintf(file, " %i: %s (RIP=0x%" PRIx64 " RSP=0x%" PRIx64 ")\n",
- nframe, name, (std::uint64_t) rip, (std::uint64_t) rsp);
+ unw_word_t rip = 0;
+ unw_word_t rsp = 0;
+ unw_get_reg(&cursor, UNW_X86_64_RIP, &rip);
+ unw_get_reg(&cursor, UNW_X86_64_RSP, &rsp);
+ fprintf(file, " %i: %s (RIP=0x%" PRIx64 " RSP=0x%" PRIx64 ")\n",
+ nframe, realname ? realname : name, (std::uint64_t) rip, (std::uint64_t) rsp);
#else
- fprintf(file, " %i: %s\n", nframe, name);
+ fprintf(file, " %i: %s\n", nframe, realname ? realname : name);
#endif
- ++nframe;
- } while(unw_step(&c));
- ++nstack;
+ free(realname);
+ ++nframe;
+ } while(unw_step(&cursor));
+}
+
+}
+}
+
+static void MC_dump_stacks(FILE* file)
+{
+ int nstack = 0;
+ for (auto const& stack : mc_model_checker->process().stack_areas()) {
+ fprintf(file, "Stack %i:\n", nstack++);
+
+ simgrid::mc::UnwindContext context;
+ unw_context_t raw_context =
+ mc_model_checker->process().read<unw_context_t>(
+ simgrid::mc::remote((unw_context_t *)stack.context));
+ context.initialize(&mc_model_checker->process(), &raw_context);
+
+ unw_cursor_t cursor = context.cursor();
+ simgrid::mc::dumpStack(file, cursor);
}
}
#endif
XBT_INFO("*** PROPERTY NOT VALID ***");
XBT_INFO("**************************");
XBT_INFO("Counter-example execution trace:");
- MC_record_dump_path(mc_stack);
- MC_dump_stack_safety(mc_stack);
+ simgrid::mc::dumpRecordPath();
+ for (auto& s : mc_model_checker->getChecker()->getTextualTrace())
+ XBT_INFO("%s", s.c_str());
MC_print_statistics(mc_stats);
}
else
XBT_INFO("No core dump was generated by the system.");
XBT_INFO("Counter-example execution trace:");
- MC_record_dump_path(mc_stack);
- MC_dump_stack_safety(mc_stack);
+ simgrid::mc::dumpRecordPath();
+ for (auto& s : mc_model_checker->getChecker()->getTextualTrace())
+ XBT_INFO("%s", s.c_str());
MC_print_statistics(mc_stats);
+ XBT_INFO("Stack trace:");
+ mc_model_checker->process().dumpStack();
}
#endif
