#include <cstddef>
#include <cstdint>
+#include <cxxabi.h>
+
#include <vector>
#include "mc_base.h"
#include <sys/time.h>
#endif
-#include <xbt/fifo.h>
-#include <xbt/automaton.h>
-
#include "src/simix/smx_process_private.h"
#if HAVE_MC
#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"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
- "Logging specific to MC (global)");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc, "Logging specific to MC (global)");
e_mc_mode_t mc_mode;
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;
}
/* Dot output */
FILE *dot_output = nullptr;
-const char *colors[13];
/******************************* Initialisation of MC *******************************/
/*********************************************************************************/
void MC_init_dot_output()
-{ /* FIXME : more colors */
-
- colors[0] = "blue";
- colors[1] = "red";
- colors[2] = "green3";
- colors[3] = "goldenrod";
- colors[4] = "brown";
- colors[5] = "purple";
- colors[6] = "magenta";
- colors[7] = "turquoise4";
- colors[8] = "gray25";
- colors[9] = "forestgreen";
- colors[10] = "hotpink";
- colors[11] = "lightblue";
- colors[12] = "tan";
-
+{
dot_output = fopen(_sg_mc_dot_output_file, "w");
if (dot_output == 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();
}
-#if HAVE_MC
-int MC_deadlock_check()
-{
- if (mc_mode == MC_MODE_SERVER) {
- int res;
- if ((res = mc_model_checker->process().getChannel().send(MC_MESSAGE_DEADLOCK_CHECK)))
- xbt_die("Could not check deadlock state");
- s_mc_int_message_t message;
- ssize_t s = mc_model_checker->process().getChannel().receive(message);
- if (s == -1)
- xbt_die("Could not receive message");
- if (s != sizeof(message) || message.type != MC_MESSAGE_DEADLOCK_CHECK_REPLY)
- xbt_die("%s received unexpected message %s (%i, size=%i) "
- "expected MC_MESSAGE_DEADLOCK_CHECK_REPLY (%i, size=%i)",
- MC_mode_name(mc_mode),
- MC_message_type_name(message.type), (int) message.type, (int) s,
- (int) MC_MESSAGE_DEADLOCK_CHECK_REPLY, (int) sizeof(message)
- );
- return message.value;
- }
-
- bool deadlock = false;
- smx_process_t process;
- if (xbt_swag_size(simix_global->process_list)) {
- deadlock = true;
- xbt_swag_foreach(process, simix_global->process_list)
- if (simgrid::mc::process_is_enabled(process)) {
- deadlock = false;
- break;
- }
- }
- return deadlock;
-}
-#endif
+namespace simgrid {
+namespace mc {
/**
* \brief Re-executes from the state at position start all the transitions indicated by
* \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<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();
+ 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);
+ simgrid::mc::restore_snapshot(simgrid::mc::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);
-
if (_sg_mc_comms_determinism || _sg_mc_send_determinism) {
// int n = xbt_dynar_length(incomplete_communications_pattern);
unsigned n = MC_smx_get_maxpid();
}
}
+ 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 (simgrid::mc::State* 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 value;
+ smx_simcall_t saved_req = MC_state_get_executed_request(state, &value);
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);
+ char* 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("**** End Replay ****");
}
-void MC_replay_liveness(xbt_fifo_t stack)
-{
- xbt_fifo_item_t item;
- simgrid::mc::Pair* pair = nullptr;
- mc_state_t state = nullptr;
- smx_simcall_t req = nullptr, saved_req = NULL;
- int value, depth = 1;
- char *req_str;
-
- XBT_DEBUG("**** Begin Replay ****");
-
- /* Intermediate backtracking */
- if(_sg_mc_checkpoint > 0) {
- item = xbt_fifo_get_first_item(stack);
- pair = (simgrid::mc::Pair*) xbt_fifo_get_item_content(item);
- if(pair->graph_state->system_state){
- simgrid::mc::restore_snapshot(pair->graph_state->system_state);
- return;
- }
- }
-
- /* Restore the initial state */
- simgrid::mc::restore_snapshot(initial_global_state->snapshot);
-
- /* Traverse the stack from the initial state and re-execute the transitions */
- for (item = xbt_fifo_get_last_item(stack);
- item != xbt_fifo_get_first_item(stack);
- item = xbt_fifo_get_prev_item(item)) {
-
- pair = (simgrid::mc::Pair*) xbt_fifo_get_item_content(item);
-
- state = (mc_state_t) pair->graph_state;
-
- if (pair->exploration_started) {
-
- saved_req = MC_state_get_executed_request(state, &value);
-
- if (saved_req != nullptr) {
- /* 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;
-
- /* 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 (depth = %d) : %s (%p)", depth, req_str, state);
- xbt_free(req_str);
- }
-
- }
-
- simgrid::mc::handle_simcall(req, value);
- mc_model_checker->wait_for_requests();
- }
-
- /* Update statistics */
- mc_stats->visited_pairs++;
- mc_stats->executed_transitions++;
-
- depth++;
-
- }
-
- 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)
+void MC_show_deadlock(void)
{
- 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)
-{
- /*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);
+ for (auto& s : mc_model_checker->getChecker()->getTextualTrace())
+ XBT_INFO("%s", s.c_str());
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);
- MC_print_statistics(mc_stats);
-}
-
-namespace simgrid {
-namespace mc {
-
-void show_stack_liveness(xbt_fifo_t stack)
-{
- int value;
- simgrid::mc::Pair* pair;
- 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)) {
- pair = (simgrid::mc::Pair*) xbt_fifo_get_item_content(item);
- req = MC_state_get_executed_request(pair->graph_state, &value);
- if (req && req->call != SIMCALL_NONE) {
- req_str = simgrid::mc::request_to_string(req, value, simgrid::mc::RequestType::executed);
- XBT_INFO("%s", req_str);
- xbt_free(req_str);
- }
- }
-}
-
-void dump_stack_liveness(xbt_fifo_t stack)
-{
- simgrid::mc::Pair* pair;
- while ((pair = (simgrid::mc::Pair*) xbt_fifo_pop(stack)) != nullptr)
- delete pair;
-}
-
-}
-}
-
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
