X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/9f9eb7fc2dcaeb4e7bdf6b0aaf76fe713e370746..ca8bea85e8ccf52bdc546bc83ecd27a6671f95ee:/src/mc/ModelChecker.cpp

diff --git a/src/mc/ModelChecker.cpp b/src/mc/ModelChecker.cpp
index da9a2451af..5d0e4af050 100644
--- a/src/mc/ModelChecker.cpp
+++ b/src/mc/ModelChecker.cpp
@@ -30,14 +30,12 @@
 #include "src/mc/mc_private.h"
 #include "src/mc/mc_ignore.h"
 #include "src/mc/mc_exit.h"
-#include "src/mc/mc_liveness.h"
-
-extern "C" {
+#include "src/mc/mc_record.h"
+#include "src/mc/Transition.hpp"
+#include "src/mc/Checker.hpp"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_ModelChecker, mc, "ModelChecker");
 
-}
-
 ::simgrid::mc::ModelChecker* mc_model_checker = nullptr;
 
 using simgrid::mc::remote;
@@ -50,7 +48,6 @@ namespace simgrid {
 namespace mc {
 
 ModelChecker::ModelChecker(std::unique_ptr<Process> process) :
-  hostnames_(xbt_dict_new()),
   page_store_(500),
   process_(std::move(process)),
   parent_snapshot_(nullptr)
@@ -58,22 +55,7 @@ ModelChecker::ModelChecker(std::unique_ptr<Process> process) :
 
 }
 
-ModelChecker::~ModelChecker()
-{
-  xbt_dict_free(&this->hostnames_);
-}
-
-const char* ModelChecker::get_host_name(const char* hostname)
-{
-  // Lookup the host name in the dictionary (or create it):
-  xbt_dictelm_t elt = xbt_dict_get_elm_or_null(this->hostnames_, hostname);
-  if (!elt) {
-    xbt_dict_set(this->hostnames_, hostname, nullptr, nullptr);
-    elt = xbt_dict_get_elm_or_null(this->hostnames_, hostname);
-    assert(elt);
-  }
-  return elt->key;
-}
+ModelChecker::~ModelChecker() {}
 
 void ModelChecker::start()
 {
@@ -84,7 +66,7 @@ void ModelChecker::start()
   sigemptyset(&set);
   sigaddset(&set, SIGCHLD);
   if (sigprocmask(SIG_BLOCK, &set, nullptr) == -1)
-    throw simgrid::xbt::errno_error(errno);
+    throw simgrid::xbt::errno_error();
 
   sigset_t full_set;
   sigfillset(&full_set);
@@ -92,13 +74,13 @@ void ModelChecker::start()
   // Prepare data for poll:
 
   struct pollfd* socket_pollfd = &fds_[SOCKET_FD_INDEX];
-  socket_pollfd->fd = process_->socket();;
+  socket_pollfd->fd = process_->getChannel().getSocket();
   socket_pollfd->events = POLLIN;
   socket_pollfd->revents = 0;
 
   int signal_fd = signalfd(-1, &set, 0);
   if (signal_fd == -1)
-    throw simgrid::xbt::errno_error(errno);
+    throw simgrid::xbt::errno_error();
 
   struct pollfd* signalfd_pollfd = &fds_[SIGNAL_FD_INDEX];
   signalfd_pollfd->fd = signal_fd;
@@ -115,16 +97,9 @@ void ModelChecker::start()
 
   process_->init();
 
-  /* Initialize statistics */
-  mc_stats = xbt_new0(s_mc_stats_t, 1);
-  mc_stats->state_size = 1;
-
   if ((_sg_mc_dot_output_file != nullptr) && (_sg_mc_dot_output_file[0] != '\0'))
     MC_init_dot_output();
 
-  /* Init parmap */
-  //parmap = xbt_parmap_mc_new(xbt_os_get_numcores(), XBT_PARMAP_DEFAULT);
-
   setup_ignore();
 
   ptrace(PTRACE_SETOPTIONS, pid, nullptr, PTRACE_O_TRACEEXIT);
@@ -158,9 +133,6 @@ void ModelChecker::setup_ignore()
 
   /* Static variable used for tracing */
   process.ignore_global_variable("counter");
-
-  /* SIMIX */
-  process.ignore_global_variable("smx_total_comms");
 }
 
 void ModelChecker::shutdown()
@@ -177,10 +149,10 @@ void ModelChecker::shutdown()
 
 void ModelChecker::resume(simgrid::mc::Process& process)
 {
-  int res = process.send_message(MC_MESSAGE_CONTINUE);
+  int res = process.getChannel().send(MC_MESSAGE_CONTINUE);
   if (res)
-    throw simgrid::xbt::errno_error(res);
-  process.cache_flags = (mc_process_cache_flags_t) 0;
+    throw simgrid::xbt::errno_error();
+  process.clear_cache();
 }
 
 static
@@ -190,7 +162,41 @@ void throw_socket_error(int fd)
   socklen_t errlen = sizeof(error);
   if (getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)&error, &errlen) == -1)
     error = errno;
-  throw simgrid::xbt::errno_error(errno);
+  throw simgrid::xbt::errno_error();
+}
+
+static void MC_report_crash(int status)
+{
+  XBT_INFO("**************************");
+  XBT_INFO("** CRASH IN THE PROGRAM **");
+  XBT_INFO("**************************");
+  if (WIFSIGNALED(status))
+    XBT_INFO("From signal: %s", strsignal(WTERMSIG(status)));
+  else if (WIFEXITED(status))
+    XBT_INFO("From exit: %i", WEXITSTATUS(status));
+  if (WCOREDUMP(status))
+    XBT_INFO("A core dump was generated by the system.");
+  else
+    XBT_INFO("No core dump was generated by the system.");
+  XBT_INFO("Counter-example execution trace:");
+  simgrid::mc::dumpRecordPath();
+  for (auto& s : mc_model_checker->getChecker()->getTextualTrace())
+    XBT_INFO("%s", s.c_str());
+  simgrid::mc::session->logState();
+  XBT_INFO("Stack trace:");
+  mc_model_checker->process().dumpStack();
+}
+
+static void MC_report_assertion_error(void)
+{
+  XBT_INFO("**************************");
+  XBT_INFO("*** PROPERTY NOT VALID ***");
+  XBT_INFO("**************************");
+  XBT_INFO("Counter-example execution trace:");
+  simgrid::mc::dumpRecordPath();
+  for (auto& s : mc_model_checker->getChecker()->getTextualTrace())
+    XBT_INFO("%s", s.c_str());
+  simgrid::mc::session->logState();
 }
 
 bool ModelChecker::handle_message(char* buffer, ssize_t size)
@@ -259,13 +265,13 @@ bool ModelChecker::handle_message(char* buffer, ssize_t size)
         xbt_die("Support for client-side function proposition is not implemented.");
       XBT_DEBUG("Received symbol: %s", message.name);
 
-      if (_mc_property_automaton == nullptr)
-        _mc_property_automaton = xbt_automaton_new();
+      if (simgrid::mc::property_automaton == nullptr)
+        simgrid::mc::property_automaton = xbt_automaton_new();
 
       simgrid::mc::Process* process = &this->process();
-      simgrid::mc::remote_ptr<int> address
+      simgrid::mc::RemotePtr<int> address
         = simgrid::mc::remote((int*) message.data);
-      simgrid::xbt::add_proposition(_mc_property_automaton,
+      simgrid::xbt::add_proposition(simgrid::mc::property_automaton,
         message.name,
         [process, address]() { return process->read(address); }
         );
@@ -288,10 +294,10 @@ bool ModelChecker::handle_message(char* buffer, ssize_t size)
   return true;
 }
 
-/** Terminate the model-checker aplication */
+/** Terminate the model-checker application */
 void ModelChecker::exit(int status)
 {
-  // TODO, terminate the model checker politely instead of exiting rudel
+  // TODO, terminate the model checker politely instead of exiting rudely
   if (process().running())
     kill(process().pid(), SIGKILL);
   ::exit(status);
@@ -308,20 +314,19 @@ bool ModelChecker::handle_events()
     case EINTR:
       continue;
     default:
-      throw simgrid::mc::errno_error(errno);
+      throw simgrid::xbt::errno_error();
     }
   }
 
   if (socket_pollfd->revents) {
     if (socket_pollfd->revents & POLLIN) {
-      ssize_t size = MC_receive_message(socket_pollfd->fd, buffer, sizeof(buffer), MSG_DONTWAIT);
+      ssize_t size = process_->getChannel().receive(buffer, sizeof(buffer), false);
       if (size == -1 && errno != EAGAIN)
-        throw simgrid::mc::errno_error(errno);
+        throw simgrid::xbt::errno_error();
       return handle_message(buffer, size);
     }
-    if (socket_pollfd->revents & POLLERR) {
+    if (socket_pollfd->revents & POLLERR)
       throw_socket_error(socket_pollfd->fd);
-    }
     if (socket_pollfd->revents & POLLHUP)
       xbt_die("Socket hang up?");
   }
@@ -331,9 +336,8 @@ bool ModelChecker::handle_events()
       this->handle_signals();
       return true;
     }
-    if (signalfd_pollfd->revents & POLLERR) {
+    if (signalfd_pollfd->revents & POLLERR)
       throw_socket_error(signalfd_pollfd->fd);
-    }
     if (signalfd_pollfd->revents & POLLHUP)
       xbt_die("Signalfd hang up?");
   }
@@ -357,7 +361,7 @@ void ModelChecker::handle_signals()
       if (errno == EINTR)
         continue;
       else
-        throw simgrid::mc::errno_error(errno);
+        throw simgrid::xbt::errno_error();
     } else if (size != sizeof(info))
         return throw std::runtime_error(
           "Bad communication with model-checked application");
@@ -382,7 +386,7 @@ void ModelChecker::handle_waitpid()
           break;
       } else {
         XBT_ERROR("Could not wait for pid");
-        throw simgrid::mc::errno_error(errno);
+        throw simgrid::xbt::errno_error();
       }
     }
 
@@ -427,25 +431,41 @@ void ModelChecker::on_signal(const struct signalfd_siginfo* info)
 void ModelChecker::wait_client(simgrid::mc::Process& process)
 {
   this->resume(process);
-  while (this->process().running()) {
+  while (this->process().running())
     if (!this->handle_events())
       return;
-  }
 }
 
-void ModelChecker::simcall_handle(simgrid::mc::Process& process, unsigned long pid, int value)
+void ModelChecker::handle_simcall(Transition const& transition)
 {
   s_mc_simcall_handle_message m;
   memset(&m, 0, sizeof(m));
   m.type  = MC_MESSAGE_SIMCALL_HANDLE;
-  m.pid   = pid;
-  m.value = value;
-  process.send_message(m);
-  process.cache_flags = (mc_process_cache_flags_t) 0;
-  while (process.running()) {
+  m.pid   = transition.pid;
+  m.value = transition.argument;
+  this->process_->getChannel().send(m);
+  this->process_->clear_cache();
+  while (this->process_->running())
     if (!this->handle_events())
       return;
-  }
+}
+
+bool ModelChecker::checkDeadlock()
+{
+  int res;
+  if ((res = this->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("Received unexpected message %s (%i, size=%i) "
+      "expected MC_MESSAGE_DEADLOCK_CHECK_REPLY (%i, size=%i)",
+      MC_message_type_name(message.type), (int) message.type, (int) s,
+      (int) MC_MESSAGE_DEADLOCK_CHECK_REPLY, (int) sizeof(message)
+      );
+  return message.value != 0;
 }
 
 }