Clear errno when throwing an errno exception

[simgrid.git] / src / mc / Session.cpp

diff --git a/src/mc/Session.cpp b/src/mc/Session.cpp
index 961a9ab..095d4b0 100644 (file)
--- a/src/mc/Session.cpp
+++ b/src/mc/Session.cpp
@@ -9,11 +9,16 @@
 
 #include <functional>
 
+#include <xbt/log.h>
 #include <xbt/system_error.hpp>
 #include <simgrid/sg_config.h>
 #include <simgrid/modelchecker.h>
+#include <mc/mc.h>
 
 #include "src/mc/Session.hpp"
+#include "src/mc/mc_state.h"
+#include "src/mc/mc_private.h"
+#include "src/mc/Checker.hpp"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_Session, mc, "Model-checker session");
 
@@ -27,9 +32,9 @@ static void setup_child_environment(int socket)
   sigset_t mask;
   sigemptyset (&mask);
   if (sigprocmask(SIG_SETMASK, &mask, nullptr) < 0)
-    throw simgrid::xbt::errno_error(errno, "Could not unblock signals");
+    throw simgrid::xbt::errno_error("Could not unblock signals");
   if (prctl(PR_SET_PDEATHSIG, SIGHUP) != 0)
-    throw simgrid::xbt::errno_error(errno, "Could not PR_SET_PDEATHSIG");
+    throw simgrid::xbt::errno_error("Could not PR_SET_PDEATHSIG");
 #endif
 
   int res;
@@ -37,7 +42,7 @@ static void setup_child_environment(int socket)
   // Remove CLOEXEC in order to pass the socket to the exec-ed program:
   int fdflags = fcntl(socket, F_GETFD, 0);
   if (fdflags == -1 || fcntl(socket, F_SETFD, fdflags & ~FD_CLOEXEC) == -1)
-    throw simgrid::xbt::errno_error(errno, "Could not remove CLOEXEC for socket");
+    throw simgrid::xbt::errno_error("Could not remove CLOEXEC for socket");
 
   // Set environment:
   setenv(MC_ENV_VARIABLE, "1", 1);
@@ -61,7 +66,7 @@ pid_t do_fork(F code)
 {
   pid_t pid = fork();
   if (pid < 0)
-    throw simgrid::xbt::errno_error(errno, "Could not fork model-checked process");
+    throw simgrid::xbt::errno_error("Could not fork model-checked process");
   if (pid != 0)
     return pid;
 
@@ -81,7 +86,7 @@ Session::Session(pid_t pid, int socket)
   std::unique_ptr<simgrid::mc::Process> process(new simgrid::mc::Process(pid, socket));
   // TODO, automatic detection of the config from the process
   process->privatized(
-    sg_cfg_get_boolean("smpi/privatize_global_variables"));
+    xbt_cfg_get_boolean("smpi/privatize_global_variables"));
   modelChecker_ = std::unique_ptr<ModelChecker>(
     new simgrid::mc::ModelChecker(std::move(process)));
   xbt_assert(mc_model_checker == nullptr);
@@ -94,6 +99,38 @@ Session::~Session()
   this->close();
 }
 
+void Session::initialize()
+{
+  xbt_assert(initialSnapshot_ == nullptr);
+  mc_model_checker->wait_for_requests();
+  initialSnapshot_ = simgrid::mc::take_snapshot(0);
+}
+
+void Session::execute(Transition const& transition)
+{
+  modelChecker_->handle_simcall(transition);
+  modelChecker_->wait_for_requests();
+}
+
+void Session::restoreInitialState()
+{
+  simgrid::mc::restore_snapshot(this->initialSnapshot_);
+}
+
+void Session::logState()
+{
+  mc_model_checker->getChecker()->logState();
+
+  if ((_sg_mc_dot_output_file != nullptr) && (_sg_mc_dot_output_file[0] != '\0')) {
+    fprintf(dot_output, "}\n");
+    fclose(dot_output);
+  }
+  if (getenv("SIMGRID_MC_SYSTEM_STATISTICS")){
+    int ret=system("free");
+    if(ret!=0)XBT_WARN("system call did not return 0, but %d",ret);
+  }
+}
+
 // static
 Session* Session::fork(std::function<void(void)> code)
 {
@@ -104,7 +141,7 @@ Session* Session::fork(std::function<void(void)> code)
   int sockets[2];
   res = socketpair(AF_LOCAL, SOCK_DGRAM | SOCK_CLOEXEC, 0, sockets);
   if (res == -1)
-    throw simgrid::xbt::errno_error(errno, "Could not create socketpair");
+    throw simgrid::xbt::errno_error("Could not create socketpair");
 
   pid_t pid = do_fork([&] {
     ::close(sockets[1]);
@@ -137,6 +174,7 @@ Session* Session::spawnvp(const char *path, char *const argv[])
 
 void Session::close()
 {
+  initialSnapshot_ = nullptr;
   if (modelChecker_) {
     modelChecker_->shutdown();
     modelChecker_ = nullptr;
@@ -144,5 +182,7 @@ void Session::close()
   }
 }
 
+simgrid::mc::Session* session;
+
+}
 }
-}
\ No newline at end of file