X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/dccf1b41e9c7b5a696f01abceaa2779fe65f154f..HEAD:/src/mc/Session.cpp

diff --git a/src/mc/Session.cpp b/src/mc/Session.cpp
deleted file mode 100644
index 260edd47eb..0000000000
--- a/src/mc/Session.cpp
+++ /dev/null
@@ -1,188 +0,0 @@
-/* Copyright (c) 2015-2016. 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 <fcntl.h>
-#include <signal.h>
-
-#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");
-
-namespace simgrid {
-namespace mc {
-
-static void setup_child_environment(int socket)
-{
-#ifdef __linux__
-  // Make sure we do not outlive our parent:
-  sigset_t mask;
-  sigemptyset (&mask);
-  if (sigprocmask(SIG_SETMASK, &mask, nullptr) < 0)
-    throw simgrid::xbt::errno_error("Could not unblock signals");
-  if (prctl(PR_SET_PDEATHSIG, SIGHUP) != 0)
-    throw simgrid::xbt::errno_error("Could not PR_SET_PDEATHSIG");
-#endif
-
-  int res;
-
-  // 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("Could not remove CLOEXEC for socket");
-
-  // Set environment:
-  setenv(MC_ENV_VARIABLE, "1", 1);
-
-  // Disable lazy relocation in the model-checked process.
-  // We don't want the model-checked process to modify its .got.plt during
-  // snapshot.
-  setenv("LC_BIND_NOW", "1", 1);
-
-  char buffer[64];
-  res = std::snprintf(buffer, sizeof(buffer), "%i", socket);
-  if ((size_t) res >= sizeof(buffer) || res == -1)
-    std::abort();
-  setenv(MC_ENV_SOCKET_FD, buffer, 1);
-}
-
-/** Execute some code in a forked process */
-template<class F>
-static inline
-pid_t do_fork(F code)
-{
-  pid_t pid = fork();
-  if (pid < 0)
-    throw simgrid::xbt::errno_error("Could not fork model-checked process");
-  if (pid != 0)
-    return pid;
-
-  // Child-process:
-  try {
-    code();
-    _exit(EXIT_SUCCESS);
-  }
-  catch(...) {
-    // The callback should catch exceptions:
-    std::terminate();
-  }
-}
-
-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(
-    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);
-  mc_model_checker = modelChecker_.get();
-  mc_model_checker->start();
-}
-
-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)
-{
-  // Create a AF_LOCAL socketpair used for exchanging messages
-  // bewteen the model-checker process (ourselves) and the model-checked
-  // process:
-  int res;
-  int sockets[2];
-  res = socketpair(AF_LOCAL, SOCK_DGRAM | SOCK_CLOEXEC, 0, sockets);
-  if (res == -1)
-    throw simgrid::xbt::errno_error("Could not create socketpair");
-
-  pid_t pid = do_fork([&] {
-    ::close(sockets[1]);
-    setup_child_environment(sockets[0]);
-    code();
-    xbt_die("The model-checked process failed to exec()");
-  });
-
-  // Parent (model-checker):
-  ::close(sockets[0]);
-
-  return new Session(pid, sockets[1]);
-}
-
-// static
-Session* Session::spawnv(const char *path, char *const argv[])
-{
-  return Session::fork([&] {
-    execv(path, argv);
-  });
-}
-
-// static
-Session* Session::spawnvp(const char *file, char *const argv[])
-{
-  return Session::fork([&] {
-    execvp(file, argv);
-  });
-}
-
-void Session::close()
-{
-  initialSnapshot_ = nullptr;
-  if (modelChecker_) {
-    modelChecker_->shutdown();
-    modelChecker_ = nullptr;
-    mc_model_checker = nullptr;
-  }
-}
-
-simgrid::mc::Session* session;
-
-}
-}