[mc] Remove useless declarations

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

diff --git a/src/mc/simgrid_mc.cpp b/src/mc/simgrid_mc.cpp
index 2b1f204..f56cc71 100644 (file)
--- a/src/mc/simgrid_mc.cpp
+++ b/src/mc/simgrid_mc.cpp
@@ -1,4 +1,4 @@
-  /* Copyright (c) 2015. The SimGrid Team.
+/* Copyright (c) 2015. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -18,7 +18,10 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/wait.h>
+
+#ifdef __linux__
 #include <sys/prctl.h>
+#endif
 
 #include <xbt/log.h>
 
@@ -35,15 +38,18 @@
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_main, mc, "Entry point for simgrid-mc");
 
-static const bool trace = true;
-
 static int do_child(int socket, char** argv)
 {
   XBT_DEBUG("Inside the child process PID=%i", (int) getpid());
+
+#ifdef __linux__
+  // Make sure we do not outlive our parent:
   if (prctl(PR_SET_PDEATHSIG, SIGHUP) != 0) {
     std::perror("simgrid-mc");
     return MC_SERVER_ERROR;
   }
+#endif
+
   int res;
 
   // Remove CLOEXEC in order to pass the socket to the exec-ed program:
@@ -62,6 +68,11 @@ static int do_child(int socket, char** argv)
   // Set environment:
   setenv(MC_ENV_VARIABLE, "1", 1);
 
+  // Disable lazy relocation in the model-ched 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)
@@ -108,6 +119,8 @@ static char** argvdup(int argc, char** argv)
 
 int main(int argc, char** argv)
 {
+  _sg_do_model_check = 1;
+
   // We need to keep the original parameters in order to pass them to the
   // model-checked process:
   int argc_copy = argc;
@@ -118,25 +131,6 @@ int main(int argc, char** argv)
   if (argc < 2)
     xbt_die("Missing arguments.\n");
 
-  bool server_mode = true;
-  char* env = std::getenv("SIMGRID_MC_MODE");
-  if (env) {
-    if (std::strcmp(env, "server") == 0)
-      server_mode = true;
-    else if (std::strcmp(env, "standalone") == 0)
-      server_mode = false;
-    else
-      xbt_die("Unrecognised value for SIMGRID_MC_MODE (server/standalone)");
-  }
-
-  if (!server_mode) {
-    setenv(MC_ENV_VARIABLE, "1", 1);
-    execvp(argv[1], argv+1);
-
-    std::perror("simgrid-mc");
-    return 127;
-  }
-
   // Create a AF_LOCAL socketpair:
   int res;