X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/819942b4ca0be7a019133420d20004abf80de221..4d9809aa64447811ca65a1242d4f9e07972c6472:/src/smpi/internals/smpi_global.cpp

diff --git a/src/smpi/internals/smpi_global.cpp b/src/smpi/internals/smpi_global.cpp
index f63b4d9095..dcc7d0fed2 100644
--- a/src/smpi/internals/smpi_global.cpp
+++ b/src/smpi/internals/smpi_global.cpp
@@ -31,7 +31,7 @@
 #   define MAC_OS_X_VERSION_10_12 101200
 # endif
 # define HAVE_WORKING_MMAP (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_12)
-#elif defined(__FreeBSD__)
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 # define HAVE_WORKING_MMAP 0
 #else
 # define HAVE_WORKING_MMAP 1
@@ -129,7 +129,7 @@ MPI_Comm smpi_process_comm_self(){
 }
 
 void smpi_process_init(int *argc, char ***argv){
-  simgrid::smpi::ActorExt::init(argc, argv);
+  simgrid::smpi::ActorExt::init();
 }
 
 void * smpi_process_get_user_data(){
@@ -423,12 +423,17 @@ typedef std::function<int(int argc, char *argv[])> smpi_entry_point_type;
 typedef int (* smpi_c_entry_point_type)(int argc, char **argv);
 typedef void (*smpi_fortran_entry_point_type)();
 
-static int smpi_run_entry_point(smpi_entry_point_type entry_point, std::vector<std::string> args)
+static int smpi_run_entry_point(smpi_entry_point_type entry_point, const std::string& executable_path,
+                                std::vector<std::string> args)
 {
   // copy C strings, we need them writable
   std::vector<char*>* args4argv = new std::vector<char*>(args.size());
   std::transform(begin(args), end(args), begin(*args4argv), [](const std::string& s) { return xbt_strdup(s.c_str()); });
 
+  // set argv[0] to executable_path
+  xbt_free((*args4argv)[0]);
+  (*args4argv)[0] = xbt_strdup(executable_path.c_str());
+
 #if !SMPI_IFORT
   // take a copy of args4argv to keep reference of the allocated strings
   const std::vector<char*> args2str(*args4argv);
@@ -437,7 +442,7 @@ static int smpi_run_entry_point(smpi_entry_point_type entry_point, std::vector<s
   args4argv->push_back(nullptr);
   char** argv = args4argv->data();
 
-  simgrid::smpi::ActorExt::init(&argc, &argv);
+  simgrid::smpi::ActorExt::init();
 #if SMPI_IFORT
   for_rtl_init_ (&argc, argv);
 #elif SMPI_FLANG
@@ -492,31 +497,35 @@ static void smpi_copy_file(std::string src, std::string target, off_t fdin_size)
   xbt_assert(fdout >= 0, "Cannot write into %s", target.c_str());
 
   XBT_DEBUG("Copy %" PRIdMAX " bytes into %s", static_cast<intmax_t>(fdin_size), target.c_str());
+  bool slow_copy = true;
 #if HAVE_SENDFILE
   ssize_t sent_size = sendfile(fdout, fdin, NULL, fdin_size);
-  xbt_assert(sent_size == fdin_size,
-             "Error while copying %s: only %zd bytes copied instead of %" PRIdMAX " (errno: %d -- %s)", target.c_str(),
-             sent_size, static_cast<intmax_t>(fdin_size), errno, strerror(errno));
-#else
-  const int bufsize = 1024 * 1024 * 4;
-  char buf[bufsize];
-  while (int got = read(fdin, buf, bufsize)) {
-    if (got == -1) {
-      xbt_assert(errno == EINTR, "Cannot read from %s", src.c_str());
-    } else {
-      char* p  = buf;
-      int todo = got;
-      while (int done = write(fdout, p, todo)) {
-        if (done == -1) {
-          xbt_assert(errno == EINTR, "Cannot write into %s", target.c_str());
-        } else {
-          p += done;
-          todo -= done;
+  if (sent_size == fdin_size)
+    slow_copy = false;
+  else if (sent_size != -1 || errno != ENOSYS)
+    xbt_die("Error while copying %s: only %zd bytes copied instead of %" PRIdMAX " (errno: %d -- %s)", target.c_str(),
+            sent_size, static_cast<intmax_t>(fdin_size), errno, strerror(errno));
+#endif
+  if (slow_copy) {
+    const int bufsize = 1024 * 1024 * 4;
+    char buf[bufsize];
+    while (int got = read(fdin, buf, bufsize)) {
+      if (got == -1) {
+        xbt_assert(errno == EINTR, "Cannot read from %s", src.c_str());
+      } else {
+        char* p  = buf;
+        int todo = got;
+        while (int done = write(fdout, p, todo)) {
+          if (done == -1) {
+            xbt_assert(errno == EINTR, "Cannot write into %s", target.c_str());
+          } else {
+            p += done;
+            todo -= done;
+          }
         }
       }
     }
   }
-#endif
   close(fdin);
   close(fdout);
 }
@@ -535,7 +544,7 @@ static int visit_libs(struct dl_phdr_info* info, size_t, void* data)
 }
 #endif
 
-static void smpi_init_privatization_dlopen(std::string executable)
+static void smpi_init_privatization_dlopen(const std::string& executable)
 {
   // Prepare the copy of the binary (get its size)
   struct stat fdin_stat;
@@ -571,7 +580,6 @@ static void smpi_init_privatization_dlopen(std::string executable)
 
   simix_global->default_function = [executable, fdin_size](std::vector<std::string> args) {
     return std::function<void()>([executable, fdin_size, args] {
-
       // Copy the dynamic library:
       std::string target_executable =
           executable + "_" + std::to_string(getpid()) + "_" + std::to_string(rank) + ".so";
@@ -624,12 +632,12 @@ static void smpi_init_privatization_dlopen(std::string executable)
       smpi_entry_point_type entry_point = smpi_resolve_function(handle);
       if (not entry_point)
         xbt_die("Could not resolve entry point");
-      smpi_run_entry_point(entry_point, args);
+      smpi_run_entry_point(entry_point, executable, args);
     });
   };
 }
 
-static void smpi_init_privatization_no_dlopen(std::string executable)
+static void smpi_init_privatization_no_dlopen(const std::string& executable)
 {
   if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
     smpi_prepare_global_memory_segment();
@@ -644,8 +652,9 @@ static void smpi_init_privatization_no_dlopen(std::string executable)
     smpi_backup_global_memory_segment();
 
   // Execute the same entry point for each simulated process:
-  simix_global->default_function = [entry_point](std::vector<std::string> args) {
-    return std::function<void()>([entry_point, args] { smpi_run_entry_point(entry_point, args); });
+  simix_global->default_function = [entry_point, executable](std::vector<std::string> args) {
+    return std::function<void()>(
+        [entry_point, executable, args] { smpi_run_entry_point(entry_point, executable, args); });
   };
 }