Call MSG_process_userdata_init if available to fix per-thread data

configure.ac

@@ -176,7 +176,7 @@ if test x$enable_simgrid = xyes ; then
 	AC_CHECK_TYPES([smx_actor_t], [AC_DEFINE([STARPU_HAVE_SMX_ACTOR_T], [1], [Define to 1 if you have the smx_actor_t type.])], [], [[#include <simgrid/simix.h>]])
 
 	# Latest functions
-	AC_CHECK_FUNCS([MSG_process_attach MSG_zone_get_hosts MSG_process_self_name])
+	AC_CHECK_FUNCS([MSG_process_attach MSG_zone_get_hosts MSG_process_self_name MSG_process_userdata_init])
 	AC_CHECK_FUNCS([xbt_mutex_try_acquire smpi_process_set_user_data sg_zone_get_by_name sg_link_name sg_host_route sg_host_self sg_host_speed simcall_process_create sg_config_continue_after_help])
 	AC_CHECK_FUNCS([xbt_barrier_init], [AC_DEFINE([STARPU_SIMGRID_HAVE_XBT_BARRIER_INIT], [1], [Define to 1 if you have the `xbt_barrier_init' function.])])
 	AC_CHECK_DECLS([smpi_process_set_user_data], [], [], [[#include <smpi/smpi.h>]])

src/core/simgrid.c

@@ -391,6 +391,9 @@ void _starpu_simgrid_init_early(int *argc STARPU_ATTRIBUTE_UNUSED, char ***argv
 #ifndef STARPU_STATIC_ONLY
 		_STARPU_ERROR("Simgrid currently does not support privatization for dynamically-linked libraries in SMPI. Please reconfigure and build StarPU with --disable-shared");
 #endif
+#ifdef HAVE_MSG_PROCESS_USERDATA_INIT
+		MSG_process_userdata_init();
+#endif
 		void **tsd;
 		_STARPU_CALLOC(tsd, MAX_TSD+1, sizeof(void*));
 		MSG_process_set_data(MSG_process_self(), tsd);