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-rw-r--r--erts/emulator/beam/erl_nif.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 62798bb2c1..1072e25033 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1484,6 +1484,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
Eterm ret = am_ok;
int veto;
struct erl_module_nif* lib = NULL;
+ int reload_warning = 0;
len = list_length(BIF_ARG_1);
if (len < 0) {
@@ -1623,6 +1624,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
else {
mod->nif->entry = NULL; /* to prevent 'unload' callback */
erts_unload_nif(mod->nif);
+ reload_warning = 1;
}
}
else {
@@ -1691,6 +1693,15 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_free(ERTS_ALC_T_TMP, lib_name);
+
+ if (reload_warning) {
+ erts_dsprintf_buf_t* dsbufp = erts_create_logger_dsbuf();
+ erts_dsprintf(dsbufp,
+ "Repeated calls to erlang:load_nif from module '%T'.\n\n"
+ "The NIF reload mechanism is deprecated and must not "
+ "be used in production systems.\n", mod_atom);
+ erts_send_warning_to_logger(BIF_P->group_leader, dsbufp);
+ }
BIF_RET(ret);
}