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Diffstat (limited to 'erts/emulator/beam/erl_nif.c')
-rw-r--r--erts/emulator/beam/erl_nif.c121
1 files changed, 33 insertions, 88 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index b53d3d4c19..7442e99cb3 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -3145,7 +3145,6 @@ static ErlNifFunc* next_func(ErlNifEntry* entry, int* incrp, ErlNifFunc* func)
BIF_RETTYPE load_nif_2(BIF_ALIST_2)
{
static const char bad_lib[] = "bad_lib";
- static const char reload[] = "reload";
static const char upgrade[] = "upgrade";
char* lib_name = NULL;
void* handle = NULL;
@@ -3162,7 +3161,6 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
Eterm ret = am_ok;
int veto;
struct erl_module_nif* lib = NULL;
- int reload_warning = 0;
struct erl_module_instance* this_mi;
struct erl_module_instance* prev_mi;
@@ -3222,8 +3220,12 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
this_mi = module_p->on_load;
}
- if (init_func == NULL &&
- (err=erts_sys_ddll_open(lib_name, &handle, &errdesc)) != ERL_DE_NO_ERROR) {
+ if (this_mi->nif != NULL) {
+ ret = load_nif_error(BIF_P,"reload","NIF library already loaded"
+ " (reload disallowed since OTP 20).");
+ }
+ else if (init_func == NULL &&
+ (err=erts_sys_ddll_open(lib_name, &handle, &errdesc)) != ERL_DE_NO_ERROR) {
const char slogan[] = "Failed to load NIF library";
if (strstr(errdesc.str, lib_name) != NULL) {
ret = load_nif_error(BIF_P, "load_failed", "%s: '%s'", slogan, errdesc.str);
@@ -3312,7 +3314,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
goto error;
}
- /* Call load, reload or upgrade:
+ /* Call load or upgrade:
*/
@@ -3324,82 +3326,33 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
ASSERT(opened_rt_list == NULL);
lib->mod = module_p;
env.mod_nif = lib;
- if (this_mi->nif != NULL) { /*************** Reload ******************/
- /*
- * Repeated load_nif calls from same Erlang module instance ("reload")
- * is deprecated and was only ment as a development feature not to
- * be used in production systems. (See warning below)
- */
- int k, old_incr = 0;
- ErlNifFunc* old_func;
- lib->priv_data = this_mi->nif->priv_data;
-
- ASSERT(this_mi->nif->entry != NULL);
- if (entry->reload == NULL) {
- ret = load_nif_error(BIF_P,reload,"Reload not supported by this NIF library.");
- goto error;
- }
- /* Check that no NIF is removed */
- old_func = this_mi->nif->entry->funcs;
- for (k=0; k < this_mi->nif->entry->num_of_funcs; k++) {
- int incr = 0;
- ErlNifFunc* f = entry->funcs;
- for (i=0; i < entry->num_of_funcs; i++) {
- if (old_func->arity == f->arity
- && sys_strcmp(old_func->name, f->name) == 0) {
- break;
- }
- f = next_func(entry, &incr, f);
- }
- if (i == entry->num_of_funcs) {
- ret = load_nif_error(BIF_P,reload,"Reloaded library missing "
- "function %T:%s/%u\r\n", mod_atom,
- old_func->name, old_func->arity);
- goto error;
- }
- old_func = next_func(this_mi->nif->entry, &old_incr, old_func);
- }
- erts_pre_nif(&env, BIF_P, lib, NULL);
- veto = entry->reload(&env, &lib->priv_data, BIF_ARG_2);
- erts_post_nif(&env);
- if (veto) {
- ret = load_nif_error(BIF_P, reload, "Library reload-call unsuccessful.");
- }
- else {
- commit_opened_resource_types(lib);
- this_mi->nif->entry = NULL; /* to prevent 'unload' callback */
- erts_unload_nif(this_mi->nif);
- reload_warning = 1;
- }
+
+ lib->priv_data = NULL;
+ if (prev_mi->nif != NULL) { /**************** Upgrade ***************/
+ void* prev_old_data = prev_mi->nif->priv_data;
+ if (entry->upgrade == NULL) {
+ ret = load_nif_error(BIF_P, upgrade, "Upgrade not supported by this NIF library.");
+ goto error;
+ }
+ erts_pre_nif(&env, BIF_P, lib, NULL);
+ veto = entry->upgrade(&env, &lib->priv_data, &prev_mi->nif->priv_data, BIF_ARG_2);
+ erts_post_nif(&env);
+ if (veto) {
+ prev_mi->nif->priv_data = prev_old_data;
+ ret = load_nif_error(BIF_P, upgrade, "Library upgrade-call unsuccessful.");
+ }
+ else
+ commit_opened_resource_types(lib);
}
- else {
- lib->priv_data = NULL;
- if (prev_mi->nif != NULL) { /**************** Upgrade ***************/
- void* prev_old_data = prev_mi->nif->priv_data;
- if (entry->upgrade == NULL) {
- ret = load_nif_error(BIF_P, upgrade, "Upgrade not supported by this NIF library.");
- goto error;
- }
- erts_pre_nif(&env, BIF_P, lib, NULL);
- veto = entry->upgrade(&env, &lib->priv_data, &prev_mi->nif->priv_data, BIF_ARG_2);
- erts_post_nif(&env);
- if (veto) {
- prev_mi->nif->priv_data = prev_old_data;
- ret = load_nif_error(BIF_P, upgrade, "Library upgrade-call unsuccessful.");
- }
- else
- commit_opened_resource_types(lib);
- }
- else if (entry->load != NULL) { /********* Initial load ***********/
- erts_pre_nif(&env, BIF_P, lib, NULL);
- veto = entry->load(&env, &lib->priv_data, BIF_ARG_2);
- erts_post_nif(&env);
- if (veto) {
- ret = load_nif_error(BIF_P, "load", "Library load-call unsuccessful.");
- }
- else
- commit_opened_resource_types(lib);
- }
+ else if (entry->load != NULL) { /********* Initial load ***********/
+ erts_pre_nif(&env, BIF_P, lib, NULL);
+ veto = entry->load(&env, &lib->priv_data, BIF_ARG_2);
+ erts_post_nif(&env);
+ if (veto) {
+ ret = load_nif_error(BIF_P, "load", "Library load-call unsuccessful.");
+ }
+ else
+ commit_opened_resource_types(lib);
}
if (ret == am_ok) {
/*
@@ -3458,14 +3411,6 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
erts_release_code_write_permission();
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);
}
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