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-rw-r--r--erts/emulator/beam/erl_nif.c332
1 files changed, 268 insertions, 64 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 7095ae03e7..75de00d4c1 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -48,7 +48,7 @@ struct erl_module_nif {
struct enif_entry_t* entry;
erts_refc_t rt_cnt; /* number of resource types */
erts_refc_t rt_dtor_cnt; /* number of resource types with destructors */
- int is_orphan; /* if erlang module has been purged */
+ Module* mod; /* Can be NULL if orphan with dtor-resources left */
};
#ifdef DEBUG
@@ -61,6 +61,10 @@ static void add_readonly_check(ErlNifEnv*, unsigned char* ptr, unsigned sz);
# define ADD_READONLY_CHECK(ENV,PTR,SIZE) ((void)0)
#endif
+#ifdef DEBUG
+static int is_offheap(const ErlOffHeap* off_heap);
+#endif
+
#define MIN_HEAP_FRAG_SZ 200
static Eterm* alloc_heap_heavy(ErlNifEnv* env, unsigned need, Eterm* hp);
@@ -84,7 +88,8 @@ static Eterm* alloc_heap_heavy(ErlNifEnv* env, unsigned need, Eterm* hp)
HEAP_TOP(env->proc) = env->hp;
}
else {
- HRelease(env->proc, env->hp_end, env->hp);
+ env->heap_frag->used_size = hp - env->heap_frag->mem;
+ ASSERT(env->heap_frag->used_size <= env->heap_frag->alloc_size);
}
frag_sz = need + MIN_HEAP_FRAG_SZ;
hp = erts_heap_alloc(env->proc, frag_sz);
@@ -143,8 +148,9 @@ void erts_post_nif(ErlNifEnv* env)
}
else {
ASSERT(env->hp_end != HEAP_LIMIT(env->proc));
- ASSERT(env->hp_end - env->hp <= env->heap_frag->size);
- HRelease(env->proc, env->hp_end, env->hp);
+ ASSERT(env->hp_end - env->hp <= env->heap_frag->alloc_size);
+ env->heap_frag->used_size = env->hp - env->heap_frag->mem;
+ ASSERT(env->heap_frag->used_size <= env->heap_frag->alloc_size);
}
free_tmp_objs(env);
}
@@ -158,7 +164,7 @@ static void post_nif_noproc(ErlNifEnv* env)
/* Flush out our cached heap pointers to allow an ordinary HAlloc
*/
-static void enable_halloc(ErlNifEnv* env)
+static void flush_env(ErlNifEnv* env)
{
if (env->heap_frag == NULL) {
ASSERT(env->hp_end == HEAP_LIMIT(env->proc));
@@ -168,14 +174,15 @@ static void enable_halloc(ErlNifEnv* env)
}
else {
ASSERT(env->hp_end != HEAP_LIMIT(env->proc));
- ASSERT(env->hp_end - env->hp <= env->heap_frag->size);
- HRelease(env->proc, env->hp_end, env->hp);
+ ASSERT(env->hp_end - env->hp <= env->heap_frag->alloc_size);
+ env->heap_frag->used_size = env->hp - env->heap_frag->mem;
+ ASSERT(env->heap_frag->used_size <= env->heap_frag->alloc_size);
}
}
-/* Restore cached heap pointers
+/* Restore cached heap pointers to allow alloc_heap again.
*/
-static void disable_halloc(ErlNifEnv* env)
+static void cache_env(ErlNifEnv* env)
{
if (env->heap_frag == NULL) {
ASSERT(env->hp_end == HEAP_LIMIT(env->proc));
@@ -185,34 +192,192 @@ static void disable_halloc(ErlNifEnv* env)
}
else {
ASSERT(env->hp_end != HEAP_LIMIT(env->proc));
- ASSERT(env->hp_end - env->hp <= env->heap_frag->size);
+ ASSERT(env->hp_end - env->hp <= env->heap_frag->alloc_size);
env->heap_frag = MBUF(env->proc);
ASSERT(env->heap_frag != NULL);
env->hp = env->heap_frag->mem + env->heap_frag->used_size;
- env->hp_end = env->heap_frag->mem + env->heap_frag->size;
+ env->hp_end = env->heap_frag->mem + env->heap_frag->alloc_size;
}
}
-
void* enif_priv_data(ErlNifEnv* env)
{
return env->mod_nif->priv_data;
}
-void* enif_alloc(ErlNifEnv* env, size_t size)
+void* enif_alloc(size_t size)
{
return erts_alloc_fnf(ERTS_ALC_T_NIF, (Uint) size);
}
-void* enif_realloc(ErlNifEnv* env, void* ptr, size_t size)
+void* enif_realloc(void* ptr, size_t size)
{
return erts_realloc_fnf(ERTS_ALC_T_NIF, ptr, size);
}
-void enif_free(ErlNifEnv* env, void* ptr)
+void enif_free(void* ptr)
{
erts_free(ERTS_ALC_T_NIF, ptr);
}
+struct enif_msg_environment_t
+{
+ ErlNifEnv env;
+ Process phony_proc;
+};
+
+ErlNifEnv* enif_alloc_env(void)
+{
+ struct enif_msg_environment_t* msg_env =
+ erts_alloc_fnf(ERTS_ALC_T_NIF, sizeof(struct enif_msg_environment_t));
+ Eterm* phony_heap = (Eterm*) msg_env; /* dummy non-NULL ptr */
+
+ msg_env->env.hp = phony_heap;
+ msg_env->env.hp_end = phony_heap;
+ msg_env->env.heap_frag = NULL;
+ msg_env->env.mod_nif = NULL;
+ msg_env->env.tmp_obj_list = (struct enif_tmp_obj_t*) 1; /* invalid non-NULL */
+ msg_env->env.proc = &msg_env->phony_proc;
+ memset(&msg_env->phony_proc, 0, sizeof(Process));
+ HEAP_START(&msg_env->phony_proc) = phony_heap;
+ HEAP_TOP(&msg_env->phony_proc) = phony_heap;
+ HEAP_LIMIT(&msg_env->phony_proc) = phony_heap;
+ HEAP_END(&msg_env->phony_proc) = phony_heap;
+ MBUF(&msg_env->phony_proc) = NULL;
+ msg_env->phony_proc.id = ERTS_INVALID_PID;
+#ifdef FORCE_HEAP_FRAGS
+ msg_env->phony_proc.space_verified = 0;
+ msg_env->phony_proc.space_verified_from = NULL;
+#endif
+ return &msg_env->env;
+}
+void enif_free_env(ErlNifEnv* env)
+{
+ enif_clear_env(env);
+ erts_free(ERTS_ALC_T_NIF, env);
+}
+
+static ERTS_INLINE void clear_offheap(ErlOffHeap* oh)
+{
+ oh->mso = NULL;
+ oh->externals = NULL;
+ oh->funs = NULL;
+ oh->overhead = 0;
+}
+
+void enif_clear_env(ErlNifEnv* env)
+{
+ struct enif_msg_environment_t* menv = (struct enif_msg_environment_t*)env;
+ Process* p = &menv->phony_proc;
+ ASSERT(p == menv->env.proc);
+ ASSERT(p->id == ERTS_INVALID_PID);
+ ASSERT(MBUF(p) == menv->env.heap_frag);
+ if (MBUF(p) != NULL) {
+ erts_cleanup_offheap(&MSO(p));
+ clear_offheap(&MSO(p));
+ free_message_buffer(MBUF(p));
+ MBUF(p) = NULL;
+ menv->env.heap_frag = NULL;
+ }
+ ASSERT(HEAP_TOP(p) == HEAP_END(p));
+ menv->env.hp = menv->env.hp_end = HEAP_TOP(p);
+
+ ASSERT(!is_offheap(&MSO(p)));
+}
+int enif_send(ErlNifEnv* env, const ErlNifPid* to_pid,
+ ErlNifEnv* msg_env, ERL_NIF_TERM msg)
+{
+ struct enif_msg_environment_t* menv = (struct enif_msg_environment_t*)msg_env;
+ ErtsProcLocks rp_locks = 0;
+ Process* rp;
+ Process* c_p;
+ ErlHeapFragment* frags;
+#if defined(ERTS_ENABLE_LOCK_CHECK) && defined(ERTS_SMP)
+ ErtsProcLocks rp_had_locks;
+#endif
+ Eterm receiver = to_pid->pid;
+ int flush_me = 0;
+
+ if (env != NULL) {
+ c_p = env->proc;
+ if (receiver == c_p->id) {
+ rp_locks = ERTS_PROC_LOCK_MAIN;
+ flush_me = 1;
+ }
+ }
+ else {
+#ifdef ERTS_SMP
+ c_p = NULL;
+#else
+ erl_exit(ERTS_ABORT_EXIT,"enif_send: env==NULL on non-SMP VM");
+#endif
+ }
+
+#if defined(ERTS_ENABLE_LOCK_CHECK) && defined(ERTS_SMP)
+ rp_had_locks = rp_locks;
+#endif
+ rp = erts_pid2proc_opt(c_p, ERTS_PROC_LOCK_MAIN,
+ receiver, rp_locks, ERTS_P2P_FLG_SMP_INC_REFC);
+ if (rp == NULL) {
+ ASSERT(env == NULL || receiver != c_p->id);
+ return 0;
+ }
+ flush_env(msg_env);
+ frags = menv->env.heap_frag;
+ ASSERT(frags == MBUF(&menv->phony_proc));
+ if (frags != NULL) {
+ /* Move all offheap's from phony proc to the first fragment.
+ Quick and dirty, but erts_move_msg_mbuf_to_heap doesn't care. */
+ ASSERT(!is_offheap(&frags->off_heap));
+ frags->off_heap = MSO(&menv->phony_proc);
+ clear_offheap(&MSO(&menv->phony_proc));
+ menv->env.heap_frag = NULL;
+ MBUF(&menv->phony_proc) = NULL;
+ }
+ ASSERT(!is_offheap(&MSO(&menv->phony_proc)));
+
+ if (flush_me) {
+ flush_env(env); /* Needed for ERTS_HOLE_CHECK */
+ }
+ erts_queue_message(rp, &rp_locks, frags, msg, am_undefined);
+ if (rp_locks) {
+ ERTS_SMP_LC_ASSERT(rp_locks == (rp_had_locks | (ERTS_PROC_LOCK_MSGQ |
+ ERTS_PROC_LOCK_STATUS)));
+ erts_smp_proc_unlock(rp, (ERTS_PROC_LOCK_MSGQ | ERTS_PROC_LOCK_STATUS));
+ }
+ erts_smp_proc_dec_refc(rp);
+ if (flush_me) {
+ cache_env(env);
+ }
+ return 1;
+}
+
+ERL_NIF_TERM enif_make_copy(ErlNifEnv* dst_env, ERL_NIF_TERM src_term)
+{
+ Uint sz;
+ Eterm* hp;
+ sz = size_object(src_term);
+ hp = alloc_heap(dst_env, sz);
+ return copy_struct(src_term, sz, &hp, &MSO(dst_env->proc));
+}
+
+
+#ifdef DEBUG
+static int is_offheap(const ErlOffHeap* oh)
+{
+ return oh->mso != NULL || oh->funs != NULL || oh->externals != NULL;
+}
+#endif
+
+ErlNifPid* enif_self(ErlNifEnv* caller_env, ErlNifPid* pid)
+{
+ pid->pid = caller_env->proc->id;
+ return pid;
+}
+int enif_get_local_pid(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifPid* pid)
+{
+ return is_internal_pid(term) ? (pid->pid=term, 1) : 0;
+}
+
int enif_is_atom(ErlNifEnv* env, ERL_NIF_TERM term)
{
return is_atom(term);
@@ -324,7 +489,7 @@ int enif_inspect_iolist_as_binary(ErlNifEnv* env, Eterm term, ErlNifBinary* bin)
return 1;
}
-int enif_alloc_binary(ErlNifEnv* env, unsigned size, ErlNifBinary* bin)
+int enif_alloc_binary(size_t size, ErlNifBinary* bin)
{
Binary* refbin;
@@ -343,7 +508,7 @@ int enif_alloc_binary(ErlNifEnv* env, unsigned size, ErlNifBinary* bin)
return 1;
}
-int enif_realloc_binary(ErlNifEnv* env, ErlNifBinary* bin, unsigned size)
+int enif_realloc_binary(ErlNifBinary* bin, size_t size)
{
if (bin->ref_bin != NULL) {
Binary* oldbin;
@@ -361,15 +526,15 @@ int enif_realloc_binary(ErlNifEnv* env, ErlNifBinary* bin, unsigned size)
}
else {
unsigned char* old_data = bin->data;
- unsigned cpy_sz = (size < bin->size ? size : bin->size);
- enif_alloc_binary(env, size, bin);
+ size_t cpy_sz = (size < bin->size ? size : bin->size);
+ enif_alloc_binary(size, bin);
sys_memcpy(bin->data, old_data, cpy_sz);
}
return 1;
}
-void enif_release_binary(ErlNifEnv* env, ErlNifBinary* bin)
+void enif_release_binary(ErlNifBinary* bin)
{
if (bin->ref_bin != NULL) {
Binary* refbin = bin->ref_bin;
@@ -385,21 +550,21 @@ void enif_release_binary(ErlNifEnv* env, ErlNifBinary* bin)
#endif
}
-unsigned char* enif_make_new_binary(ErlNifEnv* env, unsigned size,
+unsigned char* enif_make_new_binary(ErlNifEnv* env, size_t size,
ERL_NIF_TERM* termp)
{
- enable_halloc(env);
+ flush_env(env);
*termp = new_binary(env->proc, NULL, size);
- disable_halloc(env);
+ cache_env(env);
return binary_bytes(*termp);
}
-int enif_is_identical(ErlNifEnv* env, Eterm lhs, Eterm rhs)
+int enif_is_identical(Eterm lhs, Eterm rhs)
{
return EQ(lhs,rhs);
}
-int enif_compare(ErlNifEnv* env, Eterm lhs, Eterm rhs)
+int enif_compare(Eterm lhs, Eterm rhs)
{
return cmp(lhs,rhs);
}
@@ -478,15 +643,15 @@ Eterm enif_make_binary(ErlNifEnv* env, ErlNifBinary* bin)
return bin_term;
}
else {
- enable_halloc(env);
+ flush_env(env);
bin->bin_term = new_binary(env->proc, bin->data, bin->size);
- disable_halloc(env);
+ cache_env(env);
return bin->bin_term;
}
}
Eterm enif_make_sub_binary(ErlNifEnv* env, ERL_NIF_TERM bin_term,
- unsigned pos, unsigned size)
+ size_t pos, size_t size)
{
ErlSubBin* sb;
Eterm orig;
@@ -516,9 +681,11 @@ Eterm enif_make_badarg(ErlNifEnv* env)
BIF_ERROR(env->proc, BADARG);
}
-int enif_get_atom(ErlNifEnv* env, Eterm atom, char* buf, unsigned len)
+int enif_get_atom(ErlNifEnv* env, Eterm atom, char* buf, unsigned len,
+ ErlNifCharEncoding encoding)
{
Atom* ap;
+ ASSERT(encoding == ERL_NIF_LATIN1);
if (is_not_atom(atom)) {
return 0;
}
@@ -566,10 +733,8 @@ int enif_get_long(ErlNifEnv* env, Eterm term, long* ip)
#if SIZEOF_LONG == ERTS_SIZEOF_ETERM
return term_to_Sint(term, ip);
#elif SIZEOF_INT == ERTS_SIZEOF_ETERM
- Uint u;
- term_to_Sint(term, u);
- *ip = (long) u;
- return 1;
+ Sint i;
+ return term_to_Sint(term, &i) ? (*ip = (long) i, 1) : 0;
#else
# error Unknown long word size
#endif
@@ -581,10 +746,7 @@ int enif_get_ulong(ErlNifEnv* env, Eterm term, unsigned long* ip)
return term_to_Uint(term, ip);
#elif SIZEOF_INT == ERTS_SIZEOF_ETERM
Uint u;
- int r;
- r = term_to_Uint(term, &u);
- *ip = (unsigned long) u;
- return r;
+ return term_to_Uint(term, &u) ? (*ip = (unsigned long) u, 1) : 0;
#else
# error Unknown long word size
#endif
@@ -601,9 +763,11 @@ int enif_get_double(ErlNifEnv* env, Eterm term, double* dp)
return 1;
}
-int enif_get_atom_length(ErlNifEnv* env, Eterm atom, unsigned* len)
+int enif_get_atom_length(ErlNifEnv* env, Eterm atom, unsigned* len,
+ ErlNifCharEncoding enc)
{
Atom* ap;
+ ASSERT(enc == ERL_NIF_LATIN1);
if (is_not_atom(atom)) return 0;
ap = atom_tab(atom_val(atom));
*len = ap->len;
@@ -674,14 +838,16 @@ ERL_NIF_TERM enif_make_atom_len(ErlNifEnv* env, const char* name, size_t len)
return am_atom_put(name, len);
}
-int enif_make_existing_atom(ErlNifEnv* env, const char* name, ERL_NIF_TERM* atom)
+int enif_make_existing_atom(ErlNifEnv* env, const char* name, ERL_NIF_TERM* atom,
+ ErlNifCharEncoding enc)
{
- return enif_make_existing_atom_len(env, name, sys_strlen(name), atom);
+ return enif_make_existing_atom_len(env, name, sys_strlen(name), atom, enc);
}
int enif_make_existing_atom_len(ErlNifEnv* env, const char* name, size_t len,
- ERL_NIF_TERM* atom)
+ ERL_NIF_TERM* atom, ErlNifCharEncoding encoding)
{
+ ASSERT(encoding == ERL_NIF_LATIN1);
return erts_atom_get(name, len, atom);
}
@@ -841,7 +1007,8 @@ struct enif_resource_type_t
ErlNifResourceDtor* dtor; /* user destructor function */
erts_refc_t refc; /* num of resources of this type (HOTSPOT warning)
+1 for active erl_module_nif */
- char name[1];
+ Eterm module;
+ Eterm name;
};
/* dummy node in circular list */
@@ -859,14 +1026,14 @@ typedef struct enif_resource_t
#define SIZEOF_ErlNifResource(SIZE) (offsetof(ErlNifResource,data) + (SIZE))
#define DATA_TO_RESOURCE(PTR) ((ErlNifResource*)((char*)(PTR) - offsetof(ErlNifResource,data)))
-static ErlNifResourceType* find_resource_type(const char* name)
+static ErlNifResourceType* find_resource_type(Eterm module, Eterm name)
{
ErlNifResourceType* type;
for (type = resource_type_list.next;
type != &resource_type_list;
type = type->next) {
- if (sys_strcmp(type->name, name) == 0) {
+ if (type->module == module && type->name == name) {
return type;
}
}
@@ -899,33 +1066,42 @@ static void steal_resource_type(ErlNifResourceType* type)
if (type->dtor != NULL
&& erts_refc_dectest(&lib->rt_dtor_cnt, 0) == 0
- && lib->is_orphan) {
+ && lib->mod == NULL) {
/* last type with destructor gone, close orphan lib */
close_lib(lib);
}
if (erts_refc_dectest(&lib->rt_cnt, 0) == 0
- && lib->is_orphan) {
+ && lib->mod == NULL) {
erts_free(ERTS_ALC_T_NIF, lib);
}
}
ErlNifResourceType*
-enif_open_resource_type(ErlNifEnv* env, const char* type_name,
- ErlNifResourceDtor* dtor,
- enum ErlNifResourceFlags flags,
- enum ErlNifResourceFlags* tried)
+enif_open_resource_type(ErlNifEnv* env,
+ const char* module_str,
+ const char* name_str,
+ ErlNifResourceDtor* dtor,
+ ErlNifResourceFlags flags,
+ ErlNifResourceFlags* tried)
{
- ErlNifResourceType* type = find_resource_type(type_name);
- enum ErlNifResourceFlags op = flags;
+ ErlNifResourceType* type = NULL;
+ ErlNifResourceFlags op = flags;
+ Eterm module_am, name_am;
+
ASSERT(erts_smp_is_system_blocked(0));
+ ASSERT(module_str == NULL); /* for now... */
+ module_am = make_atom(env->mod_nif->mod->module);
+ name_am = enif_make_atom(env, name_str);
+
+ type = find_resource_type(module_am, name_am);
if (type == NULL) {
if (flags & ERL_NIF_RT_CREATE) {
type = erts_alloc(ERTS_ALC_T_NIF,
- sizeof(struct enif_resource_type_t)
- + sys_strlen(type_name));
+ sizeof(struct enif_resource_type_t));
type->dtor = dtor;
- sys_strcpy(type->name, type_name);
+ type->module = module_am;
+ type->name = name_am;
erts_refc_init(&type->refc, 1);
type->owner = env->mod_nif;
type->prev = &resource_type_list;
@@ -973,13 +1149,13 @@ static void nif_resource_dtor(Binary* bin)
if (erts_refc_dectest(&type->refc, 0) == 0) {
ASSERT(type->next == NULL);
ASSERT(type->owner != NULL);
- ASSERT(type->owner->is_orphan);
+ ASSERT(type->owner->mod == NULL);
steal_resource_type(type);
erts_free(ERTS_ALC_T_NIF, type);
}
}
-void* enif_alloc_resource(ErlNifEnv* env, ErlNifResourceType* type, unsigned size)
+void* enif_alloc_resource(ErlNifResourceType* type, size_t size)
{
Binary* bin = erts_create_magic_binary(SIZEOF_ErlNifResource(size), &nif_resource_dtor);
ErlNifResource* resource = ERTS_MAGIC_BIN_DATA(bin);
@@ -992,7 +1168,7 @@ void* enif_alloc_resource(ErlNifEnv* env, ErlNifResourceType* type, unsigned siz
return resource->data;
}
-void enif_release_resource(ErlNifEnv* env, void* obj)
+void enif_release_resource(void* obj)
{
ErlNifResource* resource = DATA_TO_RESOURCE(obj);
ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_DATA(resource);
@@ -1006,6 +1182,18 @@ void enif_release_resource(ErlNifEnv* env, void* obj)
}
}
+void enif_keep_resource(void* obj)
+{
+ ErlNifResource* resource = DATA_TO_RESOURCE(obj);
+ ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_DATA(resource);
+
+ ASSERT(ERTS_MAGIC_BIN_DESTRUCTOR(bin) == &nif_resource_dtor);
+#ifdef DEBUG
+ erts_refc_inc(&resource->nif_refc, 1);
+#endif
+ erts_refc_inc(&bin->binary.refc, 2);
+}
+
ERL_NIF_TERM enif_make_resource(ErlNifEnv* env, void* obj)
{
ErlNifResource* resource = DATA_TO_RESOURCE(obj);
@@ -1014,15 +1202,30 @@ ERL_NIF_TERM enif_make_resource(ErlNifEnv* env, void* obj)
return erts_mk_magic_binary_term(&hp, &MSO(env->proc), &bin->binary);
}
+ERL_NIF_TERM enif_make_resource_binary(ErlNifEnv* env, void* obj,
+ const void* data, size_t size)
+{
+ Eterm bin = enif_make_resource(env, obj);
+ ProcBin* pb = (ProcBin*) binary_val(bin);
+ pb->bytes = (byte*) data;
+ pb->size = size;
+ return bin;
+}
+
int enif_get_resource(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifResourceType* type,
void** objp)
{
+ ProcBin* pb;
Binary* mbin;
ErlNifResource* resource;
if (!ERTS_TERM_IS_MAGIC_BINARY(term)) {
return 0;
}
- mbin = ((ProcBin*) binary_val(term))->val;
+ pb = (ProcBin*) binary_val(term);
+ /*if (pb->size != 0) {
+ return 0; / * Or should we allow "resource binaries" as handles? * /
+ }*/
+ mbin = pb->val;
resource = (ErlNifResource*) ERTS_MAGIC_BIN_DATA(mbin);
if (ERTS_MAGIC_BIN_DESTRUCTOR(mbin) != &nif_resource_dtor
|| resource->type != type) {
@@ -1032,7 +1235,7 @@ int enif_get_resource(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifResourceType* typ
return 1;
}
-unsigned enif_sizeof_resource(ErlNifEnv* env, void* obj)
+size_t enif_sizeof_resource(void* obj)
{
ErlNifResource* resource = DATA_TO_RESOURCE(obj);
Binary* bin = &ERTS_MAGIC_BIN_FROM_DATA(resource)->binary;
@@ -1262,7 +1465,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
lib->entry = entry;
erts_refc_init(&lib->rt_cnt, 0);
erts_refc_init(&lib->rt_dtor_cnt, 0);
- lib->is_orphan = 0;
+ lib->mod = mod;
env.mod_nif = lib;
if (mod->nif != NULL) { /* Reload */
int k;
@@ -1376,7 +1579,7 @@ erts_unload_nif(struct erl_module_nif* lib)
ErlNifResourceType* next;
ASSERT(erts_smp_is_system_blocked(0));
ASSERT(lib != NULL);
- ASSERT(!lib->is_orphan);
+ ASSERT(lib->mod != NULL);
for (rt = resource_type_list.next;
rt != &resource_type_list;
rt = next) {
@@ -1406,7 +1609,7 @@ erts_unload_nif(struct erl_module_nif* lib)
else {
ASSERT(erts_refc_read(&lib->rt_cnt, 1) > 0);
}
- lib->is_orphan = 1;
+ lib->mod = NULL; /* orphan lib */
}
void erl_nif_init()
@@ -1415,7 +1618,8 @@ void erl_nif_init()
resource_type_list.prev = &resource_type_list;
resource_type_list.dtor = NULL;
resource_type_list.owner = NULL;
- resource_type_list.name[0] = '\0';
+ resource_type_list.module = THE_NON_VALUE;
+ resource_type_list.name = THE_NON_VALUE;
}
#ifdef READONLY_CHECK