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-rw-r--r--erts/emulator/beam/erl_nif.c502
1 files changed, 462 insertions, 40 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 48f8be8dd3..40860e141c 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2009-2013. All Rights Reserved.
+ * Copyright Ericsson AB 2009-2014. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
@@ -31,9 +31,11 @@
#include "bif.h"
#include "error.h"
#include "big.h"
+#include "erl_map.h"
#include "beam_bp.h"
#include "erl_thr_progress.h"
#include "dtrace-wrapper.h"
+#include "erl_process.h"
#if defined(USE_DYNAMIC_TRACE) && (defined(USE_DTRACE) || defined(USE_SYSTEMTAP))
#define HAVE_USE_DTRACE 1
#endif
@@ -874,7 +876,7 @@ int enif_get_list_cell(ErlNifEnv* env, Eterm term, Eterm* head, Eterm* tail)
int enif_get_list_length(ErlNifEnv* env, Eterm term, unsigned* len)
{
if (is_not_list(term) && is_not_nil(term)) return 0;
- *len = list_length(term);
+ *len = erts_list_length(term);
return 1;
}
@@ -1213,7 +1215,8 @@ static void close_lib(struct erl_module_nif* lib)
lib->entry->unload(&env, lib->priv_data);
post_nif_noproc(&env);
}
- erts_sys_ddll_close(lib->handle);
+ if (!erts_is_static_nif(lib->handle))
+ erts_sys_ddll_close(lib->handle);
lib->handle = NULL;
}
@@ -1234,6 +1237,19 @@ static void steal_resource_type(ErlNifResourceType* type)
}
}
+/* The opened_rt_list is used by enif_open_resource_type()
+ * in order to rollback "creates" and "take-overs" in case the load fails.
+ */
+struct opened_resource_type
+{
+ struct opened_resource_type* next;
+
+ ErlNifResourceFlags op;
+ ErlNifResourceType* type;
+ ErlNifResourceDtor* new_dtor;
+};
+static struct opened_resource_type* opened_rt_list = NULL;
+
ErlNifResourceType*
enif_open_resource_type(ErlNifEnv* env,
const char* module_str,
@@ -1255,22 +1271,21 @@ enif_open_resource_type(ErlNifEnv* env,
if (type == NULL) {
if (flags & ERL_NIF_RT_CREATE) {
type = erts_alloc(ERTS_ALC_T_NIF,
- sizeof(struct enif_resource_type_t));
- type->dtor = dtor;
+ sizeof(struct enif_resource_type_t));
type->module = module_am;
type->name = name_am;
erts_refc_init(&type->refc, 1);
- type->owner = env->mod_nif;
- type->prev = &resource_type_list;
- type->next = resource_type_list.next;
- type->next->prev = type;
- type->prev->next = type;
op = ERL_NIF_RT_CREATE;
+ #ifdef DEBUG
+ type->dtor = (void*)1;
+ type->owner = (void*)2;
+ type->prev = (void*)3;
+ type->next = (void*)4;
+ #endif
}
}
else {
- if (flags & ERL_NIF_RT_TAKEOVER) {
- steal_resource_type(type);
+ if (flags & ERL_NIF_RT_TAKEOVER) {
op = ERL_NIF_RT_TAKEOVER;
}
else {
@@ -1278,12 +1293,13 @@ enif_open_resource_type(ErlNifEnv* env,
}
}
if (type != NULL) {
- type->owner = env->mod_nif;
- type->dtor = dtor;
- if (type->dtor != NULL) {
- erts_refc_inc(&type->owner->rt_dtor_cnt, 1);
- }
- erts_refc_inc(&type->owner->rt_cnt, 1);
+ struct opened_resource_type* ort = erts_alloc(ERTS_ALC_T_TMP,
+ sizeof(struct opened_resource_type));
+ ort->op = op;
+ ort->type = type;
+ ort->new_dtor = dtor;
+ ort->next = opened_rt_list;
+ opened_rt_list = ort;
}
if (tried != NULL) {
*tried = op;
@@ -1291,6 +1307,51 @@ enif_open_resource_type(ErlNifEnv* env,
return type;
}
+static void commit_opened_resource_types(struct erl_module_nif* lib)
+{
+ while (opened_rt_list) {
+ struct opened_resource_type* ort = opened_rt_list;
+
+ ErlNifResourceType* type = ort->type;
+
+ if (ort->op == ERL_NIF_RT_CREATE) {
+ type->prev = &resource_type_list;
+ type->next = resource_type_list.next;
+ type->next->prev = type;
+ type->prev->next = type;
+ }
+ else { /* ERL_NIF_RT_TAKEOVER */
+ steal_resource_type(type);
+ }
+
+ type->owner = lib;
+ type->dtor = ort->new_dtor;
+
+ if (type->dtor != NULL) {
+ erts_refc_inc(&lib->rt_dtor_cnt, 1);
+ }
+ erts_refc_inc(&lib->rt_cnt, 1);
+
+ opened_rt_list = ort->next;
+ erts_free(ERTS_ALC_T_TMP, ort);
+ }
+}
+
+static void rollback_opened_resource_types(void)
+{
+ while (opened_rt_list) {
+ struct opened_resource_type* ort = opened_rt_list;
+
+ if (ort->op == ERL_NIF_RT_CREATE) {
+ erts_free(ERTS_ALC_T_NIF, ort->type);
+ }
+
+ opened_rt_list = ort->next;
+ erts_free(ERTS_ALC_T_TMP, ort);
+ }
+}
+
+
static void nif_resource_dtor(Binary* bin)
{
ErlNifResource* resource = (ErlNifResource*) ERTS_MAGIC_BIN_DATA(bin);
@@ -1316,6 +1377,8 @@ 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);
+
+ ASSERT(type->owner && type->next && type->prev); /* not allowed in load/upgrade */
resource->type = type;
erts_refc_inc(&bin->refc, 1);
#ifdef DEBUG
@@ -1406,7 +1469,7 @@ void* enif_dlopen(const char* lib,
ErtsSysDdllError errdesc = ERTS_SYS_DDLL_ERROR_INIT;
void* handle;
void* init_func;
- if (erts_sys_ddll_open2(lib, &handle, &errdesc) == ERL_DE_NO_ERROR) {
+ if (erts_sys_ddll_open(lib, &handle, &errdesc) == ERL_DE_NO_ERROR) {
if (erts_sys_ddll_load_nif_init(handle, &init_func, &errdesc) == ERL_DE_NO_ERROR) {
erts_sys_ddll_call_nif_init(init_func);
}
@@ -1450,6 +1513,347 @@ int enif_consume_timeslice(ErlNifEnv* env, int percent)
return ERTS_BIF_REDS_LEFT(env->proc) == 0;
}
+#ifdef ERTS_DIRTY_SCHEDULERS
+
+static void
+alloc_proc_psd(Process* proc, Export **ep)
+{
+ int i;
+ if (!*ep) {
+ *ep = erts_alloc(ERTS_ALC_T_PSD, sizeof(Export));
+ sys_memset((void*) *ep, 0, sizeof(Export));
+ for (i=0; i<ERTS_NUM_CODE_IX; i++) {
+ (*ep)->addressv[i] = &(*ep)->code[3];
+ }
+ (*ep)->code[3] = (BeamInstr) em_call_nif;
+ }
+ (void) ERTS_PROC_SET_DIRTY_SCHED_TRAP_EXPORT(proc, ERTS_PROC_LOCK_MAIN, *ep);
+}
+
+static ERL_NIF_TERM
+execute_dirty_nif_finalizer(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+ Eterm* reg = ERTS_PROC_GET_SCHDATA(env->proc)->x_reg_array;
+ ERL_NIF_TERM result = (ERL_NIF_TERM) reg[0];
+ typedef ERL_NIF_TERM (*FinalizerFP)(ErlNifEnv*, ERL_NIF_TERM);
+ FinalizerFP fp;
+#if HAVE_INT64 && SIZEOF_LONG != 8
+ ASSERT(sizeof(fp) <= sizeof(ErlNifUInt64));
+ enif_get_uint64(env, reg[1], (ErlNifUInt64 *) &fp);
+#else
+ ASSERT(sizeof(fp) <= sizeof(unsigned long));
+ enif_get_ulong(env, reg[1], (unsigned long *) &fp);
+#endif
+ return (*fp)(env, result);
+}
+
+#endif /* ERTS_DIRTY_SCHEDULERS */
+
+#ifdef ERL_NIF_DIRTY_SCHEDULER_SUPPORT
+
+ERL_NIF_TERM
+enif_schedule_dirty_nif(ErlNifEnv* env, int flags,
+ ERL_NIF_TERM (*fp)(ErlNifEnv*, int, const ERL_NIF_TERM[]),
+ int argc, const ERL_NIF_TERM argv[])
+{
+#ifdef USE_THREADS
+ erts_aint32_t state, n, a;
+ Process* proc = env->proc;
+ Eterm* reg = ERTS_PROC_GET_SCHDATA(proc)->x_reg_array;
+ Export* ep = NULL;
+ int i;
+
+ int chkflgs = (flags & (ERL_NIF_DIRTY_JOB_IO_BOUND|ERL_NIF_DIRTY_JOB_CPU_BOUND));
+ if (chkflgs != ERL_NIF_DIRTY_JOB_IO_BOUND && chkflgs != ERL_NIF_DIRTY_JOB_CPU_BOUND)
+ return enif_make_badarg(env);
+
+ a = erts_smp_atomic32_read_acqb(&proc->state);
+ while (1) {
+ n = state = a;
+ /*
+ * clear any current dirty flags and dirty queue indicators,
+ * in case the application is shifting a job from one type
+ * of dirty scheduler to the other
+ */
+ n &= ~(ERTS_PSFLG_DIRTY_CPU_PROC|ERTS_PSFLG_DIRTY_IO_PROC
+ |ERTS_PSFLG_DIRTY_CPU_PROC_IN_Q|ERTS_PSFLG_DIRTY_IO_PROC_IN_Q);
+ if (chkflgs == ERL_NIF_DIRTY_JOB_CPU_BOUND)
+ n |= ERTS_PSFLG_DIRTY_CPU_PROC;
+ else
+ n |= ERTS_PSFLG_DIRTY_IO_PROC;
+ a = erts_smp_atomic32_cmpxchg_mb(&proc->state, n, state);
+ if (a == state)
+ break;
+ }
+ if (!(ep = ERTS_PROC_GET_DIRTY_SCHED_TRAP_EXPORT(proc)))
+ alloc_proc_psd(proc, &ep);
+ ERTS_VBUMP_ALL_REDS(proc);
+ ep->code[2] = argc;
+ for (i = 0; i < argc; i++) {
+ reg[i] = (Eterm) argv[i];
+ }
+ proc->i = (BeamInstr*) ep->addressv[0];
+ ep->code[4] = (BeamInstr) fp;
+ proc->freason = TRAP;
+
+ return THE_NON_VALUE;
+#else
+ return (*fp)(env, argc, argv);
+#endif
+}
+
+ERL_NIF_TERM
+enif_schedule_dirty_nif_finalizer(ErlNifEnv* env, ERL_NIF_TERM result,
+ ERL_NIF_TERM (*fp)(ErlNifEnv*, ERL_NIF_TERM))
+{
+#ifdef USE_THREADS
+ Process* proc = env->proc;
+ Eterm* reg = ERTS_PROC_GET_SCHDATA(proc)->x_reg_array;
+ Export* ep;
+
+ erts_smp_atomic32_read_band_mb(&proc->state,
+ ~(ERTS_PSFLG_DIRTY_CPU_PROC
+ |ERTS_PSFLG_DIRTY_IO_PROC
+ |ERTS_PSFLG_DIRTY_CPU_PROC_IN_Q
+ |ERTS_PSFLG_DIRTY_IO_PROC_IN_Q));
+ if (!(ep = ERTS_PROC_GET_DIRTY_SCHED_TRAP_EXPORT(proc)))
+ alloc_proc_psd(proc, &ep);
+ ERTS_VBUMP_ALL_REDS(proc);
+ ep->code[2] = 2;
+ reg[0] = (Eterm) result;
+#if HAVE_INT64 && SIZEOF_LONG != 8
+ ASSERT(sizeof(fp) <= sizeof(ErlNifUInt64));
+ reg[1] = (Eterm) enif_make_uint64(env, (ErlNifUInt64) fp);
+#else
+ ASSERT(sizeof(fp) <= sizeof(unsigned long));
+ reg[1] = (Eterm) enif_make_ulong(env, (unsigned long) fp);
+#endif
+ proc->i = (BeamInstr*) ep->addressv[0];
+ ep->code[4] = (BeamInstr) execute_dirty_nif_finalizer;
+ proc->freason = TRAP;
+
+ return THE_NON_VALUE;
+#else
+ return (*fp)(env, result);
+#endif
+}
+
+/* A simple finalizer that just returns its result argument */
+ERL_NIF_TERM
+enif_dirty_nif_finalizer(ErlNifEnv* env, ERL_NIF_TERM result)
+{
+ return result;
+}
+
+int
+enif_is_on_dirty_scheduler(ErlNifEnv* env)
+{
+ return ERTS_SCHEDULER_IS_DIRTY(env->proc->scheduler_data);
+}
+
+int
+enif_have_dirty_schedulers()
+{
+#ifdef USE_THREADS
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+#endif /* ERL_NIF_DIRTY_SCHEDULER_SUPPORT */
+
+/* Maps */
+
+int enif_is_map(ErlNifEnv* env, ERL_NIF_TERM term)
+{
+ return is_map(term);
+}
+
+int enif_get_map_size(ErlNifEnv* env, ERL_NIF_TERM term, size_t *size)
+{
+ if (is_map(term)) {
+ map_t *mp;
+ mp = (map_t*)map_val(term);
+ *size = map_get_size(mp);
+ return 1;
+ }
+ return 0;
+}
+
+ERL_NIF_TERM enif_make_new_map(ErlNifEnv* env)
+{
+ Eterm* hp = alloc_heap(env,MAP_HEADER_SIZE+1);
+ Eterm tup;
+ map_t *mp;
+
+ tup = make_tuple(hp);
+ *hp++ = make_arityval(0);
+ mp = (map_t*)hp;
+ mp->thing_word = MAP_HEADER;
+ mp->size = 0;
+ mp->keys = tup;
+
+ return make_map(mp);
+}
+
+int enif_make_map_put(ErlNifEnv* env,
+ Eterm map_in,
+ Eterm key,
+ Eterm value,
+ Eterm *map_out)
+{
+ if (is_not_map(map_in)) {
+ return 0;
+ }
+ flush_env(env);
+ *map_out = erts_maps_put(env->proc, key, value, map_in);
+ cache_env(env);
+ return 1;
+}
+
+int enif_get_map_value(ErlNifEnv* env,
+ Eterm map,
+ Eterm key,
+ Eterm *value)
+{
+ if (is_not_map(map)) {
+ return 0;
+ }
+ return erts_maps_get(key, map, value);
+}
+
+int enif_make_map_update(ErlNifEnv* env,
+ Eterm map_in,
+ Eterm key,
+ Eterm value,
+ Eterm *map_out)
+{
+ int res;
+ if (is_not_map(map_in)) {
+ return 0;
+ }
+
+ flush_env(env);
+ res = erts_maps_update(env->proc, key, value, map_in, map_out);
+ cache_env(env);
+ return res;
+}
+
+int enif_make_map_remove(ErlNifEnv* env,
+ Eterm map_in,
+ Eterm key,
+ Eterm *map_out)
+{
+ int res;
+ if (is_not_map(map_in)) {
+ return 0;
+ }
+ flush_env(env);
+ res = erts_maps_remove(env->proc, key, map_in, map_out);
+ cache_env(env);
+ return res;
+}
+
+int enif_map_iterator_create(ErlNifEnv *env,
+ Eterm map,
+ ErlNifMapIterator *iter,
+ ErlNifMapIteratorEntry entry)
+{
+ if (is_map(map)) {
+ map_t *mp = (map_t*)map_val(map);
+ size_t offset;
+
+ switch (entry) {
+ case ERL_NIF_MAP_ITERATOR_HEAD: offset = 0; break;
+ case ERL_NIF_MAP_ITERATOR_TAIL: offset = map_get_size(mp) - 1; break;
+ default: goto error;
+ }
+
+ /* empty maps are ok but will leave the iterator
+ * in bad shape.
+ */
+
+ iter->map = map;
+ iter->ks = ((Eterm *)map_get_keys(mp)) + offset;
+ iter->vs = ((Eterm *)map_get_values(mp)) + offset;
+ iter->t_limit = map_get_size(mp) + 1;
+ iter->idx = offset + 1;
+
+ return 1;
+ }
+
+error:
+#ifdef DEBUG
+ iter->map = THE_NON_VALUE;
+#endif
+ return 0;
+}
+
+void enif_map_iterator_destroy(ErlNifEnv *env, ErlNifMapIterator *iter)
+{
+ /* not used */
+#ifdef DEBUG
+ iter->map = THE_NON_VALUE;
+#endif
+
+}
+
+int enif_map_iterator_is_tail(ErlNifEnv *env, ErlNifMapIterator *iter)
+{
+ ASSERT(iter && is_map(iter->map));
+ ASSERT(iter->idx >= 0 && (iter->idx <= map_get_size(map_val(iter->map)) + 1));
+ return (iter->t_limit == 1 || iter->idx == iter->t_limit);
+}
+
+int enif_map_iterator_is_head(ErlNifEnv *env, ErlNifMapIterator *iter)
+{
+ ASSERT(iter && is_map(iter->map));
+ ASSERT(iter->idx >= 0 && (iter->idx <= map_get_size(map_val(iter->map)) + 1));
+ return (iter->t_limit == 1 || iter->idx == 0);
+}
+
+
+int enif_map_iterator_next(ErlNifEnv *env, ErlNifMapIterator *iter)
+{
+ ASSERT(iter && is_map(iter->map));
+ if (iter->idx < iter->t_limit) {
+ iter->idx++;
+ iter->ks++;
+ iter->vs++;
+ }
+ return (iter->idx != iter->t_limit);
+}
+
+int enif_map_iterator_prev(ErlNifEnv *env, ErlNifMapIterator *iter)
+{
+ ASSERT(iter && is_map(iter->map));
+ if (iter->idx > 0) {
+ iter->idx--;
+ iter->ks--;
+ iter->vs--;
+ }
+ return (iter->idx > 0);
+}
+
+int enif_map_iterator_get_pair(ErlNifEnv *env,
+ ErlNifMapIterator *iter,
+ Eterm *key,
+ Eterm *value)
+{
+ ASSERT(iter && is_map(iter->map));
+ if (iter->idx > 0 && iter->idx < iter->t_limit) {
+ ASSERT(iter->ks >= map_get_keys(map_val(iter->map)) &&
+ iter->ks < (map_get_keys(map_val(iter->map)) + map_get_size(map_val(iter->map))));
+ ASSERT(iter->vs >= map_get_values(map_val(iter->map)) &&
+ iter->vs < (map_get_values(map_val(iter->map)) + map_get_size(map_val(iter->map))));
+ *key = *(iter->ks);
+ *value = *(iter->vs);
+ return 1;
+ }
+ return 0;
+}
+
/***************************************************************************
** load_nif/2 **
***************************************************************************/
@@ -1564,12 +1968,13 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
static const char upgrade[] = "upgrade";
char* lib_name = NULL;
void* handle = NULL;
- void* init_func;
+ void* init_func = NULL;
ErlNifEntry* entry = NULL;
ErlNifEnv env;
- int len, i, err;
+ int i, err, encoding;
Module* mod;
Eterm mod_atom;
+ const Atom* mod_atomp;
Eterm f_atom;
BeamInstr* caller;
ErtsSysDdllError errdesc = ERTS_SYS_DDLL_ERROR_INIT;
@@ -1578,18 +1983,18 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
struct erl_module_nif* lib = NULL;
int reload_warning = 0;
- len = list_length(BIF_ARG_1);
- if (len < 0) {
- BIF_ERROR(BIF_P, BADARG);
+ encoding = erts_get_native_filename_encoding();
+ if (encoding == ERL_FILENAME_WIN_WCHAR) {
+ /* Do not convert the lib name to utf-16le yet, do that in win32 specific code */
+ /* since lib_name is used in error messages */
+ encoding = ERL_FILENAME_UTF8;
}
-
- lib_name = (char *) erts_alloc(ERTS_ALC_T_TMP, len + 1);
-
- if (intlist_to_buf(BIF_ARG_1, lib_name, len) != len) {
- erts_free(ERTS_ALC_T_TMP, lib_name);
+ lib_name = erts_convert_filename_to_encoding(BIF_ARG_1, NULL, 0,
+ ERTS_ALC_T_TMP, 1, 0, encoding,
+ NULL, 0);
+ if (!lib_name) {
BIF_ERROR(BIF_P, BADARG);
}
- lib_name[len] = '\0';
if (!erts_try_seize_code_write_permission(BIF_P)) {
erts_free(ERTS_ALC_T_TMP, lib_name);
@@ -1613,13 +2018,19 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
mod=erts_get_module(mod_atom, erts_active_code_ix());
ASSERT(mod != NULL);
+ mod_atomp = atom_tab(atom_val(mod_atom));
+ init_func = erts_static_nif_get_nif_init((char*)mod_atomp->name, mod_atomp->len);
+ if (init_func != NULL)
+ handle = init_func;
+
if (!in_area(caller, mod->curr.code, mod->curr.code_length)) {
ASSERT(in_area(caller, mod->old.code, mod->old.code_length));
ret = load_nif_error(BIF_P, "old_code", "Calling load_nif from old "
"module '%T' not allowed", mod_atom);
}
- else if ((err=erts_sys_ddll_open2(lib_name, &handle, &errdesc)) != ERL_DE_NO_ERROR) {
+ 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);
@@ -1628,7 +2039,8 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
ret = load_nif_error(BIF_P, "load_failed", "%s %s: '%s'", slogan, lib_name, errdesc.str);
}
}
- else if (erts_sys_ddll_load_nif_init(handle, &init_func, &errdesc) != ERL_DE_NO_ERROR) {
+ else if (init_func == NULL &&
+ erts_sys_ddll_load_nif_init(handle, &init_func, &errdesc) != ERL_DE_NO_ERROR) {
ret = load_nif_error(BIF_P, bad_lib, "Failed to find library init"
" function: '%s'", errdesc.str);
@@ -1638,7 +2050,8 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
ret = load_nif_error(BIF_P, bad_lib, "Library init-call unsuccessful");
}
else if (entry->major != ERL_NIF_MAJOR_VERSION
- || entry->minor > ERL_NIF_MINOR_VERSION) {
+ || entry->minor > ERL_NIF_MINOR_VERSION
+ || (entry->major==2 && entry->minor == 5)) { /* experimental maps */
ret = load_nif_error(BIF_P, bad_lib, "Library version (%d.%d) not compatible (with %d.%d).",
entry->major, entry->minor, ERL_NIF_MAJOR_VERSION, ERL_NIF_MINOR_VERSION);
@@ -1687,9 +2100,15 @@ 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);
+ ASSERT(opened_rt_list == NULL);
lib->mod = mod;
env.mod_nif = lib;
- if (mod->curr.nif != NULL) { /* Reload */
+ if (mod->curr.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;
lib->priv_data = mod->curr.nif->priv_data;
@@ -1721,6 +2140,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
ret = load_nif_error(BIF_P, reload, "Library reload-call unsuccessful.");
}
else {
+ commit_opened_resource_types(lib);
mod->curr.nif->entry = NULL; /* to prevent 'unload' callback */
erts_unload_nif(mod->curr.nif);
reload_warning = 1;
@@ -1728,7 +2148,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
}
else {
lib->priv_data = NULL;
- if (mod->old.nif != NULL) { /* Upgrade */
+ if (mod->old.nif != NULL) { /**************** Upgrade ***************/
void* prev_old_data = mod->old.nif->priv_data;
if (entry->upgrade == NULL) {
ret = load_nif_error(BIF_P, upgrade, "Upgrade not supported by this NIF library.");
@@ -1741,17 +2161,18 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
mod->old.nif->priv_data = prev_old_data;
ret = load_nif_error(BIF_P, upgrade, "Library upgrade-call unsuccessful.");
}
- /*else if (mod->old_nif->priv_data != prev_old_data) {
- refresh_cached_nif_data(mod->old_code, mod->old_nif);
- }*/
+ else
+ commit_opened_resource_types(lib);
}
- else if (entry->load != NULL) { /* Initial load */
+ else if (entry->load != NULL) { /********* Initial load ***********/
erts_pre_nif(&env, BIF_P, lib);
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) {
@@ -1780,11 +2201,12 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
}
else {
error:
+ rollback_opened_resource_types();
ASSERT(ret != am_ok);
if (lib != NULL) {
erts_free(ERTS_ALC_T_NIF, lib);
}
- if (handle != NULL) {
+ if (handle != NULL && !erts_is_static_nif(handle)) {
erts_sys_ddll_close(handle);
}
erts_sys_ddll_free_error(&errdesc);