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-rw-r--r--erts/emulator/beam/beam_load.c4
-rw-r--r--erts/emulator/beam/erl_alloc.c37
-rwxr-xr-xerts/emulator/beam/erl_bif_info.c14
-rw-r--r--erts/emulator/beam/erl_db.c24
-rw-r--r--erts/emulator/beam/erl_nif.c111
5 files changed, 139 insertions, 51 deletions
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 5430ebb29d..53df7876d8 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2013. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2014. 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
@@ -409,7 +409,7 @@ typedef struct LoaderState {
__result = __result << 8 | *Stp->file_p++; \
} \
Dest = __result; \
- } while (0)
+ }
#define GetByte(Stp, Dest) \
if ((Stp)->file_left < 1) { \
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index ca7e39041b..64b3e01ed4 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -629,8 +629,21 @@ erts_alloc_init(int *argc, char **argv, ErtsAllocInitOpts *eaiop)
init.fix_alloc.thr_spec = 0;
#endif
+ /* Make adjustments for carrier migration support */
+ init.temp_alloc.init.util.acul = 0;
+ adjust_carrier_migration_support(&init.sl_alloc);
+ adjust_carrier_migration_support(&init.std_alloc);
+ adjust_carrier_migration_support(&init.ll_alloc);
+ adjust_carrier_migration_support(&init.eheap_alloc);
+ adjust_carrier_migration_support(&init.binary_alloc);
+ adjust_carrier_migration_support(&init.ets_alloc);
+ adjust_carrier_migration_support(&init.driver_alloc);
+ adjust_carrier_migration_support(&init.fix_alloc);
+
if (init.erts_alloc_config) {
/* Adjust flags that erts_alloc_config won't like */
+
+ /* No thread specific instances */
init.temp_alloc.thr_spec = 0;
init.sl_alloc.thr_spec = 0;
init.std_alloc.thr_spec = 0;
@@ -639,20 +652,20 @@ erts_alloc_init(int *argc, char **argv, ErtsAllocInitOpts *eaiop)
init.binary_alloc.thr_spec = 0;
init.ets_alloc.thr_spec = 0;
init.driver_alloc.thr_spec = 0;
- init.fix_alloc.thr_spec = 0;
+ init.fix_alloc.thr_spec = 0;
+
+ /* No carrier migration */
+ init.temp_alloc.init.util.acul = 0;
+ init.sl_alloc.init.util.acul = 0;
+ init.std_alloc.init.util.acul = 0;
+ init.ll_alloc.init.util.acul = 0;
+ init.eheap_alloc.init.util.acul = 0;
+ init.binary_alloc.init.util.acul = 0;
+ init.ets_alloc.init.util.acul = 0;
+ init.driver_alloc.init.util.acul = 0;
+ init.fix_alloc.init.util.acul = 0;
}
- /* Make adjustments for carrier migration support */
- init.temp_alloc.init.util.acul = 0;
- adjust_carrier_migration_support(&init.sl_alloc);
- adjust_carrier_migration_support(&init.std_alloc);
- adjust_carrier_migration_support(&init.ll_alloc);
- adjust_carrier_migration_support(&init.eheap_alloc);
- adjust_carrier_migration_support(&init.binary_alloc);
- adjust_carrier_migration_support(&init.ets_alloc);
- adjust_carrier_migration_support(&init.driver_alloc);
- adjust_carrier_migration_support(&init.fix_alloc);
-
#ifdef ERTS_SMP
/* Only temp_alloc can use thread specific interface */
if (init.temp_alloc.thr_spec)
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index f25b4dbae5..2adba9b240 100755
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -64,7 +64,7 @@ static Export *gather_gc_info_res_trap;
#define DECL_AM(S) Eterm AM_ ## S = am_atom_put(#S, sizeof(#S) - 1)
-static char otp_correction_package[] = ERLANG_OTP_CORRECTION_PACKAGE;
+static char otp_version[] = ERLANG_OTP_VERSION;
/* Keep erts_system_version as a global variable for easy access from a core */
static char erts_system_version[] = ("Erlang/OTP " ERLANG_OTP_RELEASE
"%s"
@@ -312,7 +312,7 @@ erts_print_system_version(int to, void *arg, Process *c_p)
int i, rc = -1;
char *rc_str = "";
char rc_buf[100];
- char *ocp = otp_correction_package;
+ char *ov = otp_version;
#ifdef ERTS_SMP
Uint total, online, active;
#ifdef ERTS_DIRTY_SCHEDULERS
@@ -323,9 +323,9 @@ erts_print_system_version(int to, void *arg, Process *c_p)
(void) erts_schedulers_state(&total, &online, &active, NULL, NULL, NULL, 0);
#endif
#endif
- for (i = 0; i < sizeof(otp_correction_package)-4; i++) {
- if (ocp[i] == '-' && ocp[i+1] == 'r' && ocp[i+2] == 'c')
- rc = atoi(&ocp[i+3]);
+ for (i = 0; i < sizeof(otp_version)-4; i++) {
+ if (ov[i] == '-' && ov[i+1] == 'r' && ov[i+2] == 'c')
+ rc = atoi(&ov[i+3]);
}
if (rc >= 0) {
if (rc == 0)
@@ -2448,10 +2448,6 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
DECL_AM(unknown);
BIF_RET(AM_unknown);
}
- } else if (ERTS_IS_ATOM_STR("otp_correction_package", BIF_ARG_1)) {
- int n = sizeof(ERLANG_OTP_CORRECTION_PACKAGE)-1;
- hp = HAlloc(BIF_P, 2*n);
- BIF_RET(buf_to_intlist(&hp, ERLANG_OTP_CORRECTION_PACKAGE, n, NIL));
} else if (ERTS_IS_ATOM_STR("otp_release", BIF_ARG_1)) {
int n = sizeof(ERLANG_OTP_RELEASE)-1;
hp = HAlloc(BIF_P, 2*n);
diff --git a/erts/emulator/beam/erl_db.c b/erts/emulator/beam/erl_db.c
index 41e64fcd4f..a5d67571e2 100644
--- a/erts/emulator/beam/erl_db.c
+++ b/erts/emulator/beam/erl_db.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2013. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2014. 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
@@ -125,6 +125,7 @@ get_meta_main_tab_lock(unsigned slot)
static erts_smp_spinlock_t meta_main_tab_main_lock;
static Uint meta_main_tab_first_free; /* Index of first free slot */
static int meta_main_tab_cnt; /* Number of active tables */
+static int meta_main_tab_top; /* Highest ever used slot + 1 */
static Uint meta_main_tab_slot_mask; /* The slot index part of an unnamed table id */
static Uint meta_main_tab_seq_incr;
static Uint meta_main_tab_seq_cnt = 0; /* To give unique(-ish) table identifiers */
@@ -1469,6 +1470,10 @@ BIF_RETTYPE ets_new_2(BIF_ALIST_2)
ASSERT(slot>=0 && slot<db_max_tabs);
meta_main_tab_first_free = GET_NEXT_FREE_SLOT(slot);
meta_main_tab_cnt++;
+ if (slot >= meta_main_tab_top) {
+ ASSERT(slot == meta_main_tab_top);
+ meta_main_tab_top = slot + 1;
+ }
if (is_named) {
ret = BIF_ARG_1;
@@ -2058,27 +2063,31 @@ BIF_RETTYPE ets_all_0(BIF_ALIST_0)
{
DbTable* tb;
Eterm previous;
- int i, j;
+ int i;
Eterm* hp;
Eterm* hendp;
int t_tabs_cnt;
- int t_max_tabs;
+ int t_top;
erts_smp_spin_lock(&meta_main_tab_main_lock);
t_tabs_cnt = meta_main_tab_cnt;
- t_max_tabs = db_max_tabs;
+ t_top = meta_main_tab_top;
erts_smp_spin_unlock(&meta_main_tab_main_lock);
hp = HAlloc(BIF_P, 2*t_tabs_cnt);
hendp = hp + 2*t_tabs_cnt;
previous = NIL;
- j = 0;
- for(i = 0; (i < t_max_tabs && j < t_tabs_cnt); i++) {
+ for(i = 0; i < t_top; i++) {
erts_smp_rwmtx_t *mmtl = get_meta_main_tab_lock(i);
erts_smp_rwmtx_rlock(mmtl);
if (IS_SLOT_ALIVE(i)) {
- j++;
+ if (hp == hendp) {
+ /* Racing table creator, grab some more heap space */
+ t_tabs_cnt = 10;
+ hp = HAlloc(BIF_P, 2*t_tabs_cnt);
+ hendp = hp + 2*t_tabs_cnt;
+ }
tb = meta_main_tab[i].u.tb;
previous = CONS(hp, tb->common.id, previous);
hp += 2;
@@ -2849,6 +2858,7 @@ void init_db(void)
ERTS_ETS_MISC_MEM_ADD(size);
meta_main_tab_cnt = 0;
+ meta_main_tab_top = 0;
for (i=1; i<db_max_tabs; i++) {
SET_NEXT_FREE_SLOT(i-1,i);
}
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index c35f1fc2c6..4126df6f34 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1237,6 +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,
@@ -1258,22 +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 {
@@ -1281,12 +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;
@@ -1294,6 +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);
@@ -1319,6 +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
@@ -2040,9 +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;
@@ -2074,6 +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;
@@ -2081,7 +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.");
@@ -2094,17 +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) {
@@ -2133,6 +2201,7 @@ 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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-26 01:22:04 +0000