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-rw-r--r--erts/emulator/beam/atom.names1
-rw-r--r--erts/emulator/beam/beam_load.c43
-rw-r--r--erts/emulator/beam/bif.c38
-rw-r--r--erts/emulator/beam/bif.h61
-rw-r--r--erts/emulator/beam/bif.tab1
-rw-r--r--erts/emulator/beam/erl_bif_info.c74
-rw-r--r--erts/emulator/beam/erl_bits.h2
-rw-r--r--erts/emulator/beam/erl_init.c2
-rw-r--r--erts/emulator/beam/erl_map.c4
-rw-r--r--erts/emulator/beam/erl_message.c2
-rw-r--r--erts/emulator/beam/erl_nif.c80
-rw-r--r--erts/emulator/beam/erl_nif.h12
-rw-r--r--erts/emulator/beam/erl_nif_api_funcs.h19
-rw-r--r--erts/emulator/beam/erl_node_tables.c8
-rw-r--r--erts/emulator/beam/erl_posix_str.c6
-rw-r--r--erts/emulator/beam/erl_proc_sig_queue.c243
-rw-r--r--erts/emulator/beam/erl_proc_sig_queue.h25
-rw-r--r--erts/emulator/beam/erl_process.c104
-rw-r--r--erts/emulator/beam/io.c27
-rw-r--r--erts/emulator/beam/msg_instrs.tab2
-rw-r--r--erts/emulator/beam/sys.h4
21 files changed, 520 insertions, 238 deletions
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index 7963386e1d..cceca66850 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -673,3 +673,4 @@ atom xor
atom x86
atom yes
atom yield
+atom nifs
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 0184c567f1..af620d7432 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -554,6 +554,7 @@ static Eterm get_module_info(Process* p, ErtsCodeIndex code_ix,
static Eterm exported_from_module(Process* p, ErtsCodeIndex code_ix,
Eterm mod);
static Eterm functions_in_module(Process* p, BeamCodeHeader*);
+static Eterm nifs_in_module(Process* p, Eterm module);
static Eterm attributes_for_module(Process* p, BeamCodeHeader*);
static Eterm compilation_info_for_module(Process* p, BeamCodeHeader*);
static Eterm md5_of_module(Process* p, BeamCodeHeader*);
@@ -5954,6 +5955,8 @@ get_module_info(Process* p, ErtsCodeIndex code_ix, BeamCodeHeader* code_hdr,
return exported_from_module(p, code_ix, module);
} else if (what == am_functions) {
return functions_in_module(p, code_hdr);
+ } else if (what == am_nifs) {
+ return nifs_in_module(p, module);
} else if (what == am_attributes) {
return attributes_for_module(p, code_hdr);
} else if (what == am_compile) {
@@ -6007,6 +6010,46 @@ functions_in_module(Process* p, /* Process whose heap to use. */
}
/*
+ * Builds a list of all NIFs in the given module:
+ * [{Name, Arity},...]
+ */
+Eterm
+nifs_in_module(Process* p, Eterm module)
+{
+ Eterm nif_list, *hp;
+ Module *mod;
+
+ mod = erts_get_module(module, erts_active_code_ix());
+ nif_list = NIL;
+
+ if (mod->curr.nif != NULL) {
+ int func_count, func_ix;
+ ErlNifFunc *funcs;
+
+ func_count = erts_nif_get_funcs(mod->curr.nif, &funcs);
+ hp = HAlloc(p, func_count * 5);
+
+ for (func_ix = func_count - 1; func_ix >= 0; func_ix--) {
+ Eterm name, arity, pair;
+ ErlNifFunc *func;
+
+ func = &funcs[func_ix];
+
+ name = am_atom_put(func->name, sys_strlen(func->name));
+ arity = make_small(func->arity);
+
+ pair = TUPLE2(hp, name, arity);
+ hp += 3;
+
+ nif_list = CONS(hp, pair, nif_list);
+ hp += 2;
+ }
+ }
+
+ return nif_list;
+}
+
+/*
* Returns 'true' if mod has any native compiled functions, otherwise 'false'
*/
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index adea7d007e..232597c5b6 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -52,7 +52,6 @@ Export *erts_await_result;
static Export await_exit_trap;
static Export* flush_monitor_messages_trap = NULL;
static Export* set_cpu_topology_trap = NULL;
-static Export* await_proc_exit_trap = NULL;
static Export* await_port_send_result_trap = NULL;
Export* erts_format_cpu_topology_trap = NULL;
static Export dsend_continue_trap_export;
@@ -4654,42 +4653,6 @@ static BIF_RETTYPE bif_return_trap(BIF_ALIST_2)
BIF_RET(res);
}
-void
-erts_bif_prep_await_proc_exit_data_trap(Process *c_p, Eterm pid, Eterm ret)
-{
- ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p, pid, am_data, ret);
-}
-
-void
-erts_bif_prep_await_proc_exit_reason_trap(Process *c_p, Eterm pid)
-{
- ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p,
- pid, am_reason, am_undefined);
-}
-
-void
-erts_bif_prep_await_proc_exit_apply_trap(Process *c_p,
- Eterm pid,
- Eterm module,
- Eterm function,
- Eterm args[],
- int nargs)
-{
- Eterm term;
- Eterm *hp;
- int i;
- ASSERT(is_atom(module) && is_atom(function));
-
- hp = HAlloc(c_p, 4+2*nargs);
- term = NIL;
- for (i = nargs-1; i >= 0; i--) {
- term = CONS(hp, args[i], term);
- hp += 2;
- }
- term = TUPLE3(hp, module, function, term);
- ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p, pid, am_apply, term);
-}
-
Export bif_return_trap_export;
void erts_init_trap_export(Export* ep, Eterm m, Eterm f, Uint a,
@@ -4742,7 +4705,6 @@ void erts_init_bif(void)
erts_format_cpu_topology_trap = erts_export_put(am_erlang,
am_format_cpu_topology,
1);
- await_proc_exit_trap = erts_export_put(am_erlang,am_await_proc_exit,3);
await_port_send_result_trap
= erts_export_put(am_erts_internal, am_await_port_send_result, 3);
system_flag_scheduler_wall_time_trap
diff --git a/erts/emulator/beam/bif.h b/erts/emulator/beam/bif.h
index dca53686f4..a33421d762 100644
--- a/erts/emulator/beam/bif.h
+++ b/erts/emulator/beam/bif.h
@@ -437,67 +437,6 @@ do { \
ERTS_BIF_EXITED((PROC)); \
} while (0)
-/*
- * The ERTS_BIF_*_AWAIT_X_*_TRAP makros either exits the caller, or
- * sets up a trap to erlang:await_proc_exit/3.
- *
- * The caller is acquired to hold the 'main' lock on C_P. No other locks
- * are allowed to be held.
- */
-
-#define ERTS_BIF_PREP_AWAIT_X_DATA_TRAP(RET, C_P, PID, DATA) \
-do { \
- erts_bif_prep_await_proc_exit_data_trap((C_P), (PID), (DATA)); \
- (RET) = THE_NON_VALUE; \
-} while (0)
-
-#define ERTS_BIF_PREP_AWAIT_X_REASON_TRAP(RET, C_P, PID) \
-do { \
- erts_bif_prep_await_proc_exit_reason_trap((C_P), (PID)); \
- (RET) = THE_NON_VALUE; \
-} while (0)
-
-#define ERTS_BIF_PREP_AWAIT_X_APPLY_TRAP(RET, C_P, PID, M, F, A, AN) \
-do { \
- erts_bif_prep_await_proc_exit_apply_trap((C_P), (PID), \
- (M), (F), (A), (AN)); \
- (RET) = THE_NON_VALUE; \
-} while (0)
-
-#define ERTS_BIF_AWAIT_X_DATA_TRAP(C_P, PID, DATA) \
-do { \
- erts_bif_prep_await_proc_exit_data_trap((C_P), (PID), (DATA)); \
- return THE_NON_VALUE; \
-} while (0)
-
-#define ERTS_BIF_AWAIT_X_REASON_TRAP(C_P, PID) \
-do { \
- erts_bif_prep_await_proc_exit_reason_trap((C_P), (PID)); \
- return THE_NON_VALUE; \
-} while (0)
-
-#define ERTS_BIF_AWAIT_X_APPLY_TRAP(C_P, PID, M, F, A, AN) \
-do { \
- erts_bif_prep_await_proc_exit_apply_trap((C_P), (PID), \
- (M), (F), (A), (AN)); \
- return THE_NON_VALUE; \
-} while (0)
-
-void
-erts_bif_prep_await_proc_exit_data_trap(Process *c_p,
- Eterm pid,
- Eterm data);
-void
-erts_bif_prep_await_proc_exit_reason_trap(Process *c_p,
- Eterm pid);
-void
-erts_bif_prep_await_proc_exit_apply_trap(Process *c_p,
- Eterm pid,
- Eterm module,
- Eterm function,
- Eterm args[],
- int nargs);
-
int erts_call_dirty_bif(ErtsSchedulerData *esdp, Process *c_p,
BeamInstr *I, Eterm *reg);
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab
index 93613ac2eb..687fd39d58 100644
--- a/erts/emulator/beam/bif.tab
+++ b/erts/emulator/beam/bif.tab
@@ -266,6 +266,7 @@ bif erlang:demonitor/1
bif erlang:demonitor/2
bif erlang:is_process_alive/1
+bif erts_internal:is_process_alive/2
bif erlang:error/1 error_1
bif erlang:error/2 error_2
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 6106cfdcfd..bdca93428e 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -73,6 +73,9 @@ static Export *gather_msacc_res_trap;
static Export *gather_gc_info_res_trap;
static Export *gather_system_check_res_trap;
+static Export *is_process_alive_trap;
+
+
#define DECL_AM(S) Eterm AM_ ## S = am_atom_put(#S, sizeof(#S) - 1)
static char otp_version[] = ERLANG_OTP_VERSION;
@@ -3501,34 +3504,53 @@ fun_info_mfa_1(BIF_ALIST_1)
BIF_ERROR(p, BADARG);
}
+BIF_RETTYPE erts_internal_is_process_alive_2(BIF_ALIST_2)
+{
+ if (!is_internal_pid(BIF_ARG_1) || !is_internal_ordinary_ref(BIF_ARG_2))
+ BIF_ERROR(BIF_P, BADARG);
+ erts_proc_sig_send_is_alive_request(BIF_P, BIF_ARG_1, BIF_ARG_2);
+ BIF_RET(am_ok);
+}
+
BIF_RETTYPE is_process_alive_1(BIF_ALIST_1)
{
- if(is_internal_pid(BIF_ARG_1)) {
- Process *rp;
-
- if (BIF_ARG_1 == BIF_P->common.id)
- BIF_RET(am_true);
-
- rp = erts_proc_lookup_raw(BIF_ARG_1);
- if (!rp) {
- BIF_RET(am_false);
- }
- else {
- if (erts_atomic32_read_acqb(&rp->state) & ERTS_PSFLG_EXITING)
- ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_false);
- else
- BIF_RET(am_true);
- }
- }
- else if(is_external_pid(BIF_ARG_1)) {
- if(external_pid_dist_entry(BIF_ARG_1) == erts_this_dist_entry)
+ if (is_internal_pid(BIF_ARG_1)) {
+ erts_aint32_t state;
+ Process *rp;
+
+ if (BIF_ARG_1 == BIF_P->common.id)
+ BIF_RET(am_true);
+
+ rp = erts_proc_lookup_raw(BIF_ARG_1);
+ if (!rp)
+ BIF_RET(am_false);
+
+ state = erts_atomic32_read_acqb(&rp->state);
+ if (state & (ERTS_PSFLG_EXITING
+ | ERTS_PSFLG_SIG_Q
+ | ERTS_PSFLG_SIG_IN_Q)) {
+ /*
+ * If in exiting state, trap out and send 'is alive'
+ * request and wait for it to complete termination.
+ *
+ * If process has signals enqueued, we need to
+ * send it an 'is alive' request via its signal
+ * queue in order to ensure that signal order is
+ * preserved (we may earlier have sent it an
+ * exit signal that has not been processed yet).
+ */
+ BIF_TRAP1(is_process_alive_trap, BIF_P, BIF_ARG_1);
+ }
+
+ BIF_RET(am_true);
+ }
+
+ if (is_external_pid(BIF_ARG_1)) {
+ if (external_pid_dist_entry(BIF_ARG_1) == erts_this_dist_entry)
BIF_RET(am_false); /* A pid from an old incarnation of this node */
- else
- BIF_ERROR(BIF_P, BADARG);
- }
- else {
- BIF_ERROR(BIF_P, BADARG);
}
+
+ BIF_ERROR(BIF_P, BADARG);
}
BIF_RETTYPE process_display_2(BIF_ALIST_2)
@@ -5007,6 +5029,10 @@ erts_bif_info_init(void)
= erts_export_put(am_erts_internal, am_gather_microstate_accounting_result, 2);
gather_system_check_res_trap
= erts_export_put(am_erts_internal, am_gather_system_check_result, 1);
+
+ is_process_alive_trap = erts_export_put(am_erts_internal, am_is_process_alive, 1);
+
+
process_info_init();
os_info_init();
}
diff --git a/erts/emulator/beam/erl_bits.h b/erts/emulator/beam/erl_bits.h
index b9d141d585..a3816fa820 100644
--- a/erts/emulator/beam/erl_bits.h
+++ b/erts/emulator/beam/erl_bits.h
@@ -111,7 +111,7 @@ typedef struct erl_bin_match_struct{
#define copy_binary_to_buffer(DstBuffer, DstBufOffset, SrcBuffer, SrcBufferOffset, NumBits) \
do { \
if (BIT_OFFSET(DstBufOffset) == 0 && (SrcBufferOffset == 0) && \
- (BIT_OFFSET(NumBits)==0)) { \
+ (BIT_OFFSET(NumBits)==0) && (NumBits != 0)) { \
sys_memcpy(DstBuffer+BYTE_OFFSET(DstBufOffset), \
SrcBuffer, NBYTES(NumBits)); \
} else { \
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 83ed2e4cd6..1e20d48a73 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -62,7 +62,7 @@
# include <sys/resource.h>
#endif
-#define ERTS_DEFAULT_NO_ASYNC_THREADS 10
+#define ERTS_DEFAULT_NO_ASYNC_THREADS 1
#define ERTS_DEFAULT_SCHED_STACK_SIZE 128
#define ERTS_DEFAULT_DCPU_SCHED_STACK_SIZE 40
diff --git a/erts/emulator/beam/erl_map.c b/erts/emulator/beam/erl_map.c
index 8047a9567f..4ec6960997 100644
--- a/erts/emulator/beam/erl_map.c
+++ b/erts/emulator/beam/erl_map.c
@@ -490,7 +490,9 @@ Eterm erts_map_from_ks_and_vs(ErtsHeapFactory *factory, Eterm *ks0, Eterm *vs0,
sys_memcpy(ks, ks0, n * sizeof(Eterm));
sys_memcpy(vs, vs0, n * sizeof(Eterm));
- erts_validate_and_sort_flatmap(mp);
+ if (!erts_validate_and_sort_flatmap(mp)) {
+ return THE_NON_VALUE;
+ }
return make_flatmap(mp);
} else {
diff --git a/erts/emulator/beam/erl_message.c b/erts/emulator/beam/erl_message.c
index ed7a9d37c2..98feb95d99 100644
--- a/erts/emulator/beam/erl_message.c
+++ b/erts/emulator/beam/erl_message.c
@@ -323,7 +323,7 @@ erts_queue_dist_message(Process *rcvr,
* TODO: We don't know the real size of the external message here.
* -1 will appear to a D script as 4294967295.
*/
- DTRACE6(message_queued, receiver_name, -1, rcvr->msg.len + 1,
+ DTRACE6(message_queued, receiver_name, -1, rcvr->sig_qs.len + 1,
tok_label, tok_lastcnt, tok_serial);
}
#endif
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index cd4fd7b635..f883b3f1e3 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1966,6 +1966,12 @@ ErlNifTid enif_thread_self(void) { return erl_drv_thread_self(); }
int enif_equal_tids(ErlNifTid tid1, ErlNifTid tid2) { return erl_drv_equal_tids(tid1,tid2); }
void enif_thread_exit(void *resp) { erl_drv_thread_exit(resp); }
int enif_thread_join(ErlNifTid tid, void **respp) { return erl_drv_thread_join(tid,respp); }
+
+char* enif_mutex_name(ErlNifMutex *mtx) {return erl_drv_mutex_name(mtx); }
+char* enif_cond_name(ErlNifCond *cnd) { return erl_drv_cond_name(cnd); }
+char* enif_rwlock_name(ErlNifRWLock* rwlck) { return erl_drv_rwlock_name(rwlck); }
+char* enif_thread_name(ErlNifTid tid) { return erl_drv_thread_name(tid); }
+
int enif_getenv(const char *key, char *value, size_t *value_size) { return erl_drv_getenv(key, value, value_size); }
ErlNifTime enif_monotonic_time(ErlNifTimeUnit time_unit)
@@ -1988,16 +1994,21 @@ enif_convert_time_unit(ErlNifTime val,
(int) to);
}
-int enif_fprintf(void* filep, const char* format, ...)
+int enif_fprintf(FILE* filep, const char* format, ...)
{
int ret;
va_list arglist;
va_start(arglist, format);
- ret = erts_vfprintf((FILE*)filep, format, arglist);
+ ret = erts_vfprintf(filep, format, arglist);
va_end(arglist);
return ret;
}
+int enif_vfprintf(FILE* filep, const char *format, va_list ap)
+{
+ return erts_vfprintf(filep, format, ap);
+}
+
int enif_snprintf(char *buffer, size_t size, const char* format, ...)
{
int ret;
@@ -2008,6 +2019,12 @@ int enif_snprintf(char *buffer, size_t size, const char* format, ...)
return ret;
}
+int enif_vsnprintf(char* buffer, size_t size, const char *format, va_list ap)
+{
+ return erts_vsnprintf(buffer, size, format, ap);
+}
+
+
/***********************************************************
** Memory managed (GC'ed) "resource" objects **
***********************************************************/
@@ -2917,6 +2934,44 @@ ERL_NIF_TERM enif_make_new_map(ErlNifEnv* env)
return make_flatmap(mp);
}
+int enif_make_map_from_arrays(ErlNifEnv *env,
+ ERL_NIF_TERM keys[],
+ ERL_NIF_TERM values[],
+ size_t cnt,
+ ERL_NIF_TERM *map_out)
+{
+ ErtsHeapFactory factory;
+ int succeeded;
+
+#ifdef ERTS_NIF_ASSERT_IN_ENV
+ size_t index = 0;
+
+ while (index < cnt) {
+ ASSERT_IN_ENV(env, keys[index], index, "key");
+ ASSERT_IN_ENV(env, values[index], index, "value");
+ index++;
+ }
+#endif
+
+ flush_env(env);
+
+ erts_factory_proc_prealloc_init(&factory, env->proc,
+ cnt * 2 + MAP_HEADER_FLATMAP_SZ + 1);
+
+ (*map_out) = erts_map_from_ks_and_vs(&factory, keys, values, cnt);
+ succeeded = (*map_out) != THE_NON_VALUE;
+
+ if (!succeeded) {
+ erts_factory_undo(&factory);
+ }
+
+ erts_factory_close(&factory);
+
+ cache_env(env);
+
+ return succeeded;
+}
+
int enif_make_map_put(ErlNifEnv* env,
Eterm map_in,
Eterm key,
@@ -3843,6 +3898,11 @@ static struct erl_module_nif* create_lib(const ErlNifEntry* src)
} else {
dst->sizeof_ErlNifResourceTypeInit = 0;
}
+ if (AT_LEAST_VERSION(src, 2, 14)) {
+ dst->min_erts = src->min_erts;
+ } else {
+ dst->min_erts = "erts-?";
+ }
return lib;
};
@@ -3955,14 +4015,20 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
(entry = erts_sys_ddll_call_nif_init(init_func)) == NULL)) {
ret = load_nif_error(BIF_P, bad_lib, "Library init-call unsuccessful");
}
+ else if (entry->major > ERL_NIF_MAJOR_VERSION
+ || (entry->major == ERL_NIF_MAJOR_VERSION
+ && entry->minor > ERL_NIF_MINOR_VERSION)) {
+ char* fmt = "That '%T' NIF library needs %s or newer. Either try to"
+ " recompile the NIF lib or use a newer erts runtime.";
+ ret = load_nif_error(BIF_P, bad_lib, fmt, mod_atom, entry->min_erts);
+ }
else if (entry->major < ERL_NIF_MIN_REQUIRED_MAJOR_VERSION_ON_LOAD
- || (ERL_NIF_MAJOR_VERSION < entry->major
- || (ERL_NIF_MAJOR_VERSION == entry->major
- && ERL_NIF_MINOR_VERSION < entry->minor))
|| (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);
+ char* fmt = "That old NIF library (%d.%d) is not compatible with this "
+ "erts runtime (%d.%d). Try recompile the NIF lib.";
+ ret = load_nif_error(BIF_P, bad_lib, fmt, entry->major, entry->minor,
+ ERL_NIF_MAJOR_VERSION, ERL_NIF_MINOR_VERSION);
}
else if (AT_LEAST_VERSION(entry, 2, 1)
&& sys_strcmp(entry->vm_variant, ERL_NIF_VM_VARIANT) != 0) {
diff --git a/erts/emulator/beam/erl_nif.h b/erts/emulator/beam/erl_nif.h
index a99b4db705..1906da732b 100644
--- a/erts/emulator/beam/erl_nif.h
+++ b/erts/emulator/beam/erl_nif.h
@@ -52,10 +52,12 @@
** 2.11: 19.0 enif_snprintf
** 2.12: 20.0 add enif_select, enif_open_resource_type_x
** 2.13: 20.1 add enif_ioq
-** 2.14: 21.0 add enif_ioq_peek_head
+** 2.14: 21.0 add enif_ioq_peek_head, enif_(mutex|cond|rwlock|thread)_name
+** enif_vfprintf, enif_vsnprintf, enif_make_map_from_arrays
*/
#define ERL_NIF_MAJOR_VERSION 2
#define ERL_NIF_MINOR_VERSION 14
+#define ERL_NIF_MIN_ERTS_VERSION "erts-10.0 (OTP-21)"
/*
* The emulator will refuse to load a nif-lib with a major version
@@ -70,6 +72,8 @@
#define ERL_NIF_MIN_REQUIRED_MAJOR_VERSION_ON_LOAD 2
#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
@@ -128,6 +132,9 @@ typedef struct enif_entry_t
/* Added in 2.12 */
size_t sizeof_ErlNifResourceTypeInit;
+
+ /* Added in 2.14 */
+ const char* min_erts;
}ErlNifEntry;
@@ -350,7 +357,8 @@ ERL_NIF_INIT_DECL(NAME) \
LOAD, RELOAD, UPGRADE, UNLOAD, \
ERL_NIF_VM_VARIANT, \
1, \
- sizeof(ErlNifResourceTypeInit) \
+ sizeof(ErlNifResourceTypeInit), \
+ ERL_NIF_MIN_ERTS_VERSION \
}; \
ERL_NIF_INIT_BODY; \
return &entry; \
diff --git a/erts/emulator/beam/erl_nif_api_funcs.h b/erts/emulator/beam/erl_nif_api_funcs.h
index 3750fd9b68..61f8fcf6ed 100644
--- a/erts/emulator/beam/erl_nif_api_funcs.h
+++ b/erts/emulator/beam/erl_nif_api_funcs.h
@@ -92,7 +92,7 @@ ERL_NIF_API_FUNC_DECL(int,enif_thread_join,(ErlNifTid, void **respp));
ERL_NIF_API_FUNC_DECL(void*,enif_realloc,(void* ptr, size_t size));
ERL_NIF_API_FUNC_DECL(void,enif_system_info,(ErlNifSysInfo *sip, size_t si_size));
-ERL_NIF_API_FUNC_DECL(int,enif_fprintf,(void/* FILE* */ *filep, const char *format, ...));
+ERL_NIF_API_FUNC_DECL(int,enif_fprintf,(FILE* filep, const char *format, ...));
ERL_NIF_API_FUNC_DECL(int,enif_inspect_iolist_as_binary,(ErlNifEnv*, ERL_NIF_TERM term, ErlNifBinary* bin));
ERL_NIF_API_FUNC_DECL(ERL_NIF_TERM,enif_make_sub_binary,(ErlNifEnv*, ERL_NIF_TERM bin_term, size_t pos, size_t size));
ERL_NIF_API_FUNC_DECL(int,enif_get_string,(ErlNifEnv*, ERL_NIF_TERM list, char* buf, unsigned len, ErlNifCharEncoding));
@@ -200,6 +200,16 @@ ERL_NIF_API_FUNC_DECL(void,enif_free_iovec,(ErlNifIOVec *iov));
ERL_NIF_API_FUNC_DECL(int,enif_ioq_peek_head,(ErlNifEnv *env, ErlNifIOQueue *q, size_t *size, ERL_NIF_TERM *head));
+ERL_NIF_API_FUNC_DECL(char*,enif_mutex_name,(ErlNifMutex*));
+ERL_NIF_API_FUNC_DECL(char*,enif_cond_name,(ErlNifCond*));
+ERL_NIF_API_FUNC_DECL(char*,enif_rwlock_name,(ErlNifRWLock*));
+ERL_NIF_API_FUNC_DECL(char*,enif_thread_name,(ErlNifTid));
+
+ERL_NIF_API_FUNC_DECL(int,enif_vfprintf,(FILE*, const char *fmt, va_list));
+ERL_NIF_API_FUNC_DECL(int,enif_vsnprintf,(char*, size_t, const char *fmt, va_list));
+
+ERL_NIF_API_FUNC_DECL(int,enif_make_map_from_arrays,(ErlNifEnv *env, ERL_NIF_TERM keys[], ERL_NIF_TERM values[], size_t cnt, ERL_NIF_TERM *map_out));
+
/*
** ADD NEW ENTRIES HERE (before this comment) !!!
*/
@@ -375,6 +385,13 @@ ERL_NIF_API_FUNC_DECL(int,enif_ioq_peek_head,(ErlNifEnv *env, ErlNifIOQueue *q,
# define enif_inspect_iovec ERL_NIF_API_FUNC_MACRO(enif_inspect_iovec)
# define enif_free_iovec ERL_NIF_API_FUNC_MACRO(enif_free_iovec)
# define enif_ioq_peek_head ERL_NIF_API_FUNC_MACRO(enif_ioq_peek_head)
+# define enif_mutex_name ERL_NIF_API_FUNC_MACRO(enif_mutex_name)
+# define enif_cond_name ERL_NIF_API_FUNC_MACRO(enif_cond_name)
+# define enif_rwlock_name ERL_NIF_API_FUNC_MACRO(enif_rwlock_name)
+# define enif_thread_name ERL_NIF_API_FUNC_MACRO(enif_thread_name)
+# define enif_vfprintf ERL_NIF_API_FUNC_MACRO(enif_vfprintf)
+# define enif_vsnprintf ERL_NIF_API_FUNC_MACRO(enif_vsnprintf)
+# define enif_make_map_from_arrays ERL_NIF_API_FUNC_MACRO(enif_make_map_from_arrays)
/*
** ADD NEW ENTRIES HERE (before this comment)
diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c
index ca83e70046..1f147011a8 100644
--- a/erts/emulator/beam/erl_node_tables.c
+++ b/erts/emulator/beam/erl_node_tables.c
@@ -1051,14 +1051,16 @@ static void erts_lcnt_enable_dist_lock_count(void *dep_raw, void *enable) {
if(enable) {
erts_lcnt_install_new_lock_info(&dep->rwmtx.lcnt, "dist_entry", dep->sysname,
ERTS_LOCK_TYPE_RWMUTEX | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION);
- erts_lcnt_install_new_lock_info(&dep->lnk_mtx.lcnt, "dist_entry_links", dep->sysname,
- ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION);
erts_lcnt_install_new_lock_info(&dep->qlock.lcnt, "dist_entry_out_queue", dep->sysname,
ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION);
+ if (dep->mld)
+ erts_lcnt_install_new_lock_info(&dep->mld->mtx.lcnt, "dist_entry_links", dep->sysname,
+ ERTS_LOCK_TYPE_MUTEX | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION);
} else {
erts_lcnt_uninstall(&dep->rwmtx.lcnt);
- erts_lcnt_uninstall(&dep->lnk_mtx.lcnt);
erts_lcnt_uninstall(&dep->qlock.lcnt);
+ if (dep->mld)
+ erts_lcnt_uninstall(&dep->mld->mtx.lcnt);
}
}
diff --git a/erts/emulator/beam/erl_posix_str.c b/erts/emulator/beam/erl_posix_str.c
index deb7e3e173..7b3e640d3f 100644
--- a/erts/emulator/beam/erl_posix_str.c
+++ b/erts/emulator/beam/erl_posix_str.c
@@ -156,6 +156,9 @@ erl_errno_id(error)
#ifdef EFAULT
case EFAULT: return "efault";
#endif
+#ifdef EFTYPE
+ case EFTYPE: return "eftype";
+#endif
#ifdef EFBIG
case EFBIG: return "efbig";
#endif
@@ -351,6 +354,9 @@ erl_errno_id(error)
#if defined(EOPNOTSUPP) && (!defined(ENOTSUP) || (EOPNOTSUPP != ENOTSUP))
case EOPNOTSUPP: return "eopnotsupp";
#endif
+#ifdef EOVERFLOW
+ case EOVERFLOW: return "eoverflow";
+#endif
#ifdef EPERM
case EPERM: return "eperm";
#endif
diff --git a/erts/emulator/beam/erl_proc_sig_queue.c b/erts/emulator/beam/erl_proc_sig_queue.c
index 1b5cbb1919..99d20e9242 100644
--- a/erts/emulator/beam/erl_proc_sig_queue.c
+++ b/erts/emulator/beam/erl_proc_sig_queue.c
@@ -40,6 +40,7 @@
#include "erl_gc.h"
#include "bif.h"
#include "erl_proc_sig_queue.h"
+#include "dtrace-wrapper.h"
#define ERTS_SIG_REDS_CNT_FACTOR 4
#define ERTS_PROC_SIG_TRACE_COUNT_LIMIT 200
@@ -48,7 +49,7 @@
* Note that not all signal are handled using this functionality!
*/
-#define ERTS_SIG_Q_OP_MAX 9
+#define ERTS_SIG_Q_OP_MAX 10
#define ERTS_SIG_Q_OP_EXIT 0
#define ERTS_SIG_Q_OP_EXIT_LINKED 1
@@ -59,7 +60,8 @@
#define ERTS_SIG_Q_OP_UNLINK 6
#define ERTS_SIG_Q_OP_GROUP_LEADER 7
#define ERTS_SIG_Q_OP_TRACE_CHANGE_STATE 8
-#define ERTS_SIG_Q_OP_PERSISTENT_MON_MSG ERTS_SIG_Q_OP_MAX
+#define ERTS_SIG_Q_OP_PERSISTENT_MON_MSG 9
+#define ERTS_SIG_Q_OP_IS_ALIVE ERTS_SIG_Q_OP_MAX
#define ERTS_SIG_Q_TYPE_MAX (ERTS_MON_LNK_TYPE_MAX + 5)
@@ -184,6 +186,11 @@ typedef struct {
Eterm heap[1];
} ErtsSigGroupLeader;
+typedef struct {
+ Eterm message;
+ Eterm requester;
+} ErtsIsAliveRequest;
+
static int handle_msg_tracing(Process *c_p,
ErtsSigRecvTracing *tracing,
ErtsMessage ***next_nm_sig);
@@ -359,20 +366,47 @@ sig_enqueue_trace(Process *c_p, ErtsMessage *sig, int op,
#ifdef USE_VM_PROBES
case ERTS_SIG_Q_OP_EXIT:
- case ERTS_SIG_Q_OP_EXIT_LINKED: {
- ErtsExitSignalData *xsigd = get_exit_signal_data(sig);
- if(DTRACE_ENABLED(process_exit_signal) && is_pid(xsigd->from)) {
- DTRACE_CHARBUF(sender_str, DTRACE_TERM_BUF_SIZE);
- DTRACE_CHARBUF(receiver_str, DTRACE_TERM_BUF_SIZE);
- DTRACE_CHARBUF(reason_buf, DTRACE_TERM_BUF_SIZE);
+ case ERTS_SIG_Q_OP_EXIT_LINKED:
+
+ if (DTRACE_ENABLED(process_exit_signal)) {
+ Uint16 type = ERTS_PROC_SIG_TYPE(((ErtsSignal *) sig)->common.tag);
+ Eterm reason, from;
+
+ if (type == ERTS_SIG_Q_TYPE_GEN_EXIT) {
+ ErtsExitSignalData *xsigd = get_exit_signal_data(sig);
+ reason = xsigd->reason;
+ from = xsigd->from;
+ }
+ else {
+ ErtsLink *lnk = (ErtsLink *) sig, *olnk;
+
+ ASSERT(type == ERTS_LNK_TYPE_PROC
+ || type == ERTS_LNK_TYPE_PORT
+ || type == ERTS_LNK_TYPE_DIST_PROC);
+
+ olnk = erts_link_to_other(lnk, NULL);
+ reason = lnk->other.item;
+ from = olnk->other.item;
+ }
+
+ if (is_pid(from)) {
- dtrace_pid_str(from, sender_str);
- dtrace_proc_str(rp, receiver_str);
- erts_snprintf(reason_buf, sizeof(DTRACE_CHARBUF_NAME(reason_buf)) - 1, "%T", reason);
- DTRACE3(process_exit_signal, sender_str, receiver_str, reason_buf);
+ DTRACE_CHARBUF(sender_str, DTRACE_TERM_BUF_SIZE);
+ DTRACE_CHARBUF(receiver_str, DTRACE_TERM_BUF_SIZE);
+ DTRACE_CHARBUF(reason_buf, DTRACE_TERM_BUF_SIZE);
+
+ if (reason == am_kill) {
+ reason = am_killed;
+ }
+
+ dtrace_pid_str(from, sender_str);
+ dtrace_proc_str(rp, receiver_str);
+ erts_snprintf(reason_buf, sizeof(DTRACE_CHARBUF_NAME(reason_buf)) - 1, "%T", reason);
+ DTRACE3(process_exit_signal, sender_str, receiver_str, reason_buf);
+ }
}
break;
- }
+
#endif
default:
@@ -548,6 +582,43 @@ proc_queue_signal(Process *c_p, Eterm pid, ErtsSignal *sig, int op)
return res;
}
+static int
+maybe_elevate_sig_handling_prio(Process *c_p, Eterm other)
+{
+ /*
+ * returns:
+ * > 0 -> elevated prio; process alive or exiting
+ * < 0 -> no elevation needed; process alive or exiting
+ * 0 -> process terminated (free)
+ */
+ int res;
+ Process *rp;
+ erts_aint32_t state, my_prio, other_prio;
+
+ rp = erts_proc_lookup_raw(other);
+ if (!rp)
+ res = 0;
+ else {
+ res = -1;
+ state = erts_atomic32_read_nob(&c_p->state);
+ my_prio = ERTS_PSFLGS_GET_USR_PRIO(state);
+
+ state = erts_atomic32_read_nob(&rp->state);
+ other_prio = ERTS_PSFLGS_GET_USR_PRIO(state);
+
+ if (other_prio > my_prio) {
+ /* Others prio is lower than mine; elevate it... */
+ res = !!erts_sig_prio(other, my_prio);
+ if (res) {
+ /* ensure handled if dirty executing... */
+ state = erts_atomic32_read_nob(&rp->state);
+ ensure_dirty_proc_handled(other, state, my_prio);
+ }
+ }
+ }
+ return res;
+}
+
void
erts_proc_sig_fetch(Process *proc)
{
@@ -681,13 +752,14 @@ send_gen_exit_signal(Process *c_p, Eterm from_tag,
seq_trace_update_send(c_p);
#ifdef USE_VM_PROBES
+ utag_sz = 0;
+ utag = NIL;
if (c_p && token != NIL && (DT_UTAG_FLAGS(c_p) & DT_UTAG_SPREADING)) {
utag_sz = size_object(DT_UTAG(c_p));
utag = DT_UTAG(c_p);
}
else if (token == am_have_dt_utag) {
- utag_sz = 0;
- utag = token = NIL;
+ token = NIL;
}
hsz += utag_sz;
#endif
@@ -765,7 +837,7 @@ send_gen_exit_signal(Process *c_p, Eterm from_tag,
s_utag = (is_immed(utag)
? utag
: copy_struct(utag, utag_sz, &hp, ohp));
- ERL_MESSAGE_DT_UTAG(mp) = utag;
+ ERL_MESSAGE_DT_UTAG(mp) = s_utag;
#endif
ERL_MESSAGE_TERM(mp) = ERTS_PROC_SIG_MAKE_TAG(op,
@@ -1215,33 +1287,10 @@ erts_proc_sig_send_group_leader(Process *c_p, Eterm to, Eterm gl, Eterm ref)
if (!res)
destroy_sig_group_leader(sgl);
else if (c_p) {
- int prio_res = !0;
erts_aint_t flags, rm_flags = ERTS_SIG_GL_FLG_SENDER;
- Process *rp;
- erts_aint32_t state, my_prio, other_prio;
-
- state = erts_atomic32_read_nob(&c_p->state);
- my_prio = ERTS_PSFLGS_GET_USR_PRIO(state);
-
- rp = erts_proc_lookup_raw(to);
- if (!rp)
- prio_res = 0;
- else {
- state = erts_atomic32_read_nob(&rp->state);
- other_prio = ERTS_PSFLGS_GET_USR_PRIO(state);
-
- if (other_prio > my_prio) {
- /* Others prio is lower than mine; elevate it... */
- prio_res = erts_sig_prio(to, my_prio);
- if (prio_res) {
- state = erts_atomic32_read_nob(&rp->state);
- ensure_dirty_proc_handled(to, state, my_prio);
- }
- }
- }
+ int prio_res = maybe_elevate_sig_handling_prio(c_p, to);
if (!prio_res)
rm_flags |= ERTS_SIG_GL_FLG_ACTIVE;
-
flags = erts_atomic_read_band_nob(&sgl->flags, ~rm_flags);
if (!prio_res && (flags & ERTS_SIG_GL_FLG_ACTIVE))
res = 0; /* We deactivated signal... */
@@ -1253,6 +1302,99 @@ erts_proc_sig_send_group_leader(Process *c_p, Eterm to, Eterm gl, Eterm ref)
group_leader_reply(c_p, c_p->common.id, ref, 0);
}
+void
+erts_proc_sig_send_is_alive_request(Process *c_p, Eterm to, Eterm ref)
+{
+ ErlHeapFragment *hfrag;
+ Uint hsz;
+ Eterm *hp, *start_hp, ref_cpy, msg;
+ ErlOffHeap *ohp;
+ ErtsMessage *mp;
+ ErtsIsAliveRequest *alive_req;
+
+ ASSERT(is_internal_ordinary_ref(ref));
+
+ hsz = ERTS_REF_THING_SIZE + 3 + sizeof(ErtsIsAliveRequest)/sizeof(Eterm);
+
+ mp = erts_alloc_message(hsz, &hp);
+ hfrag = &mp->hfrag;
+ mp->next = NULL;
+ ohp = &hfrag->off_heap;
+ start_hp = hp;
+
+ ref_cpy = STORE_NC(&hp, ohp, ref);
+ msg = TUPLE2(hp, ref_cpy, am_false); /* default res 'false' */
+ hp += 3;
+
+ hfrag->used_size = hp - start_hp;
+
+ alive_req = (ErtsIsAliveRequest *) (char *) hp;
+ alive_req->message = msg;
+ alive_req->requester = c_p->common.id;
+
+ ERL_MESSAGE_TERM(mp) = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_IS_ALIVE,
+ ERTS_SIG_Q_TYPE_UNDEFINED,
+ 0);
+ ERL_MESSAGE_TOKEN(mp) = NIL;
+ ERL_MESSAGE_FROM(mp) = am_system;
+#ifdef USE_VM_PROBES
+ ERL_MESSAGE_DT_UTAG(mp) = NIL;
+#endif
+
+ if (proc_queue_signal(c_p, to, (ErtsSignal *) mp, ERTS_SIG_Q_OP_IS_ALIVE))
+ (void) maybe_elevate_sig_handling_prio(c_p, to);
+ else {
+ /* It wasn't alive; reply to ourselves... */
+ mp->next = NULL;
+ mp->data.attached = ERTS_MSG_COMBINED_HFRAG;
+ erts_queue_message(c_p, ERTS_PROC_LOCK_MAIN,
+ mp, msg, am_system);
+ }
+}
+
+static void
+is_alive_response(Process *c_p, ErtsMessage *mp, int is_alive)
+{
+ /*
+ * Sender prepared the message for us. Just patch
+ * the result if necessary. The default prepared
+ * result is 'false'.
+ */
+ Process *rp;
+ ErtsIsAliveRequest *alive_req;
+
+ alive_req = (ErtsIsAliveRequest *) (char *) (&mp->hfrag.mem[0]
+ + mp->hfrag.used_size);
+
+
+ ASSERT(ERTS_SIG_IS_NON_MSG(mp));
+ ASSERT(ERTS_PROC_SIG_OP(((ErtsSignal *) mp)->common.tag)
+ == ERTS_SIG_Q_OP_IS_ALIVE);
+ ASSERT(mp->hfrag.alloc_size > mp->hfrag.used_size);
+ ASSERT((mp->hfrag.alloc_size - mp->hfrag.used_size)*sizeof(UWord)
+ >= sizeof(ErtsIsAliveRequest));
+ ASSERT(is_internal_pid(alive_req->requester));
+ ASSERT(alive_req->requester != c_p->common.id);
+ ASSERT(is_tuple_arity(alive_req->message, 2));
+ ASSERT(is_internal_ordinary_ref(tuple_val(alive_req->message)[1]));
+ ASSERT(tuple_val(alive_req->message)[2] == am_false);
+
+ ERL_MESSAGE_TERM(mp) = alive_req->message;
+ mp->data.attached = ERTS_MSG_COMBINED_HFRAG;
+ mp->next = NULL;
+
+ rp = erts_proc_lookup(alive_req->requester);
+ if (!rp)
+ erts_cleanup_messages(mp);
+ else {
+ if (is_alive) { /* patch result... */
+ Eterm *tp = tuple_val(alive_req->message);
+ tp[2] = am_true;
+ }
+ erts_queue_message(rp, 0, mp, alive_req->message, am_system);
+ }
+}
+
static ERTS_INLINE void
adjust_tracing_state(Process *c_p, ErtsSigRecvTracing *tracing, int setup)
{
@@ -1447,8 +1589,8 @@ handle_exit_signal(Process *c_p, ErtsSigRecvTracing *tracing,
{
ErtsMessage *conv_msg = NULL;
ErtsExitSignalData *xsigd = NULL;
- ErtsLinkData *ldp;
- ErtsLink *dlnk;
+ ErtsLinkData *ldp = NULL; /* Avoid erroneous warning... */
+ ErtsLink *dlnk = NULL; /* Avoid erroneous warning... */
Eterm tag = ((ErtsSignal *) sig)->common.tag;
Uint16 type = ERTS_PROC_SIG_TYPE(tag);
int op = ERTS_PROC_SIG_OP(tag);
@@ -1472,8 +1614,6 @@ handle_exit_signal(Process *c_p, ErtsSigRecvTracing *tracing,
/* Link no longer active; ignore... */
ignore = !0;
destroy = !0;
- ldp = NULL; /* Avoid erroneous warning... */
- dlnk = NULL; /* Avoid erroneous warning... */
}
else {
ignore = 0;
@@ -2355,6 +2495,13 @@ erts_proc_sig_handle_incoming(Process *c_p, erts_aint32_t *statep,
break;
}
+ case ERTS_SIG_Q_OP_IS_ALIVE:
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ is_alive_response(c_p, sig, !0);
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+
case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE: {
Uint16 type = ERTS_PROC_SIG_TYPE(tag);
@@ -2667,6 +2814,12 @@ erts_proc_sig_handle_exit(Process *c_p, int *redsp)
break;
}
+ case ERTS_SIG_Q_OP_IS_ALIVE:
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ is_alive_response(c_p, sig, 0);
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+
case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE:
destroy_trace_info((ErtsSigTraceInfo *) sig);
break;
@@ -2803,6 +2956,7 @@ erts_proc_sig_signal_size(ErtsSignal *sig)
break;
case ERTS_SIG_Q_OP_PERSISTENT_MON_MSG:
+ case ERTS_SIG_Q_OP_IS_ALIVE:
size = ((ErtsMessage *) sig)->hfrag.alloc_size;
size *= sizeof(Eterm);
size += sizeof(ErtsMessage) - sizeof(Eterm);
@@ -3514,6 +3668,7 @@ erts_proc_sig_debug_foreach_sig(Process *c_p,
break;
}
+ case ERTS_SIG_Q_OP_IS_ALIVE:
case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE:
break;
diff --git a/erts/emulator/beam/erl_proc_sig_queue.h b/erts/emulator/beam/erl_proc_sig_queue.h
index 433e30ce4a..56fe3e683e 100644
--- a/erts/emulator/beam/erl_proc_sig_queue.h
+++ b/erts/emulator/beam/erl_proc_sig_queue.h
@@ -31,6 +31,7 @@
* - Link
* - Unlink
* - Group leader
+ * - Is process alive
* - Trace change
*
* The signal queue consists of three parts:
@@ -426,6 +427,30 @@ void
erts_proc_sig_send_group_leader(Process *c_p, Eterm to, Eterm gl,
Eterm ref);
+/**
+ *
+ * @brief Send an 'is process alive' signal to a process.
+ *
+ * A response message '{Ref, Result}' is sent to the
+ * sender when performed where Ref is the reference passed
+ * as 'ref' argument, and Result is either 'true' or 'false'.
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ * NULL if signal arrived via
+ * distribution.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @param[in] ref Reference to use in response
+ * message to the sending
+ * process (i.e., c_p).
+ *
+ */
+void
+erts_proc_sig_send_is_alive_request(Process *c_p, Eterm to,
+ Eterm ref);
+
/*
* End of send operations of currently supported process signals.
*/
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 7969025f57..374583ec47 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -10501,6 +10501,8 @@ done:
return st;
}
+
+static void exit_permanent_prio_elevation(Process *c_p, erts_aint32_t state);
static void save_gc_task(Process *c_p, ErtsProcSysTask *st, int prio);
static void save_dirty_task(Process *c_p, ErtsProcSysTask *st);
@@ -10633,8 +10635,10 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds)
reds, local_only);
reds -= sig_reds;
- if (state & ERTS_PSFLG_EXITING)
- goto perm_elevate_prio;
+ if (state & ERTS_PSFLG_EXITING) {
+ exit_permanent_prio_elevation(c_p, state);
+ break;
+ }
if (sig_res)
break;
@@ -10648,37 +10652,8 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds)
st = NULL;
}
else {
- erts_aint32_t a;
-
state = erts_atomic32_read_nob(&c_p->state);
-
- perm_elevate_prio:
-
- /*
- * we are about to terminate; permanently elevate
- * prio in order to ensure high prio signal
- * handling...
- */
-
- a = state;
- while (1) {
- erts_aint32_t aprio, uprio, n, e;
- ASSERT(!(a & ERTS_PSFLG_FREE));
- aprio = ERTS_PSFLGS_GET_ACT_PRIO(a);
- uprio = ERTS_PSFLGS_GET_USR_PRIO(a);
- if (aprio >= uprio)
- break; /* user prio >= actual prio */
- /*
- * actual prio is higher than user prio; raise
- * user prio to actual prio...
- */
- n = e = a;
- n &= ~ERTS_PSFLGS_USR_PRIO_MASK;
- n |= aprio << ERTS_PSFLGS_USR_PRIO_OFFSET;
- a = erts_atomic32_cmpxchg_mb(&c_p->state, n, e);
- if (a == e)
- break;
- }
+ exit_permanent_prio_elevation(c_p, state);
}
break;
}
@@ -10730,12 +10705,15 @@ cleanup_sys_tasks(Process *c_p, erts_aint32_t in_state, int in_reds)
}
switch (st->type) {
+ case ERTS_PSTT_PRIO_SIG:
+ state = erts_atomic32_read_nob(&c_p->state);
+ exit_permanent_prio_elevation(c_p, state);
+ /* fall through... */
case ERTS_PSTT_GC_MAJOR:
case ERTS_PSTT_GC_MINOR:
case ERTS_PSTT_CPC:
case ERTS_PSTT_COHMQ:
case ERTS_PSTT_ETS_FREE_FIXATION:
- case ERTS_PSTT_PRIO_SIG:
st_res = am_false;
break;
case ERTS_PSTT_CLA:
@@ -10759,6 +10737,36 @@ cleanup_sys_tasks(Process *c_p, erts_aint32_t in_state, int in_reds)
return reds;
}
+static void
+exit_permanent_prio_elevation(Process *c_p, erts_aint32_t state)
+{
+ erts_aint32_t a;
+ /*
+ * we are about to terminate; permanently elevate
+ * prio in order to ensure high prio signal
+ * handling...
+ */
+ a = state;
+ while (1) {
+ erts_aint32_t aprio, uprio, n, e;
+ ASSERT(a & ERTS_PSFLG_EXITING);
+ ASSERT(!(a & ERTS_PSFLG_FREE));
+ aprio = ERTS_PSFLGS_GET_ACT_PRIO(a);
+ uprio = ERTS_PSFLGS_GET_USR_PRIO(a);
+ if (aprio >= uprio)
+ break; /* user prio >= actual prio */
+ /*
+ * actual prio is higher than user prio; raise
+ * user prio to actual prio...
+ */
+ n = e = a;
+ n &= ~ERTS_PSFLGS_USR_PRIO_MASK;
+ n |= aprio << ERTS_PSFLGS_USR_PRIO_OFFSET;
+ a = erts_atomic32_cmpxchg_mb(&c_p->state, n, e);
+ if (a == e)
+ break;
+ }
+}
void
erts_execute_dirty_system_task(Process *c_p)
@@ -12752,16 +12760,13 @@ erts_continue_exit_process(Process *p)
erts_set_gc_state(p, 1);
state = erts_atomic32_read_acqb(&p->state);
- if ((state & ERTS_PSFLG_SYS_TASKS)
- || p->dirty_sys_tasks
- ) {
+ if ((state & ERTS_PSFLG_SYS_TASKS) || p->dirty_sys_tasks) {
if (cleanup_sys_tasks(p, state, CONTEXT_REDS) >= CONTEXT_REDS/2)
goto yield;
}
#ifdef DEBUG
erts_proc_lock(p, ERTS_PROC_LOCK_STATUS);
- ASSERT(p->sys_task_qs == NULL);
ASSERT(ERTS_PROC_GET_DELAYED_GC_TASK_QS(p) == NULL);
ASSERT(p->dirty_sys_tasks == NULL);
erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
@@ -12873,7 +12878,30 @@ erts_continue_exit_process(Process *p)
? ERTS_PROC_SET_DIST_ENTRY(p, NULL)
: NULL);
- erts_proc_unlock(p, ERTS_PROC_LOCKS_ALL);
+
+ /*
+ * It might show up signal prio elevation tasks until we
+ * have entered free state. Cleanup such tasks now.
+ */
+ state = erts_atomic32_read_acqb(&p->state);
+ if (!(state & ERTS_PSFLG_SYS_TASKS))
+ erts_proc_unlock(p, ERTS_PROC_LOCKS_ALL);
+ else {
+ erts_proc_unlock(p, ERTS_PROC_LOCKS_ALL_MINOR);
+
+ do {
+ (void) cleanup_sys_tasks(p, state, CONTEXT_REDS);
+ state = erts_atomic32_read_acqb(&p->state);
+ } while (state & ERTS_PSFLG_SYS_TASKS);
+
+ erts_proc_unlock(p, ERTS_PROC_LOCK_MAIN);
+ }
+
+#ifdef DEBUG
+ erts_proc_lock(p, ERTS_PROC_LOCK_STATUS);
+ ASSERT(p->sys_task_qs == NULL);
+ erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
+#endif
if (dep) {
erts_do_net_exits(dep, (reason == am_kill) ? am_killed : reason);
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index b2afdc6bf2..9f87285b71 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -2361,6 +2361,21 @@ set_port_connected(int bang_op,
trace_port(prt, am_getting_linked, connect);
}
+#ifdef USE_VM_PROBES
+ if (DTRACE_ENABLED(port_connect)) {
+ Eterm old_connected = ERTS_PORT_GET_CONNECTED(prt);
+ DTRACE_CHARBUF(process_str, DTRACE_TERM_BUF_SIZE);
+ DTRACE_CHARBUF(port_str, DTRACE_TERM_BUF_SIZE);
+ DTRACE_CHARBUF(newprocess_str, DTRACE_TERM_BUF_SIZE);
+
+ dtrace_pid_str(old_connected, process_str);
+ erts_snprintf(port_str, sizeof(DTRACE_CHARBUF_NAME(port_str)),
+ "%T", prt->common.id);
+ dtrace_pid_str(connect, newprocess_str);
+ DTRACE4(port_connect, process_str, port_str, prt->name, newprocess_str);
+ }
+#endif
+
ERTS_PORT_SET_CONNECTED(prt, connect);
if (IS_TRACED_FL(prt, F_TRACE_RECEIVE))
@@ -2370,18 +2385,6 @@ set_port_connected(int bang_op,
trace_port_send(prt, from, TUPLE2(hp, prt->common.id, am_connected), 1);
}
-#ifdef USE_VM_PROBES
- if (DTRACE_ENABLED(port_connect)) {
- DTRACE_CHARBUF(process_str, DTRACE_TERM_BUF_SIZE);
- DTRACE_CHARBUF(port_str, DTRACE_TERM_BUF_SIZE);
- DTRACE_CHARBUF(newprocess_str, DTRACE_TERM_BUF_SIZE);
-
- dtrace_pid_str(connect, process_str);
- erts_snprintf(port_str, sizeof(DTRACE_CHARBUF_NAME(port_str)), "%T", prt->common.id);
- dtrace_proc_str(rp, newprocess_str);
- DTRACE4(port_connect, process_str, port_str, prt->name, newprocess_str);
- }
-#endif
}
return ERTS_PORT_OP_DONE;
diff --git a/erts/emulator/beam/msg_instrs.tab b/erts/emulator/beam/msg_instrs.tab
index 88d2ef9fa3..6055e35717 100644
--- a/erts/emulator/beam/msg_instrs.tab
+++ b/erts/emulator/beam/msg_instrs.tab
@@ -235,7 +235,7 @@ remove_message() {
}
DTRACE6(message_receive,
receiver_name, size_object(ERL_MESSAGE_TERM(msgp)),
- c_p->msg.len - 1, tok_label, tok_lastcnt, tok_serial);
+ c_p->sig_qs.len - 1, tok_label, tok_lastcnt, tok_serial);
}
#endif
UNLINK_MESSAGE(c_p, msgp);
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index 152da8c9e1..c21acadd8d 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -1004,9 +1004,7 @@ erts_refc_read(erts_refc_t *refcp, erts_aint_t min_val)
* may seemingly work when the length (if any) is zero; a compiler can take
* this as a hint that the passed operand may *never* be NULL and then optimize
* based on that information.
- *
- * (The weird casts in the assertions silence an "always evaluates to true"
- * warning when an operand is the address of an lvalue) */
+ */
ERTS_GLB_INLINE void *sys_memcpy(void *dest, const void *src, size_t n);
ERTS_GLB_INLINE void *sys_memmove(void *dest, const void *src, size_t n);
ERTS_GLB_INLINE int sys_memcmp(const void *s1, const void *s2, size_t n);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 00:14:19 +0000