/* Return value as a bif, called by erlang:monitor */
Eterm erts_ddll_monitor_driver(Process *p,
Eterm description,
ErtsProcLocks plocks)
{
Eterm *tp;
Eterm ret;
char *name;
if (is_not_tuple(description)) {
BIF_ERROR(p,BADARG);
}
tp = tuple_val(description);
if (*tp != make_arityval(2)) {
BIF_ERROR(p,BADARG);
}
if ((name = pick_list_or_atom(tp[1])) == NULL) {
BIF_ERROR(p,BADARG);
}
switch (tp[2]) {
case am_loaded:
ERTS_BIF_PREP_RET(ret, notify_when_loaded(p,tp[1],name,plocks));
break;
case am_unloaded:
ERTS_BIF_PREP_RET(ret, notify_when_unloaded(p,tp[1],name,plocks,
ERL_DE_PROC_AWAIT_UNLOAD));
break;
case am_unloaded_only:
ERTS_BIF_PREP_RET(ret,
notify_when_unloaded(p,tp[1],name,plocks,
ERL_DE_PROC_AWAIT_UNLOAD_ONLY));
break;
default:
ERTS_BIF_PREP_ERROR(ret,p,BADARG);
break;
}
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
return ret;
}
/* Do the actualy module purging and return:
* true for success
* false if no such old module
* BADARG if not an atom
*/
BIF_RETTYPE erts_internal_purge_module_1(BIF_ALIST_1)
{
ErtsCodeIndex code_ix;
BeamInstr* code;
BeamInstr* end;
Module* modp;
int is_blocking = 0;
Eterm ret;
if (is_not_atom(BIF_ARG_1)) {
BIF_ERROR(BIF_P, BADARG);
}
if (!erts_try_seize_code_write_permission(BIF_P)) {
ERTS_BIF_YIELD1(bif_export[BIF_erts_internal_purge_module_1],
BIF_P, BIF_ARG_1);
}
code_ix = erts_active_code_ix();
/*
* Correct module?
*/
if ((modp = erts_get_module(BIF_ARG_1, code_ix)) == NULL) {
ERTS_BIF_PREP_RET(ret, am_false);
}
else {
erts_rwlock_old_code(code_ix);
/*
* Any code to purge?
*/
if (!modp->old.code_hdr) {
ERTS_BIF_PREP_RET(ret, am_false);
}
else {
/*
* Unload any NIF library
*/
if (modp->old.nif != NULL) {
/* ToDo: Do unload nif without blocking */
erts_rwunlock_old_code(code_ix);
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
is_blocking = 1;
erts_rwlock_old_code(code_ix);
erts_unload_nif(modp->old.nif);
modp->old.nif = NULL;
}
/*
* Remove the old code.
*/
ASSERT(erts_total_code_size >= modp->old.code_length);
erts_total_code_size -= modp->old.code_length;
code = (BeamInstr*) modp->old.code_hdr;
end = (BeamInstr *)((char *)code + modp->old.code_length);
erts_cleanup_funs_on_purge(code, end);
beam_catches_delmod(modp->old.catches, code, modp->old.code_length,
code_ix);
decrement_refc(modp->old.code_hdr);
if (modp->old.code_hdr->literals_start) {
erts_free(ERTS_ALC_T_LITERAL, modp->old.code_hdr->literals_start);
}
erts_free(ERTS_ALC_T_CODE, (void *) code);
modp->old.code_hdr = NULL;
modp->old.code_length = 0;
modp->old.catches = BEAM_CATCHES_NIL;
erts_remove_from_ranges(code);
ERTS_BIF_PREP_RET(ret, am_true);
}
erts_rwunlock_old_code(code_ix);
}
if (is_blocking) {
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
}
erts_release_code_write_permission();
return ret;
}
static BIF_RETTYPE
dirty_test(Process *c_p, Eterm type, Eterm arg1, Eterm arg2, UWord *I)
{
BIF_RETTYPE ret;
if (am_scheduler == arg1) {
ErtsSchedulerData *esdp;
if (arg2 != am_type)
goto badarg;
esdp = erts_proc_sched_data(c_p);
if (!esdp)
goto scheduler_type_error;
switch (esdp->type) {
case ERTS_SCHED_NORMAL:
ERTS_BIF_PREP_RET(ret, am_normal);
break;
case ERTS_SCHED_DIRTY_CPU:
ERTS_BIF_PREP_RET(ret, am_dirty_cpu);
break;
case ERTS_SCHED_DIRTY_IO:
ERTS_BIF_PREP_RET(ret, am_dirty_io);
break;
default:
scheduler_type_error:
ERTS_BIF_PREP_RET(ret, am_error);
break;
}
}
else if (am_error == arg1) {
switch (arg2) {
case am_notsup:
ERTS_BIF_PREP_ERROR(ret, c_p, EXC_NOTSUP);
break;
case am_undef:
ERTS_BIF_PREP_ERROR(ret, c_p, EXC_UNDEF);
break;
case am_badarith:
ERTS_BIF_PREP_ERROR(ret, c_p, EXC_BADARITH);
break;
case am_noproc:
ERTS_BIF_PREP_ERROR(ret, c_p, EXC_NOPROC);
break;
case am_system_limit:
ERTS_BIF_PREP_ERROR(ret, c_p, SYSTEM_LIMIT);
break;
case am_badarg:
default:
goto badarg;
}
}
else if (am_copy == arg1) {
int i;
Eterm res;
for (res = NIL, i = 0; i < 1000; i++) {
Eterm *hp, sz;
Eterm cpy;
/* We do not want this to be optimized,
but rather the oposite... */
sz = size_object(arg2);
hp = HAlloc(c_p, sz);
cpy = copy_struct(arg2, sz, &hp, &c_p->off_heap);
hp = HAlloc(c_p, 2);
res = CONS(hp, cpy, res);
}
ERTS_BIF_PREP_RET(ret, res);
}
else if (am_send == arg1) {
dirty_send_message(c_p, arg2, am_ok);
ERTS_BIF_PREP_RET(ret, am_ok);
}
else if (ERTS_IS_ATOM_STR("wait", arg1)) {
if (!ms_wait(c_p, arg2, type == am_dirty_cpu))
goto badarg;
ERTS_BIF_PREP_RET(ret, am_ok);
}
else if (ERTS_IS_ATOM_STR("reschedule", arg1)) {
/*
* Reschedule operation after decrement of two until we reach
* zero. Switch between dirty scheduler types when 'n' is
* evenly divided by 4. If the initial value wasn't evenly
* dividable by 2, throw badarg exception.
*/
Eterm next_type;
Sint n;
if (!term_to_Sint(arg2, &n) || n < 0)
goto badarg;
if (n == 0)
ERTS_BIF_PREP_RET(ret, am_ok);
else {
Eterm argv[3];
Eterm eint = erts_make_integer((Uint) (n - 2), c_p);
if (n % 4 != 0)
next_type = type;
else {
switch (type) {
case am_dirty_cpu: next_type = am_dirty_io; break;
case am_dirty_io: next_type = am_normal; break;
case am_normal: next_type = am_dirty_cpu; break;
default: goto badarg;
}
}
switch (next_type) {
case am_dirty_io:
argv[0] = arg1;
argv[1] = eint;
ret = erts_schedule_bif(c_p,
argv,
I,
erts_debug_dirty_io_2,
ERTS_SCHED_DIRTY_IO,
am_erts_debug,
am_dirty_io,
2);
break;
case am_dirty_cpu:
argv[0] = arg1;
argv[1] = eint;
ret = erts_schedule_bif(c_p,
argv,
I,
erts_debug_dirty_cpu_2,
ERTS_SCHED_DIRTY_CPU,
am_erts_debug,
am_dirty_cpu,
2);
break;
case am_normal:
argv[0] = am_normal;
argv[1] = arg1;
argv[2] = eint;
ret = erts_schedule_bif(c_p,
argv,
I,
erts_debug_dirty_3,
ERTS_SCHED_NORMAL,
am_erts_debug,
am_dirty,
3);
break;
default:
goto badarg;
}
}
}
else if (ERTS_IS_ATOM_STR("ready_wait6_done", arg1)) {
ERTS_DECL_AM(ready);
ERTS_DECL_AM(done);
dirty_send_message(c_p, arg2, AM_ready);
ms_wait(c_p, make_small(6000), 0);
dirty_send_message(c_p, arg2, AM_done);
ERTS_BIF_PREP_RET(ret, am_ok);
}
else if (ERTS_IS_ATOM_STR("alive_waitexiting", arg1)) {
Process *real_c_p = erts_proc_shadow2real(c_p);
Eterm *hp, *hp2;
Uint sz;
int i;
ErtsSchedulerData *esdp = erts_proc_sched_data(c_p);
int dirty_io = esdp->type == ERTS_SCHED_DIRTY_IO;
if (ERTS_PROC_IS_EXITING(real_c_p))
goto badarg;
dirty_send_message(c_p, arg2, am_alive);
/* Wait until dead */
while (!ERTS_PROC_IS_EXITING(real_c_p)) {
if (dirty_io)
ms_wait(c_p, make_small(100), 0);
else
erts_thr_yield();
}
ms_wait(c_p, make_small(1000), 0);
/* Should still be able to allocate memory */
hp = HAlloc(c_p, 3); /* Likely on heap */
sz = 10000;
hp2 = HAlloc(c_p, sz); /* Likely in heap fragment */
*hp2 = make_pos_bignum_header(sz);
for (i = 1; i < sz; i++)
hp2[i] = (Eterm) 4711;
ERTS_BIF_PREP_RET(ret, TUPLE2(hp, am_ok, make_big(hp2)));
}
else {
badarg:
ERTS_BIF_PREP_ERROR(ret, c_p, BADARG);
}
return ret;
}
BIF_RETTYPE erts_internal_port_command_3(BIF_ALIST_3)
{
BIF_RETTYPE res;
Port *prt;
int flags = 0;
Eterm ref;
if (is_not_nil(BIF_ARG_3)) {
Eterm l = BIF_ARG_3;
while (is_list(l)) {
Eterm* cons = list_val(l);
Eterm car = CAR(cons);
if (car == am_force)
flags |= ERTS_PORT_SIG_FLG_FORCE;
else if (car == am_nosuspend)
flags |= ERTS_PORT_SIG_FLG_NOSUSPEND;
else
BIF_RET(am_badarg);
l = CDR(cons);
}
if (!is_nil(l))
BIF_RET(am_badarg);
}
prt = sig_lookup_port(BIF_P, BIF_ARG_1);
if (!prt)
BIF_RET(am_badarg);
if (flags & ERTS_PORT_SIG_FLG_FORCE) {
if (!(prt->drv_ptr->flags & ERL_DRV_FLAG_SOFT_BUSY))
BIF_RET(am_notsup);
}
#ifdef DEBUG
ref = NIL;
#endif
switch (erts_port_output(BIF_P, flags, prt, prt->common.id, BIF_ARG_2, &ref)) {
case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_BADARG:
case ERTS_PORT_OP_DROPPED:
ERTS_BIF_PREP_RET(res, am_badarg);
break;
case ERTS_PORT_OP_BUSY:
ASSERT(!(flags & ERTS_PORT_SIG_FLG_FORCE));
if (flags & ERTS_PORT_SIG_FLG_NOSUSPEND)
ERTS_BIF_PREP_RET(res, am_false);
else {
erts_suspend(BIF_P, ERTS_PROC_LOCK_MAIN, prt);
ERTS_BIF_PREP_YIELD3(res, bif_export[BIF_erts_internal_port_command_3],
BIF_P, BIF_ARG_1, BIF_ARG_2, BIF_ARG_3);
}
break;
case ERTS_PORT_OP_BUSY_SCHEDULED:
ASSERT(!(flags & ERTS_PORT_SIG_FLG_FORCE));
/* Fall through... */
case ERTS_PORT_OP_SCHEDULED:
ASSERT(is_internal_ordinary_ref(ref));
ERTS_BIF_PREP_RET(res, ref);
break;
case ERTS_PORT_OP_DONE:
ERTS_BIF_PREP_RET(res, am_true);
break;
default:
ERTS_INTERNAL_ERROR("Unexpected erts_port_output() result");
break;
}
if (ERTS_PROC_IS_EXITING(BIF_P)) {
KILL_CATCHES(BIF_P); /* Must exit */
ERTS_BIF_PREP_ERROR(res, BIF_P, EXC_ERROR);
}
return res;
}
BIF_RETTYPE erts_internal_purge_module_2(BIF_ALIST_2)
{
if (BIF_P != erts_code_purger)
BIF_ERROR(BIF_P, EXC_NOTSUP);
if (is_not_atom(BIF_ARG_1))
BIF_ERROR(BIF_P, BADARG);
switch (BIF_ARG_2) {
case am_prepare:
case am_prepare_on_load: {
/*
* Prepare for purge by marking all fun
* entries referring to the code to purge
* with "pending purge" markers.
*/
ErtsCodeIndex code_ix;
Module* modp;
Eterm res;
if (is_value(purge_state.module))
BIF_ERROR(BIF_P, BADARG);
code_ix = erts_active_code_ix();
/*
* Correct module?
*/
modp = erts_get_module(BIF_ARG_1, code_ix);
if (!modp)
res = am_false;
else {
/*
* Any code to purge?
*/
if (BIF_ARG_2 == am_prepare_on_load) {
erts_rwlock_old_code(code_ix);
} else {
erts_rlock_old_code(code_ix);
}
if (BIF_ARG_2 == am_prepare_on_load) {
ASSERT(modp->on_load);
ASSERT(modp->on_load->code_hdr);
purge_state.saved_old = modp->old;
modp->old = *modp->on_load;
erts_free(ERTS_ALC_T_PREPARED_CODE, (void *) modp->on_load);
modp->on_load = 0;
}
if (!modp->old.code_hdr)
res = am_false;
else {
BeamInstr* code;
BeamInstr* end;
erts_smp_mtx_lock(&purge_state.mtx);
purge_state.module = BIF_ARG_1;
erts_smp_mtx_unlock(&purge_state.mtx);
res = am_true;
code = (BeamInstr*) modp->old.code_hdr;
end = (BeamInstr *)((char *)code + modp->old.code_length);
erts_fun_purge_prepare(code, end);
}
if (BIF_ARG_2 == am_prepare_on_load) {
erts_rwunlock_old_code(code_ix);
} else {
erts_runlock_old_code(code_ix);
}
}
#ifndef ERTS_SMP
BIF_RET(res);
#else
if (res != am_true)
BIF_RET(res);
else {
/*
* We'll be resumed when all schedulers are guaranteed
* to see the "pending purge" markers that we've made on
* all fun entries of the code that we are about to purge.
* Processes trying to call these funs will be suspended
* before calling the funs. That is we are guaranteed not
* to get any more direct references into the code while
* checking for such references...
*/
erts_schedule_thr_prgr_later_op(resume_purger,
NULL,
&purger_lop_data);
erts_suspend(BIF_P, ERTS_PROC_LOCK_MAIN, NULL);
ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
}
#endif
}
case am_abort: {
/*
* Soft purge that detected direct references into the code
* we set out to purge. Abort the purge.
*/
if (purge_state.module != BIF_ARG_1)
BIF_ERROR(BIF_P, BADARG);
erts_fun_purge_abort_prepare(purge_state.funs, purge_state.fe_ix);
#ifndef ERTS_SMP
erts_fun_purge_abort_finalize(purge_state.funs, purge_state.fe_ix);
finalize_purge_operation(BIF_P, 0);
BIF_RET(am_false);
#else
/*
* We need to restore the code addresses of the funs in
* two stages in order to ensure that we do not get any
* stale suspended processes due to the purge abort.
* Restore address pointer (erts_fun_purge_abort_prepare);
* wait for thread progress; clear pending purge address
* pointer (erts_fun_purge_abort_finalize), and then
* resume processes that got suspended
* (finalize_purge_operation).
*/
erts_schedule_thr_prgr_later_op(finalize_purge_abort,
NULL,
&purger_lop_data);
erts_suspend(BIF_P, ERTS_PROC_LOCK_MAIN, NULL);
ERTS_BIF_YIELD_RETURN(BIF_P, am_false);
#endif
}
case am_complete: {
ErtsCodeIndex code_ix;
BeamInstr* code;
Module* modp;
int is_blocking = 0;
Eterm ret;
ErtsLiteralArea *literals = NULL;
/*
* We have no direct references into the code.
* Complete to purge.
*/
if (purge_state.module != BIF_ARG_1)
BIF_ERROR(BIF_P, BADARG);
if (!erts_try_seize_code_write_permission(BIF_P)) {
ERTS_BIF_YIELD2(bif_export[BIF_erts_internal_purge_module_2],
BIF_P, BIF_ARG_1, BIF_ARG_2);
}
code_ix = erts_active_code_ix();
/*
* Correct module?
*/
if ((modp = erts_get_module(BIF_ARG_1, code_ix)) == NULL) {
ERTS_BIF_PREP_RET(ret, am_false);
}
else {
erts_rwlock_old_code(code_ix);
/*
* Any code to purge?
*/
if (!modp->old.code_hdr) {
ERTS_BIF_PREP_RET(ret, am_false);
}
else {
/*
* Unload any NIF library
*/
if (modp->old.nif != NULL
|| IF_HIPE(hipe_purge_need_blocking(modp))) {
/* ToDo: Do unload nif without blocking */
erts_rwunlock_old_code(code_ix);
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
is_blocking = 1;
erts_rwlock_old_code(code_ix);
if (modp->old.nif) {
erts_unload_nif(modp->old.nif);
modp->old.nif = NULL;
}
}
/*
* Remove the old code.
*/
ASSERT(erts_total_code_size >= modp->old.code_length);
erts_total_code_size -= modp->old.code_length;
code = (BeamInstr*) modp->old.code_hdr;
erts_fun_purge_complete(purge_state.funs, purge_state.fe_ix);
beam_catches_delmod(modp->old.catches, code, modp->old.code_length,
code_ix);
literals = modp->old.code_hdr->literal_area;
modp->old.code_hdr->literal_area = NULL;
erts_free(ERTS_ALC_T_CODE, (void *) code);
modp->old.code_hdr = NULL;
modp->old.code_length = 0;
modp->old.catches = BEAM_CATCHES_NIL;
erts_remove_from_ranges(code);
#ifdef HIPE
hipe_purge_module(modp, is_blocking);
#endif
ERTS_BIF_PREP_RET(ret, am_true);
}
if (purge_state.saved_old.code_hdr) {
modp->old = purge_state.saved_old;
purge_state.saved_old.code_hdr = 0;
}
erts_rwunlock_old_code(code_ix);
}
if (is_blocking) {
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
}
erts_release_code_write_permission();
finalize_purge_operation(BIF_P, ret == am_true);
if (literals) {
ErtsLiteralAreaRef *ref;
ref = erts_alloc(ERTS_ALC_T_LITERAL_REF,
sizeof(ErtsLiteralAreaRef));
ref->literal_area = literals;
ref->next = NULL;
erts_smp_mtx_lock(&release_literal_areas.mtx);
if (release_literal_areas.last) {
release_literal_areas.last->next = ref;
release_literal_areas.last = ref;
}
else {
release_literal_areas.first = ref;
release_literal_areas.last = ref;
}
erts_smp_mtx_unlock(&release_literal_areas.mtx);
erts_queue_message(erts_literal_area_collector,
0,
erts_alloc_message(0, NULL),
am_copy_literals,
BIF_P->common.id);
}
return ret;
}
default:
BIF_ERROR(BIF_P, BADARG);
}
}
BIF_RETTYPE erts_internal_open_port_2(BIF_ALIST_2)
{
BIF_RETTYPE ret;
Port *port;
Eterm res;
char *str;
int err_type, err_num;
ErtsLinkData *ldp;
ErtsLink *lnk;
port = open_port(BIF_P, BIF_ARG_1, BIF_ARG_2, &err_type, &err_num);
if (!port) {
if (err_type == -3) {
ASSERT(err_num == BADARG || err_num == SYSTEM_LIMIT);
if (err_num == BADARG)
res = am_badarg;
else if (err_num == SYSTEM_LIMIT)
res = am_system_limit;
else
/* this is only here to silence gcc, it should not happen */
BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
} else if (err_type == -2) {
str = erl_errno_id(err_num);
res = erts_atom_put((byte *) str, sys_strlen(str), ERTS_ATOM_ENC_LATIN1, 1);
} else {
res = am_einval;
}
BIF_RET(res);
}
ldp = erts_link_create(ERTS_LNK_TYPE_PORT, BIF_P->common.id, port->common.id);
ASSERT(ldp->a.other.item == port->common.id);
ASSERT(ldp->b.other.item == BIF_P->common.id);
/*
* This link should not already be present, but can potentially
* due to id wrapping...
*/
lnk = erts_link_tree_lookup_insert(&ERTS_P_LINKS(BIF_P), &ldp->a);
erts_link_tree_insert(&ERTS_P_LINKS(port), &ldp->b);
if (port->drv_ptr->flags & ERL_DRV_FLAG_USE_INIT_ACK) {
/* Copied from erl_port_task.c */
port->async_open_port = erts_alloc(ERTS_ALC_T_PRTSD,
sizeof(*port->async_open_port));
erts_make_ref_in_array(port->async_open_port->ref);
port->async_open_port->to = BIF_P->common.id;
/*
* We unconditionaly *must* do a receive on a message
* containing the reference after this...
*/
ERTS_RECV_MARK_SAVE(BIF_P);
ERTS_RECV_MARK_SET(BIF_P);
res = erts_proc_store_ref(BIF_P, port->async_open_port->ref);
} else {
res = port->common.id;
}
if (IS_TRACED_FL(BIF_P, F_TRACE_PROCS))
trace_proc(BIF_P, ERTS_PROC_LOCK_MAIN, BIF_P,
am_link, port->common.id);
ERTS_BIF_PREP_RET(ret, res);
erts_port_release(port);
if (lnk)
erts_link_release(lnk);
return ret;
}
static BIF_RETTYPE
do_port_command(Process *BIF_P, Eterm arg1, Eterm arg2, Eterm arg3,
Uint32 flags)
{
BIF_RETTYPE res;
Port *p;
/* Trace sched out before lock check wait */
if (IS_TRACED_FL(BIF_P, F_TRACE_SCHED_PROCS)) {
trace_virtual_sched(BIF_P, am_out);
}
if (erts_system_profile_flags.runnable_procs && erts_system_profile_flags.exclusive) {
profile_runnable_proc(BIF_P, am_inactive);
}
p = id_or_name2port(BIF_P, arg1);
if (!p) {
if (IS_TRACED_FL(BIF_P, F_TRACE_SCHED_PROCS)) {
trace_virtual_sched(BIF_P, am_in);
}
if (erts_system_profile_flags.runnable_procs && erts_system_profile_flags.exclusive) {
profile_runnable_proc(BIF_P, am_active);
}
BIF_ERROR(BIF_P, BADARG);
}
/* Trace port in, id_or_name2port causes wait */
if (IS_TRACED_FL(p, F_TRACE_SCHED_PORTS)) {
trace_sched_ports_where(p, am_in, am_command);
}
if (erts_system_profile_flags.runnable_ports && !erts_port_is_scheduled(p)) {
profile_runnable_port(p, am_active);
}
ERTS_BIF_PREP_RET(res, am_true);
if ((flags & ERTS_PORT_COMMAND_FLAG_FORCE)
&& !(p->drv_ptr->flags & ERL_DRV_FLAG_SOFT_BUSY)) {
ERTS_BIF_PREP_ERROR(res, BIF_P, EXC_NOTSUP);
}
else if (!(flags & ERTS_PORT_COMMAND_FLAG_FORCE)
&& p->status & ERTS_PORT_SFLG_PORT_BUSY) {
if (flags & ERTS_PORT_COMMAND_FLAG_NOSUSPEND) {
ERTS_BIF_PREP_RET(res, am_false);
}
else {
erts_suspend(BIF_P, ERTS_PROC_LOCK_MAIN, p);
if (erts_system_monitor_flags.busy_port) {
monitor_generic(BIF_P, am_busy_port, p->id);
}
ERTS_BIF_PREP_YIELD3(res, bif_export[BIF_port_command_3], BIF_P,
arg1, arg2, arg3);
}
} else {
int wres;
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
ERTS_SMP_CHK_NO_PROC_LOCKS;
wres = erts_write_to_port(BIF_P->id, p, arg2);
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
if (wres != 0) {
ERTS_BIF_PREP_ERROR(res, BIF_P, BADARG);
}
}
if (IS_TRACED_FL(p, F_TRACE_SCHED_PORTS)) {
trace_sched_ports_where(p, am_out, am_command);
}
if (erts_system_profile_flags.runnable_ports && !erts_port_is_scheduled(p)) {
profile_runnable_port(p, am_inactive);
}
erts_port_release(p);
/* Trace sched in after port release */
if (IS_TRACED_FL(BIF_P, F_TRACE_SCHED_PROCS)) {
trace_virtual_sched(BIF_P, am_in);
}
if (erts_system_profile_flags.runnable_procs && erts_system_profile_flags.exclusive) {
profile_runnable_proc(BIF_P, am_active);
}
if (ERTS_PROC_IS_EXITING(BIF_P)) {
KILL_CATCHES(BIF_P); /* Must exit */
ERTS_BIF_PREP_ERROR(res, BIF_P, EXC_ERROR);
}
return res;
}