C++ size_object函数代码示例

void
erts_deliver_exit_message(Eterm from, Process *to, ErtsProcLocks *to_locksp,
			  Eterm reason, Eterm token)
{
    Eterm mess;
    Eterm save;
    Eterm from_copy;
    Uint sz_reason;
    Uint sz_token;
    Uint sz_from;
    Eterm* hp;
    Eterm temptoken;
    ErlHeapFragment* bp = NULL;

    if (token != NIL
#ifdef USE_VM_PROBES
	&& token != am_have_dt_utag
#endif
	) {

	ASSERT(is_tuple(token));
	sz_reason = size_object(reason);
	sz_token = size_object(token);
	sz_from = size_object(from);
	bp = new_message_buffer(sz_reason + sz_from + sz_token + 4);
	hp = bp->mem;
	mess = copy_struct(reason, sz_reason, &hp, &bp->off_heap);
	from_copy = copy_struct(from, sz_from, &hp, &bp->off_heap);
	save = TUPLE3(hp, am_EXIT, from_copy, mess);
	hp += 4;
	/* the trace token must in this case be updated by the caller */
	seq_trace_output(token, save, SEQ_TRACE_SEND, to->common.id, NULL);
	temptoken = copy_struct(token, sz_token, &hp, &bp->off_heap);
	erts_queue_message(to, to_locksp, bp, save, temptoken);
    } else {
	ErlOffHeap *ohp;
	sz_reason = size_object(reason);
	sz_from = IS_CONST(from) ? 0 : size_object(from);

	hp = erts_alloc_message_heap(sz_reason+sz_from+4,
				     &bp,
				     &ohp,
				     to,
				     to_locksp);

	mess = copy_struct(reason, sz_reason, &hp, ohp);
	from_copy = (IS_CONST(from)
		     ? from
		     : copy_struct(from, sz_from, &hp, ohp));
	save = TUPLE3(hp, am_EXIT, from_copy, mess);
	erts_queue_message(to, to_locksp, bp, save, NIL);
    }
}

BIF_RETTYPE port_set_data_2(BIF_ALIST_2)
{
    Port* prt;
    Eterm portid = BIF_ARG_1;
    Eterm data   = BIF_ARG_2;

    prt = id_or_name2port(BIF_P, portid);
    if (!prt) {
	BIF_ERROR(BIF_P, BADARG);
    }
    if (prt->bp != NULL) {
	free_message_buffer(prt->bp);
	prt->bp = NULL;
    }
    if (IS_CONST(data)) {
	prt->data = data;
    } else {
	Uint size;
	ErlHeapFragment* bp;
	Eterm* hp;

	size = size_object(data);
	prt->bp = bp = new_message_buffer(size);
	hp = bp->mem;
	prt->data = copy_struct(data, size, &hp, &bp->off_heap);
    }
    erts_smp_port_unlock(prt);
    BIF_RET(am_true);
}

ERL_NIF_TERM enif_make_copy(ErlNifEnv* dst_env, ERL_NIF_TERM src_term)
{
    Uint sz;
    Eterm* hp;
    sz = size_object(src_term);
    hp = alloc_heap(dst_env, sz);
    return copy_struct(src_term, sz, &hp, &MSO(dst_env->proc));
}

BIF_RETTYPE
erts_debug_flat_size_1(BIF_ALIST_1)
{
    Process* p = BIF_P;
    Eterm term = BIF_ARG_1;
    Uint size = size_object(term);

    if (IS_USMALL(0, size)) {
	BIF_RET(make_small(size));
    } else {
	Eterm* hp = HAlloc(p, BIG_UINT_HEAP_SIZE);
	BIF_RET(uint_to_big(size, hp));
    }
}

/*
 *  Copy object "obj" to process p.
 */
Eterm
copy_object(Eterm obj, Process* to)
{
    Uint size = size_object(obj);
    Eterm* hp = HAlloc(to, size);
    Eterm res;

    res = copy_struct(obj, size, &hp, &to->off_heap);
#ifdef DEBUG
    if (eq(obj, res) == 0) {
	erl_exit(ERTS_ABORT_EXIT, "copy not equal to source\n");
    }
#endif
    return res;
}

BIF_RETTYPE port_set_data_2(BIF_ALIST_2)
{
    /*
     * This is not a signal. See comment above.
     */
    erts_aint_t data;
    Port* prt;

    prt = data_lookup_port(BIF_P, BIF_ARG_1);
    if (!prt)
        BIF_ERROR(BIF_P, BADARG);

    if (is_immed(BIF_ARG_2)) {
	data = (erts_aint_t) BIF_ARG_2;
	ASSERT((data & 0x3) != 0);
    }
    else {
	ErtsPortDataHeap *pdhp;
	Uint hsize;
	Eterm *hp;

	hsize = size_object(BIF_ARG_2);
	pdhp = erts_alloc(ERTS_ALC_T_PORT_DATA_HEAP,
			  sizeof(ErtsPortDataHeap) + (hsize-1)*sizeof(Eterm));
	hp = &pdhp->heap[0];
	pdhp->off_heap.first = NULL;
	pdhp->off_heap.overhead = 0;
	pdhp->hsize = hsize;
	pdhp->data = copy_struct(BIF_ARG_2, hsize, &hp, &pdhp->off_heap);
	data = (erts_aint_t) pdhp;
	ASSERT((data & 0x3) == 0);
    }

    data = erts_smp_atomic_xchg_wb(&prt->data, data);

    if (data == (erts_aint_t)NULL) {
	/* Port terminated by racing thread */
	data = erts_smp_atomic_xchg_wb(&prt->data, data);
	ASSERT(data != (erts_aint_t)NULL);
	cleanup_old_port_data(data);
	BIF_ERROR(BIF_P, BADARG);
    }
    cleanup_old_port_data(data);
    BIF_RET(am_true);
}

static void
insert_node_referrer(ReferredNode *referred_node, int type, Eterm id)
{
    NodeReferrer *nrp;

    for(nrp = referred_node->referrers; nrp; nrp = nrp->next)
	if(EQ(id, nrp->id))
	    break;

    if(!nrp) {
	nrp = (NodeReferrer *) erts_alloc(ERTS_ALC_T_NC_TMP,
					  sizeof(NodeReferrer));
	nrp->next = referred_node->referrers;
	referred_node->referrers = nrp;
	if(IS_CONST(id))
	    nrp->id = id;
	else {
	    Uint *hp = &nrp->id_heap[0];
	    ASSERT(is_big(id) || is_tuple(id));
	    nrp->id = copy_struct(id, size_object(id), &hp, NULL);
	}
	nrp->heap_ref = 0;
	nrp->link_ref = 0;
	nrp->monitor_ref = 0;
	nrp->ets_ref = 0;
	nrp->bin_ref = 0;
	nrp->timer_ref = 0;
	nrp->system_ref = 0;
    }

    switch (type) {
    case HEAP_REF:	nrp->heap_ref++;	break;
    case LINK_REF:	nrp->link_ref++;	break;
    case ETS_REF:	nrp->ets_ref++;		break;
    case BIN_REF:	nrp->bin_ref++;		break;
    case MONITOR_REF:   nrp->monitor_ref++;     break;
    case TIMER_REF:	nrp->timer_ref++;	break;
    case SYSTEM_REF:	nrp->system_ref++;	break;
    default:		ASSERT(0);
    }
}

static void
insert_dist_referrer(ReferredDist *referred_dist,
		    int type,
		    Eterm id,
		    Uint creation)
{
    DistReferrer *drp;

    for(drp = referred_dist->referrers; drp; drp = drp->next)
	if(id == drp->id && (type == CTRL_REF
			     || creation == drp->creation))
	    break;

    if(!drp) {
	drp = (DistReferrer *) erts_alloc(ERTS_ALC_T_NC_TMP,
					  sizeof(DistReferrer));
	drp->next = referred_dist->referrers;
	referred_dist->referrers = drp;
	if(IS_CONST(id))
	    drp->id = id;
	else {
	    Uint *hp = &drp->id_heap[0];
	    ASSERT(is_tuple(id));
	    drp->id = copy_struct(id, size_object(id), &hp, NULL);
	}
	drp->creation = creation;
	drp->heap_ref = 0;
	drp->node_ref = 0;
	drp->ctrl_ref = 0;
	drp->system_ref = 0;
    }

    switch (type) {
    case NODE_REF:	drp->node_ref++;	break;
    case CTRL_REF:	drp->ctrl_ref++;	break;
    case HEAP_REF:	drp->heap_ref++;	break;
    case SYSTEM_REF:	drp->system_ref++;	break;
    default:		ASSERT(0);
    }
}

/*
 *  Copy object "obj" to process p.
 */
Eterm
copy_object(Eterm obj, Process* to)
{
    Uint size = size_object(obj);
    Eterm* hp = HAlloc(to, size);
    Eterm res;

#ifdef USE_VM_PROBES
    if (DTRACE_ENABLED(copy_object)) {
        DTRACE_CHARBUF(proc_name, 64);

        erts_snprintf(proc_name, sizeof(proc_name), "%T", to->common.id);
        DTRACE2(copy_object, proc_name, size);
    }
#endif
    res = copy_struct(obj, size, &hp, &to->off_heap);
#ifdef DEBUG
    if (eq(obj, res) == 0) {
	erl_exit(ERTS_ABORT_EXIT, "copy not equal to source\n");
    }
#endif
    return res;
}

void
erts_queue_dist_message(Process *rcvr,
			ErtsProcLocks rcvr_locks,
			ErtsDistExternal *dist_ext,
			Eterm token,
                        Eterm from)
{
    ErtsMessage* mp;
#ifdef USE_VM_PROBES
    Sint tok_label = 0;
    Sint tok_lastcnt = 0;
    Sint tok_serial = 0;
#endif
    erts_aint_t state;

    ERTS_LC_ASSERT(rcvr_locks == erts_proc_lc_my_proc_locks(rcvr));

    mp = erts_alloc_message(0, NULL);
    mp->data.dist_ext = dist_ext;

    ERL_MESSAGE_TERM(mp) = THE_NON_VALUE;
#ifdef USE_VM_PROBES
    ERL_MESSAGE_DT_UTAG(mp) = NIL;
    if (token == am_have_dt_utag)
	ERL_MESSAGE_TOKEN(mp) = NIL;
    else
#endif
	ERL_MESSAGE_TOKEN(mp) = token;

    if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ)) {
	if (erts_proc_trylock(rcvr, ERTS_PROC_LOCK_MSGQ) == EBUSY) {
	    ErtsProcLocks need_locks = ERTS_PROC_LOCK_MSGQ;
            ErtsProcLocks unlocks =
                rcvr_locks & ERTS_PROC_LOCKS_HIGHER_THAN(ERTS_PROC_LOCK_MSGQ);
	    if (unlocks) {
		erts_proc_unlock(rcvr, unlocks);
		need_locks |= unlocks;
	    }
	    erts_proc_lock(rcvr, need_locks);
	}
    }

    state = erts_atomic32_read_acqb(&rcvr->state);
    if (state & (ERTS_PSFLG_PENDING_EXIT|ERTS_PSFLG_EXITING)) {
	if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ))
	    erts_proc_unlock(rcvr, ERTS_PROC_LOCK_MSGQ);
	/* Drop message if receiver is exiting or has a pending exit ... */
	erts_cleanup_messages(mp);
    }
    else
    if (IS_TRACED_FL(rcvr, F_TRACE_RECEIVE)) {
        if (from == am_Empty)
            from = dist_ext->dep->sysname;

	/* Ahh... need to decode it in order to trace it... */
	if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ))
	    erts_proc_unlock(rcvr, ERTS_PROC_LOCK_MSGQ);
	if (!erts_decode_dist_message(rcvr, rcvr_locks, mp, 0))
	    erts_free_message(mp);
	else {
	    Eterm msg = ERL_MESSAGE_TERM(mp);
	    token = ERL_MESSAGE_TOKEN(mp);
#ifdef USE_VM_PROBES
	    if (DTRACE_ENABLED(message_queued)) {
		DTRACE_CHARBUF(receiver_name, DTRACE_TERM_BUF_SIZE);

		dtrace_proc_str(rcvr, receiver_name);
                if (have_seqtrace(token)) {
		    tok_label = signed_val(SEQ_TRACE_T_LABEL(token));
		    tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(token));
		    tok_serial = signed_val(SEQ_TRACE_T_SERIAL(token));
		}
		DTRACE6(message_queued,
			receiver_name, size_object(msg), rcvr->msg.len,
			tok_label, tok_lastcnt, tok_serial);
	    }
#endif
	    erts_queue_message(rcvr, rcvr_locks, mp, msg, from);
	}
    }
    else {
	/* Enqueue message on external format */

#ifdef USE_VM_PROBES
        if (DTRACE_ENABLED(message_queued)) {
            DTRACE_CHARBUF(receiver_name, DTRACE_TERM_BUF_SIZE);

            dtrace_proc_str(rcvr, receiver_name);
            if (have_seqtrace(token)) {
                tok_label = signed_val(SEQ_TRACE_T_LABEL(token));
                tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(token));
                tok_serial = signed_val(SEQ_TRACE_T_SERIAL(token));
            }
            /*
             * 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,
                    tok_label, tok_lastcnt, tok_serial);
        }
//.........这里部分代码省略.........

/* Add messages last in message queue */
static Sint
queue_messages(Process* receiver,
               erts_aint32_t *receiver_state,
               ErtsProcLocks receiver_locks,
               ErtsMessage* first,
               ErtsMessage** last,
               Uint len,
               Eterm from)
{
    ErtsTracingEvent* te;
    Sint res;
    int locked_msgq = 0;
    erts_aint32_t state;

    ASSERT(is_value(ERL_MESSAGE_TERM(first)));
    ASSERT(ERL_MESSAGE_TOKEN(first) == am_undefined ||
           ERL_MESSAGE_TOKEN(first) == NIL ||
           is_tuple(ERL_MESSAGE_TOKEN(first)));

#ifdef ERTS_ENABLE_LOCK_CHECK
    ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(receiver) < ERTS_PROC_LOCK_MSGQ ||
                       receiver_locks == erts_proc_lc_my_proc_locks(receiver));
#endif

    if (!(receiver_locks & ERTS_PROC_LOCK_MSGQ)) {
	if (erts_proc_trylock(receiver, ERTS_PROC_LOCK_MSGQ) == EBUSY) {
            ErtsProcLocks need_locks;

	    if (receiver_state)
		state = *receiver_state;
	    else
		state = erts_atomic32_read_nob(&receiver->state);
	    if (state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT))
		goto exiting;

            need_locks = receiver_locks & ERTS_PROC_LOCKS_HIGHER_THAN(ERTS_PROC_LOCK_MSGQ);
	    if (need_locks) {
		erts_proc_unlock(receiver, need_locks);
	    }
            need_locks |= ERTS_PROC_LOCK_MSGQ;
	    erts_proc_lock(receiver, need_locks);
	}
	locked_msgq = 1;
    }


    state = erts_atomic32_read_nob(&receiver->state);

    if (state & (ERTS_PSFLG_PENDING_EXIT|ERTS_PSFLG_EXITING)) {
    exiting:
	/* Drop message if receiver is exiting or has a pending exit... */
	if (locked_msgq)
	    erts_proc_unlock(receiver, ERTS_PROC_LOCK_MSGQ);
	erts_cleanup_messages(first);
	return 0;
    }

    res = receiver->msg.len;
    if (receiver_locks & ERTS_PROC_LOCK_MAIN) {
	/*
	 * We move 'in queue' to 'private queue' and place
	 * message at the end of 'private queue' in order
	 * to ensure that the 'in queue' doesn't contain
	 * references into the heap. By ensuring this,
	 * we don't need to include the 'in queue' in
	 * the root set when garbage collecting.
	 */
	res += receiver->msg_inq.len;
	ERTS_MSGQ_MV_INQ2PRIVQ(receiver);
        LINK_MESSAGE_PRIVQ(receiver, first, last, len);
    }
    else
    {
	LINK_MESSAGE(receiver, first, last, len);
    }

    if (IS_TRACED_FL(receiver, F_TRACE_RECEIVE)
        && (te = &erts_receive_tracing[erts_active_bp_ix()],
            te->on)) {

        ErtsMessage *msg = first;

#ifdef USE_VM_PROBES
        if (DTRACE_ENABLED(message_queued)) {
            DTRACE_CHARBUF(receiver_name, DTRACE_TERM_BUF_SIZE);
            Sint tok_label = 0;
            Sint tok_lastcnt = 0;
            Sint tok_serial = 0;
            Eterm seq_trace_token = ERL_MESSAGE_TOKEN(msg);

            dtrace_proc_str(receiver, receiver_name);
            if (seq_trace_token != NIL && is_tuple(seq_trace_token)) {
                tok_label = signed_val(SEQ_TRACE_T_LABEL(seq_trace_token));
                tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(seq_trace_token));
                tok_serial = signed_val(SEQ_TRACE_T_SERIAL(seq_trace_token));
            }
            DTRACE6(message_queued,
                    receiver_name, size_object(ERL_MESSAGE_TERM(msg)),
                    receiver->msg.len,
//.........这里部分代码省略.........

/* Add a message last in message queue */
void
erts_queue_message(Process* receiver,
                   ErtsProcLocks *receiver_locks,
                   ErlHeapFragment* bp,
                   Eterm message,
                   Eterm seq_trace_token
#ifdef USE_VM_PROBES
                   , Eterm dt_utag
#endif
                  )
{
    ErlMessage* mp;
#ifdef ERTS_SMP
    ErtsProcLocks need_locks;
#else
    ASSERT(bp != NULL || receiver->mbuf == NULL);
#endif

    ERTS_SMP_LC_ASSERT(*receiver_locks == erts_proc_lc_my_proc_locks(receiver));

    mp = message_alloc();

#ifdef ERTS_SMP
    need_locks = ~(*receiver_locks) & (ERTS_PROC_LOCK_MSGQ
                                       | ERTS_PROC_LOCK_STATUS);
    if (need_locks) {
        *receiver_locks |= need_locks;
        if (erts_smp_proc_trylock(receiver, need_locks) == EBUSY) {
            if (need_locks == ERTS_PROC_LOCK_MSGQ) {
                erts_smp_proc_unlock(receiver, ERTS_PROC_LOCK_STATUS);
                need_locks = (ERTS_PROC_LOCK_MSGQ
                              | ERTS_PROC_LOCK_STATUS);
            }
            erts_smp_proc_lock(receiver, need_locks);
        }
    }

    if (receiver->is_exiting || ERTS_PROC_PENDING_EXIT(receiver)) {
        /* Drop message if receiver is exiting or has a pending
         * exit ...
         */
        if (bp)
            free_message_buffer(bp);
        message_free(mp);
        return;
    }
#endif

    ERL_MESSAGE_TERM(mp) = message;
    ERL_MESSAGE_TOKEN(mp) = seq_trace_token;
#ifdef USE_VM_PROBES
    ERL_MESSAGE_DT_UTAG(mp) = dt_utag;
#endif
    mp->next = NULL;
    mp->data.heap_frag = bp;

#ifdef ERTS_SMP
    if (*receiver_locks & ERTS_PROC_LOCK_MAIN) {
        /*
         * We move 'in queue' to 'private queue' and place
         * message at the end of 'private queue' in order
         * to ensure that the 'in queue' doesn't contain
         * references into the heap. By ensuring this,
         * we don't need to include the 'in queue' in
         * the root set when garbage collecting.
         */
        ERTS_SMP_MSGQ_MV_INQ2PRIVQ(receiver);
        LINK_MESSAGE_PRIVQ(receiver, mp);
    }
    else {
        LINK_MESSAGE(receiver, mp);
    }
#else
    LINK_MESSAGE(receiver, mp);
#endif

#ifdef USE_VM_PROBES
    if (DTRACE_ENABLED(message_queued)) {
        DTRACE_CHARBUF(receiver_name, DTRACE_TERM_BUF_SIZE);
        Sint tok_label = 0;
        Sint tok_lastcnt = 0;
        Sint tok_serial = 0;

        dtrace_proc_str(receiver, receiver_name);
        if (seq_trace_token != NIL && is_tuple(seq_trace_token)) {
            tok_label = signed_val(SEQ_TRACE_T_LABEL(seq_trace_token));
            tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(seq_trace_token));
            tok_serial = signed_val(SEQ_TRACE_T_SERIAL(seq_trace_token));
        }
        DTRACE6(message_queued,
                receiver_name, size_object(message), receiver->msg.len,
                tok_label, tok_lastcnt, tok_serial);
    }
#endif
    notify_new_message(receiver);

    if (IS_TRACED_FL(receiver, F_TRACE_RECEIVE)) {
        trace_receive(receiver, message);
    }
//.........这里部分代码省略.........

Uint
erts_prep_msgq_for_inspection(Process *c_p, Process *rp,
			      ErtsProcLocks rp_locks, ErtsMessageInfo *mip)
{
    Uint tot_heap_size;
    ErtsMessage* mp;
    Sint i;
    int self_on_heap;
    
    /*
     * Prepare the message queue for inspection
     * by process_info().
     *
     *
     * - Decode all messages on external format
     * - Remove all corrupt dist messages from queue
     * - Save pointer to, and heap size need of each
     *   message in the mip array.
     * - Return total heap size need for all messages
     *   that needs to be copied.
     *
     * If ERTS_INSPECT_MSGQ_KEEP_OH_MSGS == 0:
     * - In case off heap messages is disabled and
     *   we are inspecting our own queue, move all
     *   off heap data into the heap.
     */

    self_on_heap = c_p == rp && !(c_p->flags & F_OFF_HEAP_MSGQ);

    tot_heap_size = 0;
    i = 0;
    mp = rp->msg.first;
    while (mp) {
	Eterm msg = ERL_MESSAGE_TERM(mp);

	mip[i].size = 0;

	if (is_non_value(msg)) {
	    /* Dist message on external format; decode it... */
	    if (mp->data.attached)
		erts_decode_dist_message(rp, rp_locks, mp,
					 ERTS_INSPECT_MSGQ_KEEP_OH_MSGS);

	    msg = ERL_MESSAGE_TERM(mp);

	    if (is_non_value(msg)) {
		ErtsMessage **mpp;
		ErtsMessage *bad_mp = mp;
		/*
		 * Bad distribution message; remove
		 * it from the queue...
		 */
		ASSERT(!mp->data.attached);

		mpp = i == 0 ? &rp->msg.first : &mip[i-1].msgp->next;

		ASSERT(*mpp == bad_mp);

		erts_msgq_update_internal_pointers(&rp->msg, mpp, &bad_mp->next);

		mp = mp->next;
		*mpp = mp;
		rp->msg.len--;
		bad_mp->next = NULL;
		erts_cleanup_messages(bad_mp);
		continue;
	    }
	}

	ASSERT(is_value(msg));

#if ERTS_INSPECT_MSGQ_KEEP_OH_MSGS
	if (is_not_immed(msg) && (!self_on_heap || mp->data.attached)) {
	    Uint sz = size_object(msg);
	    mip[i].size = sz;
	    tot_heap_size += sz;
	}
#else
	if (self_on_heap) {
	    if (mp->data.attached) {
		ErtsMessage *tmp = NULL;
		if (mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
		    erts_link_mbuf_to_proc(rp, mp->data.heap_frag);
		    mp->data.attached = NULL;
		}
		else {
		    /*
		     * Need to replace the message reference since
		     * we will get references to the message data
		     * from the heap...
		     */
		    ErtsMessage **mpp;
		    tmp = erts_alloc_message(0, NULL);
		    sys_memcpy((void *) tmp->m, (void *) mp->m,
			       sizeof(Eterm)*ERL_MESSAGE_REF_ARRAY_SZ); 
		    mpp = i == 0 ? &rp->msg.first : &mip[i-1].msgp->next;
		    erts_msgq_replace_msg_ref(&rp->msg, tmp, mpp);
		    erts_save_message_in_proc(rp, mp);
		    mp = tmp;
		}
//.........这里部分代码省略.........

void
erts_queue_dist_message(Process *rcvr,
			ErtsProcLocks rcvr_locks,
			ErtsDistExternal *dist_ext,
                        ErlHeapFragment *hfrag,
			Eterm token,
                        Eterm from)
{
    ErtsMessage* mp;
    erts_aint_t state;

    ERTS_LC_ASSERT(rcvr_locks == erts_proc_lc_my_proc_locks(rcvr));

    if (hfrag) {
        /* Fragmented message, allocate a message reference */
        mp = erts_alloc_message(0, NULL);
        mp->data.heap_frag = hfrag;
    } else {
        /* Un-fragmented message, allocate space for
           token and dist_ext in message. */
        Uint dist_ext_sz = erts_dist_ext_size(dist_ext) / sizeof(Eterm);
        Uint token_sz = size_object(token);
        Uint sz = token_sz + dist_ext_sz;
        Eterm *hp;

        mp = erts_alloc_message(sz, &hp);
        mp->data.heap_frag = &mp->hfrag;
        mp->hfrag.used_size = token_sz;

        erts_make_dist_ext_copy(dist_ext, erts_get_dist_ext(mp->data.heap_frag));

        token = copy_struct(token, token_sz, &hp, &mp->data.heap_frag->off_heap);
    }

    ERL_MESSAGE_FROM(mp) = dist_ext->dep->sysname;
    ERL_MESSAGE_TERM(mp) = THE_NON_VALUE;
#ifdef USE_VM_PROBES
    ERL_MESSAGE_DT_UTAG(mp) = NIL;
    if (token == am_have_dt_utag)
	ERL_MESSAGE_TOKEN(mp) = NIL;
    else
#endif
	ERL_MESSAGE_TOKEN(mp) = token;

    if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ)) {
	if (erts_proc_trylock(rcvr, ERTS_PROC_LOCK_MSGQ) == EBUSY) {
	    ErtsProcLocks need_locks = ERTS_PROC_LOCK_MSGQ;
            ErtsProcLocks unlocks =
                rcvr_locks & ERTS_PROC_LOCKS_HIGHER_THAN(ERTS_PROC_LOCK_MSGQ);
	    if (unlocks) {
		erts_proc_unlock(rcvr, unlocks);
		need_locks |= unlocks;
	    }
	    erts_proc_lock(rcvr, need_locks);
	}
    }


    state = erts_atomic32_read_acqb(&rcvr->state);
    if (state & ERTS_PSFLG_EXITING) {
	if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ))
	    erts_proc_unlock(rcvr, ERTS_PROC_LOCK_MSGQ);
	/* Drop message if receiver is exiting or has a pending exit ... */
	erts_cleanup_messages(mp);
    }
    else {
	LINK_MESSAGE(rcvr, mp);

        if (rcvr_locks & ERTS_PROC_LOCK_MAIN)
            erts_proc_sig_fetch(rcvr);

	if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ))
	    erts_proc_unlock(rcvr, ERTS_PROC_LOCK_MSGQ);

	erts_proc_notify_new_message(rcvr, rcvr_locks);
    }
}

static Eterm
reference_table_term(Uint **hpp, Uint *szp)
{
#undef  MK_2TUP
#undef  MK_3TUP
#undef  MK_CONS
#undef  MK_UINT
#define MK_2TUP(E1, E2)		erts_bld_tuple(hpp, szp, 2, (E1), (E2))
#define MK_3TUP(E1, E2, E3)	erts_bld_tuple(hpp, szp, 3, (E1), (E2), (E3))
#define MK_CONS(CAR, CDR)	erts_bld_cons(hpp, szp, (CAR), (CDR))
#define MK_UINT(UI)		erts_bld_uint(hpp, szp, (UI))
    int i;
    Eterm tup;
    Eterm tup2;
    Eterm nl = NIL;
    Eterm dl = NIL;
    Eterm nrid;

    for(i = 0; i < no_referred_nodes; i++) {
	NodeReferrer *nrp;
	Eterm nril = NIL;

	for(nrp = referred_nodes[i].referrers; nrp; nrp = nrp->next) {
	    Eterm nrl = NIL;
	    /* NodeReferenceList = [{ReferenceType,References}] */
	    if(nrp->heap_ref) {
		tup = MK_2TUP(AM_heap, MK_UINT(nrp->heap_ref));
		nrl = MK_CONS(tup, nrl);
	    }
	    if(nrp->link_ref) {
		tup = MK_2TUP(AM_link, MK_UINT(nrp->link_ref));
		nrl = MK_CONS(tup, nrl);
	    }
	    if(nrp->monitor_ref) {
		tup = MK_2TUP(AM_monitor, MK_UINT(nrp->monitor_ref));
		nrl = MK_CONS(tup, nrl);
	    }
	    if(nrp->ets_ref) {
		tup = MK_2TUP(AM_ets, MK_UINT(nrp->ets_ref));
		nrl = MK_CONS(tup, nrl);
	    }
	    if(nrp->bin_ref) {
		tup = MK_2TUP(AM_binary, MK_UINT(nrp->bin_ref));
		nrl = MK_CONS(tup, nrl);
	    }
	    if(nrp->timer_ref) {
		tup = MK_2TUP(AM_timer, MK_UINT(nrp->timer_ref));
		nrl = MK_CONS(tup, nrl);
	    }
	    if(nrp->system_ref) {
		tup = MK_2TUP(AM_system, MK_UINT(nrp->system_ref));
		nrl = MK_CONS(tup, nrl);
	    }

	    nrid = nrp->id;
	    if (!IS_CONST(nrp->id)) {

		Uint nrid_sz = size_object(nrp->id);
		if (szp)
		    *szp += nrid_sz;
		if (hpp)
		    nrid = copy_struct(nrp->id, nrid_sz, hpp, NULL);
	    }

	    if (is_internal_pid(nrid) || nrid == am_error_logger) {
		ASSERT(!nrp->ets_ref && !nrp->bin_ref && !nrp->system_ref);
		tup = MK_2TUP(AM_process, nrid);
	    }
	    else if (is_tuple(nrid)) {
		Eterm *t;
		ASSERT(!nrp->ets_ref && !nrp->bin_ref);
		t = tuple_val(nrid);
		ASSERT(2 == arityval(t[0]));
		tup = MK_2TUP(t[1], t[2]);
	    }
	    else if(is_internal_port(nrid)) {
		ASSERT(!nrp->heap_ref && !nrp->ets_ref && !nrp->bin_ref
		       && !nrp->timer_ref && !nrp->system_ref);
		tup = MK_2TUP(AM_port, nrid);
	    }
	    else if(nrp->ets_ref) {
		ASSERT(!nrp->heap_ref && !nrp->link_ref && 
		       !nrp->monitor_ref && !nrp->bin_ref
		       && !nrp->timer_ref && !nrp->system_ref);
		tup = MK_2TUP(AM_ets, nrid);
	    }
	    else if(nrp->bin_ref) {
		ASSERT(is_small(nrid) || is_big(nrid));
		ASSERT(!nrp->heap_ref && !nrp->ets_ref && !nrp->link_ref && 
		       !nrp->monitor_ref && !nrp->timer_ref
		       && !nrp->system_ref);
		tup = MK_2TUP(AM_match_spec, nrid);
	    }
	    else  {
		ASSERT(!nrp->heap_ref && !nrp->ets_ref && !nrp->bin_ref);
		ASSERT(is_atom(nrid));
		tup = MK_2TUP(AM_dist, nrid);
	    }
	    tup = MK_2TUP(tup, nrl);
	    /* NodeReferenceIdList = [{{ReferrerType, ID}, NodeReferenceList}] */
//.........这里部分代码省略.........