The R13B03 release.OTP_R13B03

1 files changed, 1660 insertions, 0 deletions

diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c
new file mode 100644
index 0000000000..42b28d987c
--- /dev/null
+++ b/erts/emulator/beam/erl_node_tables.c
@@ -0,0 +1,1660 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 2001-2009. 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
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "global.h"
+#include "erl_node_tables.h"
+#include "dist.h"
+#include "big.h"
+#include "error.h"
+
+Hash erts_dist_table;
+Hash erts_node_table;
+erts_smp_rwmtx_t erts_dist_table_rwmtx;
+erts_smp_rwmtx_t erts_node_table_rwmtx;
+
+DistEntry *erts_hidden_dist_entries;
+DistEntry *erts_visible_dist_entries;
+DistEntry *erts_not_connected_dist_entries;
+Sint erts_no_of_hidden_dist_entries;
+Sint erts_no_of_visible_dist_entries;
+Sint erts_no_of_not_connected_dist_entries;
+
+DistEntry *erts_this_dist_entry;
+ErlNode *erts_this_node;
+
+static Uint node_entries;
+static Uint dist_entries;
+
+static int references_atoms_need_init = 1;
+
+/* -- The distribution table ---------------------------------------------- */
+
+#ifdef DEBUG
+static int
+is_in_de_list(DistEntry *dep, DistEntry *dep_list)
+{
+    DistEntry *tdep;
+    for(tdep = dep_list; tdep; tdep = tdep->next)
+	if(tdep == dep)
+	    return 1;
+    return 0;
+}
+#endif
+
+static HashValue
+dist_table_hash(void *dep)
+{
+    return atom_tab(atom_val(((DistEntry *) dep)->sysname))->slot.bucket.hvalue;
+}
+
+static int
+dist_table_cmp(void *dep1, void *dep2)
+{
+    return (((DistEntry *) dep1)->sysname == ((DistEntry *) dep2)->sysname
+	    ? 0 : 1);
+}
+
+static void*
+dist_table_alloc(void *dep_tmpl)
+{
+    Eterm chnl_nr;
+    Eterm sysname;
+    DistEntry *dep;
+
+    if(((DistEntry *) dep_tmpl) == erts_this_dist_entry)
+	return dep_tmpl;
+
+    sysname = ((DistEntry *) dep_tmpl)->sysname;
+    chnl_nr = make_small((Uint) atom_val(sysname));
+    dep = (DistEntry *) erts_alloc(ERTS_ALC_T_DIST_ENTRY, sizeof(DistEntry));
+
+    dist_entries++;
+
+    dep->prev				= NULL;
+    erts_refc_init(&dep->refc, -1);
+    erts_smp_rwmtx_init_x(&dep->rwmtx, "dist_entry", chnl_nr);
+    dep->sysname			= sysname;
+    dep->cid				= NIL;
+    dep->connection_id			= 0;
+    dep->status				= 0;
+    dep->flags				= 0;
+    dep->version			= 0;
+
+    erts_smp_mtx_init_x(&dep->lnk_mtx, "dist_entry_links", chnl_nr);
+    dep->node_links			= NULL;
+    dep->nlinks				= NULL;
+    dep->monitors			= NULL;
+
+    erts_smp_spinlock_init_x(&dep->qlock, "dist_entry_out_queue", chnl_nr);
+    dep->qflgs				= 0;
+    dep->qsize				= 0;
+    dep->out_queue.first		= NULL;
+    dep->out_queue.last			= NULL;
+    dep->suspended.first		= NULL;
+    dep->suspended.last			= NULL;
+
+    dep->finalized_out_queue.first	= NULL;
+    dep->finalized_out_queue.last	= NULL;
+
+    erts_smp_atomic_init(&dep->dist_cmd_scheduled, 0);
+    erts_port_task_handle_init(&dep->dist_cmd);
+    dep->send				= NULL;
+    dep->cache				= NULL;
+
+    /* Link in */
+
+    /* All new dist entries are "not connected" */
+    dep->next = erts_not_connected_dist_entries;
+    if(erts_not_connected_dist_entries) {
+	ASSERT(erts_not_connected_dist_entries->prev == NULL);
+	erts_not_connected_dist_entries->prev = dep;
+    }
+    erts_not_connected_dist_entries = dep;
+    erts_no_of_not_connected_dist_entries++;
+
+    return (void *) dep;
+}
+
+static void
+dist_table_free(void *vdep)
+{
+    DistEntry *dep = (DistEntry *) vdep;
+
+    if(dep == erts_this_dist_entry)
+	return;
+
+    ASSERT(is_nil(dep->cid));
+    ASSERT(dep->nlinks == NULL);
+    ASSERT(dep->node_links == NULL);
+    ASSERT(dep->monitors == NULL);
+
+    /* Link out */
+
+    /* All dist entries about to be removed are "not connected" */
+
+    if(dep->prev) {
+	ASSERT(is_in_de_list(dep, erts_not_connected_dist_entries));
+	dep->prev->next = dep->next;
+    }
+    else {
+	ASSERT(erts_not_connected_dist_entries == dep);
+	erts_not_connected_dist_entries = dep->next;
+    }
+
+    if(dep->next)
+	dep->next->prev = dep->prev;
+
+    ASSERT(erts_no_of_not_connected_dist_entries > 0);
+    erts_no_of_not_connected_dist_entries--;
+
+    ASSERT(!dep->cache);
+    erts_smp_rwmtx_destroy(&dep->rwmtx);
+    erts_smp_mtx_destroy(&dep->lnk_mtx);
+    erts_smp_spinlock_destroy(&dep->qlock);
+
+#ifdef DEBUG
+    sys_memset(vdep, 0x77, sizeof(DistEntry));
+#endif
+    erts_free(ERTS_ALC_T_DIST_ENTRY, (void *) dep);
+
+    ASSERT(dist_entries > 1);
+    dist_entries--;
+}
+
+
+void
+erts_dist_table_info(int to, void *to_arg)
+{
+    int lock = !ERTS_IS_CRASH_DUMPING;
+    if (lock)
+	erts_smp_rwmtx_rlock(&erts_dist_table_rwmtx);
+    hash_info(to, to_arg, &erts_dist_table);
+    if (lock)
+	erts_smp_rwmtx_runlock(&erts_dist_table_rwmtx);
+}
+
+DistEntry *
+erts_channel_no_to_dist_entry(Uint cno)
+{
+/*
+ * For this node (and previous incarnations of this node),
+ * ERST_INTERNAL_CHANNEL_NO (will always be 0 I guess) is used as
+ * channel no. For other nodes, the atom index of the atom corresponding
+ * to the node name is used as channel no.
+ */
+    if(cno == ERST_INTERNAL_CHANNEL_NO) {
+	erts_refc_inc(&erts_this_dist_entry->refc, 2);
+	return erts_this_dist_entry;
+    }
+
+    if((cno > MAX_ATOM_INDEX)
+       || (cno >= atom_table_size())
+       ||  (atom_tab(cno) == NULL))
+	return NULL;
+        
+    /* cno is a valid atom index; find corresponding dist entry (if there
+       is one) */
+    return erts_find_dist_entry(make_atom(cno));
+}
+
+
+DistEntry *
+erts_sysname_to_connected_dist_entry(Eterm sysname)
+{
+    DistEntry de;
+    DistEntry *res_dep;
+    de.sysname = sysname;
+  
+    if(erts_this_dist_entry->sysname == sysname) {
+	erts_refc_inc(&erts_this_dist_entry->refc, 2);
+	return erts_this_dist_entry;
+    }
+
+    erts_smp_rwmtx_rlock(&erts_dist_table_rwmtx);
+    res_dep = (DistEntry *) hash_get(&erts_dist_table, (void *) &de);
+    if (res_dep) {
+	long refc = erts_refc_inctest(&res_dep->refc, 1);
+	if (refc < 2) /* Pending delete */
+	    erts_refc_inc(&res_dep->refc, 1);
+    }
+    erts_smp_rwmtx_runlock(&erts_dist_table_rwmtx);
+    if (res_dep) {
+	int deref;
+	erts_smp_rwmtx_rlock(&res_dep->rwmtx);
+	deref = is_nil(res_dep->cid);
+	erts_smp_rwmtx_runlock(&res_dep->rwmtx);
+	if (deref) {
+	    erts_deref_dist_entry(res_dep);
+	    res_dep = NULL;
+	}
+    }
+    return res_dep;
+}
+
+DistEntry *erts_find_or_insert_dist_entry(Eterm sysname)
+{
+    DistEntry *res;
+    DistEntry de;
+    long refc;
+    res = erts_find_dist_entry(sysname);
+    if (res)
+	return res;
+    de.sysname = sysname;
+    erts_smp_rwmtx_rwlock(&erts_dist_table_rwmtx);
+    res = hash_put(&erts_dist_table, (void *) &de);
+    refc = erts_refc_inctest(&res->refc, 0);
+    if (refc < 2) /* New or pending delete */
+	erts_refc_inc(&res->refc, 1);
+    erts_smp_rwmtx_rwunlock(&erts_dist_table_rwmtx);
+    return res;
+}
+
+DistEntry *erts_find_dist_entry(Eterm sysname)
+{
+    DistEntry *res;
+    DistEntry de;
+    de.sysname = sysname;
+    erts_smp_rwmtx_rlock(&erts_dist_table_rwmtx);
+    res = hash_get(&erts_dist_table, (void *) &de);
+    if (res) {
+	long refc = erts_refc_inctest(&res->refc, 1);
+	if (refc < 2) /* Pending delete */
+	    erts_refc_inc(&res->refc, 1);
+    }
+    erts_smp_rwmtx_runlock(&erts_dist_table_rwmtx);
+    return res;
+}
+
+void erts_delete_dist_entry(DistEntry *dep)
+{
+    ASSERT(dep != erts_this_dist_entry);
+    if(dep != erts_this_dist_entry) {
+	erts_smp_rwmtx_rwlock(&erts_dist_table_rwmtx);
+	/*
+	 * Another thread might have looked up this dist entry after
+	 * we decided to delete it (refc became zero). If so, the other
+	 * thread incremented refc twice. Once for the new reference
+	 * and once for this thread. Therefore, delete dist entry if
+	 * refc is 0 or -1 after a decrement.
+	 */
+	if (erts_refc_dectest(&dep->refc, -1) <= 0)
+	    (void) hash_erase(&erts_dist_table, (void *) dep);
+	erts_smp_rwmtx_rwunlock(&erts_dist_table_rwmtx);
+    }
+}
+
+Uint
+erts_dist_table_size(void)
+{
+    Uint res;
+#ifdef DEBUG
+    HashInfo hi;
+    DistEntry *dep;
+    int i;
+#endif
+    int lock = !ERTS_IS_CRASH_DUMPING;
+
+    if (lock)
+	erts_smp_rwmtx_rlock(&erts_dist_table_rwmtx);
+#ifdef DEBUG
+    hash_get_info(&hi, &erts_dist_table);
+    ASSERT(dist_entries == hi.objs);
+
+    i = 0;
+    for(dep = erts_visible_dist_entries; dep; dep = dep->next)
+	i++;
+    ASSERT(i == erts_no_of_visible_dist_entries);
+    i = 0;
+    for(dep = erts_hidden_dist_entries; dep; dep = dep->next)
+	i++;
+    ASSERT(i == erts_no_of_hidden_dist_entries);
+    i = 0;
+    for(dep = erts_not_connected_dist_entries; dep; dep = dep->next)
+	i++;
+    ASSERT(i == erts_no_of_not_connected_dist_entries);
+
+    ASSERT(dist_entries == (erts_no_of_visible_dist_entries
+			    + erts_no_of_hidden_dist_entries
+			    + erts_no_of_not_connected_dist_entries
+			    + 1 /* erts_this_dist_entry */));
+#endif
+
+    res = (hash_table_sz(&erts_dist_table)
+	   + dist_entries*sizeof(DistEntry)
+	   + erts_dist_cache_size());
+    if (lock)
+	erts_smp_rwmtx_runlock(&erts_dist_table_rwmtx);
+    return res;
+}
+
+void
+erts_set_dist_entry_not_connected(DistEntry *dep)
+{
+    ERTS_SMP_LC_ASSERT(erts_lc_is_de_rwlocked(dep));
+    erts_smp_rwmtx_rwlock(&erts_dist_table_rwmtx);
+
+    ASSERT(dep != erts_this_dist_entry);
+    ASSERT(is_internal_port(dep->cid));
+
+    if(dep->flags & DFLAG_PUBLISHED) {
+	if(dep->prev) {
+	    ASSERT(is_in_de_list(dep, erts_visible_dist_entries));
+	    dep->prev->next = dep->next;
+	}
+	else {
+	    ASSERT(erts_visible_dist_entries == dep);
+	    erts_visible_dist_entries = dep->next;
+	}
+
+	ASSERT(erts_no_of_visible_dist_entries > 0);
+	erts_no_of_visible_dist_entries--;
+    }
+    else {
+	if(dep->prev) {
+	    ASSERT(is_in_de_list(dep, erts_hidden_dist_entries));
+	    dep->prev->next = dep->next;
+	}
+	else {
+	    ASSERT(erts_hidden_dist_entries == dep);
+	    erts_hidden_dist_entries = dep->next;
+	}
+
+	ASSERT(erts_no_of_hidden_dist_entries > 0);
+	erts_no_of_hidden_dist_entries--;
+    }
+
+    if(dep->next)
+	dep->next->prev = dep->prev;
+
+    dep->status &= ~ERTS_DE_SFLG_CONNECTED;
+    dep->flags = 0;
+    dep->prev = NULL;
+    dep->cid = NIL;
+
+    dep->next = erts_not_connected_dist_entries;
+    if(erts_not_connected_dist_entries) {
+	ASSERT(erts_not_connected_dist_entries->prev == NULL);
+	erts_not_connected_dist_entries->prev = dep;
+    }
+    erts_not_connected_dist_entries = dep;
+    erts_no_of_not_connected_dist_entries++;
+    erts_smp_rwmtx_rwunlock(&erts_dist_table_rwmtx);
+}
+
+void
+erts_set_dist_entry_connected(DistEntry *dep, Eterm cid, Uint flags)
+{
+    ERTS_SMP_LC_ASSERT(erts_lc_is_de_rwlocked(dep));
+    erts_smp_rwmtx_rwlock(&erts_dist_table_rwmtx);
+
+    ASSERT(dep != erts_this_dist_entry);
+    ASSERT(is_nil(dep->cid));
+    ASSERT(is_internal_port(cid));
+
+    if(dep->prev) {
+	ASSERT(is_in_de_list(dep, erts_not_connected_dist_entries));
+	dep->prev->next = dep->next;
+    }
+    else {
+	ASSERT(erts_not_connected_dist_entries == dep);
+	erts_not_connected_dist_entries = dep->next;
+    }
+
+    if(dep->next)
+	dep->next->prev = dep->prev;
+
+    ASSERT(erts_no_of_not_connected_dist_entries > 0);
+    erts_no_of_not_connected_dist_entries--;
+
+    dep->status |= ERTS_DE_SFLG_CONNECTED;
+    dep->flags = flags;
+    dep->cid = cid;
+    dep->connection_id++;
+    dep->connection_id &= ERTS_DIST_EXT_CON_ID_MASK;
+    dep->prev = NULL;
+
+    if(flags & DFLAG_PUBLISHED) {
+	dep->next = erts_visible_dist_entries;
+	if(erts_visible_dist_entries) {
+	    ASSERT(erts_visible_dist_entries->prev == NULL);
+	    erts_visible_dist_entries->prev = dep;
+	}
+	erts_visible_dist_entries = dep;
+	erts_no_of_visible_dist_entries++;
+    }
+    else {
+	dep->next = erts_hidden_dist_entries;
+	if(erts_hidden_dist_entries) {
+	    ASSERT(erts_hidden_dist_entries->prev == NULL);
+	    erts_hidden_dist_entries->prev = dep;
+	}
+	erts_hidden_dist_entries = dep;
+	erts_no_of_hidden_dist_entries++;
+    }
+    erts_smp_rwmtx_rwunlock(&erts_dist_table_rwmtx);
+}
+
+/* -- Node table --------------------------------------------------------- */
+
+/* Some large primes */
+#define PRIME0 ((HashValue) 268438039)
+#define PRIME1 ((HashValue) 268440479)
+#define PRIME2 ((HashValue) 268439161)
+#define PRIME3 ((HashValue) 268437017)
+
+static HashValue
+node_table_hash(void *venp)
+{
+    Uint32 cre = ((ErlNode *) venp)->creation;
+    HashValue h = atom_tab(atom_val(((ErlNode *) venp)->sysname))->slot.bucket.hvalue;
+
+    h *= PRIME0;
+    h += cre & 0xff;
+
+#if MAX_CREATION >= (1 << 8)
+    h *= PRIME1;
+    h += (cre >> 8) & 0xff;
+#endif
+
+#if MAX_CREATION >= (1 << 16)
+    h *= PRIME2;
+    h += (cre >> 16) & 0xff;
+#endif
+
+#if MAX_CREATION >= (1 << 24)
+    h *= PRIME3;
+    h += (cre >> 24) & 0xff;
+#endif
+
+#if 0
+/* XXX Problems in older versions of GCC */
+ #if MAX_CREATION >= (1UL << 32)
+ #error "MAX_CREATION larger than size of expected creation storage (Uint32)"
+ #endif
+#endif
+    return h;
+}
+
+static int
+node_table_cmp(void *venp1, void *venp2)
+{
+    return ((((ErlNode *) venp1)->sysname == ((ErlNode *) venp2)->sysname
+	     && ((ErlNode *) venp1)->creation == ((ErlNode *) venp2)->creation)
+	    ? 0
+	    : 1);
+}
+
+static void*
+node_table_alloc(void *venp_tmpl)
+{
+    ErlNode *enp;
+
+    if(((ErlNode *) venp_tmpl) == erts_this_node)
+	return venp_tmpl;
+
+    enp = (ErlNode *) erts_alloc(ERTS_ALC_T_NODE_ENTRY, sizeof(ErlNode));
+
+    node_entries++;
+
+    erts_refc_init(&enp->refc, -1);
+    enp->creation = ((ErlNode *) venp_tmpl)->creation;
+    enp->sysname = ((ErlNode *) venp_tmpl)->sysname;
+    enp->dist_entry = erts_find_or_insert_dist_entry(((ErlNode *) venp_tmpl)->sysname);
+
+    return (void *) enp;
+}
+
+static void
+node_table_free(void *venp)
+{
+    ErlNode *enp = (ErlNode *) venp;
+
+    if(enp == erts_this_node)
+	return;
+
+    erts_deref_dist_entry(enp->dist_entry);
+#ifdef DEBUG
+    sys_memset(venp, 0x55, sizeof(ErlNode));
+#endif
+    erts_free(ERTS_ALC_T_NODE_ENTRY, venp);
+
+    ASSERT(node_entries > 1);
+    node_entries--;
+}
+
+Uint
+erts_node_table_size(void)
+{
+    Uint res;
+#ifdef DEBUG
+    HashInfo hi;
+#endif
+    int lock = !ERTS_IS_CRASH_DUMPING;
+    if (lock)
+	erts_smp_rwmtx_rwlock(&erts_node_table_rwmtx);
+#ifdef DEBUG
+    hash_get_info(&hi, &erts_node_table);
+    ASSERT(node_entries == hi.objs);
+#endif
+    res = hash_table_sz(&erts_node_table) + node_entries*sizeof(ErlNode);
+    if (lock)
+	erts_smp_rwmtx_rwunlock(&erts_node_table_rwmtx);
+    return res;
+}
+
+void
+erts_node_table_info(int to, void *to_arg)
+{
+    int lock = !ERTS_IS_CRASH_DUMPING;
+    if (lock)
+	erts_smp_rwmtx_rwlock(&erts_node_table_rwmtx);
+    hash_info(to, to_arg, &erts_node_table);
+    if (lock)
+	erts_smp_rwmtx_rwunlock(&erts_node_table_rwmtx);
+}
+
+
+ErlNode *erts_find_or_insert_node(Eterm sysname, Uint creation)
+{
+    ErlNode *res;
+    ErlNode ne;
+    ne.sysname = sysname;
+    ne.creation = creation;
+    erts_smp_rwmtx_rwlock(&erts_node_table_rwmtx);
+    res = hash_put(&erts_node_table, (void *) &ne);
+    ASSERT(res);
+    if (res != erts_this_node) {
+	long refc = erts_refc_inctest(&res->refc, 0);
+	if (refc < 2) /* New or pending delete */
+	    erts_refc_inc(&res->refc, 1);
+    }
+    erts_smp_rwmtx_rwunlock(&erts_node_table_rwmtx);
+    return res;
+}
+
+void erts_delete_node(ErlNode *enp)
+{
+    ASSERT(enp != erts_this_node);
+    if(enp != erts_this_node) {
+	erts_smp_rwmtx_rwlock(&erts_node_table_rwmtx);
+	/*
+	 * Another thread might have looked up this node after we
+	 * decided to delete it (refc became zero). If so, the other
+	 * thread incremented refc twice. Once for the new reference
+	 * and once for this thread. Therefore, delete node if refc
+	 * is 0 or -1 after a decrement.
+	 */
+	if (erts_refc_dectest(&enp->refc, -1) <= 0)
+	    (void) hash_erase(&erts_node_table, (void *) enp);
+	erts_smp_rwmtx_rwunlock(&erts_node_table_rwmtx);
+    }
+}
+
+struct pn_data {
+    int to;
+    void *to_arg;
+    Eterm sysname;
+    int no_sysname;
+    int no_total;
+};
+
+static void print_node(void *venp, void *vpndp)
+{
+    struct pn_data *pndp = ((struct pn_data *) vpndp);
+    ErlNode *enp = ((ErlNode *) venp);
+
+    if(pndp->sysname == NIL
+       || enp->sysname == pndp->sysname) {
+	if (pndp->no_sysname == 0) {
+	    erts_print(pndp->to, pndp->to_arg, "Creation:");
+	}
+	if(pndp->sysname == NIL) {
+	    erts_print(pndp->to, pndp->to_arg, "Name: %T ", enp->sysname);
+	}
+	erts_print(pndp->to, pndp->to_arg, " %d", enp->creation);
+#ifdef DEBUG
+	erts_print(pndp->to, pndp->to_arg, " (refc=%ld)",
+		   erts_refc_read(&enp->refc, 1));
+#endif
+	pndp->no_sysname++;
+    }
+    pndp->no_total++;
+}
+
+void erts_print_node_info(int to,
+			  void *to_arg,
+			  Eterm sysname,
+			  int *no_sysname,
+			  int *no_total)
+{
+    int lock = !ERTS_IS_CRASH_DUMPING;
+    struct pn_data pnd;
+
+    pnd.to = to;
+    pnd.to_arg = to_arg;
+    pnd.sysname = sysname;
+    pnd.no_sysname = 0;
+    pnd.no_total = 0;
+
+    if (lock)
+	erts_smp_rwmtx_rwlock(&erts_node_table_rwmtx);
+    hash_foreach(&erts_node_table, print_node, (void *) &pnd);
+    if (pnd.no_sysname != 0) {
+	erts_print(to, to_arg, "\n");
+    }
+    if (lock)
+	erts_smp_rwmtx_rwunlock(&erts_node_table_rwmtx);
+
+    if(no_sysname)
+	*no_sysname = pnd.no_sysname;
+    if(no_total)
+	*no_total = pnd.no_total;
+}
+
+/* ----------------------------------------------------------------------- */
+
+void
+erts_set_this_node(Eterm sysname, Uint creation)
+{
+    erts_smp_rwmtx_rwlock(&erts_node_table_rwmtx);
+    erts_smp_rwmtx_rwlock(&erts_dist_table_rwmtx);
+
+    (void) hash_erase(&erts_dist_table, (void *) erts_this_dist_entry);
+    erts_this_dist_entry->sysname = sysname;
+    erts_this_dist_entry->creation = creation;
+    (void) hash_put(&erts_dist_table, (void *) erts_this_dist_entry);
+
+    (void) hash_erase(&erts_node_table, (void *) erts_this_node);
+    erts_this_node->sysname = sysname;
+    erts_this_node->creation = creation;
+    (void) hash_put(&erts_node_table, (void *) erts_this_node);
+
+    erts_smp_rwmtx_rwunlock(&erts_dist_table_rwmtx);
+    erts_smp_rwmtx_rwunlock(&erts_node_table_rwmtx);
+
+}
+
+void erts_init_node_tables(void)
+{
+    HashFunctions f;
+
+    f.hash  = (H_FUN)			dist_table_hash;
+    f.cmp   = (HCMP_FUN)		dist_table_cmp;
+    f.alloc = (HALLOC_FUN)		dist_table_alloc;
+    f.free  = (HFREE_FUN)		dist_table_free;
+
+    erts_this_dist_entry = erts_alloc(ERTS_ALC_T_DIST_ENTRY, sizeof(DistEntry));
+    dist_entries = 1;
+
+    hash_init(ERTS_ALC_T_DIST_TABLE, &erts_dist_table, "dist_table", 11, f);
+
+    erts_hidden_dist_entries				= NULL;
+    erts_visible_dist_entries				= NULL;
+    erts_not_connected_dist_entries			= NULL;
+    erts_no_of_hidden_dist_entries			= 0;
+    erts_no_of_visible_dist_entries			= 0;
+    erts_no_of_not_connected_dist_entries		= 0;
+
+    erts_this_dist_entry->next				= NULL;
+    erts_this_dist_entry->prev				= NULL;
+    erts_refc_init(&erts_this_dist_entry->refc, 1); /* erts_this_node */
+
+    erts_smp_rwmtx_init_x(&erts_this_dist_entry->rwmtx,
+			  "dist_entry",
+			  make_small(ERST_INTERNAL_CHANNEL_NO));
+    erts_this_dist_entry->sysname			= am_Noname;
+    erts_this_dist_entry->cid				= NIL;
+    erts_this_dist_entry->connection_id			= 0;
+    erts_this_dist_entry->status			= 0;
+    erts_this_dist_entry->flags				= 0;
+    erts_this_dist_entry->version			= 0;
+
+    erts_smp_mtx_init_x(&erts_this_dist_entry->lnk_mtx,
+			"dist_entry_links",
+			make_small(ERST_INTERNAL_CHANNEL_NO));
+    erts_this_dist_entry->node_links			= NULL;
+    erts_this_dist_entry->nlinks			= NULL;
+    erts_this_dist_entry->monitors			= NULL;
+
+    erts_smp_spinlock_init_x(&erts_this_dist_entry->qlock,
+			     "dist_entry_out_queue",
+			     make_small(ERST_INTERNAL_CHANNEL_NO));
+    erts_this_dist_entry->qflgs				= 0;
+    erts_this_dist_entry->qsize				= 0;
+    erts_this_dist_entry->out_queue.first		= NULL;
+    erts_this_dist_entry->out_queue.last		= NULL;
+    erts_this_dist_entry->suspended.first		= NULL;
+    erts_this_dist_entry->suspended.last		= NULL;
+
+    erts_this_dist_entry->finalized_out_queue.first	= NULL;
+    erts_this_dist_entry->finalized_out_queue.last	= NULL;
+    erts_smp_atomic_init(&erts_this_dist_entry->dist_cmd_scheduled, 0);
+    erts_port_task_handle_init(&erts_this_dist_entry->dist_cmd);
+    erts_this_dist_entry->send				= NULL;
+    erts_this_dist_entry->cache				= NULL;
+
+    (void) hash_put(&erts_dist_table, (void *) erts_this_dist_entry);
+
+    f.hash  = (H_FUN)      			node_table_hash;
+    f.cmp   = (HCMP_FUN)   			node_table_cmp;
+    f.alloc = (HALLOC_FUN) 			node_table_alloc;
+    f.free  = (HFREE_FUN)  			node_table_free;
+
+    hash_init(ERTS_ALC_T_NODE_TABLE, &erts_node_table, "node_table", 11, f);
+
+    erts_this_node = erts_alloc(ERTS_ALC_T_NODE_ENTRY, sizeof(ErlNode));
+    node_entries = 1;
+
+    erts_refc_init(&erts_this_node->refc, 1); /* The system itself */
+    erts_this_node->sysname			= am_Noname;
+    erts_this_node->creation			= 0;
+    erts_this_node->dist_entry			= erts_this_dist_entry;
+
+    (void) hash_put(&erts_node_table, (void *) erts_this_node);
+
+    erts_smp_rwmtx_init(&erts_node_table_rwmtx, "node_table");
+    erts_smp_rwmtx_init(&erts_dist_table_rwmtx, "dist_table");
+
+    references_atoms_need_init = 1;
+}
+
+#ifdef ERTS_SMP
+#ifdef ERTS_ENABLE_LOCK_CHECK
+int erts_lc_is_de_rwlocked(DistEntry *dep)
+{
+    return erts_smp_lc_rwmtx_is_rwlocked(&dep->rwmtx);
+}
+int erts_lc_is_de_rlocked(DistEntry *dep)
+{
+    return erts_smp_lc_rwmtx_is_rlocked(&dep->rwmtx);
+}
+#endif
+#endif
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * The following is only supposed to be used for testing, and debugging.     *
+ *                                                                           *
+ * erts_get_node_and_dist_references() returns a table of all references to  *
+ * all entries in the node and dist tables. The hole system will be searched *
+ * at once. This will give a consistent view over the references, but can    *
+ * can damage the real-time properties of the system.                        *
+\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#include "erl_db.h"
+
+#undef  INIT_AM
+#define INIT_AM(S) AM_ ## S = am_atom_put(#S, sizeof(#S) - 1)
+
+static Eterm AM_heap;
+static Eterm AM_link;
+static Eterm AM_monitor;
+static Eterm AM_process;
+static Eterm AM_port;
+static Eterm AM_ets;
+static Eterm AM_binary;
+static Eterm AM_match_spec;
+static Eterm AM_control;
+static Eterm AM_dist;
+static Eterm AM_node;
+static Eterm AM_dist_references;
+static Eterm AM_node_references;
+static Eterm AM_system;
+static Eterm AM_timer;
+#ifdef HYBRID
+static Eterm AM_processes;
+#endif
+
+static void setup_reference_table(void);
+static Eterm reference_table_term(Uint **hpp, Uint *szp);
+static void delete_reference_table(void);
+
+#if BIG_UINT_HEAP_SIZE > 3 /* 2-tuple */
+#define ID_HEAP_SIZE BIG_UINT_HEAP_SIZE
+#else
+#define ID_HEAP_SIZE 3 /* 2-tuple */
+#endif
+
+typedef struct node_referrer_ {
+    struct node_referrer_ *next;
+    int heap_ref;
+    int link_ref;
+    int monitor_ref;
+    int ets_ref;
+    int bin_ref;
+    int timer_ref;
+    int system_ref;
+    Eterm id;
+    Uint id_heap[ID_HEAP_SIZE];
+} NodeReferrer;
+
+typedef struct {
+    ErlNode *node;
+    NodeReferrer *referrers;
+} ReferredNode;
+
+typedef struct dist_referrer_ {
+    struct dist_referrer_ *next;
+    int heap_ref;
+    int node_ref;
+    int ctrl_ref;
+    Eterm id;
+    Uint creation;
+} DistReferrer;
+
+typedef struct {
+    DistEntry *dist;
+    DistReferrer *referrers;
+} ReferredDist;
+
+typedef struct inserted_bin_ {
+    struct inserted_bin_ *next;
+    Binary *bin_val;
+} InsertedBin;
+
+static ReferredNode *referred_nodes;
+static int no_referred_nodes;
+static ReferredDist *referred_dists;
+static int no_referred_dists;
+static InsertedBin *inserted_bins;
+
+Eterm
+erts_get_node_and_dist_references(struct process *proc)
+{
+    Uint *hp;
+    Uint size;
+    Eterm res;
+#ifdef DEBUG
+    Uint *endp;
+#endif
+
+    erts_smp_proc_unlock(proc, ERTS_PROC_LOCK_MAIN);
+    erts_smp_block_system(0);
+    /* No need to lock any thing since we are alone... */
+
+    if (references_atoms_need_init) {
+	INIT_AM(heap);
+	INIT_AM(link);
+	INIT_AM(monitor);
+	INIT_AM(process);
+	INIT_AM(port);
+	INIT_AM(ets);
+	INIT_AM(binary);
+	INIT_AM(match_spec);
+	INIT_AM(control);
+	INIT_AM(dist);
+	INIT_AM(node);
+	INIT_AM(dist_references);
+	INIT_AM(node_references);
+	INIT_AM(timer);
+	INIT_AM(system);
+#ifdef HYBRID
+	INIT_AM(processes);
+#endif
+	references_atoms_need_init = 0;
+    }
+
+    setup_reference_table();
+
+    /* Get term size */
+    size = 0;
+    (void) reference_table_term(NULL, &size);
+
+    hp = HAlloc(proc, size);
+#ifdef DEBUG
+    ASSERT(size > 0);
+    endp = hp + size;
+#endif
+
+    /* Write term */
+    res = reference_table_term(&hp, NULL);
+
+    ASSERT(endp == hp);
+
+    delete_reference_table();
+
+    erts_smp_release_system();
+    erts_smp_proc_lock(proc, ERTS_PROC_LOCK_MAIN);
+    return res;
+}
+
+#define HEAP_REF 1
+#define LINK_REF 2
+#define ETS_REF  3 
+#define BIN_REF  4
+#define NODE_REF 5
+#define CTRL_REF 6
+#define MONITOR_REF 7
+#define TIMER_REF 8
+#define SYSTEM_REF 9
+
+#define INC_TAB_SZ 10
+
+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;
+	drp->id = id;
+	drp->creation = creation;
+	drp->heap_ref = 0;
+	drp->node_ref = 0;
+	drp->ctrl_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;
+    default:		ASSERT(0);
+    }
+}
+
+static void
+insert_dist_entry(DistEntry *dist, int type, Eterm id, Uint creation)
+{
+    ReferredDist *rdp = NULL;
+    int i;
+
+    for(i = 0; i < no_referred_dists; i++) {
+	if(dist == referred_dists[i].dist) {
+	    rdp = &referred_dists[i];
+	    break;
+	}
+    }
+
+    if(!rdp)
+	erl_exit(1,
+		 "Reference to non-existing distribution table entry found!\n");
+
+    insert_dist_referrer(rdp, type, id, creation);
+}
+
+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_node(ErlNode *node, int type, Eterm id)
+{
+    int i;
+    ReferredNode *rnp = NULL;
+    for(i = 0; i < no_referred_nodes; i++) {
+	if(node == referred_nodes[i].node) {
+	    rnp = &referred_nodes[i];
+	    break;
+	}
+    }
+
+    if (!rnp)
+	erl_exit(1, "Reference to non-existing node table entry found!\n");
+
+    insert_node_referrer(rnp, type, id);
+}
+
+static void
+insert_erl_node(void *venp, void *unused)
+{
+    ErlNode *enp = (ErlNode *) venp;
+
+    insert_dist_entry(enp->dist_entry, NODE_REF, enp->sysname, enp->creation);
+}
+
+struct insert_offheap2_arg {
+    int type;
+    Eterm id;
+};
+
+static void insert_offheap(ErlOffHeap *, int, Eterm);
+
+static void
+insert_offheap2(ErlOffHeap *oh, void *arg) 
+{
+    struct insert_offheap2_arg *a = (struct insert_offheap2_arg *) arg;
+    insert_offheap(oh, a->type, a->id);
+}
+
+static void
+insert_offheap(ErlOffHeap *oh, int type, Eterm id)
+{
+    if(oh->externals) {
+	ExternalThing *etp = oh->externals;
+	while (etp) {
+	    insert_node(etp->node, type, id);
+	    etp = etp->next;
+	}
+    }
+
+    if(oh->mso) {
+	ProcBin *pb;
+	struct insert_offheap2_arg a;
+	a.type = BIN_REF;
+	for(pb = oh->mso; pb; pb = pb->next) {
+	    if(IsMatchProgBinary(pb->val)) {
+		InsertedBin *ib;
+		int insert_bin = 1;
+		for (ib = inserted_bins; ib; ib = ib->next)
+		    if(ib->bin_val == pb->val) {
+			insert_bin = 0;
+			break;
+		    }
+		if (insert_bin) {
+		    Uint id_heap[BIG_UINT_HEAP_SIZE];
+		    Uint *hp = &id_heap[0];
+		    InsertedBin *nib;
+		    a.id = erts_bld_uint(&hp, NULL, (Uint) pb->val);
+		    erts_match_prog_foreach_offheap(pb->val,
+						    insert_offheap2,
+						    (void *) &a);
+		    nib = erts_alloc(ERTS_ALC_T_NC_TMP, sizeof(InsertedBin));
+		    nib->bin_val = pb->val;
+		    nib->next = inserted_bins;
+		    inserted_bins = nib;
+		}
+	    }
+	}
+    }
+
+#if 0
+    if(oh->funs) {
+	/* No need to */
+    }
+#endif
+}
+
+static void doit_insert_monitor(ErtsMonitor *monitor, void *p)
+{
+    Eterm *idp = p;
+    if(is_external(monitor->pid))
+	insert_node(external_thing_ptr(monitor->pid)->node, MONITOR_REF, *idp);
+    if(is_external(monitor->ref))
+	insert_node(external_thing_ptr(monitor->ref)->node, MONITOR_REF, *idp);
+}
+
+static void doit_insert_link(ErtsLink *lnk, void *p)
+{
+    Eterm *idp = p;
+    if(is_external(lnk->pid))
+	insert_node(external_thing_ptr(lnk->pid)->node, LINK_REF, 
+		    *idp);
+}
+
+
+static void
+insert_monitors(ErtsMonitor *monitors, Eterm id)
+{
+    erts_doforall_monitors(monitors,&doit_insert_monitor,&id);
+}
+
+static void
+insert_links(ErtsLink *lnk, Eterm id)
+{
+    erts_doforall_links(lnk,&doit_insert_link,&id);
+}
+
+static void doit_insert_link2(ErtsLink *lnk, void *p)
+{
+    Eterm *idp = p;
+    if(is_external(lnk->pid))
+	insert_node(external_thing_ptr(lnk->pid)->node, LINK_REF, 
+		    *idp);
+    insert_links(ERTS_LINK_ROOT(lnk), *idp);
+}
+
+static void
+insert_links2(ErtsLink *lnk, Eterm id)
+{
+    erts_doforall_links(lnk,&doit_insert_link2,&id);
+}
+
+static void
+insert_ets_table(DbTable *tab, void *unused)
+{
+    struct insert_offheap2_arg a;
+    a.type = ETS_REF;
+    a.id = tab->common.id;
+    erts_db_foreach_offheap(tab, insert_offheap2, (void *) &a);
+}
+
+static void
+insert_bif_timer(Eterm receiver, Eterm msg, ErlHeapFragment *bp, void *arg)
+{
+    if (bp) {
+	Eterm heap[3];
+	insert_offheap(&bp->off_heap,
+		       TIMER_REF,
+		       (is_internal_pid(receiver)
+			? receiver
+			: TUPLE2(&heap[0], AM_process, receiver)));
+    }
+}
+
+static void
+init_referred_node(void *node, void *unused)
+{
+    referred_nodes[no_referred_nodes].node = (ErlNode *) node;
+    referred_nodes[no_referred_nodes].referrers = NULL;
+    no_referred_nodes++;
+}
+
+static void
+init_referred_dist(void *dist, void *unused)
+{
+    referred_dists[no_referred_dists].dist = (DistEntry *) dist;
+    referred_dists[no_referred_dists].referrers = NULL;
+    no_referred_dists++;
+}
+
+#ifdef ERTS_SMP
+static void
+insert_sys_msg(Eterm from, Eterm to, Eterm msg, ErlHeapFragment *bp)
+{
+    insert_offheap(&bp->off_heap, HEAP_REF, to);
+}
+#endif
+
+static void
+setup_reference_table(void)
+{
+    ErlHeapFragment *hfp;
+    DistEntry *dep;
+    HashInfo hi;
+    int i;
+    Eterm heap[3];
+
+    inserted_bins = NULL;
+
+    hash_get_info(&hi, &erts_node_table);
+    referred_nodes = erts_alloc(ERTS_ALC_T_NC_TMP,
+				hi.objs*sizeof(ReferredNode));
+    no_referred_nodes = 0;
+    hash_foreach(&erts_node_table, init_referred_node, NULL);
+    ASSERT(no_referred_nodes == hi.objs);
+
+    hash_get_info(&hi, &erts_dist_table);
+    referred_dists = erts_alloc(ERTS_ALC_T_NC_TMP,
+				hi.objs*sizeof(ReferredDist));
+    no_referred_dists = 0;
+    hash_foreach(&erts_dist_table, init_referred_dist, NULL);
+    ASSERT(no_referred_dists == hi.objs);
+
+    /* Go through the hole system, and build a table of all references
+       to ErlNode and DistEntry structures */
+
+    insert_node(erts_this_node,
+		SYSTEM_REF,
+		TUPLE2(&heap[0], AM_system, am_undefined));
+
+#ifdef HYBRID
+    /* Insert Heap */
+    insert_offheap(&erts_global_offheap,
+		   HEAP_REF,
+		   TUPLE2(&heap[0], AM_processes, am_undefined));
+#endif
+
+    /* Insert all processes */
+    for (i = 0; i < erts_max_processes; i++)
+	if (process_tab[i]) {
+	    ErlMessage *msg;
+	    /* Insert Heap */
+	    insert_offheap(&(process_tab[i]->off_heap),
+			   HEAP_REF,
+			   process_tab[i]->id);
+	    /* Insert message buffers */
+	    for(hfp = process_tab[i]->mbuf; hfp; hfp = hfp->next)
+		insert_offheap(&(hfp->off_heap),
+			       HEAP_REF,
+			       process_tab[i]->id);
+	    /* Insert msg msg buffers */
+	    for (msg = process_tab[i]->msg.first; msg; msg = msg->next) {
+		ErlHeapFragment *heap_frag = NULL;
+		if (msg->data.attached) {
+		    if (is_value(ERL_MESSAGE_TERM(msg)))
+			heap_frag = msg->data.heap_frag;
+		    else {
+			if (msg->data.dist_ext->dep)
+			    insert_dist_entry(msg->data.dist_ext->dep,
+					      HEAP_REF, process_tab[i]->id, 0);
+			if (is_not_nil(ERL_MESSAGE_TOKEN(msg)))
+			    heap_frag = erts_dist_ext_trailer(msg->data.dist_ext);
+		    }
+		}
+		if (heap_frag)
+		    insert_offheap(&(heap_frag->off_heap),
+				   HEAP_REF,
+				   process_tab[i]->id);
+	    }
+#ifdef ERTS_SMP
+	    for (msg = process_tab[i]->msg_inq.first; msg; msg = msg->next) {
+		ErlHeapFragment *heap_frag = NULL;
+		if (msg->data.attached) {
+		    if (is_value(ERL_MESSAGE_TERM(msg)))
+			heap_frag = msg->data.heap_frag;
+		    else {
+			if (msg->data.dist_ext->dep)
+			    insert_dist_entry(msg->data.dist_ext->dep,
+					      HEAP_REF, process_tab[i]->id, 0);
+			if (is_not_nil(ERL_MESSAGE_TOKEN(msg)))
+			    heap_frag = erts_dist_ext_trailer(msg->data.dist_ext);
+		    }
+		}
+		if (heap_frag)
+		    insert_offheap(&(heap_frag->off_heap),
+				   HEAP_REF,
+				   process_tab[i]->id);
+	    }
+#endif
+	    /* Insert links */
+	    if(process_tab[i]->nlinks)
+		insert_links(process_tab[i]->nlinks, process_tab[i]->id);
+	    if(process_tab[i]->monitors)
+		insert_monitors(process_tab[i]->monitors, process_tab[i]->id);
+	    /* Insert controller */
+	    {
+		DistEntry *dep = ERTS_PROC_GET_DIST_ENTRY(process_tab[i]);
+		if (dep)
+		    insert_dist_entry(dep, CTRL_REF, process_tab[i]->id, 0);
+	    }
+	}
+    
+#ifdef ERTS_SMP
+    erts_foreach_sys_msg_in_q(insert_sys_msg);
+#endif
+
+    /* Insert all ports */
+    for (i = 0; i < erts_max_ports; i++) {
+	if (erts_port[i].status & ERTS_PORT_SFLGS_DEAD)
+	    continue;
+
+	/* Insert links */
+	if(erts_port[i].nlinks)
+	    insert_links(erts_port[i].nlinks, erts_port[i].id);
+	/* Insert port data */
+	for(hfp = erts_port[i].bp; hfp; hfp = hfp->next)
+	    insert_offheap(&(hfp->off_heap), HEAP_REF, erts_port[i].id);
+	/* Insert controller */
+	if (erts_port[i].dist_entry)
+	    insert_dist_entry(erts_port[i].dist_entry,
+			      CTRL_REF,
+			      erts_port[i].id,
+			      0);
+    }
+
+    { /* Add binaries stored elsewhere ... */
+	ErlOffHeap oh;
+	ProcBin pb[2] = {{0},{0}};
+	ProcBin *mso = NULL;
+	int i = 0;
+	Binary *default_match_spec;
+	Binary *default_meta_match_spec;
+
+	/* Only the ProcBin members val and next will be inspected
+	   (by insert_offheap()) */
+#undef  ADD_BINARY
+#define ADD_BINARY(Bin)					\
+	if ((Bin)) {					\
+	    pb[i].val = (Bin);				\
+	    pb[i].next = mso;				\
+	    mso = &pb[i];				\
+	    i++;					\
+	}
+
+	erts_get_default_trace_pattern(NULL,
+				       &default_match_spec,
+				       &default_meta_match_spec,
+				       NULL,
+				       NULL);
+
+	ADD_BINARY(default_match_spec);
+	ADD_BINARY(default_meta_match_spec);
+
+	oh.mso = mso;
+	oh.externals = NULL;
+#ifndef HYBRID /* FIND ME! */
+	oh.funs = NULL;
+#endif
+	insert_offheap(&oh, BIN_REF, AM_match_spec);
+#undef  ADD_BINARY
+    }
+
+    /* Insert all dist links */
+
+    for(dep = erts_visible_dist_entries; dep; dep = dep->next) {
+	if(dep->nlinks)
+	    insert_links2(dep->nlinks, dep->sysname);
+	if(dep->node_links)
+	    insert_links(dep->node_links, dep->sysname);
+	if(dep->monitors)
+	    insert_monitors(dep->monitors, dep->sysname);
+    }
+
+    for(dep = erts_hidden_dist_entries; dep; dep = dep->next) {
+	if(dep->nlinks)
+	    insert_links2(dep->nlinks, dep->sysname);
+	if(dep->node_links)
+	    insert_links(dep->node_links, dep->sysname);
+	if(dep->monitors)
+	    insert_monitors(dep->monitors, dep->sysname);
+    }
+
+    /* Not connected dist entries should not have any links,
+       but inspect them anyway */
+    for(dep = erts_not_connected_dist_entries; dep; dep = dep->next) {
+	if(dep->nlinks)
+	    insert_links2(dep->nlinks, dep->sysname);
+	if(dep->node_links)
+	    insert_links(dep->node_links, dep->sysname);
+	if(dep->monitors)
+	    insert_monitors(dep->monitors, dep->sysname);
+    }
+
+    /* Insert all ets tables */
+    erts_db_foreach_table(insert_ets_table, NULL);
+
+    /* Insert all bif timers */
+    erts_bif_timer_foreach(insert_bif_timer, NULL);
+
+    /* Insert node table (references to dist) */
+    hash_foreach(&erts_node_table, insert_erl_node, NULL);
+}
+
+/*
+  Returns an erlang term on this format:
+
+ 	 {{node_references,
+ 	   [{{Node, Creation}, Refc,
+	     [{{ReferrerType, ID},
+	       [{ReferenceType,References},
+		'...']},
+	      '...']},
+	     '...']},
+ 	  {dist_references,
+ 	   [{Node, Refc,
+	     [{{ReferrerType, ID},
+	       [{ReferenceType,References},
+		'...']},
+	      '...']},
+ 	    '...']}}
+ */
+
+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}] */
+	    nril = MK_CONS(tup, nril);
+	}
+
+	/* NodeList = [{{Node, Creation}, Refc, NodeReferenceIdList}] */
+
+	tup = MK_2TUP(referred_nodes[i].node->sysname,
+		      MK_UINT(referred_nodes[i].node->creation));
+	tup = MK_3TUP(tup, MK_UINT(erts_refc_read(&referred_nodes[i].node->refc, 1)), nril);
+	nl = MK_CONS(tup, nl);
+    }
+
+    for(i = 0; i < no_referred_dists; i++) {
+	DistReferrer *drp;
+	Eterm dril = NIL;
+	for(drp = referred_dists[i].referrers; drp; drp = drp->next) {
+	    Eterm drl = NIL;
+
+	    /* DistReferenceList = [{ReferenceType,References}] */
+	    if(drp->node_ref) {
+		tup = MK_2TUP(AM_node, MK_UINT(drp->node_ref));
+		drl = MK_CONS(tup, drl);
+	    }
+	    if(drp->ctrl_ref) {
+		tup = MK_2TUP(AM_control, MK_UINT(drp->ctrl_ref));
+		drl = MK_CONS(tup, drl);
+	    }
+	    if(drp->heap_ref) {
+		tup = MK_2TUP(AM_heap, MK_UINT(drp->heap_ref));
+		drl = MK_CONS(tup, drl);
+	    }
+
+	    if (is_internal_pid(drp->id)) {
+		ASSERT(!drp->node_ref);
+		tup = MK_2TUP(AM_process, drp->id);
+	    }
+	    else if(is_internal_port(drp->id)) {
+		ASSERT(drp->ctrl_ref && !drp->node_ref);
+		tup = MK_2TUP(AM_port, drp->id);
+	    }
+	    else {
+		ASSERT(!drp->ctrl_ref && drp->node_ref);
+		ASSERT(is_atom(drp->id));
+		tup = MK_2TUP(drp->id, MK_UINT(drp->creation));
+		tup = MK_2TUP(AM_node, tup);
+	    }
+
+	    tup = MK_2TUP(tup, drl);
+
+	    /* DistReferenceIdList =
+	       [{{ReferrerType, ID}, DistReferenceList}] */
+	    dril = MK_CONS(tup, dril);
+
+	}
+
+	/* DistList = [{Dist, Refc, ReferenceIdList}] */
+	tup = MK_3TUP(referred_dists[i].dist->sysname,
+		      MK_UINT(erts_refc_read(&referred_dists[i].dist->refc, 1)),
+		      dril);
+	dl = MK_CONS(tup, dl);
+    }
+
+    /* {{node_references, NodeList}, {dist_references, DistList}} */
+
+    tup = MK_2TUP(AM_node_references, nl);
+    tup2 = MK_2TUP(AM_dist_references, dl);
+    tup = MK_2TUP(tup, tup2);
+
+    return tup;
+#undef  MK_2TUP
+#undef  MK_3TUP
+#undef  MK_CONS
+#undef  MK_UINT
+
+}
+
+static void
+delete_reference_table(void)
+{
+    Uint i;
+    for(i = 0; i < no_referred_nodes; i++) {
+	NodeReferrer *nrp;
+	NodeReferrer *tnrp;
+	nrp = referred_nodes[i].referrers;
+	while(nrp) {
+	    tnrp = nrp;
+	    nrp = nrp->next;
+	    erts_free(ERTS_ALC_T_NC_TMP, (void *) tnrp);
+	}
+    }
+    if (referred_nodes)
+	erts_free(ERTS_ALC_T_NC_TMP, (void *) referred_nodes);
+
+    for(i = 0; i < no_referred_dists; i++) {
+	DistReferrer *drp;
+	DistReferrer *tdrp;
+	drp = referred_dists[i].referrers;
+	while(drp) {
+	    tdrp = drp;
+	    drp = drp->next;
+	    erts_free(ERTS_ALC_T_NC_TMP, (void *) tdrp);
+	}
+    }
+    if (referred_dists)
+	erts_free(ERTS_ALC_T_NC_TMP, (void *) referred_dists);
+    while(inserted_bins) {
+	InsertedBin *ib = inserted_bins;
+	inserted_bins = inserted_bins->next;
+	erts_free(ERTS_ALC_T_NC_TMP, (void *)ib);
+    }
+}
+