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path: root/erts/emulator/beam/erl_bif_info.c
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Diffstat (limited to 'erts/emulator/beam/erl_bif_info.c')
-rw-r--r--erts/emulator/beam/erl_bif_info.c287
1 files changed, 120 insertions, 167 deletions
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index a73ad826db..1eb106a551 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -589,6 +589,7 @@ static Eterm pi_args[] = {
am_min_bin_vheap_size,
am_current_location,
am_current_stacktrace,
+ am_off_heap_message_queue
};
#define ERTS_PI_ARGS ((int) (sizeof(pi_args)/sizeof(Eterm)))
@@ -636,6 +637,7 @@ pi_arg2ix(Eterm arg)
case am_min_bin_vheap_size: return 28;
case am_current_location: return 29;
case am_current_stacktrace: return 30;
+ case am_off_heap_message_queue: return 31;
default: return -1;
}
}
@@ -718,9 +720,10 @@ pi_pid2proc(Process *c_p, Eterm pid, ErtsProcLocks info_locks)
-BIF_RETTYPE
+static BIF_RETTYPE
process_info_aux(Process *BIF_P,
Process *rp,
+ ErtsProcLocks rp_locks,
Eterm rpid,
Eterm item,
int always_wrap);
@@ -811,10 +814,31 @@ process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
*fail_type = ERTS_PI_FAIL_TYPE_AWAIT_EXIT;
goto done;
}
- else if (!(locks & ERTS_PROC_LOCK_STATUS)) {
- erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_STATUS);
+ else {
+ ErtsProcLocks unlock_locks = 0;
+
+ if (c_p == rp)
+ locks |= ERTS_PROC_LOCK_MAIN;
+
+ if (!(locks & ERTS_PROC_LOCK_STATUS))
+ unlock_locks |= ERTS_PROC_LOCK_STATUS;
+
+ if (locks & ERTS_PROC_LOCK_MSGQ) {
+ /*
+ * Move in queue into private queue and
+ * release msgq lock, enabling others to
+ * send messages to the process while it
+ * is being inspected...
+ */
+ ASSERT(locks & ERTS_PROC_LOCK_MAIN);
+ ERTS_SMP_MSGQ_MV_INQ2PRIVQ(rp);
+ locks &= ~ERTS_PROC_LOCK_MSGQ;
+ unlock_locks |= ERTS_PROC_LOCK_MSGQ;
+ }
+
+ if (unlock_locks)
+ erts_smp_proc_unlock(rp, unlock_locks);
}
-
/*
* We always handle 'messages' first if it should be part
@@ -826,7 +850,7 @@ process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
if (want_messages) {
ix = pi_arg2ix(am_messages);
ASSERT(part_res[ix] == THE_NON_VALUE);
- part_res[ix] = process_info_aux(c_p, rp, pid, am_messages, always_wrap);
+ part_res[ix] = process_info_aux(c_p, rp, locks, pid, am_messages, always_wrap);
ASSERT(part_res[ix] != THE_NON_VALUE);
}
@@ -834,7 +858,7 @@ process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
ix = res_elem_ix[res_elem_ix_ix];
if (part_res[ix] == THE_NON_VALUE) {
arg = pi_ix2arg(ix);
- part_res[ix] = process_info_aux(c_p, rp, pid, arg, always_wrap);
+ part_res[ix] = process_info_aux(c_p, rp, locks, pid, arg, always_wrap);
ASSERT(part_res[ix] != THE_NON_VALUE);
}
}
@@ -965,9 +989,31 @@ BIF_RETTYPE process_info_2(BIF_ALIST_2)
ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_undefined);
}
else {
+ ErtsProcLocks unlock_locks = 0;
+
+ if (BIF_P == rp)
+ info_locks |= ERTS_PROC_LOCK_MAIN;
+
if (!(info_locks & ERTS_PROC_LOCK_STATUS))
- erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_STATUS);
- res = process_info_aux(BIF_P, rp, pid, BIF_ARG_2, 0);
+ unlock_locks |= ERTS_PROC_LOCK_STATUS;
+
+ if (info_locks & ERTS_PROC_LOCK_MSGQ) {
+ /*
+ * Move in queue into private queue and
+ * release msgq lock, enabling others to
+ * send messages to the process while it
+ * is being inspected...
+ */
+ ASSERT(info_locks & ERTS_PROC_LOCK_MAIN);
+ ERTS_SMP_MSGQ_MV_INQ2PRIVQ(rp);
+ info_locks &= ~ERTS_PROC_LOCK_MSGQ;
+ unlock_locks |= ERTS_PROC_LOCK_MSGQ;
+ }
+
+ if (unlock_locks)
+ erts_smp_proc_unlock(rp, unlock_locks);
+
+ res = process_info_aux(BIF_P, rp, info_locks, pid, BIF_ARG_2, 0);
}
ASSERT(is_value(res));
@@ -985,6 +1031,7 @@ BIF_RETTYPE process_info_2(BIF_ALIST_2)
Eterm
process_info_aux(Process *BIF_P,
Process *rp,
+ ErtsProcLocks rp_locks,
Eterm rpid,
Eterm item,
int always_wrap)
@@ -1056,171 +1103,55 @@ process_info_aux(Process *BIF_P,
break;
case am_messages: {
- ErlMessage* mp;
- int n;
-
- ERTS_SMP_MSGQ_MV_INQ2PRIVQ(rp);
- n = rp->msg.len;
- if (n == 0 || ERTS_TRACE_FLAGS(rp) & F_SENSITIVE) {
+ if (rp->msg.len == 0 || ERTS_TRACE_FLAGS(rp) & F_SENSITIVE) {
hp = HAlloc(BIF_P, 3);
} else {
- int remove_bad_messages = 0;
- struct {
- Uint copy_struct_size;
- ErlMessage* msgp;
- } *mq = erts_alloc(ERTS_ALC_T_TMP, n*sizeof(*mq));
- Sint i = 0;
- Uint heap_need = 3;
+ ErtsMessageInfo *mip;
+ Sint i;
+ Uint heap_need;
+#ifdef DEBUG
Eterm *hp_end;
+#endif
- for (mp = rp->msg.first; mp; mp = mp->next) {
- heap_need += 2;
- mq[i].msgp = mp;
- if (rp != BIF_P) {
- Eterm msg = ERL_MESSAGE_TERM(mq[i].msgp);
- if (is_value(msg)) {
- mq[i].copy_struct_size = (is_immed(msg)? 0 :
- size_object(msg));
- }
- else if (mq[i].msgp->data.attached) {
- mq[i].copy_struct_size
- = erts_msg_attached_data_size(mq[i].msgp);
- }
- else {
- /* Bad distribution message; ignore */
- remove_bad_messages = 1;
- mq[i].copy_struct_size = 0;
- }
- heap_need += mq[i].copy_struct_size;
- }
- else {
- mq[i].copy_struct_size = mp->data.attached ?
- erts_msg_attached_data_size(mp) : 0;
- }
- i++;
- }
+ mip = erts_alloc(ERTS_ALC_T_TMP,
+ rp->msg.len*sizeof(ErtsMessageInfo));
- if (rp != BIF_P) {
- hp = HAlloc(BIF_P, heap_need);
- hp_end = hp + heap_need;
- ASSERT(i == n);
- for (i--; i >= 0; i--) {
- Eterm msg = ERL_MESSAGE_TERM(mq[i].msgp);
- if (is_value(msg)) {
- if (mq[i].copy_struct_size)
- msg = copy_struct(msg,
- mq[i].copy_struct_size,
- &hp,
- &MSO(BIF_P));
- }
- else if (mq[i].msgp->data.attached) {
- ErlHeapFragment *hfp;
- /*
- * Decode it into a message buffer and attach it
- * to the message instead of the attached external
- * term.
- *
- * Note that we may not pass a process pointer
- * to erts_msg_distext2heap(), since it would then
- * try to alter locks on that process.
- */
- msg = erts_msg_distext2heap(
- NULL, NULL, &hfp, &ERL_MESSAGE_TOKEN(mq[i].msgp),
- mq[i].msgp->data.dist_ext);
-
- ERL_MESSAGE_TERM(mq[i].msgp) = msg;
- mq[i].msgp->data.heap_frag = hfp;
-
- if (is_non_value(msg)) {
- ASSERT(!mq[i].msgp->data.heap_frag);
- /* Bad distribution message; ignore */
- remove_bad_messages = 1;
- continue;
- }
- else {
- /* Make our copy of the message */
- ASSERT(size_object(msg) == erts_used_frag_sz(hfp));
- msg = copy_struct(msg,
- erts_used_frag_sz(hfp),
- &hp,
- &MSO(BIF_P));
- }
- }
- else {
- /* Bad distribution message; ignore */
- remove_bad_messages = 1;
- continue;
- }
- res = CONS(hp, msg, res);
- hp += 2;
- }
- HRelease(BIF_P, hp_end, hp+3);
- }
- else {
- for (i--; i >= 0; i--) {
- ErtsHeapFactory factory;
- Eterm msg = ERL_MESSAGE_TERM(mq[i].msgp);
-
- erts_factory_proc_prealloc_init(&factory, BIF_P,
- mq[i].copy_struct_size+2);
- if (mq[i].msgp->data.attached) {
- /* Decode it on the heap */
- erts_move_msg_attached_data_to_heap(&factory,
- mq[i].msgp);
- msg = ERL_MESSAGE_TERM(mq[i].msgp);
- ASSERT(!mq[i].msgp->data.attached);
- }
- if (is_value(msg)) {
- hp = erts_produce_heap(&factory, 2, 0);
- res = CONS(hp, msg, res);
- }
- else {
- /* Bad distribution message; ignore */
- remove_bad_messages = 1;
- continue;
- }
- erts_factory_close(&factory);
- }
- hp = HAlloc(BIF_P, 3);
- }
- erts_free(ERTS_ALC_T_TMP, mq);
- if (remove_bad_messages) {
- ErlMessage **mpp;
- /*
- * We need to remove bad distribution messages from
- * the queue, so that the value returned for
- * 'message_queue_len' is consistent with the value
- * returned for 'messages'.
- */
- mpp = &rp->msg.first;
- mp = rp->msg.first;
- while (mp) {
- if (is_value(ERL_MESSAGE_TERM(mp))) {
- mpp = &mp->next;
- mp = mp->next;
- }
- else {
- ErlMessage* bad_mp = mp;
- ASSERT(!mp->data.attached);
- if (rp->msg.save == &mp->next)
- rp->msg.save = mpp;
- if (rp->msg.last == &mp->next)
- rp->msg.last = mpp;
- *mpp = mp->next;
- mp = mp->next;
- rp->msg.len--;
- free_message(bad_mp);
- }
- }
+ /*
+ * Note that message queue may shrink when calling
+ * erts_prep_msgq_for_inspection() since it removes
+ * corrupt distribution messages.
+ */
+ heap_need = erts_prep_msgq_for_inspection(BIF_P, rp, rp_locks, mip);
+ heap_need += 3; /* top 2-tuple */
+ heap_need += rp->msg.len*2; /* Cons cells */
+
+ hp = HAlloc(BIF_P, heap_need); /* heap_need is exact */
+#ifdef DEBUG
+ hp_end = hp + heap_need;
+#endif
+
+ /* Build list of messages... */
+ for (i = rp->msg.len - 1, res = NIL; i >= 0; i--) {
+ Eterm msg = ERL_MESSAGE_TERM(mip[i].msgp);
+ Uint sz = mip[i].size;
+
+ if (sz != 0)
+ msg = copy_struct(msg, sz, &hp, &BIF_P->off_heap);
+
+ res = CONS(hp, msg, res);
+ hp += 2;
}
+
+ ASSERT(hp_end == hp + 3);
+
+ erts_free(ERTS_ALC_T_TMP, mip);
}
break;
}
case am_message_queue_len:
hp = HAlloc(BIF_P, 3);
- ERTS_SMP_MSGQ_MV_INQ2PRIVQ(rp);
res = make_small(rp->msg.len);
break;
@@ -1408,7 +1339,7 @@ process_info_aux(Process *BIF_P,
}
case am_total_heap_size: {
- ErlMessage *mp;
+ ErtsMessage *mp;
Uint total_heap_size;
Uint hsz = 3;
@@ -1418,8 +1349,6 @@ process_info_aux(Process *BIF_P,
total_heap_size += rp->mbuf_sz;
- ERTS_SMP_MSGQ_MV_INQ2PRIVQ(rp);
-
for (mp = rp->msg.first; mp; mp = mp->next)
if (mp->data.attached)
total_heap_size += erts_msg_attached_data_size(mp);
@@ -1441,7 +1370,7 @@ process_info_aux(Process *BIF_P,
case am_memory: { /* Memory consumed in bytes */
Uint hsz = 3;
- Uint size = erts_process_memory(rp);
+ Uint size = erts_process_memory(rp, 0);
(void) erts_bld_uint(NULL, &hsz, size);
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, size);
@@ -1567,6 +1496,11 @@ process_info_aux(Process *BIF_P,
break;
}
+ case am_off_heap_message_queue:
+ res = BIF_P->flags & F_OFF_HEAP_MSGQ ? am_true : am_false;
+ hp = HAlloc(BIF_P, 3);
+ break;
+
default:
return THE_NON_VALUE; /* will produce badarg */
@@ -2728,6 +2662,10 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
BIF_RET(am_true);
}
#endif
+ else if (BIF_ARG_1 == am_off_heap_message_queue) {
+ BIF_RET(erts_default_spo_flags & SPO_OFF_HEAP_MSGQ
+ ? am_true : am_false);
+ }
else if (ERTS_IS_ATOM_STR("compile_info",BIF_ARG_1)) {
Uint sz;
Eterm res = NIL, tup, text;
@@ -2766,6 +2704,20 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
else if (ERTS_IS_ATOM_STR("eager_check_io",BIF_ARG_1)) {
BIF_RET(erts_eager_check_io ? am_true : am_false);
}
+ else if (ERTS_IS_ATOM_STR("literal_test",BIF_ARG_1)) {
+#ifdef ERTS_HAVE_IS_IN_LITERAL_RANGE
+#ifdef ARCH_64
+ DECL_AM(range);
+ BIF_RET(AM_range);
+#else /* ARCH_32 */
+ DECL_AM(range_bitmask);
+ BIF_RET(AM_range_bitmask);
+#endif /* ARCH_32 */
+#else /* ! ERTS_HAVE_IS_IN_LITERAL_RANGE */
+ DECL_AM(tag);
+ BIF_RET(AM_tag);
+#endif
+ }
BIF_ERROR(BIF_P, BADARG);
}
@@ -3851,9 +3803,7 @@ BIF_RETTYPE erts_debug_set_internal_state_2(BIF_ALIST_2)
BIF_RET(am_false);
}
else {
- FLAGS(rp) |= F_FORCE_GC;
- if (BIF_P != rp)
- erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
+ ERTS_FORCE_GC(BIF_P);
BIF_RET(am_true);
}
}
@@ -4323,12 +4273,15 @@ static void os_info_init(void)
erts_free(ERTS_ALC_T_TMP, (void *) buf);
hp = erts_alloc(ERTS_ALC_T_LITERAL, (3+4)*sizeof(Eterm));
os_type_tuple = TUPLE2(hp, type, flav);
+ erts_set_literal_tag(&os_type_tuple, hp, 3);
+
hp += 3;
os_version(&major, &minor, &build);
os_version_tuple = TUPLE3(hp,
make_small(major),
make_small(minor),
make_small(build));
+ erts_set_literal_tag(&os_version_tuple, hp, 4);
}
void
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 14:43:12 +0000