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rickard/creation-fix/25.3.1/OTP-18570
* rickard/creation-fix/24.3.4/OTP-18570:
[erts] ensure no mix of external and internal identifiers
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Silently reject proposed creation and select another one when a node goes
alive if there are external identifiers in the system with the proposed
creation and the same node name that are to be used. Such identifiers would
not work as expected in various situations, and are not from the instance of
the node that are about to go alive.
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* maint:
Update copyright year
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* rickard/iovec-22.0/OTP-15618:
Utilize new dist_ctrl_get_data() features in tls_sender
Utilize I/O vectors for outgoing distribution data
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* maint:
Fix etp-ets-tables
Fix node refc test for free processes hanging around
Enhanced node refc bookkeeping
Fix node container refc tests of ETS
Fix node refc test of external data
Node container refc test for persistent terms
Include persistent term storage in node/dist refc check
Fix node refc test for system message queue
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This reverts revert-commit d293c3ff700c1a0992a32dc3da9ae18964893c23.
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* sverker/revert-big-creation:
Revert "erts: Make DFLAG_BIG_CREATION mandatory"
Revert "erts: Remove old encoding of pids, ports and refs"
Revert "erl_interface: Remove old encoding of pid,port,refs"
Revert "epmd: Support 32-bit creation values in local node"
Revert "jinterface: Remove old encoding of pid,port,refs"
Revert "erl_interface: Support 32-bit creation local cnode"
Revert "erts: Document new EPMD response ALIVE2_X_RESP"
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This reverts commit bd8f6106d44a58c261920eef72842bb3bc5a4968.
PLUS a little change in epmd_srv.c:750 ("4" -> "replylen")
that was part of e2cf4a8a4b03b9f430ba228276c3b2629159e832
by mistake.
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Cannot do unaligned word writes on sparc!
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* sverker/enable-big-creation/OTP-15603:
epmd: Support 32-bit creation values in local node
erts: Robustify epmd reply function
erts: Reject decoded local refs with too large first word
erts: Fix bug in list_to_ref
erl_interface: Remove old encoding of pid,port,refs
erts: Remove old encoding of pids, ports and refs
erts: Make DFLAG_BIG_CREATION mandatory
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* Increase distribution version from 5 to 6
* Introduce new ALIVE2_X_RESP with 32-bit creation
as reply to ALIVE2_REQ when sender dist version >= 6
* Still reply old ALIVE2_RESP with tiny creation 1..3
if sender dist version < 6.
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* Make connection_id part of the distribution handle as {ConnId, DistEntry}
in order for BIFs to verify correct connection.
* Make distribution handle opaque to net_kernel.
* Remove some unsafe lockless reads of DistEntry.flags
* Change state ERTS_DE_STATE_EXITING to be more of an internal state that
prevents erts from enqueue, encode or schedule new data to be sent. Otherwise
it should behave like ERTS_DE_STATE_CONNECTED.
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Communication between Erlang processes has conceptually always been
performed through asynchronous signaling. The runtime system
implementation has however previously preformed most operation
synchronously. In a system with only one true thread of execution, this
is not problematic (often the opposite). In a system with multiple threads
of execution (as current runtime system implementation with SMP support)
it becomes problematic. This since it often involves locking of structures
when updating them which in turn cause resource contention. Utilizing
true asynchronous communication often avoids these resource contention
issues.
The case that triggered this change was contention on the link lock due
to frequent updates of the monitor trees during communication with a
frequently used server. The signal order delivery guarantees of the
language makes it hard to change the implementation of only some signals
to use true asynchronous signaling. Therefore the implementations
of (almost) all signals have been changed.
Currently the following signals have been implemented as true
asynchronous signals:
- Message signals
- Exit signals
- Monitor signals
- Demonitor signals
- Monitor triggered signals (DOWN, CHANGE, etc)
- Link signals
- Unlink signals
- Group leader signals
All of the above already defined as asynchronous signals in the
language. The implementation of messages signals was quite
asynchronous to begin with, but had quite strict delivery constraints
due to the ordering guarantees of signals between a pair of processes.
The previously used message queue partitioned into two halves has been
replaced by a more general signal queue partitioned into three parts
that service all kinds of signals. More details regarding the signal
queue can be found in comments in the erl_proc_sig_queue.h file.
The monitor and link implementations have also been completely replaced
in order to fit the new asynchronous signaling implementation as good
as possible. More details regarding the new monitor and link
implementations can be found in the erl_monitor_link.h file.
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Just to simplify and get 4 distinctive states
IDLE, PENDING, CONNECTED and EXITING.
The old possible flag combos were:
0
PENDING
CONNECTED
CONNECTED|EXITING
EXITING
The two EXITING states did not serve any purpose
other then as a slight optimization in monitor_node(_,false,_)
to shortcut EXITING when there can be no monitors.
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to only transcode if output buffer actually contains
unsupported BIT_BINARY_EXT or EXPORT_EXT.
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to make sure it's kept alive.
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When finalizing outgoing distribution messages
we transcode them into using tuple fallbacks if the
receiver does not support bitstrings and export-funs.
This can only happen if the message was first encoded toward
a pending connection when the receiver was unknown.
It's an optimistic approach optmimized for modern beam nodes,
that expect real bitstrings and funs (since <R13).
Only erl_interface/jinterface lack this support.
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Conflicts:
erts/emulator/beam/bif.c
erts/emulator/beam/dist.c
erts/emulator/beam/dist.h
erts/emulator/beam/erl_bif_info.c
erts/emulator/beam/erl_node_tables.c
erts/emulator/beam/erl_node_tables.h
erts/emulator/beam/external.c
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The implementation is still hidden behind ERTS_ENABLE_LOCK_COUNT, and
all categories are still enabled by default, but the actual counting can be
toggled at will.
OTP-13170
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NIF resources was not handled in a thread-safe manner in the runtime
system without SMP support.
As a consequence of this fix, the following driver functions are now
thread-safe also in the runtime system without SMP support:
- driver_free_binary()
- driver_realloc_binary()
- driver_binary_get_refc()
- driver_binary_inc_refc()
- driver_binary_dec_refc()
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Instead of passing around a file descriptor
use a function pointer to facilitate more advanced
backend write logic such as size limitation or compression.
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* henrik/update-copyrightyear:
update copyright-year
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from future nodes.
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