diff options
Diffstat (limited to 'bootstrap/lib/kernel/include/dist.hrl')
| -rw-r--r-- | bootstrap/lib/kernel/include/dist.hrl | 115 |
1 files changed, 81 insertions, 34 deletions
diff --git a/bootstrap/lib/kernel/include/dist.hrl b/bootstrap/lib/kernel/include/dist.hrl index 10460ba3e8..16320b64e9 100644 --- a/bootstrap/lib/kernel/include/dist.hrl +++ b/bootstrap/lib/kernel/include/dist.hrl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2021. All Rights Reserved. +%% Copyright Ericsson AB 1999-2022. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -22,43 +22,90 @@ %% Distribution capabilities flags (corresponds with dist.h). %% --define(DFLAG_PUBLISHED,1). --define(DFLAG_ATOM_CACHE,2). --define(DFLAG_EXTENDED_REFERENCES,4). --define(DFLAG_DIST_MONITOR,8). --define(DFLAG_FUN_TAGS,16#10). --define(DFLAG_DIST_MONITOR_NAME,16#20). --define(DFLAG_HIDDEN_ATOM_CACHE,16#40). --define(DFLAG_NEW_FUN_TAGS,16#80). --define(DFLAG_EXTENDED_PIDS_PORTS,16#100). --define(DFLAG_EXPORT_PTR_TAG,16#200). --define(DFLAG_BIT_BINARIES,16#400). --define(DFLAG_NEW_FLOATS,16#800). --define(DFLAG_UNICODE_IO,16#1000). --define(DFLAG_DIST_HDR_ATOM_CACHE,16#2000). --define(DFLAG_SMALL_ATOM_TAGS, 16#4000). --define(DFLAG_UTF8_ATOMS, 16#10000). --define(DFLAG_MAP_TAG, 16#20000). --define(DFLAG_BIG_CREATION, 16#40000). --define(DFLAG_SEND_SENDER, 16#80000). --define(DFLAG_BIG_SEQTRACE_LABELS, 16#100000). -%% -define(DFLAG_NO_MAGIC, 16#200000). %% Used internally only --define(DFLAG_EXIT_PAYLOAD, 16#400000). --define(DFLAG_FRAGMENTS, 16#00800000). --define(DFLAG_HANDSHAKE_23, 16#01000000). --define(DFLAG_RESERVED, 16#fe000000). --define(DFLAG_SPAWN, 16#100000000). --define(DFLAG_NAME_ME, 16#200000000). --define(DFLAG_V4_NC, 16#400000000). --define(DFLAG_ALIAS, 16#800000000). +-define(DFLAG_PUBLISHED, 16#01). +-define(DFLAG_ATOM_CACHE, 16#02). +-define(DFLAG_EXTENDED_REFERENCES, 16#04). +-define(DFLAG_DIST_MONITOR, 16#08). +-define(DFLAG_FUN_TAGS, 16#10). +-define(DFLAG_DIST_MONITOR_NAME, 16#20). +-define(DFLAG_HIDDEN_ATOM_CACHE, 16#40). +-define(DFLAG_NEW_FUN_TAGS, 16#80). +-define(DFLAG_EXTENDED_PIDS_PORTS, 16#100). +-define(DFLAG_EXPORT_PTR_TAG, 16#200). +-define(DFLAG_BIT_BINARIES, 16#400). +-define(DFLAG_NEW_FLOATS, 16#800). +-define(DFLAG_UNICODE_IO, 16#1000). +-define(DFLAG_DIST_HDR_ATOM_CACHE, 16#2000). +-define(DFLAG_SMALL_ATOM_TAGS, 16#4000). +-define(DFLAG_UTF8_ATOMS, 16#10000). +-define(DFLAG_MAP_TAG, 16#20000). +-define(DFLAG_BIG_CREATION, 16#40000). +-define(DFLAG_SEND_SENDER, 16#80000). +-define(DFLAG_BIG_SEQTRACE_LABELS, 16#100000). +%% -define(DFLAG_NO_MAGIC, 16#200000). %% Used internally only +-define(DFLAG_EXIT_PAYLOAD, 16#400000). +-define(DFLAG_FRAGMENTS, 16#00800000). +-define(DFLAG_HANDSHAKE_23, 16#01000000). +-define(DFLAG_UNLINK_ID, 16#02000000). +-define(DFLAG_MANDATORY_25_DIGEST, 16#04000000). +-define(DFLAG_RESERVED, 16#f8000000). + +%% Second 32-bit flag word. +-define(DFLAG_SPAWN, (16#01 bsl 32)). +-define(DFLAG_NAME_ME, (16#02 bsl 32)). +-define(DFLAG_V4_NC, (16#04 bsl 32)). +-define(DFLAG_ALIAS, (16#08 bsl 32)). + +%% The following flags are mandatory in OTP 25. OTP 25 and higher +%% will accept ?DFLAG_MANDATORY_25_DIGEST as a shorthand for all those +%% flags. +-define(MANDATORY_DFLAGS_25, + (?DFLAG_EXTENDED_REFERENCES bor + ?DFLAG_FUN_TAGS bor + ?DFLAG_EXTENDED_PIDS_PORTS bor + ?DFLAG_NEW_FUN_TAGS bor + ?DFLAG_EXPORT_PTR_TAG bor + ?DFLAG_BIT_BINARIES bor + ?DFLAG_NEW_FLOATS bor + ?DFLAG_UTF8_ATOMS bor + ?DFLAG_MAP_TAG bor + ?DFLAG_BIG_CREATION bor + ?DFLAG_HANDSHAKE_23)). %% Also update dflag2str() in ../src/dist_util.erl %% when adding flags... +-define(ERL_DIST_VER_6, 6). % OTP-23 at least --define(ERL_DIST_VER_5, 5). % OTP-22 or (much) older --define(ERL_DIST_VER_6, 6). % OTP-23 (or maybe newer?) - --define(ERL_DIST_VER_LOW, ?ERL_DIST_VER_5). +-define(ERL_DIST_VER_LOW, ?ERL_DIST_VER_6). -define(ERL_DIST_VER_HIGH, ?ERL_DIST_VER_6). +%%% +%%% To avoid having to extend the number of distribution flags from 64 +%%% to 128, a scheme for garbage collection of the flags was +%%% introduced in OTP 25. +%%% +%%% In OTP 25, ?DFLAG_MANDATORY_25_DIGEST was introduced as a synonym +%%% for the flags defined by ?MANDATORY_DFLAGS_25. OTP 25/26 will +%%% accept the old flags to support communication with 24 and earlier, +%%% as well as ?DFLAG_MANDATORY_25_DIGEST. +%%% +%%% OTP 27 will make ?DFLAG_MANDATORY_25_DIGEST mandatory, meaning that an +%%% OTP 27 node can only communicate with OTP 25 and higher. +%%% +%%% An OTP 27 node will also introduce the new flag +%%% ?DFLAG_MANDATORY_27_DIGEST: +%%% +%%% * If ?DFLAG_MANDATORY_27_DIGEST is set, it means that all bit +%%% numbers defined by ?MANDATORY_DFLAGS_25, as well as the bit +%%% number defined by ?DFLAG_MANDATORY_25_DIGEST and any other bits +%%% made mandatory in OTP 26/27, lose their previous meanings. New +%%% meanings can then be assigned to those bit numbers as +%%% needed. (This is for communication between nodes from OTP 27 and +%%% up.) +%%% +%%% * If ?DFLAG_MANDATORY_27_DIGEST is not set, then +%%% ?DFLAG_MANDATORY_25_DIGEST must be set and all bit numbers +%%% defined by ?MANDATORY_DFLAGS_25 are ignored. (This is for +%%% communication between an OTP 27 node and an OTP 25/26 node.) +%%% |