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2202-erts-add-erlang-system_info-atom_count.patch
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File 2202-erts-add-erlang-system_info-atom_count.patch of Package erlang
From ca7e946af9c2fdc86c1c74259ee7b6881c5aec1e Mon Sep 17 00:00:00 2001 From: Mikael Pettersson <mikpelinux@gmail.com> Date: Mon, 19 Dec 2016 11:17:05 +0100 Subject: [PATCH] erts: add erlang:system_info(atom_count) --- erts/doc/src/erlang.xml | 19 +++++++++++++------ erts/emulator/beam/erl_bif_info.c | 3 +++ erts/emulator/test/system_info_SUITE.erl | 15 +++++++++++++-- erts/preloaded/src/erlang.erl | 1 + 4 files changed, 30 insertions(+), 8 deletions(-) diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index 3dad09365..40ddcb854 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -7224,8 +7224,8 @@ ok </func> <func> - <name name="system_info" arity="1" clause_i="11"/> <name name="system_info" arity="1" clause_i="12"/> + <name name="system_info" arity="1" clause_i="13"/> <fsummary>Information about the CPU topology of the system.</fsummary> <type name="cpu_topology"/> <type name="level_entry"/> @@ -7325,12 +7325,12 @@ ok </func> <func> - <name name="system_info" arity="1" clause_i="28"/> <name name="system_info" arity="1" clause_i="29"/> - <name name="system_info" arity="1" clause_i="37"/> + <name name="system_info" arity="1" clause_i="30"/> <name name="system_info" arity="1" clause_i="38"/> <name name="system_info" arity="1" clause_i="39"/> <name name="system_info" arity="1" clause_i="40"/> + <name name="system_info" arity="1" clause_i="41"/> <fsummary>Information about the default process heap settings.</fsummary> <type name="message_queue_data"/> <type name="max_heap_size"/> @@ -7408,7 +7408,7 @@ ok <name name="system_info" arity="1" clause_i="8"/> <name name="system_info" arity="1" clause_i="9"/> <name name="system_info" arity="1" clause_i="10"/> - <name name="system_info" arity="1" clause_i="13"/> + <name name="system_info" arity="1" clause_i="11"/> <name name="system_info" arity="1" clause_i="14"/> <name name="system_info" arity="1" clause_i="15"/> <name name="system_info" arity="1" clause_i="16"/> @@ -7423,14 +7423,14 @@ ok <name name="system_info" arity="1" clause_i="25"/> <name name="system_info" arity="1" clause_i="26"/> <name name="system_info" arity="1" clause_i="27"/> - <name name="system_info" arity="1" clause_i="30"/> + <name name="system_info" arity="1" clause_i="28"/> <name name="system_info" arity="1" clause_i="31"/> <name name="system_info" arity="1" clause_i="32"/> <name name="system_info" arity="1" clause_i="33"/> <name name="system_info" arity="1" clause_i="34"/> <name name="system_info" arity="1" clause_i="35"/> <name name="system_info" arity="1" clause_i="36"/> - <name name="system_info" arity="1" clause_i="41"/> + <name name="system_info" arity="1" clause_i="37"/> <name name="system_info" arity="1" clause_i="42"/> <name name="system_info" arity="1" clause_i="43"/> <name name="system_info" arity="1" clause_i="44"/> @@ -7460,6 +7460,7 @@ ok <name name="system_info" arity="1" clause_i="68"/> <name name="system_info" arity="1" clause_i="69"/> <name name="system_info" arity="1" clause_i="70"/> + <name name="system_info" arity="1" clause_i="71"/> <fsummary>Information about the system.</fsummary> <desc> <p>Returns various information about the current system @@ -7471,6 +7472,12 @@ ok <p>See <seealso marker="#system_info_allocator_tags"> above</seealso>.</p> </item> + <tag><c>atom_count</c></tag> + <item> + <marker id="system_info_atom_count"></marker> + <p>Returns the number of atoms currently existing at the + local node. The value is given as an integer.</p> + </item> <tag><c>atom_limit</c></tag> <item> <marker id="system_info_atom_limit"></marker> diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c index 0e0842e13..9a3b78ae8 100644 --- a/erts/emulator/beam/erl_bif_info.c +++ b/erts/emulator/beam/erl_bif_info.c @@ -2863,6 +2863,9 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1) else if (ERTS_IS_ATOM_STR("atom_limit",BIF_ARG_1)) { BIF_RET(make_small(erts_get_atom_limit())); } + else if (ERTS_IS_ATOM_STR("atom_count",BIF_ARG_1)) { + BIF_RET(make_small(atom_table_size())); + } else if (ERTS_IS_ATOM_STR("tolerant_timeofday",BIF_ARG_1)) { if (erts_has_time_correction() && erts_time_offset_state() == ERTS_TIME_OFFSET_FINAL) { diff --git a/erts/emulator/test/system_info_SUITE.erl b/erts/emulator/test/system_info_SUITE.erl index 3d9e74472..6a772bf7c 100644 --- a/erts/emulator/test/system_info_SUITE.erl +++ b/erts/emulator/test/system_info_SUITE.erl @@ -36,7 +36,8 @@ -export([all/0, suite/0]). -export([process_count/1, system_version/1, misc_smoke_tests/1, - heap_size/1, wordsize/1, memory/1, ets_limit/1, atom_limit/1]). + heap_size/1, wordsize/1, memory/1, ets_limit/1, atom_limit/1, + atom_count/1]). suite() -> [{ct_hooks,[ts_install_cth]}, @@ -44,7 +45,7 @@ suite() -> all() -> [process_count, system_version, misc_smoke_tests, - heap_size, wordsize, memory, ets_limit, atom_limit]. + heap_size, wordsize, memory, ets_limit, atom_limit, atom_count]. %%% %%% The test cases ------------------------------------------------------------- @@ -550,3 +551,13 @@ get_atom_limit(Config, AtomsMax) -> end, stop_node(Node), Res. + +%% Verify that system_info(atom_count) works. +atom_count(Config) when is_list(Config) -> + Limit = erlang:system_info(atom_limit), + Count1 = erlang:system_info(atom_count), + list_to_atom(integer_to_list(erlang:unique_integer())), + Count2 = erlang:system_info(atom_count), + true = Limit >= Count2, + true = Count2 > Count1, + ok. diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl index 15c3e0165..6ca0a4c16 100644 --- a/erts/preloaded/src/erlang.erl +++ b/erts/preloaded/src/erlang.erl @@ -2532,6 +2532,7 @@ tuple_to_list(_Tuple) -> Alloc :: atom(); ({allocator_sizes, Alloc}) -> [_] when %% More or less anything Alloc :: atom(); + (atom_count) -> pos_integer(); (atom_limit) -> pos_integer(); (build_type) -> opt | debug | purify | quantify | purecov | gcov | valgrind | gprof | lcnt | frmptr; -- 2.11.0
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