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-rw-r--r--erts/emulator/beam/bif.tab1
-rw-r--r--erts/emulator/beam/erl_map.c16
-rw-r--r--erts/emulator/test/erts_debug_SUITE.erl6
-rw-r--r--erts/preloaded/ebin/erts_internal.beambin4276 -> 4456 bytes
-rw-r--r--erts/preloaded/src/erts_internal.erl9
5 files changed, 32 insertions, 0 deletions
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab
index 2d888862bf..fbdddf09db 100644
--- a/erts/emulator/beam/bif.tab
+++ b/erts/emulator/beam/bif.tab
@@ -157,6 +157,7 @@ bif erts_internal:binary_to_term/2
bif erts_internal:request_system_task/3
bif erts_internal:check_process_code/2
+bif erts_internal:map_to_tuple_keys/1
# inet_db support
bif erlang:port_set_data/2
diff --git a/erts/emulator/beam/erl_map.c b/erts/emulator/beam/erl_map.c
index fdd2d0c0f6..5e740aacdd 100644
--- a/erts/emulator/beam/erl_map.c
+++ b/erts/emulator/beam/erl_map.c
@@ -58,6 +58,8 @@
* - maps:size/1
* - maps:without/2
*
+ * DEBUG: for sharing calculation
+ * - erts_internal:map_to_tuple_keys/1
*/
/* erlang:map_size/1
@@ -819,3 +821,17 @@ int erts_validate_and_sort_map(map_t* mp)
}
return 1;
}
+
+/*
+ * erts_internal:map_to_tuple_keys/1
+ *
+ * Used in erts_debug:size/1
+ */
+
+BIF_RETTYPE erts_internal_map_to_tuple_keys_1(BIF_ALIST_1) {
+ if (is_map(BIF_ARG_1)) {
+ map_t *mp = (map_t*)map_val(BIF_ARG_1);
+ BIF_RET(mp->keys);
+ }
+ BIF_ERROR(BIF_P, BADARG);
+}
diff --git a/erts/emulator/test/erts_debug_SUITE.erl b/erts/emulator/test/erts_debug_SUITE.erl
index 87778dd0c2..e5c904cfb9 100644
--- a/erts/emulator/test/erts_debug_SUITE.erl
+++ b/erts/emulator/test/erts_debug_SUITE.erl
@@ -67,6 +67,9 @@ test_size(Config) when is_list(Config) ->
2 = do_test_size({[]}),
3 = do_test_size({a,b}),
7 = do_test_size({a,[b,c]}),
+ 8 = do_test_size(#{b => 2,c => 3}),
+ 4 = do_test_size(#{}),
+ 32 = do_test_size(#{b => 2,c => 3,txt => "hello world"}),
%% Test internal consistency of sizes, but without testing
%% exact sizes.
@@ -97,6 +100,9 @@ test_size(Config) when is_list(Config) ->
do_test_size({SimplestFun,SimplestFun},
2*FunSz0+do_test_size({a,b}),
FunSz0+do_test_size({a,b})),
+
+ M = id(#{ "atom" => first, i => 0}),
+ do_test_size([M,M#{ "atom" := other },M#{i := 42}],54,32),
ok.
do_test_size(Term) ->
diff --git a/erts/preloaded/ebin/erts_internal.beam b/erts/preloaded/ebin/erts_internal.beam
index d41c833e05..3d650aff74 100644
--- a/erts/preloaded/ebin/erts_internal.beam
+++ b/erts/preloaded/ebin/erts_internal.beam
Binary files differ
diff --git a/erts/preloaded/src/erts_internal.erl b/erts/preloaded/src/erts_internal.erl
index edcd50c77e..764d7730aa 100644
--- a/erts/preloaded/src/erts_internal.erl
+++ b/erts/preloaded/src/erts_internal.erl
@@ -31,6 +31,7 @@
-export([await_port_send_result/3]).
-export([binary_to_term/1, binary_to_term/2]).
-export([cmp_term/2]).
+-export([map_to_tuple_keys/1]).
-export([port_command/3, port_connect/2, port_close/1,
port_control/3, port_call/3, port_info/1, port_info/2]).
@@ -181,3 +182,11 @@ binary_to_term(_Binary, _Opts) ->
cmp_term(_A,_B) ->
erlang:nif_error(undefined).
+
+%% return the internal key tuple for map keys
+-spec map_to_tuple_keys(M) -> Keys when
+ M :: map(),
+ Keys :: tuple().
+
+map_to_tuple_keys(_M) ->
+ erlang:nif_error(undefined).