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-rw-r--r--erts/emulator/beam/code_ix.h4
-rw-r--r--erts/emulator/test/bs_construct_SUITE.erl42
2 files changed, 41 insertions, 5 deletions
diff --git a/erts/emulator/beam/code_ix.h b/erts/emulator/beam/code_ix.h
index bc10e956f5..e2bd0da112 100644
--- a/erts/emulator/beam/code_ix.h
+++ b/erts/emulator/beam/code_ix.h
@@ -18,7 +18,7 @@
*/
/* Description:
- * This is the interface that facilitate changing the beam code
+ * This is the interface that facilitates changing the beam code
* (load,upgrade,delete) while allowing executing Erlang processes to
* access the code without any locks or other expensive memory barriers.
*
@@ -35,7 +35,7 @@
* The third code index is not explicitly used. It can be thought of as
* the "previous active" or the "next staging" index. It is needed to make
* sure that we do not reuse a code index for staging until we are sure
- * that no executing BIFs are still referring it.
+ * that no executing BIFs are still referencing it.
* We could get by with only two (0 and 1), but that would require that we
* must wait for all schedulers to re-schedule before each code change
* operation can start staging.
diff --git a/erts/emulator/test/bs_construct_SUITE.erl b/erts/emulator/test/bs_construct_SUITE.erl
index 9c88803fea..123952d01d 100644
--- a/erts/emulator/test/bs_construct_SUITE.erl
+++ b/erts/emulator/test/bs_construct_SUITE.erl
@@ -547,11 +547,47 @@ huge_float_check({'EXIT',{badarg,_}}) -> ok.
huge_binary(Config) when is_list(Config) ->
?line 16777216 = size(<<0:(id(1 bsl 26)),(-1):(id(1 bsl 26))>>),
?line garbage_collect(),
- ?line id(<<0:((1 bsl 32)-1)>>),
+ {Shift,Return} = case free_mem() of
+ undefined -> {32,ok};
+ Mb when Mb > 600 -> {32,ok};
+ Mb when Mb > 300 -> {31,"Limit huge binaries to 256 Mb"};
+ _ -> {30,"Limit huge binary to 128 Mb"}
+ end,
?line garbage_collect(),
- ?line id(<<0:(id((1 bsl 32)-1))>>),
+ ?line id(<<0:((1 bsl Shift)-1)>>),
?line garbage_collect(),
- ok.
+ ?line id(<<0:(id((1 bsl Shift)-1))>>),
+ ?line garbage_collect(),
+ case Return of
+ ok -> ok;
+ Comment -> {comment, Comment}
+ end.
+
+free_mem() ->
+ Cmd = "uname; free",
+ Output = string:tokens(os:cmd(Cmd), "\n"),
+ io:format("Output from command ~p\n~p\n",[Cmd,Output]),
+ case Output of
+ [OS, ColumnNames, Values | _] ->
+ case string:str(OS,"Linux") of
+ 0 ->
+ io:format("Unknown OS\n",[]),
+ undefined;
+ _ ->
+ case {string:tokens(ColumnNames, " \t"),
+ string:tokens(Values, " \t")} of
+ {[_,_,"free"|_],["Mem:",_,_,FreeKb|_]} ->
+ list_to_integer(FreeKb) div 1024;
+ _ ->
+ io:format("Failed to parse output from 'free':\n",[]),
+ undefined
+ end
+ end;
+ _ ->
+ io:format("Too few lines in output\n",[]),
+ undefined
+ end.
+
system_limit(Config) when is_list(Config) ->
WordSize = erlang:system_info(wordsize),