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authorSverker Eriksson <[email protected]>2016-11-22 14:37:31 +0100
committerSverker Eriksson <[email protected]>2016-11-22 14:37:31 +0100
commit491cd4c0c0a534ab89c3ebb4c413301c91c7167d (patch)
tree8859c2da401857dd280cf79917aea847b630b714 /erts/emulator/test/bif_SUITE.erl
parentdcc7f6b2901a632ff8398c1382c15eaabe562714 (diff)
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erts: Add env variable ERL_CRASH_DUMP_BYTES
to limit crash dump size
Diffstat (limited to 'erts/emulator/test/bif_SUITE.erl')
-rw-r--r--erts/emulator/test/bif_SUITE.erl29
1 files changed, 27 insertions, 2 deletions
diff --git a/erts/emulator/test/bif_SUITE.erl b/erts/emulator/test/bif_SUITE.erl
index d31399e4af..b8d89126fe 100644
--- a/erts/emulator/test/bif_SUITE.erl
+++ b/erts/emulator/test/bif_SUITE.erl
@@ -31,6 +31,7 @@
t_list_to_existing_atom/1,os_env/1,otp_7526/1,
binary_to_atom/1,binary_to_existing_atom/1,
atom_to_binary/1,min_max/1, erlang_halt/1,
+ erl_crash_dump_bytes/1,
is_builtin/1]).
suite() ->
@@ -43,6 +44,7 @@ all() ->
t_list_to_existing_atom, os_env, otp_7526,
display,
atom_to_binary, binary_to_atom, binary_to_existing_atom,
+ erl_crash_dump_bytes,
min_max, erlang_halt, is_builtin].
%% Uses erlang:display to test that erts_printf does not do deep recursion
@@ -664,7 +666,7 @@ erlang_halt(Config) when is_list(Config) ->
[available_internal_state, true]),
{badrpc,nodedown} = rpc:call(N4, erts_debug, set_internal_state,
[broken_halt, "Validate correct crash dump"]),
- ok = wait_until_stable_size(CrashDump,-1),
+ {ok,_} = wait_until_stable_size(CrashDump,-1),
{ok, Bin} = file:read_file(CrashDump),
case {string:str(binary_to_list(Bin),"\n=end\n"),
string:str(binary_to_list(Bin),"\r\n=end\r\n")} of
@@ -681,11 +683,34 @@ wait_until_stable_size(File,PrevSz) ->
wait_until_stable_size(File,PrevSz-1);
{ok,#file_info{size = PrevSz }} when PrevSz /= -1 ->
io:format("Crashdump file size was: ~p (~s)~n",[PrevSz,File]),
- ok;
+ {ok,PrevSz};
{ok,#file_info{size = NewSz }} ->
wait_until_stable_size(File,NewSz)
end.
+% Test erlang:halt with ERL_CRASH_DUMP_BYTES
+erl_crash_dump_bytes(Config) when is_list(Config) ->
+ Bytes = 1000,
+ CrashDump = do_limited_crash_dump(Config, Bytes),
+ {ok,ActualBytes} = wait_until_stable_size(CrashDump,-1),
+ true = ActualBytes < (Bytes + 100),
+
+ NoDump = do_limited_crash_dump(Config,0),
+ {error,enoent} = wait_until_stable_size(NoDump,-8),
+ ok.
+
+do_limited_crash_dump(Config, Bytes) ->
+ H = hostname(),
+ {ok,N} = slave:start(H, halt_node),
+ BytesStr = integer_to_list(Bytes),
+ CrashDump = filename:join(proplists:get_value(priv_dir,Config),
+ "erl_crash." ++ BytesStr ++ ".dump"),
+ true = rpc:call(N, os, putenv, ["ERL_CRASH_DUMP",CrashDump]),
+ true = rpc:call(N, os, putenv, ["ERL_CRASH_DUMP_BYTES",BytesStr]),
+ {badrpc,nodedown} = rpc:call(N, erlang, halt, ["Testing ERL_CRASH_DUMP_BYTES"]),
+ CrashDump.
+
+
is_builtin(_Config) ->
Exp0 = [{M,F,A} || {M,_} <- code:all_loaded(),
{F,A} <- M:module_info(exports)],