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authorLukas Larsson <[email protected]>2014-12-04 11:09:06 +0100
committerLukas Larsson <[email protected]>2014-12-19 10:39:52 +0100
commitffd0153e6dffcc29cf79d0191860047dba0438bb (patch)
tree31a0ced512b5b243caa5933c73aa4dc70d6c0c87 /erts/emulator/test
parente2a600341324d2ce3689119f8fd61b248702d79f (diff)
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erts: Improve crash dumps
This commit improves crash dumps in several ways: * Suspends schedulers to get a current snapshot * Dumps information about scheduler * Dumps stack trace of current running process (including Garbing processes)
Diffstat (limited to 'erts/emulator/test')
-rw-r--r--erts/emulator/test/bif_SUITE.erl33
1 files changed, 32 insertions, 1 deletions
diff --git a/erts/emulator/test/bif_SUITE.erl b/erts/emulator/test/bif_SUITE.erl
index fbc229bc53..fc9bdae0a0 100644
--- a/erts/emulator/test/bif_SUITE.erl
+++ b/erts/emulator/test/bif_SUITE.erl
@@ -20,6 +20,7 @@
-module(bif_SUITE).
-include_lib("test_server/include/test_server.hrl").
+-include_lib("kernel/include/file.hrl").
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
@@ -681,8 +682,38 @@ erlang_halt(Config) when is_list(Config) ->
{badrpc,nodedown} = rpc:call(N2, erlang, halt, [0]),
{ok,N3} = slave:start(H, halt_node3),
{badrpc,nodedown} = rpc:call(N3, erlang, halt, [0,[]]),
- ok.
+ % This test triggers a segfault when dumping a crash dump
+ % to make sure that we can handle it properly.
+ {ok,N4} = slave:start(H, halt_node4),
+ CrashDump = filename:join(proplists:get_value(priv_dir,Config),
+ "segfault_erl_crash.dump"),
+ true = rpc:call(N4, os, putenv, ["ERL_CRASH_DUMP",CrashDump]),
+ false = rpc:call(N4, erts_debug, set_internal_state,
+ [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, 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
+ {0,0} -> ct:fail("Could not find end marker in crash dump");
+ _ -> ok
+ end.
+
+wait_until_stable_size(_File,-10) ->
+ {error,enoent};
+wait_until_stable_size(File,PrevSz) ->
+ timer:sleep(250),
+ case file:read_file_info(File) of
+ {error,enoent} ->
+ 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,#file_info{size = NewSz }} ->
+ wait_until_stable_size(File,NewSz)
+ end.
%% Helpers