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authorDmytro Lytovchenko <[email protected]>2016-06-13 12:05:55 +0200
committerLukas Larsson <[email protected]>2016-08-12 13:39:03 +0200
commit58d8a3ac4d491c8cd962ac0839a56cd1a0e339f9 (patch)
treeee73059b660ab09d55e3b8bc7d4dd4bf53bb07ae /erts/emulator/test
parent451ca8e5ca10892342ee8627de7ea961a8f06df2 (diff)
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Option to erlang:garbage_collect to request minor (generational) GC
Note: Minor GC option is a hint, and GC may still decide to run fullsweep. Test case for major and minor gc on self Test case for major and minor gs on some other process + async gc test check docs fix
Diffstat (limited to 'erts/emulator/test')
-rw-r--r--erts/emulator/test/gc_SUITE.erl103
1 files changed, 101 insertions, 2 deletions
diff --git a/erts/emulator/test/gc_SUITE.erl b/erts/emulator/test/gc_SUITE.erl
index 8a600b7d9f..35dd147550 100644
--- a/erts/emulator/test/gc_SUITE.erl
+++ b/erts/emulator/test/gc_SUITE.erl
@@ -23,15 +23,26 @@
-module(gc_SUITE).
-include_lib("common_test/include/ct.hrl").
+-include_lib("eunit/include/eunit.hrl").
+
-export([all/0, suite/0]).
--export([grow_heap/1, grow_stack/1, grow_stack_heap/1, max_heap_size/1]).
+-export([
+ grow_heap/1,
+ grow_stack/1,
+ grow_stack_heap/1,
+ max_heap_size/1,
+ minor_major_gc_option_async/1,
+ minor_major_gc_option_self/1
+]).
suite() ->
[{ct_hooks,[ts_install_cth]}].
all() ->
- [grow_heap, grow_stack, grow_stack_heap, max_heap_size].
+ [grow_heap, grow_stack, grow_stack_heap, max_heap_size,
+ minor_major_gc_option_self,
+ minor_major_gc_option_async].
%% Produce a growing list of elements,
@@ -190,3 +201,91 @@ long_receive() ->
after 10000 ->
ok
end.
+
+minor_major_gc_option_self(_Config) ->
+ Endless = fun Endless() ->
+ receive
+ {gc, Type} -> erlang:garbage_collect(self(), [{type, Type}])
+ after 100 -> ok end,
+ Endless()
+ end,
+
+ %% Try as major, a test process will self-trigger GC
+ P1 = spawn(Endless),
+ erlang:garbage_collect(P1, []),
+ erlang:trace(P1, true, [garbage_collection]),
+ P1 ! {gc, major},
+ expect_trace_messages(P1, [gc_major_start, gc_major_end]),
+ erlang:trace(P1, false, [garbage_collection]),
+ erlang:exit(P1, kill),
+
+ %% Try as minor, a test process will self-trigger GC
+ P2 = spawn(Endless),
+ erlang:garbage_collect(P2, []),
+ erlang:trace(P2, true, [garbage_collection]),
+ P2 ! {gc, minor},
+ expect_trace_messages(P2, [gc_minor_start, gc_minor_end]),
+ erlang:trace(P2, false, [garbage_collection]),
+ erlang:exit(P2, kill).
+
+minor_major_gc_option_async(_Config) ->
+ Endless = fun Endless() ->
+ receive after 100 -> ok end,
+ Endless()
+ end,
+
+ %% Try with default option, must be major gc
+ P1 = spawn(Endless),
+ erlang:garbage_collect(P1, []),
+ erlang:trace(P1, true, [garbage_collection]),
+ erlang:garbage_collect(P1, []),
+ expect_trace_messages(P1, [gc_major_start, gc_major_end]),
+ erlang:trace(P1, false, [garbage_collection]),
+ erlang:exit(P1, kill),
+
+ %% Try with the 'major' type
+ P2 = spawn(Endless),
+ erlang:garbage_collect(P2, []),
+ erlang:trace(P2, true, [garbage_collection]),
+ erlang:garbage_collect(P2, [{type, major}]),
+ expect_trace_messages(P2, [gc_major_start, gc_major_end]),
+ erlang:trace(P2, false, [garbage_collection]),
+ erlang:exit(P2, kill),
+
+ %% Try with 'minor' option, once
+ P3 = spawn(Endless),
+ erlang:garbage_collect(P3, []),
+ erlang:trace(P3, true, [garbage_collection]),
+ erlang:garbage_collect(P3, [{type, minor}]),
+ expect_trace_messages(P3, [gc_minor_start, gc_minor_end]),
+ erlang:trace(P3, false, [garbage_collection]),
+ erlang:exit(P3, kill),
+
+ %% Try with 'minor' option, once, async
+ P4 = spawn(Endless),
+ Ref = erlang:make_ref(),
+ erlang:garbage_collect(P4, []),
+ erlang:trace(P4, true, [garbage_collection]),
+ ?assertEqual(async,
+ erlang:garbage_collect(P4, [{type, minor}, {async, Ref}])),
+ expect_trace_messages(P4, [gc_minor_start, gc_minor_end]),
+ erlang:trace(P4, false, [garbage_collection]),
+ receive {garbage_collect, Ref, true} -> ok;
+ Other4 -> ct:pal("Unexpected message: ~p~n"
+ ++ "while waiting for async gc result", [Other4])
+ after 2000 -> ?assert(false)
+ end,
+ erlang:exit(P4, kill).
+
+%% Given a list of atoms, trace tags - receives messages and checks if they are
+%% trace events, and if the tag matches. Else will crash failing the test.
+expect_trace_messages(_Pid, []) -> ok;
+expect_trace_messages(Pid, [Tag | TraceTags]) ->
+ receive
+ {trace, Pid, Tag, _Data} -> ok;
+ AnythingElse ->
+ ct:pal("Unexpected message: ~p~nWhile expected {trace, _, ~p, _}",
+ [AnythingElse, Tag]),
+ ?assert(false)
+ end,
+ expect_trace_messages(Pid, TraceTags).