diff options
Diffstat (limited to 'erts/emulator/test')
| -rw-r--r-- | erts/emulator/test/process_SUITE.erl | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/erts/emulator/test/process_SUITE.erl b/erts/emulator/test/process_SUITE.erl index 97aa5e573e..bfd1e78bf0 100644 --- a/erts/emulator/test/process_SUITE.erl +++ b/erts/emulator/test/process_SUITE.erl @@ -41,6 +41,7 @@ process_info_2_list/1, process_info_lock_reschedule/1, process_info_lock_reschedule2/1, process_info_lock_reschedule3/1, + process_info_garbage_collection/1, bump_reductions/1, low_prio/1, binary_owner/1, yield/1, yield2/1, process_status_exiting/1, otp_4725/1, bad_register/1, garbage_collect/1, otp_6237/1, @@ -75,7 +76,9 @@ all() -> process_info_other_dist_msg, process_info_2_list, process_info_lock_reschedule, process_info_lock_reschedule2, - process_info_lock_reschedule3, process_status_exiting, + process_info_lock_reschedule3, + process_info_garbage_collection, + process_status_exiting, bump_reductions, low_prio, yield, yield2, otp_4725, bad_register, garbage_collect, process_info_messages, process_flag_badarg, process_flag_heap_size, @@ -932,6 +935,48 @@ start_spawner() -> stop_spawner() -> ok. +%% Tests erlang:process_info(Pid, garbage_collection_info) +process_info_garbage_collection(_Config) -> + Parent = self(), + Pid = spawn_link( + fun() -> + receive go -> ok end, + (fun F(0) -> + Parent ! deep, + receive ok -> ok end, + []; + F(N) -> + timer:sleep(1), + [lists:seq(1,100) | F(N-1)] + end)(1000), + Parent ! shallow, + receive done -> ok end + end), + {garbage_collection_info, Before} = + erlang:process_info(Pid, garbage_collection_info), + Pid ! go, receive deep -> ok end, + {_, Deep} = erlang:process_info(Pid, garbage_collection_info), + Pid ! ok, receive shallow -> ok end, + {_, After} = erlang:process_info(Pid, garbage_collection_info), + Pid ! done, + + %% Do some general checks to see if everything seems to be roughly correct + ct:log("Before: ~p",[Before]), + ct:log("Deep: ~p",[Deep]), + ct:log("After: ~p",[After]), + + %% Check stack_size + true = proplists:get_value(stack_size, Before) < proplists:get_value(stack_size, Deep), + true = proplists:get_value(stack_size, After) < proplists:get_value(stack_size, Deep), + + %% Check used heap size + true = proplists:get_value(heap_size, Before) + proplists:get_value(old_heap_size, Before) + < proplists:get_value(heap_size, Deep) + proplists:get_value(old_heap_size, Deep), + true = proplists:get_value(heap_size, Before) + proplists:get_value(old_heap_size, Before) + < proplists:get_value(heap_size, After) + proplists:get_value(old_heap_size, After), + + ok. + %% Tests erlang:bump_reductions/1. bump_reductions(Config) when is_list(Config) -> erlang:garbage_collect(), |