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-rw-r--r--erts/emulator/test/hibernate_SUITE.erl9
1 files changed, 7 insertions, 2 deletions
diff --git a/erts/emulator/test/hibernate_SUITE.erl b/erts/emulator/test/hibernate_SUITE.erl
index a20f306e04..d65d0ff2fd 100644
--- a/erts/emulator/test/hibernate_SUITE.erl
+++ b/erts/emulator/test/hibernate_SUITE.erl
@@ -46,12 +46,17 @@ all() ->
basic(Config) when is_list(Config) ->
Ref = make_ref(),
Info = {self(),Ref},
- ExpectedHeapSz = erts_debug:size([Info]),
+ ExpectedHeapSz = expected_heap_size([Info]),
Child = spawn_link(fun() -> basic_hibernator(Info) end),
hibernate_wake_up(100, ExpectedHeapSz, Child),
Child ! please_quit_now,
ok.
+expected_heap_size(Term) ->
+ %% When hibernating, an extra word will be allocated on the stack
+ %% for a continuation pointer.
+ erts_debug:size(Term) + 1.
+
hibernate_wake_up(0, _, _) -> ok;
hibernate_wake_up(N, ExpectedHeapSz, Child) ->
{heap_size,Before} = process_info(Child, heap_size),
@@ -142,7 +147,7 @@ whats_up_calc(A1, A2, A3, A4, A5, A6, A7, A8, A9, Acc) ->
dynamic_call(Config) when is_list(Config) ->
Ref = make_ref(),
Info = {self(),Ref},
- ExpectedHeapSz = erts_debug:size([Info]),
+ ExpectedHeapSz = expected_heap_size([Info]),
Child = spawn_link(fun() -> ?MODULE:dynamic_call_hibernator(Info, hibernate) end),
hibernate_wake_up(100, ExpectedHeapSz, Child),
Child ! please_quit_now,