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| author | Rickard Green <rickard@erlang.org> | 2019-10-17 16:23:56 +0200 |
|---|---|---|
| committer | Rickard Green <rickard@erlang.org> | 2019-10-29 19:53:35 +0100 |
| commit | 4a59ebeb43184fb9dcdb3d2b4aeb454a2caed700 (patch) | |
| tree | e4a515c0082f5d0bbb5df5396264115004b01190 /erts/preloaded/src/erts_internal.erl | |
| parent | db6059a9217767a6e42e93cec05089c0ec977d20 (diff) | |
| download | erlang-4a59ebeb43184fb9dcdb3d2b4aeb454a2caed700.tar.gz | |
Fix release of literal areas
Literal areas could get prematurely removed and accessed from the
exit reason of a terminated process, or accessed from the heap of
a process executing dirty while terminating.
Diffstat (limited to 'erts/preloaded/src/erts_internal.erl')
| -rw-r--r-- | erts/preloaded/src/erts_internal.erl | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/erts/preloaded/src/erts_internal.erl b/erts/preloaded/src/erts_internal.erl index 26fb1458af..6bbbf63ba6 100644 --- a/erts/preloaded/src/erts_internal.erl +++ b/erts/preloaded/src/erts_internal.erl @@ -45,7 +45,7 @@ -export([check_process_code/3]). -export([check_dirty_process_code/2]). -export([is_process_executing_dirty/1]). --export([release_literal_area_switch/0]). +-export([release_literal_area_switch/0, wait_release_literal_area_switch/1]). -export([purge_module/2]). -export([flush_monitor_messages/3]). @@ -301,6 +301,15 @@ is_process_executing_dirty(_Pid) -> release_literal_area_switch() -> erlang:nif_error(undefined). +-spec wait_release_literal_area_switch(WaitMsg) -> 'true' | 'false' when + WaitMsg :: term(). + +wait_release_literal_area_switch(WaitMsg) -> + %% release_literal_area_switch() traps to here + %% when it needs to wait + receive WaitMsg -> ok end, + erts_internal:release_literal_area_switch(). + -spec purge_module(Module, Op) -> boolean() when Module :: module(), Op :: 'prepare' | 'prepare_on_load' | 'abort' | 'complete'. |