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authorBjörn Gustavsson <[email protected]>2017-05-31 12:55:40 +0200
committerBjörn Gustavsson <[email protected]>2017-05-31 13:04:19 +0200
commitacd8571b35756c3fdc389807c34d80c9d44435e7 (patch)
tree1b60bbe5a064c3690b74f25d6a99317e5b76eb5f /erts/emulator
parentb182febe36aa63eb8290f24ba4b7932673a9a9bc (diff)
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Make sure that asynchronous replies are not lost
(First attempt to fix in 23f132d9ab776a.) If an synchronous GC was requested by calling: erlang:garbage_collect(Pid, [{async,Ref}]) the reply message could in certain circumstances be lost. The problem is that cleanup_sys_tasks() is never called if there are dirty tasks, but no other active system tasks. Also shorten the long waiting times in the test case binary_SUITE:trapping/1 to make it much more likely that the GC have not already finished when the process is killed.
Diffstat (limited to 'erts/emulator')
-rw-r--r--erts/emulator/beam/erl_process.c6
-rw-r--r--erts/emulator/test/binary_SUITE.erl14
2 files changed, 13 insertions, 7 deletions
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index d4385e3987..285fa05d63 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -13932,7 +13932,11 @@ erts_continue_exit_process(Process *p)
erts_set_gc_state(p, 1);
state = erts_smp_atomic32_read_acqb(&p->state);
- if (state & ERTS_PSFLG_ACTIVE_SYS) {
+ if (state & ERTS_PSFLG_ACTIVE_SYS
+#ifdef ERTS_DIRTY_SCHEDULERS
+ || p->dirty_sys_tasks
+#endif
+ ) {
if (cleanup_sys_tasks(p, state, CONTEXT_REDS) >= CONTEXT_REDS/2)
goto yield;
}
diff --git a/erts/emulator/test/binary_SUITE.erl b/erts/emulator/test/binary_SUITE.erl
index 355be7a36d..4d17276e5c 100644
--- a/erts/emulator/test/binary_SUITE.erl
+++ b/erts/emulator/test/binary_SUITE.erl
@@ -1358,17 +1358,19 @@ do_trapping(N, Bif, ArgFun) ->
io:format("N=~p: Do ~p ~s gc.\n", [N, Bif, case N rem 2 of 0 -> "with"; 1 -> "without" end]),
Pid = spawn(?MODULE,trapping_loop,[Bif, ArgFun, 1000, self()]),
receive ok -> ok end,
- receive after 100 -> ok end,
Ref = make_ref(),
case N rem 2 of
- 0 -> erlang:garbage_collect(Pid, [{async,Ref}]),
- receive after 100 -> ok end;
+ 0 ->
+ erlang:garbage_collect(Pid, [{async,Ref}]),
+ receive after 1 -> ok end;
1 -> void
end,
- exit(Pid,kill),
+ exit(Pid, kill),
case N rem 2 of
- 0 -> receive {garbage_collect, Ref, _} -> ok end;
- 1 -> void
+ 0 ->
+ receive {garbage_collect, Ref, _} -> ok end;
+ 1 ->
+ void
end,
receive after 1 -> ok end,
do_trapping(N-1, Bif, ArgFun).