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Fix a benign data-race in Chan reported by ocaml-tsan #103

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merged 1 commit into from
Apr 29, 2023
Merged

Fix a benign data-race in Chan reported by ocaml-tsan #103

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6 changes: 3 additions & 3 deletions lib/chan.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -86,8 +86,8 @@ let rec send' {buffer_size; contents} v ~polling =
let new_contents = Empty {receivers= receivers'} in
if Atomic.compare_and_set contents old_contents new_contents
then begin
r := Some v;
Mutex.lock mc.mutex;
r := Some v;
Mutex.unlock mc.mutex;
Condition.broadcast mc.condition;
true
Expand Down Expand Up @@ -192,8 +192,8 @@ let rec recv' {buffer_size; contents} ~polling =
in
if Atomic.compare_and_set contents old_contents new_contents
then begin
c := Notified;
Mutex.lock mc.mutex;
c := Notified;
Mutex.unlock mc.mutex;
Condition.broadcast mc.condition;
Some m
Expand All @@ -206,8 +206,8 @@ let rec recv' {buffer_size; contents} ~polling =
in
if Atomic.compare_and_set contents old_contents new_contents
then begin
sc := Notified;
Mutex.lock mc.mutex;
sc := Notified;
Mutex.unlock mc.mutex;
Condition.broadcast mc.condition;
Some m
Expand Down