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fast-path no-op gc as well

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Aleksey Kladov 2019-01-29 19:41:15 +03:00
parent f9cae4f2eb
commit e3c07b010a
1 changed files with 3 additions and 2 deletions
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5
src/derived.rs
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@ -948,6 +948,7 @@ where
map_write.clear();
return;
},
(DiscardIf::Never, _) | (_, DiscardWhat::Nothing) => return,
_ => {}
}
map_write.retain(|key, query_state| {
@ -980,10 +981,10 @@ where
// when we read `revision_now`.
assert!(memo.verified_at <= revision_now);
match strategy.discard_if {
DiscardIf::Never => true,
DiscardIf::Never => unreachable!(),
DiscardIf::Outdated if memo.verified_at == revision_now => true,
DiscardIf::Outdated | DiscardIf::Always => match strategy.discard_what {
DiscardWhat::Nothing => true,
DiscardWhat::Nothing => unreachable!(),
DiscardWhat::Values => {
memo.value = None;
true