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Use compare_exchange_weak instead of strong version

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I'm not sure if that makes any difference (at least on x86, it doesn't),
but this change is harmless, so I'm making this change.
This commit is contained in:
Rui Ueyama 2021-08-25 04:04:02 +00:00
parent be4f2f52b2
commit e4e618628f
3 changed files with 3 additions and 3 deletions
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2
concurrent-map.cc
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@ -51,7 +51,7 @@ ConcurrentMap<T>::insert(std::string_view key, u64 hash, const T &val) {
}
if (ptr == nullptr) {
if (!keys[idx].compare_exchange_strong(ptr, locked))
if (!keys[idx].compare_exchange_weak(ptr, locked))
continue;
new (values + idx) T(val);
sizes[idx] = key.size();

2
object-file.cc
View File

@ -833,7 +833,7 @@ void ObjectFile<E>::merge_visibility(Context<E> &ctx, Symbol<E> &sym,
u8 val = sym.visibility;
while (priority(visibility) < priority(val))
if (sym.visibility.compare_exchange_strong(val, visibility))
if (sym.visibility.compare_exchange_weak(val, visibility))
break;
}

2
output-chunks.cc
View File

@ -1170,7 +1170,7 @@ MergedSection<E>::insert(std::string_view data, u64 hash, i64 alignment) {
ASSERT(frag);
for (u16 cur = frag->alignment; cur < alignment;)
if (frag->alignment.compare_exchange_strong(cur, alignment))
if (frag->alignment.compare_exchange_weak(cur, alignment))
break;
return frag;
}