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De-std::atomic Span::allocated_. #348

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De-std::atomic Span::allocated_. #348

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13 changes: 12 additions & 1 deletion tcmalloc/span.h
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Original file line number Diff line number Diff line change
Expand Up @@ -304,7 +304,18 @@ class ABSL_CACHELINE_ALIGNED Span final : public SpanList::Elem {
uint16_t embed_count_;
uint16_t freelist_;
};
std::atomic<uint16_t> allocated_; // Number of non-free objects
#ifdef TCMALLOC_INTERNAL_LEGACY_LOCKING
std::atomic<uint16_t>
#else
struct {
uint16_t value;

uint16_t load(std::memory_order) const { return value; }

void store(uint16_t v, std::memory_order) { value = v; }
}
#endif
allocated_; // Number of non-free objects
#ifndef TCMALLOC_INTERNAL_LEGACY_LOCKING
uint8_t cache_size_;
#else
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