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util: better match true std::atomic semantics

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This commit is contained in:
Michael Scire
2021-10-20 11:02:17 -07:00
parent c6d7174dd3
commit aed9d3f535
12 changed files with 102 additions and 53 deletions
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8
libraries/libmesosphere/include/mesosphere/kern_k_dynamic_slab_heap.hpp
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@@ -66,7 +66,7 @@ namespace ams::kern {
KSlabHeapImpl::Free(allocated + i);
}
m_count.FetchAdd(sizeof(PageBuffer) / sizeof(T));
m_count += sizeof(PageBuffer) / sizeof(T);
}
}
@@ -89,7 +89,7 @@ namespace ams::kern {
for (size_t i = 1; i < sizeof(PageBuffer) / sizeof(T); i++) {
KSlabHeapImpl::Free(allocated + i);
}
m_count.FetchAdd(sizeof(PageBuffer) / sizeof(T));
m_count += sizeof(PageBuffer) / sizeof(T);
}
}
}
@@ -99,7 +99,7 @@ namespace ams::kern {
std::construct_at(allocated);
/* Update our tracking. */
size_t used = m_used.FetchAdd(1) + 1;
const size_t used = ++m_used;
size_t peak = m_peak.Load();
while (peak < used) {
if (m_peak.CompareExchangeWeak<std::memory_order_relaxed>(peak, used)) {
@@ -113,7 +113,7 @@ namespace ams::kern {
ALWAYS_INLINE void Free(T *t) {
KSlabHeapImpl::Free(t);
m_used.FetchSub(1);
--m_used;
}
};