[compiler-rt] [scudo] Refactor store() and retrieve(). (PR #102024)

[via llvm-commits]

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@@ -321,28 +324,28 @@ template <typename Config> class MapAllocatorCache {
     } while (0);
 
     for (MemMapT &EvictMemMap : EvictionMemMaps)
-      EvictMemMap.unmap(EvictMemMap.getBase(), EvictMemMap.getCapacity());
+      unmap(EvictMemMap);
 
     if (Interval >= 0) {
       // TODO: Add ReleaseToOS logic to LRU algorithm
       releaseOlderThan(Time - static_cast<u64>(Interval) * 1000000);
     }
   }
 
-  bool retrieve(Options Options, uptr Size, uptr Alignment, uptr HeadersSize,
-                LargeBlock::Header **H, bool *Zeroed) EXCLUDES(Mutex) {
+  CachedBlock retrieve(uptr Size, uptr Alignment, uptr HeadersSize,
+                       uptr &EntryHeaderPos) EXCLUDES(Mutex) {
     const uptr PageSize = getPageSizeCached();
     // 10% of the requested size proved to be the optimal choice for
     // retrieving cached blocks after testing several options.
     constexpr u32 FragmentedBytesDivisor = 10;
     bool Found = false;
     CachedBlock Entry;
-    uptr EntryHeaderPos = 0;
+    EntryHeaderPos = 0;
     {
       ScopedLock L(Mutex);
       CallsToRetrieve++;
       if (EntriesCount == 0)
-        return false;
+        return Entry;
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ChiaHungDuan wrote:

return {}

https://github.com/llvm/llvm-project/pull/102024