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HCOLL-387 add a way to limit hash lookup slots to 4 bytes

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leventov
2015-09-23 02:02:36 +03:00
parent b113118707
commit 8870b05d86
6 changed files with 57 additions and 12 deletions
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src/main/java/net/openhft/chronicle/hash/impl/VanillaChronicleHash.java
+4
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@@ -187,6 +187,10 @@ public abstract class VanillaChronicleHash<K, KI, MKI extends MetaBytesInterop<K
segmentHashLookupKeyBits = keyBits(entriesPerSegment, segmentHashLookupValueBits);
segmentHashLookupEntrySize =
entrySize(segmentHashLookupKeyBits, segmentHashLookupValueBits);
if (!privateAPI.aligned64BitMemoryOperationsAtomic() && segmentHashLookupEntrySize > 4) {
throw new IllegalStateException("aligned64BitMemoryOperationsAtomic() == false, " +
"but hash lookup slot is " + segmentHashLookupEntrySize);
}
segmentHashLookupCapacity = CompactOffHeapLinearHashTable.capacityFor(entriesPerSegment);
segmentHashLookupInnerSize = segmentHashLookupCapacity * segmentHashLookupEntrySize;
segmentHashLookupOuterSize = CACHE_LINES.align(segmentHashLookupInnerSize, BYTES);