TSan exam: fixed data races and false positives in queues

[libcds.git] / cds / memory / michael / allocator.h

diff --git a/cds/memory/michael/allocator.h b/cds/memory/michael/allocator.h
index 5b14d48c2ff7eb54514b05c183f725ba26842c84..d82d10cd81405df022285d3d09f1872bafa2f7e0 100644 (file)
--- a/cds/memory/michael/allocator.h
+++ b/cds/memory/michael/allocator.h
@@ -1450,6 +1450,9 @@ namespace michael {
 
             static_assert( (sizeof(processor_heap) % c_nAlignment) == 0, "sizeof(processor_heap) error" );
 
+            // TSan false positive: a new descriptor will be linked further with release fence
+            CDS_TSAN_ANNOTATE_IGNORE_WRITES_BEGIN;
+
             pDesc = new( m_AlignedHeap.alloc( szTotal, c_nAlignment ) ) processor_desc;
 
             pDesc->pageHeaps = reinterpret_cast<page_heap *>( pDesc + 1 );
@@ -1474,6 +1477,7 @@ namespace michael {
                 else
                     pProcHeap->nPageIdx = pProcHeap->pSizeClass->nSBSizeIdx;
             }
+            CDS_TSAN_ANNOTATE_IGNORE_WRITES_END;
             return pDesc;
         }