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8207200: Committed > max memory usage when getting MemoryUsage

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Make sure that modification of memory usage variables are synchronized with returning them to Java.

Reviewed-by: sangheki, mchung
This commit is contained in:
Thomas Schatzl 2018-09-04 12:18:35 +02:00
parent a7d4df53fa
commit db7b4e20e1
10 changed files with 105 additions and 49 deletions
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src/hotspot/share/runtime/mutexLocker.hpp
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@ -94,6 +94,7 @@ extern Mutex* Shared_DirtyCardQ_lock; // Lock protecting dirty card
// non-Java threads.
extern Mutex* MarkStackFreeList_lock; // Protects access to the global mark stack free list.
extern Mutex* MarkStackChunkList_lock; // Protects access to the global mark stack chunk list.
extern Mutex* MonitoringSupport_lock; // Protects updates to the serviceability memory pools.
extern Mutex* ParGCRareEvent_lock; // Synchronizes various (rare) parallel GC ops.
extern Mutex* Compile_lock; // a lock held when Compilation is updating code (used to block CodeCache traversal, CHA updates, etc)
extern Monitor* MethodCompileQueue_lock; // a lock held when method compilations are enqueued, dequeued