8338583: NMT: Malloc overhead is calculated incorrectly
Reviewed-by: azafari, yan, gziemski
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083b980831
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fb70325877
src/hotspot/share/nmt
@ -127,6 +127,7 @@ public:
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inline MallocHeader(size_t size, MemTag mem_tag, uint32_t mst_marker);
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inline static size_t malloc_overhead() { return sizeof(MallocHeader) + sizeof(uint16_t); }
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inline size_t size() const { return _size; }
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inline MemTag mem_tag() const { return _mem_tag; }
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inline uint32_t mst_marker() const { return _mst_marker; }
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@ -166,7 +166,7 @@ class MallocMemorySnapshot {
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}
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inline size_t malloc_overhead() const {
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return _all_mallocs.count() * sizeof(MallocHeader);
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return _all_mallocs.count() * MallocHeader::malloc_overhead();
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}
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// Total malloc invocation count
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@ -269,7 +269,7 @@ class MallocTracker : AllStatic {
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// The overhead that is incurred by switching on NMT (we need, per malloc allocation,
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// space for header and 16-bit footer)
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static const size_t overhead_per_malloc = sizeof(MallocHeader) + sizeof(uint16_t);
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static inline size_t overhead_per_malloc() { return MallocHeader::malloc_overhead(); }
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// Parameter name convention:
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// memblock : the beginning address for user data
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@ -72,7 +72,7 @@ class MemTracker : AllStatic {
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// Per-malloc overhead incurred by NMT, depending on the current NMT level
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static size_t overhead_per_malloc() {
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return enabled() ? MallocTracker::overhead_per_malloc : 0;
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return enabled() ? MallocTracker::overhead_per_malloc() : 0;
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}
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static inline void* record_malloc(void* mem_base, size_t size, MemTag mem_tag,
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