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7199092: NMT: NMT needs to deal overlapped virtual memory ranges

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Enhanced virtual memory tracking to track committed regions as well as reserved regions, so NMT now can generate virtual memory map.

Reviewed-by: acorn, coleenp
This commit is contained in:
Zhengyu Gu 2012-10-19 21:40:07 -04:00
parent 240b5c9329
commit 3e481cdd81
29 changed files with 800 additions and 364 deletions
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7
hotspot/src/share/vm/memory/allocation.hpp
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@ -144,8 +144,10 @@ enum MemoryType {
mtNMT = 0x0A00, // memory used by native memory tracking
mtChunk = 0x0B00, // chunk that holds content of arenas
mtJavaHeap = 0x0C00, // Java heap
mtDontTrack = 0x0D00, // memory we donot or cannot track
mt_number_of_types = 0x000C, // number of memory types
mtClassShared = 0x0D00, // class data sharing
mt_number_of_types = 0x000D, // number of memory types (mtDontTrack
// is not included as validate type)
mtDontTrack = 0x0E00, // memory we do not or cannot track
mt_masks = 0x7F00,
// object type mask
@ -342,7 +344,6 @@ protected:
public:
Arena();
Arena(size_t init_size);
Arena(Arena *old);
~Arena();
void destruct_contents();
char* hwm() const { return _hwm; }