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4957990: Perm heap bloat in JVM

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Treat ProfileData in MDO's as a source of weak, not strong, roots. Fixes the bug for stop-world collection -- the case of concurrent collection will be fixed separately.

Reviewed-by: jcoomes, jmasa, kvn, never
This commit is contained in:
Y. Srinivas Ramakrishna 2009-09-02 00:04:29 -07:00
parent 2491751525
commit c6763b5bad
27 changed files with 385 additions and 65 deletions
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11
hotspot/src/share/vm/gc_interface/collectedHeap.hpp
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@ -239,6 +239,9 @@ class CollectedHeap : public CHeapObj {
return p == NULL || is_in_closed_subset(p);
}
// XXX is_permanent() and is_in_permanent() should be better named
// to distinguish one from the other.
// Returns "TRUE" if "p" is allocated as "permanent" data.
// If the heap does not use "permanent" data, returns the same
// value is_in_reserved() would return.
@ -247,13 +250,17 @@ class CollectedHeap : public CHeapObj {
// space). If you need the more conservative answer use is_permanent().
virtual bool is_in_permanent(const void *p) const = 0;
bool is_in_permanent_or_null(const void *p) const {
return p == NULL || is_in_permanent(p);
}
// Returns "TRUE" if "p" is in the committed area of "permanent" data.
// If the heap does not use "permanent" data, returns the same
// value is_in() would return.
virtual bool is_permanent(const void *p) const = 0;
bool is_in_permanent_or_null(const void *p) const {
return p == NULL || is_in_permanent(p);
bool is_permanent_or_null(const void *p) const {
return p == NULL || is_permanent(p);
}
// Returns "TRUE" if "p" is a method oop in the