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6711316: Open source the Garbage-First garbage collector

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First mercurial integration of the code for the Garbage-First garbage collector.

Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
This commit is contained in:
Y. Srinivas Ramakrishna 2008-06-05 15:57:56 -07:00
parent 39463bb3fc
commit 18f3386a98
215 changed files with 36088 additions and 1249 deletions
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18
hotspot/src/share/vm/oops/markOop.hpp
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@ -216,11 +216,7 @@ class markOopDesc: public oopDesc {
static markOop INFLATING() { return (markOop) 0; } // inflate-in-progress
// Should this header be preserved during GC?
bool must_be_preserved(oop obj_containing_mark) const {
if (!UseBiasedLocking)
return (!is_unlocked() || !has_no_hash());
return must_be_preserved_with_bias(obj_containing_mark);
}
inline bool must_be_preserved(oop obj_containing_mark) const;
inline bool must_be_preserved_with_bias(oop obj_containing_mark) const;
// Should this header (including its age bits) be preserved in the
@ -240,22 +236,14 @@ class markOopDesc: public oopDesc {
// observation is that promotion failures are quite rare and
// reducing the number of mark words preserved during them isn't a
// high priority.
bool must_be_preserved_for_promotion_failure(oop obj_containing_mark) const {
if (!UseBiasedLocking)
return (this != prototype());
return must_be_preserved_with_bias_for_promotion_failure(obj_containing_mark);
}
inline bool must_be_preserved_for_promotion_failure(oop obj_containing_mark) const;
inline bool must_be_preserved_with_bias_for_promotion_failure(oop obj_containing_mark) const;
// Should this header be preserved during a scavenge where CMS is
// the old generation?
// (This is basically the same body as must_be_preserved_for_promotion_failure(),
// but takes the klassOop as argument instead)
bool must_be_preserved_for_cms_scavenge(klassOop klass_of_obj_containing_mark) const {
if (!UseBiasedLocking)
return (this != prototype());
return must_be_preserved_with_bias_for_cms_scavenge(klass_of_obj_containing_mark);
}
inline bool must_be_preserved_for_cms_scavenge(klassOop klass_of_obj_containing_mark) const;
inline bool must_be_preserved_with_bias_for_cms_scavenge(klassOop klass_of_obj_containing_mark) const;
// WARNING: The following routines are used EXCLUSIVELY by