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6916968: CMS: freeList.cpp:304 assert(_allocation_stats.prevSweep() + ..., "Conservation Principle")

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Fix assert and adjust demand volume computation by adding missing factor.

Reviewed-by: jmasa, tonyp
This commit is contained in:
Y. Srinivas Ramakrishna 2011-06-20 09:42:26 -07:00
parent 937d6ded89
commit 45f42598c1
2 changed files with 24 additions and 9 deletions
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17
hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/freeList.cpp
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@ -300,8 +300,21 @@ void FreeList::verify_stats() const {
// dictionary for example, this might be the first block and
// in that case there would be no place that we could record
// the stats (which are kept in the block itself).
assert(_allocation_stats.prevSweep() + _allocation_stats.splitBirths() + 1 // Total Stock + 1
>= _allocation_stats.splitDeaths() + (ssize_t)count(), "Conservation Principle");
assert((_allocation_stats.prevSweep() + _allocation_stats.splitBirths()
+ _allocation_stats.coalBirths() + 1) // Total Production Stock + 1
>= (_allocation_stats.splitDeaths() + _allocation_stats.coalDeaths()
+ (ssize_t)count()), // Total Current Stock + depletion
err_msg("FreeList " PTR_FORMAT " of size " SIZE_FORMAT
" violates Conservation Principle: "
"prevSweep(" SIZE_FORMAT ")"
" + splitBirths(" SIZE_FORMAT ")"
" + coalBirths(" SIZE_FORMAT ") + 1 >= "
" splitDeaths(" SIZE_FORMAT ")"
" coalDeaths(" SIZE_FORMAT ")"
" + count(" SSIZE_FORMAT ")",
this, _size, _allocation_stats.prevSweep(), _allocation_stats.splitBirths(),
_allocation_stats.splitBirths(), _allocation_stats.splitDeaths(),
_allocation_stats.coalDeaths(), count()));
}
void FreeList::assert_proper_lock_protection_work() const {