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7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end

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What the synopsis says.

Reviewed-by: jwilhelm, iveresov, johnc
This commit is contained in:
Antonios Printezis 2011-03-29 22:36:16 -04:00
parent c2275649b7
commit 349d820dd1
5 changed files with 69 additions and 4 deletions
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6
hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
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@ -3879,7 +3879,7 @@ void G1CollectedHeap::release_gc_alloc_regions(bool totally) {
if (r->is_empty()) {
// We didn't actually allocate anything in it; let's just put
// it back on the free list.
_free_list.add_as_tail(r);
_free_list.add_as_head(r);
} else if (_retain_gc_alloc_region[ap] && !totally) {
// retain it so that we can use it at the beginning of the next GC
_retained_gc_alloc_regions[ap] = r;
@ -5013,7 +5013,7 @@ void G1CollectedHeap::free_region(HeapRegion* hr,
*pre_used += hr->used();
hr->hr_clear(par, true /* clear_space */);
free_list->add_as_tail(hr);
free_list->add_as_head(hr);
}
void G1CollectedHeap::free_humongous_region(HeapRegion* hr,
@ -5065,7 +5065,7 @@ void G1CollectedHeap::update_sets_after_freeing_regions(size_t pre_used,
}
if (free_list != NULL && !free_list->is_empty()) {
MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
_free_list.add_as_tail(free_list);
_free_list.add_as_head(free_list);
}
if (humongous_proxy_set != NULL && !humongous_proxy_set->is_empty()) {
MutexLockerEx x(OldSets_lock, Mutex::_no_safepoint_check_flag);