archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 06:45:07 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8036025: Sort the freelist in order to shrink the heap

Browse source 
The free list is being maintained in a sorted fashion and old and humongous regions are allocated from the bottom of the heap while young regions are allocated at the top.

Co-authored-by: Staffan Friberg <staffan.friberg@oracle.com>
Reviewed-by: tschatzl, mgerdin
This commit is contained in:
Jesper Wilhelmsson 2014-02-28 15:27:09 +01:00
parent 853fffb2cb
commit 1e1ad7f132
8 changed files with 258 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

8
hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp
View file

@ -1929,7 +1929,7 @@ public:
}
}
_cleanup_list->add_as_tail(&local_cleanup_list);
_cleanup_list->add_ordered(&local_cleanup_list);
assert(local_cleanup_list.is_empty(), "post-condition");
HeapRegionRemSet::finish_cleanup_task(&hrrs_cleanup_task);
@ -2158,9 +2158,9 @@ void ConcurrentMark::completeCleanup() {
// so it's not necessary to take any locks
while (!_cleanup_list.is_empty()) {
HeapRegion* hr = _cleanup_list.remove_head();
assert(hr != NULL, "the list was not empty");
assert(hr != NULL, "Got NULL from a non-empty list");
hr->par_clear();
tmp_free_list.add_as_tail(hr);
tmp_free_list.add_ordered(hr);
// Instead of adding one region at a time to the secondary_free_list,
// we accumulate them in the local list and move them a few at a
@ -2180,7 +2180,7 @@ void ConcurrentMark::completeCleanup() {
{
MutexLockerEx x(SecondaryFreeList_lock, Mutex::_no_safepoint_check_flag);
g1h->secondary_free_list_add_as_tail(&tmp_free_list);
g1h->secondary_free_list_add(&tmp_free_list);
SecondaryFreeList_lock->notify_all();
}