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diff src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp @ 2432:455328d90876

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7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end Summary: What the synopsis says. Reviewed-by: jwilhelm, iveresov, johnc
author tonyp
date Tue, 29 Mar 2011 22:36:16 -0400
parents 1216415d8e35
children fe189d4a44e9
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp	Mon Mar 28 10:58:54 2011 -0700
+++ b/src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp	Tue Mar 29 22:36:16 2011 -0400
@@ -110,6 +110,23 @@
 
 //////////////////// HeapRegionLinkedList ////////////////////
 
+inline void HeapRegionLinkedList::add_as_head(HeapRegion* hr) {
+  hrs_assert_mt_safety_ok(this);
+  assert((length() == 0 && _head == NULL && _tail == NULL) ||
+         (length() >  0 && _head != NULL && _tail != NULL),
+         hrs_ext_msg(this, "invariant"));
+  // add_internal() will verify the region.
+  add_internal(hr);
+
+  // Now link the region.
+  if (_head != NULL) {
+    hr->set_next(_head);
+  } else {
+    _tail = hr;
+  }
+  _head = hr;
+}
+
 inline void HeapRegionLinkedList::add_as_tail(HeapRegion* hr) {
   hrs_assert_mt_safety_ok(this);
   assert((length() == 0 && _head == NULL && _tail == NULL) ||