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diff src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp @ 3830:f44782f04dd4

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7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally Summary: Refactor the allocation code during GC to use the G1AllocRegion abstraction. Use separate subclasses of G1AllocRegion for survivor and old regions. Avoid BOT updates and dirty survivor cards incrementally for the former. Reviewed-by: brutisso, johnc, ysr
author tonyp
date Fri, 12 Aug 2011 11:31:06 -0400
parents c3f1170908be
children c9814fadeb38
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp	Thu Aug 11 11:36:29 2011 -0700
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp	Fri Aug 12 11:31:06 2011 -0400
@@ -77,6 +77,38 @@
   return result;
 }
 
+inline HeapWord* G1CollectedHeap::survivor_attempt_allocation(size_t
+                                                              word_size) {
+  assert(!isHumongous(word_size),
+         "we should not be seeing humongous-size allocations in this path");
+
+  HeapWord* result = _survivor_gc_alloc_region.attempt_allocation(word_size,
+                                                      false /* bot_updates */);
+  if (result == NULL) {
+    MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
+    result = _survivor_gc_alloc_region.attempt_allocation_locked(word_size,
+                                                      false /* bot_updates */);
+  }
+  if (result != NULL) {
+    dirty_young_block(result, word_size);
+  }
+  return result;
+}
+
+inline HeapWord* G1CollectedHeap::old_attempt_allocation(size_t word_size) {
+  assert(!isHumongous(word_size),
+         "we should not be seeing humongous-size allocations in this path");
+
+  HeapWord* result = _old_gc_alloc_region.attempt_allocation(word_size,
+                                                       true /* bot_updates */);
+  if (result == NULL) {
+    MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
+    result = _old_gc_alloc_region.attempt_allocation_locked(word_size,
+                                                       true /* bot_updates */);
+  }
+  return result;
+}
+
 // It dirties the cards that cover the block so that so that the post
 // write barrier never queues anything when updating objects on this
 // block. It is assumed (and in fact we assert) that the block