* Improve debugallocation tc_malloc_size (csilvers)

	* Extend atomicops.h to use ARM V6+ optimized code (sanek)
	* Fix failure in Ranges test (ppluzhnikov)
	* Change malloc-hook to use a list-like structure (llib)
	* Update tcmalloc_regtest to use new malloc hooks (llib)
	* PARTIAL: Keep track of 'overhead' bytes in the page cache (csilvers)


git-svn-id: http://gperftools.googlecode.com/svn/trunk@108 6b5cf1ce-ec42-a296-1ba9-69fdba395a50

1 files changed, 6 insertions, 0 deletions

diff --git a/src/central_freelist.h b/src/central_freelist.h
index 2e6a31b..a520f68 100644
--- a/src/central_freelist.h
+++ b/src/central_freelist.h
@@ -64,6 +64,12 @@ class CentralFreeList {
   // Returns the number of free objects in the transfer cache.
   int tc_length();
 
+  // Returns the memory overhead (internal fragmentation) attributable
+  // to the freelist.  This is memory lost when the size of elements
+  // in a freelist doesn't exactly divide the page-size (a 8192-byte
+  // page full of 5-byte objects would have 2 bytes memory overhead).
+  size_t OverheadBytes();
+
  private:
   // TransferCache is used to cache transfers of
   // sizemap.num_objects_to_move(size_class) back and forth between