Changeset 28434 in webkit for trunk/JavaScriptCore/wtf/TCPageMap.h

Timestamp:

Dec 4, 2007, 7:58:41 PM (17 years ago)

Author:

[email protected]

Message:

Merge TCMalloc r38

Reviewed by Mark Rowe and Geoff Garen.

It also result in a performance progression between 0.5% and
0.9% depending on the test, however most if not all of this
gain will be consumed by the overhead involved in the later
change to release memory to the system.

File:

• trunk/JavaScriptCore/wtf/TCPageMap.h (modified) (3 diffs)

trunk/JavaScriptCore/wtf/TCPageMap.h

@@ -79 +79 @@
   }
 
+  void PreallocateMoreMemory() {}
+
   // REQUIRES "k" is in range "[0,2^BITS-1]".
   // REQUIRES "k" has been ensured before.
@@ -156 +158 @@
   }
 
+  void PreallocateMoreMemory() {
+    // Allocate enough to keep track of all possible pages
+    Ensure(0, 1 << BITS);
+  }
+
 #ifdef WTF_CHANGES
   template<class Visitor, class MemoryReader>
@@ -255 +262 @@
   }
 
+  void PreallocateMoreMemory() {
+  }
+
 #ifdef WTF_CHANGES
   template<class Visitor, class MemoryReader>