Changeset 38866 in webkit for trunk/JavaScriptCore/wtf/FastMalloc.cpp

Timestamp:

Dec 1, 2008, 1:14:06 PM (16 years ago)

Author:

Antti Koivisto

Message:

2008-11-30 Antti Koivisto <Antti Koivisto>

Reviewed by Mark Rowe.

Try to return free pages in the current thread cache too.

• wtf/FastMalloc.cpp: (WTF::TCMallocStats::releaseFastMallocFreeMemory):

File:

• trunk/JavaScriptCore/wtf/FastMalloc.cpp (modified) (1 diff)

trunk/JavaScriptCore/wtf/FastMalloc.cpp

@@ -3846 +3846 @@
 void releaseFastMallocFreeMemory()
 {
+    // Flush free pages in the current thread cache back to the page heap.
+    // Low watermark mechanism in Scavenge() prevents full return on the first pass.
+    // The second pass flushes everything.
+    if (TCMalloc_ThreadCache* threadCache = TCMalloc_ThreadCache::GetCacheIfPresent()) {
+        threadCache->Scavenge();
+        threadCache->Scavenge();
+    }
+
     SpinLockHolder h(&pageheap_lock);
     pageheap->ReleaseFreePages();