commit 04921a8093ce8bbec34084bd742b7aa3d299be15
author ager@chromium.org <ager@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00> Mon Jun 27 13:21:41 2011 +0000
committer ager@chromium.org <ager@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00> Mon Jun 27 13:21:41 2011 +0000
tree 0e42a1f0fd8c50bad9d00a79a8628b5ca9ceff6d
parent 59c14269343d7e88009ed3690c4edefe5b90a61e

Version 3.4.7.

Fixed 64-bit build on FreeBSD.

Added API to set the property attributes for the prototype property on functions created from FunctionTemplates.

Bugfixes and performance work.


git-svn-id: http://v8.googlecode.com/svn/trunk@8431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap.cc

diff --git a/src/heap.cc b/src/heap.cc
index 58ad372..0ce5e34 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -523,11 +523,6 @@
     GarbageCollectionEpilogue();
   }
 
-
-#ifdef ENABLE_LOGGING_AND_PROFILING
-  if (FLAG_log_gc) HeapProfiler::WriteSample();
-#endif
-
   return next_gc_likely_to_collect_more;
 }
 
@@ -2639,12 +2634,13 @@
 
 
 MaybeObject* Heap::AllocateSubString(String* buffer,
-                                int start,
-                                int end,
-                                PretenureFlag pretenure) {
+                                     int start,
+                                     int end,
+                                     PretenureFlag pretenure) {
   int length = end - start;
-
-  if (length == 1) {
+  if (length == 0) {
+    return empty_string();
+  } else if (length == 1) {
     return LookupSingleCharacterStringFromCode(buffer->Get(start));
   } else if (length == 2) {
     // Optimization for 2-byte strings often used as keys in a decompression
@@ -2984,9 +2980,6 @@
     if (!maybe_result->ToObject(&result)) return maybe_result;
   }
   HeapObject::cast(result)->set_map(map);
-#ifdef ENABLE_LOGGING_AND_PROFILING
-  isolate_->producer_heap_profile()->RecordJSObjectAllocation(result);
-#endif
   return result;
 }
 
@@ -3435,9 +3428,6 @@
     JSObject::cast(clone)->set_properties(FixedArray::cast(prop));
   }
   // Return the new clone.
-#ifdef ENABLE_LOGGING_AND_PROFILING
-  isolate_->producer_heap_profile()->RecordJSObjectAllocation(clone);
-#endif
   return clone;
 }
 
@@ -5122,11 +5112,6 @@
   LOG(isolate_, IntPtrTEvent("heap-capacity", Capacity()));
   LOG(isolate_, IntPtrTEvent("heap-available", Available()));
 
-#ifdef ENABLE_LOGGING_AND_PROFILING
-  // This should be called only after initial objects have been created.
-  isolate_->producer_heap_profile()->Setup();
-#endif
-
   return true;
 }