Enables V8 integration with the Intel VTune performance analysis tool. This allows the VTune profi…

src/mark-compact.cc

Index: src/mark-compact.cc
===================================================================
--- src/mark-compact.cc	(revision 12182)
+++ src/mark-compact.cc	(working copy)
@@ -689,9 +689,13 @@
 #ifdef ENABLE_GDB_JIT_INTERFACE
   if (FLAG_gdbjit) {
     // If GDBJIT interface is active disable compaction.
-    compacting_collection_ = false;
+    compacting_ = false;
   }
 #endif
+// For now, set compacting to false when vtune is running.
+// Ideally we want to communicate the code movement.
+if (VTUNERUNNING)
+  compacting_ = false;

[danno, 2012/08/02 12:38:11]

Can you extend siggi's SetJitCodeEventHandler API to take a "flags" argument,
where the flags are boolean flags, one being
"JIT_CODE_HANDLER_SUPPORTS_MOVED_CODE". If this flag is not set when the handler
is installed, then compacting_ is false (doesn't need to be conditional

 
   // Clear marking bits if incremental marking is aborted.
   if (was_marked_incrementally_ && abort_incremental_marking_) {