This patch is the propagation version of https://codereview.chromium.org/10824032 patch

src/full-codegen.cc

Index: src/full-codegen.cc
===================================================================
--- src/full-codegen.cc	(revision 13419)
+++ src/full-codegen.cc	(working copy)
@@ -307,7 +307,11 @@
 #ifdef ENABLE_GDB_JIT_INTERFACE
   masm.positions_recorder()->StartGDBJITLineInfoRecording();
 #endif
-
+  if (isolate->logger()->is_code_event_handler_enabled()) {

[danno, 2013/02/01 13:43:10]

ove enabled check inside logger API.

+    void* line_info =

[danno, 2013/02/01 13:43:10]

jit_handler_info

+        isolate->logger()->CodeStartLinePosInfoRecordEvent();
+    masm.positions_recorder()->InitializeUserData(line_info);
+  }
   FullCodeGenerator cgen(&masm, info);
   cgen.Generate();
   if (cgen.HasStackOverflow()) {
@@ -344,6 +348,13 @@
     GDBJIT(RegisterDetailedLineInfo(*code, lineinfo));
   }
 #endif
+  if (isolate->logger()->is_code_event_handler_enabled()) {

[danno, 2013/02/01 13:43:10]

Move enabled check inside logger API.

+    if (!code.is_null()) {
+      void* line_info =

[danno, 2013/02/01 13:43:10]

jit_handler_info

+          masm.positions_recorder()->DetachJITLineInfo();
+      LOG_CODE_EVENT(isolate, CodeEndLinePosInfoRecordEvent(*code, line_info));
+    }
+  }
   return !code.is_null();
 }