Heap profiler improvements.

Heap profiler improvements.

- account code objects in retainers profile;
- differentiate between function boilerplates and closures;
- simplify code;

Committed: http://code.google.com/p/v8/source/detail?r=3124

[Søren Thygesen Gjesse, 2009-10-26 08:13:09]

http://codereview.chromium.org/335016/diff/1/5
File src/objects.cc (right):

http://codereview.chromium.org/335016/diff/1/5#newcode1255
Line 1255: Heap::function_class_symbol() : Heap::closure_symbol();
Where will this show up? All actual JsvaScript functions will now get the
constructor name "(closure)".

[mnaganov (inactive), 2009-10-26 09:54:14]

http://codereview.chromium.org/335016/diff/1/5
File src/objects.cc (right):

http://codereview.chromium.org/335016/diff/1/5#newcode1255
Line 1255: Heap::function_class_symbol() : Heap::closure_symbol();
On 2009/10/26 08:13:09, Søren Gjesse wrote:
> Where will this show up? All actual JsvaScript functions will now get the
> constructor name "(closure)".
> 

'constructor_name' is only used in heap profiler. Factories use 'class_name'
function declared above.

[Søren Thygesen Gjesse, 2009-10-26 10:08:01]

LGTM