Re: [gobo-eiffel-develop] Memory allocation overhead

[Eric B. <er...@go...>]

Colin Paul Adams wrote:
>>>>>> "Eric" == Eric Bezault <er...@go...> writes:
> 
>     Eric> Can you send me the C code generated for T122f10? I don't
>     Eric> understand how we can have 35 seconds self and 7214 seconds
>     Eric> cumulative. Unless its thread is blocked when the GC is
>     Eric> doing something special on its own thread.
> 
> 
> /* DS_ARRAYED_LIST [INTEGER_32].item */
> T6 T122f10(T0* C, T6 a1)
> {
> 	T6 R = 0;
> 	R = (((T112*)(GE_void(((T122*)(C))->a2)))->z2[a1]);
> 	return R;
> }
> 

Hmmm, unless you have calls-on-void-target, GE_void is a macro
that does not call another function:

#define GE_void  (!(obj)?GE_check_void(obj):(obj))

So T122f10 does not call any other C function. So I would believe
that the values for self and cumulative should be the same.
The only explanation that I can think of is that the GC thread
is blocking the other thread while executing T12f10. I know
nothing about threads, and even less about how it works in the
Boehm GC, so what I just said might be completely stupid.

-- 
Eric Bezault
mailto:er...@go...
http://www.gobosoft.com