Hi,

Is it possible to trace GC allocation calls to determine times of program "death" and have some stats?

So i want the following information:
  - garbage collection starts at {time}
  - garbage collection stops at {time}
  - (optionally) gc took {time}, collected {size} bytes

thanks.

On 02/18/2014 10:10 AM, Ruslan Mullakhmetov wrote:
>
> Hi,
>
> Is it possible to trace GC allocation calls to determine times of
> program "death" and have some stats?
>
> So i want the following information:
>    - garbage collection starts at {time}
>    - garbage collection stops at {time}
>    - (optionally) gc took {time}, collected {size} bytes
>
> thanks.

I may be totally off but I vaguely remember that it is possible to plug in one's own garbage collector. It should be possible to write a garbage collector that collects some statistics before calling back the default GC functions.

Ali

On Tuesday, 18 February 2014 at 18:10:40 UTC, Ruslan Mullakhmetov wrote:
>
> Hi,
>
> Is it possible to trace GC allocation calls to determine times of program "death" and have some stats?
>
> So i want the following information:
>   - garbage collection starts at {time}
>   - garbage collection stops at {time}
>   - (optionally) gc took {time}, collected {size} bytes
>
> thanks.

I believe you'll have to modify the runtime to achieve this.  See the "gc" folder[1]. An example of a custom garbage collector is in the "gcstub" folder[2].

Mike


[1] https://github.com/D-Programming-Language/druntime/tree/e47a00bff935c3f079bb567a6ec97663ba384487/src/gc
[2] https://github.com/D-Programming-Language/druntime/blob/e47a00bff935c3f079bb567a6ec97663ba384487/src/gcstub/gc.d

On Tuesday, 18 February 2014 at 22:59:00 UTC, Mike wrote:
> On Tuesday, 18 February 2014 at 18:10:40 UTC, Ruslan Mullakhmetov wrote:
>>
>> Hi,
>>
>> Is it possible to trace GC allocation calls to determine times of program "death" and have some stats?
>>
>> So i want the following information:
>>  - garbage collection starts at {time}
>>  - garbage collection stops at {time}
>>  - (optionally) gc took {time}, collected {size} bytes
>>
>> thanks.
>
> I believe you'll have to modify the runtime to achieve this.  See the "gc" folder[1]. An example of a custom garbage collector is in the "gcstub" folder[2].
>
> Mike
>
>
> [1] https://github.com/D-Programming-Language/druntime/tree/e47a00bff935c3f079bb567a6ec97663ba384487/src/gc
> [2] https://github.com/D-Programming-Language/druntime/blob/e47a00bff935c3f079bb567a6ec97663ba384487/src/gcstub/gc.d



thanks, but i hoped it would be more graceful.