Thread overview
Is there has document that about dlang GC design and implement?
Oct 18
lili
May 24
mw
May 24
mw
October 18
exclude read source, how to learn GC implement。
May 24
On Friday, 18 October 2019 at 07:07:06 UTC, lili wrote:
> exclude read source, how to learn GC implement。

Google search “gc document site:dlang.org”

may find some info, e.g.

https://wiki.dlang.org/DIP46


May 24
On Sunday, 24 May 2020 at 16:12:44 UTC, mw wrote:
> On Friday, 18 October 2019 at 07:07:06 UTC, lili wrote:
>> exclude read source, how to learn GC implement。
>
> Google search “gc document site:dlang.org”
>
> may find some info, e.g.
>
> https://wiki.dlang.org/DIP46

https://dlang.org/spec/garbage.html

esp.

https://dlang.org/spec/garbage.html#how_gc_works

How Garbage Collection Works

The GC works by:

Stopping all other threads than the thread currently trying to allocate GC memory.
‘Hijacking’ the current thread for GC work.
Scanning all ‘root’ memory ranges for pointers into GC allocated memory.
Recursively scanning all allocated memory pointed to by roots looking for more pointers into GC allocated memory.
Freeing all GC allocated memory that has no active pointers to it and do not need destructors to run.
Queueing all unreachable memory that needs destructors to run.
Resuming all other threads.
Running destructors for all queued memory.
Freeing any remaining unreachable memory.
Returning the current thread to whatever work it was doing.