archive/ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2025-08-15 13:39:04 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

rb_gc_impl_mark_and_move: avoid needless writes

Browse source 
Assuming not all objects are moved during compaction, it
is preferable to avoid rewriting references that haven't moved
as to avoid invalidating potentially shared memory pages.
This commit is contained in:
Jean Boussier 2025-08-01 18:17:33 +02:00
parent 95320f1ddf
commit 3ef8d833ab
1 changed files with 4 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

5
gc/default/default.c
View file

@ -4420,7 +4420,10 @@ rb_gc_impl_mark_and_move(void *objspace_ptr, VALUE *ptr)
GC_ASSERT(objspace->flags.during_compacting); GC_ASSERT(objspace->flags.during_compacting);
GC_ASSERT(during_gc); GC_ASSERT(during_gc);
*ptr = rb_gc_impl_location(objspace, *ptr); VALUE destination = rb_gc_impl_location(objspace, *ptr);
if (destination != *ptr) {
*ptr = destination;
}
} }
else { else {
gc_mark(objspace, *ptr); gc_mark(objspace, *ptr);