mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-03-03 07:29:23 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Skip the CAS on new_pos < 0 (#1080)

Browse source
This commit is contained in:
Jōshin 2024-01-13 00:08:28 -05:00 • committed by GitHub
parent fd75fd1467
commit 6715b670b1
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
libc/runtime/zipos-seek.c
View file

@ -66,8 +66,8 @@ Restart:
default:
new_pos = einval();
}
} while (!LIKELY(atomic_compare_exchange_weak_explicit(
&h->pos, &pos, new_pos < 0 ? pos : new_pos, memory_order_release,
memory_order_relaxed)));
} while (new_pos >= 0 && !LIKELY(atomic_compare_exchange_weak_explicit(
&h->pos, &pos, new_pos, memory_order_release,
memory_order_relaxed)));
return new_pos;
}