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Skip the CAS on new_pos < 0 (#1080)

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Jōshin 2024-01-13 00:08:28 -05:00 • committed by GitHub
parent fd75fd1467
commit 6715b670b1
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1 changed files with 3 additions and 3 deletions
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6
libc/runtime/zipos-seek.c
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@ -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;
}