mutex: Optimize a little

lhmouse · Oct 13, 2024 · 0b0d2d2 · 0b0d2d2
1 parent 0ad0148
commit 0b0d2d2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mcfgthread/mutex.c b/mcfgthread/mutex.c
@@ -73,7 +73,7 @@ _MCF_mutex_lock_slow(_MCF_mutex* mutex, const int64_t* timeout_opt)
       new.__locked = 1;
       new.__sp_mask = old.__sp_mask | (old.__sp_mask + (old.__locked & spinnable));
       new.__sp_nfail = do_adjust_sp_nfail(old.__sp_nfail, (int) old.__locked * 2 - 1);
-      new.__nsleep = old.__nsleep + (old.__locked & ~spinnable);
+      new.__nsleep = old.__nsleep + (old.__locked & (spinnable - 1U));
     }
     while(!_MCF_atomic_cmpxchg_weak_pptr_arl(mutex, &old, &new));
 #pragma GCC diagnostic pop