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From: guolongqiang <guolongqiang@huawei.com>
To: "musl@lists.openwall.com" <musl@lists.openwall.com>
Cc: xufengwei <xufengwei@huawei.com>
Subject: [musl] questions about __tl_lock
Date: Fri, 9 Aug 2024 03:21:23 +0000	[thread overview]
Message-ID: <f2bad7e008a1418dbcbba6fb8af2446c@huawei.com> (raw)

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Hi, all
         I have one question about __tl_lock. The current implementation of __tl_lock shown as follow.
Obviously __thread_list_lock is a private memory, why don't we pass FUTEX_PRIVATE option to __wait?

```
void __tl_lock(void)
{
int tid = __pthread_self()->tid;
int val = __thread_list_lock;
if (val == tid) {
tl_lock_count++;
return;
}
while ((val = a_cas(&__thread_list_lock, 0, tid)))
__wait(&__thread_list_lock, &tl_lock_waiters, val, 0);
}
```
Thank you to explain.


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             reply	other threads:[~2024-08-09  3:21 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-09  3:21 guolongqiang [this message]
2024-08-10  2:51 ` Rich Felker
2024-08-10  3:28   ` 答复: " guolongqiang
2024-08-10  4:04     ` [musl] " Rich Felker

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