From: DJ Delorie via Libc-alpha <libc-alpha@sourceware.org>
To: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Cc: libc-alpha@sourceware.org, fweimer@redhat.com
Subject: Re: [PATCH] malloc: Use correct C11 atomics for fastbin
Date: Fri, 02 Dec 2022 00:11:20 -0500 [thread overview]
Message-ID: <xnbkom75l3.fsf@greed.delorie.com> (raw)
In-Reply-To: <PAWPR08MB8982002BD1E5CE0E74F4F19B830A9@PAWPR08MB8982.eurprd08.prod.outlook.com>
Wilco Dijkstra via Libc-alpha <libc-alpha@sourceware.org> writes:
> +/* Atomically pop from the fastbin list. The arena lock must be held to
> + block other threads removing entries, avoiding the ABA issue. */
If the arena lock must be held anyway, why go through the compare and
exchange overhead? We know we're the only thread accessing it.
next prev parent reply other threads:[~2022-12-02 5:11 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-21 16:09 [PATCH] malloc: Use correct C11 atomics for fastbin Wilco Dijkstra via Libc-alpha
2022-11-21 16:18 ` Florian Weimer via Libc-alpha
2022-11-21 16:55 ` Wilco Dijkstra via Libc-alpha
2022-11-21 16:56 ` Wilco Dijkstra via Libc-alpha
2022-11-21 17:00 ` Florian Weimer via Libc-alpha
2022-12-02 5:11 ` DJ Delorie via Libc-alpha [this message]
2022-12-02 6:36 ` Florian Weimer via Libc-alpha
2022-12-02 10:56 ` Wilco Dijkstra via Libc-alpha
2022-12-02 11:24 ` Florian Weimer via Libc-alpha
2022-12-02 12:02 ` Wilco Dijkstra via Libc-alpha
2022-12-02 18:55 ` DJ Delorie via Libc-alpha
2022-12-05 18:39 ` Zack Weinberg via Libc-alpha
2022-12-06 16:19 ` DJ Delorie via Libc-alpha
2022-12-12 3:35 ` Zack Weinberg via Libc-alpha
2022-12-12 11:57 ` Florian Weimer via Libc-alpha
2022-12-12 11:56 ` Florian Weimer via Libc-alpha
2022-12-06 13:29 ` Wilco Dijkstra via Libc-alpha
2022-12-06 13:37 ` Adhemerval Zanella Netto via Libc-alpha
2022-12-06 14:31 ` Zack Weinberg via Libc-alpha
2022-12-06 16:23 ` DJ Delorie via Libc-alpha
2022-12-15 15:43 ` Wilco Dijkstra via Libc-alpha
2022-12-02 18:55 ` DJ Delorie via Libc-alpha
-- strict thread matches above, loose matches on Subject: below --
2022-12-06 15:04 Wilco Dijkstra via Libc-alpha
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