From: Kevin Wolf <kwolf@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
Anthony Liguori <aliguori@us.ibm.com>,
Alon Levy <alevy@redhat.com>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 1/6] Enable joinable POSIX threads
Date: Wed, 21 Sep 2011 15:40:28 +0200 [thread overview]
Message-ID: <4E79E94C.6040708@redhat.com> (raw)
In-Reply-To: <4E798F66.4070809@redhat.com>
Am 21.09.2011 09:16, schrieb Paolo Bonzini:
> On 09/20/2011 06:53 PM, Jan Kiszka wrote:
>> - qemu_thread_create(&thread_id, event_thread, card);
>> - qemu_thread_create(&thread_id, handle_apdu_thread, card);
>> + qemu_thread_create(&thread_id, event_thread, card, QEMU_THREAD_DETACHED);
>> + qemu_thread_create(&thread_id, handle_apdu_thread, card,
>> + QEMU_THREAD_DETACHED);
>> return 0;
>> }
>
> I think these two should be joinable. Otherwise, you might be
> destroying the apdu_thread_quit_mutex while the handle_apdu_thread
> hasn't yet finished unlocking it (even though it already progressed
> enough in qemu_mutex_destroy to release the main thread).
>
> Anyhow, the bug is not introduced by your patch, so
>
> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Actually, the man page says that joinable is the default, so this patch
does change the behaviour.
Kevin
next prev parent reply other threads:[~2011-09-21 13:37 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-20 16:53 [Qemu-devel] [PATCH 0/6] Spread the use of QEMU threading & locking API Jan Kiszka
2011-09-20 16:53 ` [Qemu-devel] [PATCH 1/6] Enable joinable POSIX threads Jan Kiszka
2011-09-21 7:16 ` Paolo Bonzini
2011-09-21 13:40 ` Kevin Wolf [this message]
2011-09-21 13:38 ` Paolo Bonzini
2011-09-20 16:53 ` [Qemu-devel] [PATCH 2/6] Introduce qemu_cond_timedwait Jan Kiszka
2011-09-20 18:22 ` Paolo Bonzini
2011-09-20 19:02 ` [Qemu-devel] [PATCH v2 2/6] Introduce qemu_cond_timedwait for POSIX Jan Kiszka
2011-09-20 16:53 ` [Qemu-devel] [PATCH 3/6] Switch POSIX compat AIO to QEMU abstractions Jan Kiszka
2011-09-21 13:57 ` Kevin Wolf
2011-09-21 14:02 ` Jan Kiszka
2011-09-21 14:11 ` Kevin Wolf
2011-09-20 16:53 ` [Qemu-devel] [PATCH 4/6] Switch compatfd to QEMU thread Jan Kiszka
2011-09-20 16:53 ` [Qemu-devel] [PATCH 5/6] audio: Use QEMU threads & synchronization Jan Kiszka
2011-09-20 16:53 ` [Qemu-devel] [PATCH 6/6] audio: Switch coreaudio to QemuMutex Jan Kiszka
2011-09-26 7:58 ` Andreas Färber
2011-09-26 8:06 ` Jan Kiszka
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