From: Marcelo Tosatti <mtosatti@redhat.com>
To: qemu-devel@nongnu.org
Cc: Anthony Liguori <aliguori@us.ibm.com>
Subject: Re: [Qemu-devel] [patch 1/2] qemu: sem/thread helpers
Date: Tue, 17 Mar 2009 14:42:17 -0300 [thread overview]
Message-ID: <20090317174217.GA10492@amt.cnet> (raw)
In-Reply-To: <49BD0D98.8050803@redhat.com>
On Sun, Mar 15, 2009 at 04:15:52PM +0200, Avi Kivity wrote:
> Marcelo Tosatti wrote:
>> +
>> +struct QemuSem {
>> + sem_t sema;
>> +};
>>
>
> Why aren't you using pthread_mutex_t?
Because we want the thread waiting on the lock to be awakened
once the holder releases it. This does not happen with pthread
mutexes AFAIK.
next prev parent reply other threads:[~2009-03-17 17:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-11 16:16 [Qemu-devel] [patch 0/2] RFC: separate thread for IO Marcelo Tosatti
2009-03-11 16:16 ` [Qemu-devel] [patch 1/2] qemu: sem/thread helpers Marcelo Tosatti
2009-03-11 16:33 ` [Qemu-devel] " Anthony Liguori
2009-03-11 16:48 ` [Qemu-devel] " Paul Brook
2009-03-11 16:56 ` Anthony Liguori
2009-03-11 16:58 ` Marcelo Tosatti
2009-03-18 18:47 ` Marcelo Tosatti
2009-03-15 14:15 ` Avi Kivity
2009-03-17 17:42 ` Marcelo Tosatti [this message]
2009-03-17 23:07 ` Paul Brook
2009-03-17 23:43 ` Marcelo Tosatti
2009-03-11 16:16 ` [Qemu-devel] [patch 2/2] qemu: separate thread for io Marcelo Tosatti
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