From mboxrd@z Thu Jan  1 00:00:00 1970
From: glmeocci@gmail.com (Gian Lorenzo Meocci)
Date: Tue, 2 Dec 2008 21:15:00 +0100
Subject: [ltt-dev] trace a futex
In-Reply-To: <20081202195015.GA25792@Krystal>
References: <8d94e9280812021142j2eb5ca72td730410e97ccd9a1@mail.gmail.com>
	<20081202195015.GA25792@Krystal>
Message-ID: <8d94e9280812021215m6a63d6c2l4e64acd26274953d@mail.gmail.com>

Hi Mathieu,

thanks for your reply.

I want specify that:
1) I am already patching glibc (and, of course, nptl/pthread_*)
2) I already add two event to pthread_mutex_lock. The first at the
beginning of the function and the second after all return 0 presented
on that function. But those two events are not enough to establish if
a pthread_mutex_lock has been blocking.
In fact I know only the time spent on pthread_mutex_lock. If this time
is little probably I hold the mutex otherwise I was been descheduled.

So thanks a lot again,


-- 
Ing. Gian Lorenzo Meocci
http://www.meocci.it