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Thanks!<br>
<br>
The idea of using EventConsumer per connection seemed pretty
natural for me - thus my surprise at your warning as I'd expect that
it's a standard way to use events. Well, it shows I'm a newbie to FS
;)<br>
<br>
Regards,<br>
Karol<br>
<br>
<br>
On 11/28/2011 09:26 PM, Anthony Minessale wrote:
<blockquote
cite="mid:CAKbxfG_i0kuS0avW63JEAEEkK3pohen_CYdr5rafSiaK+LDXWA@mail.gmail.com"
type="cite">you can do whatever you wish. I was just warning you
that nobody has really pushed event binding and unbinding in such
a way before which may explain how you uncovered that issue.
Usually things that bind stay resident for a long time.
<div>
<br>
<br>
<div class="gmail_quote">2011/11/28 Karol Golab <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:karol@tls.pl">karol@tls.pl</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"> <br>
Well, I have a Perl script run as part of a dialplan and
the script creates an EventConsumer. Thus I have one bind
/ unbind pair for each connection. Is this somehow wrong /
against what the EventConsumer API was planned for?<br>
How could I have a single bind/unbind in this case?<br>
<br>
As for choosing event socket and C application vs a
script - what is the main difference / reason to switch:
performance of some other issues? My CPU seems to have
some cycles to spare.<br>
<br>
Regards,<br>
<font color="#888888"> Karol</font>
<div>
<div class="h5"><br>
<br>
<br>
On 11/28/2011 05:36 PM, Anthony Minessale wrote:
<blockquote type="cite">you're probably right but I
wonder what you are doing that is binding and
unbinding so much?
<div>The bind and unbind was designed to be called
once when the module is loaded and called again
when it exits.</div>
<div><br>
</div>
<div>My fear is you are using the embedded scripting
event handers in some quick repeating fashion.</div>
<div><br>
</div>
<div>I did a commit to flip that case around but I
don't encourage you to use embedded scripts for
heavy event traffic, that's what event socket is
for and if you have the C skills to debug this,
you might want to try a C app ;)</div>
<div><br>
<br>
<div class="gmail_quote">2011/11/28 Brian West <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:brian@freeswitch.org"
target="_blank">brian@freeswitch.org</a>></span><br>
<blockquote class="gmail_quote" style="margin:
0pt 0pt 0pt 0.8ex; border-left: 1px solid
rgb(204, 204, 204); padding-left: 1ex;">
<div style="word-wrap: break-word;">Please
post it to <a moz-do-not-send="true"
href="http://jira.freeswitch.org"
target="_blank">jira.freeswitch.org</a>
<div><br>
</div>
<font color="#888888">
<div>/b</div>
</font>
<div>
<div><br>
<div>
<div>On Nov 28, 2011, at 2:31 AM,
Karol Golab wrote:</div>
<br>
<blockquote type="cite"><span
style="border-collapse: separate;
font-family: Helvetica;
font-style: normal; font-variant:
normal; font-weight: normal;
letter-spacing: normal;
line-height: normal; text-indent:
0px; text-transform: none;
white-space: normal; word-spacing:
0px; font-size: medium;"><br>
Hi!<br>
<br>
I've noticed some strange code
in src/switch_event.c - could
someone<span> </span><br>
smarter (& knowing the
mentioned code) please take a
look?<br>
<br>
The problem is in the order of
calls to locks BLOCK & RWLOCK
- it<span> </span><br>
differs between functions:<br>
<br>
switch_event_bind_removable<br>
switch_mutex_lock(BLOCK);<br>
switch_thread_rwlock_wrlock(RWLOCK);<br>
<br>
switch_event_unbind_callback<br>
switch_thread_rwlock_wrlock(RWLOCK);<br>
switch_mutex_lock(BLOCK);<br>
<br>
switch_event_unbind<br>
switch_thread_rwlock_wrlock(RWLOCK);<br>
switch_mutex_lock(BLOCK);<br>
<br>
As I understand this may lead to
an outright deadlock between bind<span> </span><br>
and unbind.<br>
<br>
I stumbled upon this code while
debugging what seems like
deadlocks<span> </span><br>
in our test FS installation put
under some heavy load. The load is
about<span> </span><br>
25 new event subscribers per
second (destroyed few seconds
later) and<span> </span><br>
about 700 events per second.<br>
<br>
Regards,<br>
Karol<br>
</span></blockquote>
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<pre cols="72"> Karol
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<pre class="moz-signature" cols="72"> Karol
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