[Freeswitch-dev] TraceMonkey

Thu Jul 1 18:51:58 PDT 2010

So in short - if a call executes a long script the other calls will be
queued unable to process events - V8 is a joke as a scripting environment if
you can't create multiple environments. 

I kind of see a poor IVR developer that accidentally made an ever loop and
the entire companies phone system is down :-)

Obviously - I can get around it using several processes, but processes are
bloody expensive on any OS.

---

Will have a chat with the Danes about this one - thanks.

Jan

  _____  

From: Joegen E. Baclor [mailto:joegen at opensipstack.org] 
Sent: 2. juli 2010 03:27
To: Jan Berger
Cc: freeswitch-dev at lists.freeswitch.org
Subject: Re: [Freeswitch-dev] TraceMonkey

For some reason, my email address is being blocked by the moderator so the
list is not getting this mail.   The problem with v8 threading is really
simple.  

1.  Google V8 only allows one context to execute at a time.  
2.  If you are using multiple context design, they must be executed using
exactly the same thread via a single event loop.

Failure to do this will result to a corrupt stack.

On 7/2/10 9:06 AM, Jan Berger wrote: 

What exactly is the problem with threading? 

  _____  

From: Joegen E. Baclor [mailto:joegen at opensipstack.org] 
Sent: 2. juli 2010 02:40
To: freeswitch-dev at lists.freeswitch.org
Cc: Jan Berger
Subject: Re: [Freeswitch-dev] TraceMonkey

I have been using Google V8 for nearly a year now in one of our commercial
SIP product offerings and it scales quite well.   The only gotcha so far is
that google V8 contexts do not go well with a multi threaded environment.
That would force application design to always use async-IO.   One good proof
of this all async project is node.js.

http://nodejs.org/

I think it would also be a good idea to integrate this project into
free-switch which would instantly give free-switch access to a vast number
of JS API including sockets and HTTP client.

my 2 cents.

Joegen

On 7/2/10 7:24 AM, Jan Berger wrote: 

I almost fell asleep when I reached the instruction to download Phython...

But, once you've done phyton + scons its basically just setting the correct
parameters on scons from what I can see.

Looked a bit into Chrome source as well - considering nicking parts of it.
CCXML/VXML is after all browsers.

---

Actually I did not realize that Google was building their own Inet-OS. What
could be very cool was if we could get a Videophone running on Chrome to
connect to FreeSWITCH - it will be plenty of iPad alike devices out running
Chromium soon. 

Jan

  _____  

From: freeswitch-dev-bounces at lists.freeswitch.org
[mailto:freeswitch-dev-bounces at lists.freeswitch.org] On Behalf Of Anthony
Minessale
Sent: 1. juli 2010 20:05
To: freeswitch-dev at lists.freeswitch.org
Subject: Re: [Freeswitch-dev] TraceMonkey

it took me a while to figure out how to build v8 with 64 bit, and now i
forgot again.

it uses scons to build and I wish i could remember because it took me an
hour to figure it out.

lucky for us FS mods can be c++ so it would be plausible to make a mod_v8 

On Thu, Jul 1, 2010 at 11:55 AM, Jan Berger <jan.berger at video24.no> wrote:

Yes - I am going to give V8 a try actually - this looks very promising. Got
a bit lost in the jungle of all the monkey's :-)

The compiler side of Tamarin is not ready yet + it's also been complains
that it's slower than SpiderMonkey on the VM.

  _____  

From: freeswitch-dev-bounces at lists.freeswitch.org
[mailto:freeswitch-dev-bounces at lists.freeswitch.org] On Behalf Of Anthony
Minessale
Sent: 1. juli 2010 17:56

To: freeswitch-dev at lists.freeswitch.org

Subject: Re: [Freeswitch-dev] TraceMonkey

We've been waiting for a modern js engine to mature since shortly after we
started FS.

V8 has promise as well.  It's a matter of making sure there is a good choice
before doing all the work of integration.

On Thu, Jul 1, 2010 at 3:56 AM, Jan Berger <jan.berger at video24.no> wrote:

https://wiki.mozilla.org/JaegerMonkey

Didn't see this - might be an easier path to just wait for this to mature.

Jan

  _____  

From: freeswitch-dev-bounces at lists.freeswitch.org
[mailto:freeswitch-dev-bounces at lists.freeswitch.org] On Behalf Of Jan Berger
Sent: 1. juli 2010 10:38

To: freeswitch-dev at lists.freeswitch.org

Subject: [Freeswitch-dev] TraceMonkey

Hi,

Was searching for updated JavaScript alternatives and found this
Tamarin/TraceMonkey. Do anyone have experience with this version? They claim
a 5-10 x speed increase compared to the older SpiderMonkey

"Tamarin is a JavaScript <https://developer.mozilla.org/en/JavaScript>
engine written in C++. It currently implements Adobe ActionScriptT 3 (a
superset of ECMAScript Edition 3) and is embedded within the AdobeR FlashR
Player versions 9 and later.  Tamarin's jit-compiler,  NanoJIT, is also used
in TraceMonkey <https://wiki.mozilla.org/JavaScript:TraceMonkey>  ergo
SpiderMonkey, which is Mozilla's JavaScript engine in Firefox."

https://developer.mozilla.org/en/Tamarin#Get_Involved!

Is anyone interested in having a mod_tracemonkey for FreeSWITCH - or is
someone already working on this?

Jan

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-- 
Anthony Minessale II

FreeSWITCH http://www.freeswitch.org/
ClueCon http://www.cluecon.com/
Twitter: http://twitter.com/FreeSWITCH_wire

AIM: anthm
MSN:anthony_minessale at hotmail.com
<mailto:MSN%3Aanthony_minessale at hotmail.com> 
GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com
<mailto:PAYPAL%3Aanthony.minessale at gmail.com> 
IRC: irc.freenode.net #freeswitch

FreeSWITCH Developer Conference
sip:888 at conference.freeswitch.org
<mailto:sip%3A888 at conference.freeswitch.org> 
googletalk:conf+888 at conference.freeswitch.org
<mailto:googletalk%3Aconf%2B888 at conference.freeswitch.org> 
pstn:+19193869900

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