Re: [WebMacro-user] Optimising Variable to reduce instantiation overhead

[<Web...@St...>]

On Mon, 13 Mar 2006, Keats Kirsch wrote:

| Endre St=F8lsvik wrote:
|=20
| > On Sun, 12 Mar 2006, Alex Twisleton-Wykeham-Fiennes wrote:
| >=20
| > | All,
| > | | more performance tweaks, this one to the org.webmacro.engine.Vari=
able
| > class.
| >=20
| > Excellent performance tuneup you're into, Alex!
| >=20
| > | - made the getVariableName() method check to see if _vname has been=
 |
| > initialised, and if not then build the name before returning it.  Thi=
s is
| > now | synchronized as it changes the state of the object.
| >=20
| > So?
| >=20
| > Is it shared across threads?
| > =20
| The answer is yes, as we were so rudely reminded when the dynamic #incl=
ude bug
| was discovered recently.  Compiled template instances are cached and ma=
y be
| shared by multiple threads.

That templates are shared, is kinda rather obvious - they are cached. Tha=
t=20
they have som much _modifiable_ internal state isn't necessarily that=20
obvious to me.

Endre.