Re: Performance question
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- Subject: Re: Performance question
- From: Mark Hamburg <mhamburg@...>
- Date: 2003年9月28日 11:09:05 -0700
Pre-registered = put them in the registry.
Instead of:
lua_pushliteral( L, "myString" );
Use something like the following (probably wrapped in subroutines):
static int sRegIndex = LUA_NOREF;
if( sRegIndex == LUA_NOREF ) {
lua_pushliteral( L, "myString" );
lua_pushvalue( L, -1 ); // dup
sRegIndex = lua_ref( L, 1 );
} else {
lua_getref( L, sRegIndex );
}
This way we only process "myString" once to convert it into a Lua string.
Mark
on 9/27/03 3:53 PM, Ando Sonenblick at ando@spritec.com wrote:
>
> On Thursday, September 25, 2003, at 09:18 AM, Mark Hamburg wrote:
>
>> My guess would
>> be that for the code you wrote, it would be better to do the table
>> indexing
>> in Lua since lua_pushliteral has to find the corresponding Lua string.
>> If
>> you pre-registered the strings -- or registered them on your first
>> pass --
>> you could avoid that issue.
>
> Preregistered? I havent come across preregistering strings. Can you
> tell me about it (or send me to a page about it)?
>
> thx,
> ando
>
>
> -----------------------
> Ando Sonenblick
> SpriTec Software
> www.spritec.com
>