User talk:Pedro Oval/Base64 HMAC MD5 - Revision history

Strife Onizuka: /* Suggestions */

2010-12-22T04:01:17Z

Suggestions

← Older revision		Revision as of 21:01, 21 December 2010
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	: Thank you. I've implemented the first one, but after giving a a try at the globals idea and performing a timing comparison, I concluded that the time used in parameter passing must be negligible compared with the processing time, because I noticed no timing difference. The only pitfall I see is that the extra nesting level could pose a memory problem in LSO with the passing of a long b64, but making it global is too yucky. AFAIK Mono strings don't suffer that problem, and using this function in LSO is somewhere between masochist and suicidal anyway. -- [[User:Pedro Oval\|Pedro Oval]] 02:36, 22 December 2010 (UTC)		: Thank you. I've implemented the first one, but after giving a a try at the globals idea and performing a timing comparison, I concluded that the time used in parameter passing must be negligible compared with the processing time, because I noticed no timing difference. The only pitfall I see is that the extra nesting level could pose a memory problem in LSO with the passing of a long b64, but making it global is too yucky. AFAIK Mono strings don't suffer that problem, and using this function in LSO is somewhere between masochist and suicidal anyway. -- [[User:Pedro Oval\|Pedro Oval]] 02:36, 22 December 2010 (UTC)

			::Definitely masochistic and correct about Mono. Using globals has to be done very carefully otherwise you introduce new bugs, not worth the effort unless you have memory problems (in LSO it was a major concern so I spent a large amount of time optimizing code... not always for speed). -- '''[[User:Strife_Onizuka\|Strife]]''' <sup><small>([[User talk:Strife_Onizuka\|talk]]\|[[Special:Contributions/Strife_Onizuka\|contribs]])</small></sup> 04:01, 22 December 2010 (UTC)

Pedro Oval: /* Suggestions */

2010-12-22T02:36:08Z

Suggestions

← Older revision		Revision as of 19:36, 21 December 2010
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	(One of) The reason(s) LSO is so slow is that it copies every parameter during a function call, if you used a Global for "b64", "H[1-4]" and "i" values it would be much faster (as you would be duplicating the variable fewer times). Of course doing so is evil. -- '''[[User:Strife_Onizuka\|Strife]]''' <sup><small>([[User talk:Strife_Onizuka\|talk]]\|[[Special:Contributions/Strife_Onizuka\|contribs]])</small></sup> 22:23, 16 December 2010 (UTC)		(One of) The reason(s) LSO is so slow is that it copies every parameter during a function call, if you used a Global for "b64", "H[1-4]" and "i" values it would be much faster (as you would be duplicating the variable fewer times). Of course doing so is evil. -- '''[[User:Strife_Onizuka\|Strife]]''' <sup><small>([[User talk:Strife_Onizuka\|talk]]\|[[Special:Contributions/Strife_Onizuka\|contribs]])</small></sup> 22:23, 16 December 2010 (UTC)

			: Thank you. I've implemented the first one, but after giving a a try at the globals idea and performing a timing comparison, I concluded that the time used in parameter passing must be negligible compared with the processing time, because I noticed no timing difference. The only pitfall I see is that the extra nesting level could pose a memory problem in LSO with the passing of a long b64, but making it global is too yucky. AFAIK Mono strings don't suffer that problem, and using this function in LSO is somewhere between masochist and suicidal anyway. -- [[User:Pedro Oval\|Pedro Oval]] 02:36, 22 December 2010 (UTC)

Strife Onizuka at 22:31, 16 December 2010

2010-12-16T22:31:29Z

← Older revision		Revision as of 15:31, 16 December 2010
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	If you change "T = llList2Integer(x,i);" to "T = llList2Integer(x,~i);" you don't need to reverse the order of x (allowing you to discard the "x = [H4, H3, H2, H1];"). You might find [[User:Strife_Onizuka/int2hexdword]] interesting.		If you change "T = llList2Integer(x,i);" to "T = llList2Integer(x,~i);" you don't need to reverse the order of x (allowing you to discard the "x = [H4, H3, H2, H1];"). You might find [[User:Strife_Onizuka/int2hexdword]] interesting.

	~~The~~ (~~one~~ of ~~the~~) reason(s) LSO is so slow is that it copies every parameter during a function call, if you used a Global for "b64", "H[1-4]" and "i" values it would be much faster (as you would be duplicating the variable fewer times). Of course doing so is evil. -- '''[[User:Strife_Onizuka\|Strife]]''' <sup><small>([[User talk:Strife_Onizuka\|talk]]\|[[Special:Contributions/Strife_Onizuka\|contribs]])</small></sup> 22:23, 16 December 2010 (UTC)		(One of) The reason(s) LSO is so slow is that it copies every parameter during a function call, if you used a Global for "b64", "H[1-4]" and "i" values it would be much faster (as you would be duplicating the variable fewer times). Of course doing so is evil. -- '''[[User:Strife_Onizuka\|Strife]]''' <sup><small>([[User talk:Strife_Onizuka\|talk]]\|[[Special:Contributions/Strife_Onizuka\|contribs]])</small></sup> 22:23, 16 December 2010 (UTC)

Strife Onizuka at 22:23, 16 December 2010

2010-12-16T22:23:42Z

← Older revision		Revision as of 15:23, 16 December 2010
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	If you change "T = llList2Integer(x,i);" to "T = llList2Integer(x,~i);" you don't need to reverse the order of x (allowing you to discard the "x = [H4, H3, H2, H1];"). You might find [[User:Strife_Onizuka/int2hexdword]] interesting.		If you change "T = llList2Integer(x,i);" to "T = llList2Integer(x,~i);" you don't need to reverse the order of x (allowing you to discard the "x = [H4, H3, H2, H1];"). You might find [[User:Strife_Onizuka/int2hexdword]] interesting.

	The (one of the) reason(s) LSO is so slow is that it copies every parameter during a function call, if you used a Global for "b64", "H[1-4]" and "i" values it would be much faster (as you would be duplicating the variable fewer times). Of course doing so is evil.		The (one of the) reason(s) LSO is so slow is that it copies every parameter during a function call, if you used a Global for "b64", "H[1-4]" and "i" values it would be much faster (as you would be duplicating the variable fewer times). Of course doing so is evil. -- '''[[User:Strife_Onizuka\|Strife]]''' <sup><small>([[User talk:Strife_Onizuka\|talk]]\|[[Special:Contributions/Strife_Onizuka\|contribs]])</small></sup> 22:23, 16 December 2010 (UTC)

Strife Onizuka: Suggestions

2010-12-16T22:23:29Z

Suggestions

New page

== Suggestions ==

If you change "T = llList2Integer(x,i);" to "T = llList2Integer(x,~i);" you don't need to reverse the order of x (allowing you to discard the "x = [H4, H3, H2, H1];"). You might find [[User:Strife_Onizuka/int2hexdword]] interesting.

The (one of the) reason(s) LSO is so slow is that it copies every parameter during a function call, if you used a Global for "b64", "H[1-4]" and "i" values it would be much faster (as you would be duplicating the variable fewer times). Of course doing so is evil.