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Re: Pick overloaded by Rvalue? [message #19280 is a reply to message #19265]

Mon, 24 November 2008 01:18

cbpporter is currently offline

cbpporter
Messages: 1401
Registered: September 2007

Ultimate Contributor

captainc wrote on Sun, 23 November 2008 21:53

The problem with Java/C#/etc.: They require an interpreter and thus will always be slower/require more memory than C++ equivalents.

No, not an interpretor. Just in time compiler. I am a hobbyist compiler technology nerd, and I think that at least .NET just in time compiler can generate code comparable with native compiler. It is theoretically the same optimizer that works on the internal tree, but this time the tree is expressed in CIL. The performance difference comes from start up JIT time, start-up huge library dynamic loading and of course GC and abundance of references and deeper indirection level than in C++ code. If we were to use GC in C++ and program in a style that uses the same number of references and level of indirection, I think C++ would be as slow as C#. But I think that C# is close to the borderline where it is not considered slow. The problem is that it is still to slow to to write a Linux kernel in it and it also lacks some features to become a system programing language. And there is no way I can use it with a clear conscience on a 450Mhz machine, where my optimized C++ code blazes by and uses 1/5 of the memory consumption as the equivalent C# app.

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[Message index]

		Pick overloaded by Rvalue? By: bytefield on Tue, 11 November 2008 23:44
		Re: Pick overloaded by Rvalue? By: mirek on Wed, 12 November 2008 00:29
		Re: Pick overloaded by Rvalue? By: cbpporter on Wed, 12 November 2008 08:01
		Re: Pick overloaded by Rvalue? By: bytefield on Wed, 12 November 2008 10:48
		Re: Pick overloaded by Rvalue? By: mirek on Wed, 12 November 2008 11:00
		Re: Pick overloaded by Rvalue? By: bytefield on Wed, 12 November 2008 12:20
		Re: Pick overloaded by Rvalue? By: mdelfede on Wed, 12 November 2008 16:05
		Re: Pick overloaded by Rvalue? By: Mindtraveller on Wed, 12 November 2008 19:34
		Re: Pick overloaded by Rvalue? By: bytefield on Wed, 12 November 2008 20:33
		Re: Pick overloaded by Rvalue? By: captainc on Wed, 12 November 2008 20:27
		Re: Pick overloaded by Rvalue? By: bytefield on Wed, 12 November 2008 20:37
		Re: Pick overloaded by Rvalue? By: mirek on Wed, 12 November 2008 22:04
		Re: Pick overloaded by Rvalue? By: unodgs on Wed, 12 November 2008 23:46
		Re: Pick overloaded by Rvalue? By: captainc on Thu, 13 November 2008 00:20
		Re: Pick overloaded by Rvalue? By: mirek on Thu, 13 November 2008 14:37
		Re: Pick overloaded by Rvalue? By: mirek on Thu, 13 November 2008 14:38
		Re: Pick overloaded by Rvalue? By: cbpporter on Fri, 21 November 2008 14:17
		Re: Pick overloaded by Rvalue? By: captainc on Fri, 21 November 2008 19:48
		Re: Pick overloaded by Rvalue? By: cbpporter on Sat, 22 November 2008 10:04
		Re: Pick overloaded by Rvalue? By: unodgs on Sat, 22 November 2008 10:49
		Re: Pick overloaded by Rvalue? By: mirek on Sat, 22 November 2008 13:19
		Re: Pick overloaded by Rvalue? By: mirek on Sat, 22 November 2008 13:22
		Re: Pick overloaded by Rvalue? By: unodgs on Sat, 22 November 2008 14:54
		Re: Pick overloaded by Rvalue? By: captainc on Sun, 23 November 2008 20:53
		Re: Pick overloaded by Rvalue? By: cbpporter on Mon, 24 November 2008 01:18
		Re: Pick overloaded by Rvalue? By: bytefield on Mon, 24 November 2008 06:55
		Re: Pick overloaded by Rvalue? By: mirek on Mon, 24 November 2008 08:32
		Re: Pick overloaded by Rvalue? By: mirek on Wed, 12 November 2008 21:54
		Re: Pick overloaded by Rvalue? By: mr_ped on Mon, 24 November 2008 09:05
		Re: Pick overloaded by Rvalue? By: bytefield on Mon, 24 November 2008 10:47
		Re: Pick overloaded by Rvalue? By: mirek on Mon, 24 November 2008 11:59
		Re: Pick overloaded by Rvalue? By: captainc on Mon, 24 November 2008 19:25

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