Linked by Thom Holwerda on Tue 2nd Jan 2007 21:39 UTC
"D is a systems programming language. Its focus is on combining the power and high performance of C and C++ with the programmer productivity of modern languages like Ruby and Python. Special attention is given to the needs of quality assurance, documentation, management, portability and reliability. D is statically typed, and compiles direct to native code. It's multiparadigm: supporting imperative, object oriented, and template metaprogramming styles. It's a member of the C syntax family, and its look and feel is very close to C++'s. See this comparison of D with C, C++, C#, and Java."
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Member since:
2005-07-06
As rayiner said, GC doesn't belong in the kernel, but the kernel VM manager should definitely cooperate better with the GCs as how much memory should be allocated before doing a garbage collection depends on the memory pressure:
- allocate too little memory and the GC will waste CPU time doing garbage collection while there is still a lot of "free" memory available.
- allocate too much memory and some pages could be paged out before the GC reclaim memory which is dumb as the GC will have to swap-in again the page to do its collection pass to release memory, a kind of trashing which could have been avoided in some case.
Currently system administrator have to hand-tune the memory used by the GC to make the system works better which is quite suboptimal..
The only paper I know (there are probably more papers, but it's the only one I know) about this research topic is here:
http://www.cs.umass.edu/~emery/pubs/04-16.pdf
They patched a Linux kernel and got interesting numbers.
Note that in GCs for 'client type applications' you may still want to limit the size of the memory used by the GC even though there is still free memory so that each GC-pass do not take too much time, avoiding a freeze for the user.