The [new] and constructor/destructor operations create hidden memory
allocations in C++ that can blow performance in kernel "fast paths".
Writing kernel code in C++ is never a good idea because of this problem,
and the fact that with function overloading, it's possible for someone
to write code that is so difficult to follow, it's unmaintainable. MS
wrote a large portion of W2K in C++, which is one reason it's hard to
debug, and slow. C++ also puts in jump tables with mangled names, and
is very difficult to debug at the assembler level.
C++ is very good for application programmers who reuse a lot of code
because it allows the creation of building block libraries -- it's not
good for kernel development, IMHO where speed and supportability is more
important that modularity....
I think that perhaps in the beginning C and C++ were not languages --
they were grades (snicker, snicker).
:-)
Jeff
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This archive was generated by hypermail 2b29 : Sun Oct 15 2000 - 21:00:29 EST