cgd
Tue Jan 21 17:18:24 PST 1997
Update of /cvsroot/src/sys/lib/libsa
In directory netbsd1:/var/slash-tmp/cvs-serv7598

Modified Files:
	alloc.c 
Log Message:
Add a whole bunch of features, from Matthias Drochner:
	best-fit, rather than first-fit, algorithm.
	ability to handle free()s with zero size (needed for gzip read
	    support).
	ability to start the heap someplace else (defined by HEAP_START).
	ability to limit growth of the heap (via HEAP_LIMIT).
	debugging sanity checks (ifdef DEBUG).
	allocation tracing support, to help debugging (ifdef ALLOC_TRACE).
and from me:
	ability to pick a (smaller) first-fit algorithm (via ALLOC_FIRST_FIT).
	lots of comments.

If heap limits and all of the debugging features are disabled (the default),
and ALLOC_FIRST_FIT is defined (not the default), compiled with -O on the
alpha the new version is the same (object) size as the old version.