src/lib/libc/stdlib/malloc.3, branch release/7.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2008-02-24T05:45:17+00:00

'RELENG_7_0_0_RELEASE'.

This commit was manufactured to restore the state of the 7.0-RELEASE image.

Add information about the implications of using mmap(2) instead of sbrk(2).

2007-06-15T22:32:33+00:00

Submitted by:	bmah, jhb

Update the IMPLEMENTATION NOTES section to reflect recent malloc

2007-03-28T04:34:19+00:00

enhancements.

Markup fixes.

2006-09-17T21:27:35+00:00

s/soley/solely

2006-04-13T18:19:44+00:00

Add malloc_usable_size() to the RETURN VALUES section.

2006-04-04T20:27:53+00:00

Add malloc_usable_size(3).

2006-03-28T22:16:04+00:00

Discussed with:		arch@

Modify allocation policy, in order to avoid excessive fragmentation for

2006-03-17T09:00:27+00:00

allocation patterns that involve a relatively even mixture of many
different size classes.

Reduce the chunk size from 16 MB to 2 MB.  Since chunks are now carved up
using an address-ordered first best fit policy, VM map fragmentation is
much less likely, which makes smaller chunks not as much of a risk.  This
reduces the virtual memory size of most applications.

Remove redzones, since program buffer overruns are no longer as likely to
corrupt malloc data structures.

Remove the C MALLOC_OPTIONS flag, and add H and S.

Expand contractions.

2006-02-01T14:33:14+00:00

Replace malloc(), calloc(), posix_memalign(), realloc(), and free() with

2006-01-13T18:38:56+00:00

a scalable concurrent allocator implementation.

Reviewed by:	current@
Approved by:	phk, markm (mentor)