[resend] Allow use of MAP_TRYFIXED for better mmap()

Todd Vierling tv at pobox.com
Fri Aug 29 18:17:14 CDT 2003

On Fri, 29 Aug 2003, Dustin Navea wrote:

: Shouldnt something like this added to the loader work for a runtime check?
: (note im not using proper function names or anything, just an example)
: if (running_on_netbsd && version >= first_version_that_supports_MAP_TRYFIXED)
:     #define can_use_MAP_TRYFIXED

That kind of OS dependency runtime check does not belong in an application
that runs on multiple OS's.  In every sane application, both
"running_on_netbsd" AND "version" are constants, so the test is either
always true or always false.

What it comes down to is this:  NetBSD doesn't do all the kernel and libc
shuffling of Linux.  Its version numbers are quite well defined, and it's
trivial to state what version was used to compile a binary.  So the patch is
Just Fine as-is, and needs no further pollution.

-- Todd Vierling <tv at pobox.com>

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