dd357e70e7
Whew, it was nip-and-tuck there for awhile but finally we solved the SIGWINCH overload problem one finds with most X window managers. Now if a window manager should try to inundate ol' top with repeated SIGWINCH signals they won't even be received so can't impact us at all. And we achieve this miracle having never even issued a sigprocmask, so all the top code executes with signals totally unblocked. Intuition suggests it probably rubs even more salt in the wound, but au contraire mon ami! The key to our success was simply trading the 'select' call for its cousin 'pselect'. Not only does that call provide nanosecond granularity (vs. the former's usec) but it takes a sigset_t parm which can then atomically block the troublesome SIGWINCH guy until user input or optional timeout. Net result? No more signal overload! Now, if only we could just coax all terminal emulators into one identical standard buffering scheme plus find some way to emulate the most recent SIGWINCH, it would be perfect. We would then obviate the user requirement of typing yet 1 more key before seeing proper results. (everything is perfectly justified plus right margins) (are completely filled, but of course it must be luck) Reference(s): http://www.freelists.org/post/procps/unwanted-topinspect-window-enclosure-with-the-terminal-size-change http://www.freelists.org/post/procps/Sourceforge-project,7 Signed-off-by: Jim Warner <james.warner@comcast.net>
COMPATIBILITY
This code is intended for use with Linux 2.6.xx, 3.x and
hopefully all future kernels.
INSTALLATION
If you are using git version of the project you need extra step.
./autogen.sh
After that, and everyone using .tar.xz version of procps-ng, can
do normal build. Read './configure --help' to select options for
your needs.
./configure
make
make install
If you have DejaGNU installed you can run optional test suite.
make check
HOW TO CONTRIBUTE
See Documentation/BUGS file.
PACKAGING
If you are a downstream maintainer (packager) for a Linux
distribution, please avoid causing troubles. This section
applies to you.
Avoid maintaining distribution specific patches. Send your
patches to upstream, where they are at least reviewed, if not
included.
Please forward bug reports. If your bug database is public and
busy enough to bother with, please make this known. Follow
Debian's lead in making the bug database easy to comment on via
email without need for an account.
For normal packages, ensure that you do not add debugging flags
to the CFLAGS variable.
UPSTREAM & BUG REPORTS
procps-ng <procps@freelists.org>