On 23/04/11 02:22, Dan McGee wrote:
On Fri, Apr 22, 2011 at 11:16 AM, Dan McGee<[email protected]> wrote:
This enables parallel integrity checks in makepkg within a given family
of integrity sums. Subshell jobs for each source file are kicked off and
run in parallel, and then we wait for each of them in turn to complete
and print the same information as before.
Note that programming sense says this loop should be done differently
for filesystem access reasons; doing all checks for a given file would
make more sense rather than running through the filelist multiple times.
However, that would be a very different patch than what this is trying
to accomplish.
Two other things worth mentioning:
1. We don't limit the number of jobs here in any way, so in theory you
could have a lot...
2. Applying this to source file extraction would be the next logical
step, as that is a much slower part than this, and we might as well
use more cores since all extraction programs we use are
single-threaded.
I'd be very careful about applying this to extraction. The main package
I maintain where this would be useful is gcc, but there the source files
gave lots of overlapping directories and I would want to be sure no race
condition occurred in extracting them.
Allan
