It isn't clear that it ever worked, if it did it has almost certainly
bitrotted in the last 12 years. I'm not even sure all the required
components were present.
I suspect it was written to attempt to use a 'farm' of diskless sun3s.
In any case the apparant random assignment fo jobs to other systems doesn't
actually seem like a good idea!
Things like 'distcc' han be used to help slow systems run native builds.
Removing this code also simplifies make, and should let me speed up some of
its processing - without worrying about bitrotting it further.
push a byte through the (now badly named) exit_pipe and call JobRestartJobs()
from the main code path when poll() wakes up.
Part of a plan to remove JobSigLock() and the zillions of system calls
it does.
of trying to de-jobify the make.
You can now put .NOTPARALLEL in a submake of a recursive make (where it is
using a job-token pipe from the outer make and have it only run a single job.
You can also specify .NOTPARRALEL in the root makefile of a large recursive
make and have the submakes run multiple commands.
Add some diagnostics printfs (enabled with -dp) to the parser.
the first one for each make. This significantly speeds up the detection
of errors in other branches of the make (ie those running in a different
make process). The cost of reading and writing a byte from the pipe
should be insignificant.
Defer replacing job tokens until we've decided there is an error.
If we detect an error in another branch of the make, then call Fatal(),
setting 'aborting' and failing to return a token leads to infinite loops.
Now parallel makes actually stop with the failing command on the screen.
job_pipe and collect another one for the next job.
If we are aborting, remove all the 'normal' job tokens and add an 'error' one.
If we get an 'error' token, remove any other tokens, re-insert the error
token and exit (with error 'cos that is easier).
Add the current pid to some of the DEBUG(JOB) traces.
Combined effect is that parallel makes actually stop some fairly shortly
after an error, rather than running on long enough to fill the scrollback.
output in parallel makes.
After all with -s you wouldn't know the command for a non-parallel make.
Makes (sic) the output of parallel NetBSD build fathomable.
mode, use the ignErr template for the command as shell doesn't like an empty
construct of the form { } || <something>. Fixes build breakage on cats
distrib where a command ends up expanding to nothing.
Its not posix compliant and serves very little purpose.
With this change compat and jobs modes are consistent wrt how
they treat each line of a script.
Add support for the '+' command line prefix as required by posix.
Lines prefixed with '+' are executed even when -n is given.
[Actually posix says they should also be done for -q and -t]
PR:
Reviewed by: jmc
Instead of adding MAKE_BOOTSTRAP for hosted environments, i.e., when
you want things simple, instead add MAKE_NATIVE to get those hugely
important features like __RCSID().
It's now possible to build make on some hosts with: cc *.c */*.c
Using -e in sh/ksh to stop on error doesn't work with grouped commands. At
least for any SUSE compliant sh(1). Instead, extend the Shell struct and add
errOut which provides a template to use to check error status from commands.
executed the make job with sigprocmask(SIG_BLOCK) in effect for a
number of signals including SIGCHLD. This caused recursive submakes
of the make process in question not to receive SIGCHLDs when their
jobs exited. This was a second, independent cause of bin/18895 in
addition to the race condition already fixed. Fixed by unblocking all
signals before executing the job.
seconds if a SIGCHLD arrived while make was not blocked in poll(),
by making the SIGCHLD handler write to a pipe included in the poll.
Avoided the need to implement a duplicate fix for the USE_SELECT case
by emulating poll() in terms of select() when USE_SELECT is defined.
Fixes bin/18895.
while setting up a child process. This prevents the major sources of
list inconsistencies that may result from doing list manipulations
from a signal handler.
XXX - all Lst_*() operations are at risk; look for ways to avoid touching
so much global state from the signal handlers.
- don't block the signal we're about to send to ourselves to
take the default action for
- restore the signal handler for the current signal
- remove duplicate sigprocmask() call
As a result, restoring the SIGTSTP handler in JobContinueSig() is no longer
necessary.
dsl