CVS commit: src/usr.bin/make/unit-tests

["Roland Illig" <rillig%netbsd.org@localhost>]

Module Name:    src
Committed By:   rillig
Date:           Sat Nov 21 17:44:40 UTC 2020

Modified Files:
        src/usr.bin/make/unit-tests: Makefile

Log Message:
make(1): limit memory usage in tests

There is a suspicious condition in SuffUpdateTarget code that looks wrong
on the first sight.  When removing it though, make allocates huge amounts
of memory.  To stop freezing the whole machine in this situation, limit
the total memory.

The limit of 200000 has been determined experimentally on NetBSD 8.0
x86_64.  With a limit of 100000, make wouldn't even start.  100 MB of
memory is really a lot for such a simple program that according to top(1)
only needs 8 MB.  But 200 MB is still better than 5 GB.

Since the Makefile is used on other platforms as well, via the bmake
distribution, and since every operating system has its own list of ulimit
options, make this configurable.


To generate a diff of this commit:
cvs rdiff -u -r1.212 -r1.213 src/usr.bin/make/unit-tests/Makefile

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.