2020-11-07 19:39:21 +00:00
|
|
|
# $NetBSD: dotwait.mk,v 1.3 2020/10/24 08:50:17 rillig Exp $
|
2012-06-08 21:57:36 +00:00
|
|
|
|
2020-11-07 19:39:21 +00:00
|
|
|
THISMAKEFILE:= ${.PARSEDIR}/${.PARSEFILE}
|
2012-06-08 21:57:36 +00:00
|
|
|
|
2020-11-07 19:39:21 +00:00
|
|
|
TESTS= simple recursive shared cycle
|
|
|
|
PAUSE= sleep 1
|
2012-06-08 21:57:36 +00:00
|
|
|
|
|
|
|
# Use a .for loop rather than dependencies here, to ensure
|
|
|
|
# that the tests are run one by one, with parallelism
|
|
|
|
# only within tests.
|
|
|
|
# Ignore "--- target ---" lines printed by parallel make.
|
|
|
|
all:
|
|
|
|
.for t in ${TESTS}
|
2017-11-01 23:16:32 +00:00
|
|
|
@${.MAKE} -f ${THISMAKEFILE} -j4 $t 2>&1 | grep -v "^--- "
|
2012-06-08 21:57:36 +00:00
|
|
|
.endfor
|
|
|
|
|
|
|
|
#
|
|
|
|
# Within each test, the names of the sub-targets follow these
|
|
|
|
# conventions:
|
|
|
|
# * If it's expected that two or more targets may be made in parallel,
|
|
|
|
# then the target names will differ only in an alphabetic component
|
|
|
|
# such as ".a" or ".b".
|
|
|
|
# * If it's expected that two or more targets should be made in sequence
|
|
|
|
# then the target names will differ in numeric components, such that
|
|
|
|
# lexical ordering of the target names matches the expected order
|
|
|
|
# in which the targets should be made.
|
|
|
|
#
|
|
|
|
# Targets may echo ${PARALLEL_TARG} to print a modified version
|
|
|
|
# of their own name, in which alphabetic components like ".a" or ".b"
|
|
|
|
# are converted to ".*". Two targets that are expected to
|
|
|
|
# be made in parallel will thus print the same strings, so that the
|
|
|
|
# output is independent of the order in which these targets are made.
|
|
|
|
#
|
|
|
|
PARALLEL_TARG= ${.TARGET:C/\.[a-z]/.*/g:Q}
|
|
|
|
.DEFAULT:
|
|
|
|
@echo ${PARALLEL_TARG}; ${PAUSE}; echo ${PARALLEL_TARG}
|
|
|
|
_ECHOUSE: .USE
|
|
|
|
@echo ${PARALLEL_TARG}; ${PAUSE}; echo ${PARALLEL_TARG}
|
|
|
|
|
|
|
|
# simple: no recursion, no cycles
|
|
|
|
simple: simple.1 .WAIT simple.2
|
|
|
|
|
|
|
|
# recursive: all children of the left hand side of the .WAIT
|
|
|
|
# must be made before any child of the right hand side.
|
|
|
|
recursive: recursive.1.99 .WAIT recursive.2.99
|
|
|
|
recursive.1.99: recursive.1.1.a recursive.1.1.b _ECHOUSE
|
|
|
|
recursive.2.99: recursive.2.1.a recursive.2.1.b _ECHOUSE
|
|
|
|
|
|
|
|
# shared: both shared.1.99 and shared.2.99 depend on shared.0.
|
|
|
|
# shared.0 must be made first, even though it is a child of
|
|
|
|
# the right hand side of the .WAIT.
|
|
|
|
shared: shared.1.99 .WAIT shared.2.99
|
|
|
|
shared.1.99: shared.0 _ECHOUSE
|
|
|
|
shared.2.99: shared.2.1 shared.0 _ECHOUSE
|
|
|
|
|
|
|
|
# cycle: the cyclic dependency must not cause infinite recursion
|
|
|
|
# leading to stack overflow and a crash.
|
|
|
|
cycle: cycle.1.99 .WAIT cycle.2.99
|
|
|
|
cycle.2.99: cycle.2.98 _ECHOUSE
|
|
|
|
cycle.2.98: cycle.2.97 _ECHOUSE
|
|
|
|
cycle.2.97: cycle.2.99 _ECHOUSE
|