usr.bin/make/unit-tests/dotwait.mk

   1 # $NetBSD: dotwait.mk,v 1.1 2014/08/21 13:44:51 apb Exp $
   2
   3 THISMAKEFILE:= ${.PARSEDIR}/${.PARSEFILE}
   4
   5 TESTS= simple recursive shared cycle
   6 PAUSE= sleep 1
   7
   8 # Use a .for loop rather than dependencies here, to ensure
   9 # that the tests are run one by one, with parallelism
  10 # only within tests.
  11 # Ignore "--- target ---" lines printed by parallel make.
  12 all:
  13 .for t in ${TESTS}
  14         @${.MAKE} -f ${THISMAKEFILE} -j4 $t | grep -v "^--- "
  15 .endfor
  16
  17 #
  18 # Within each test, the names of the sub-targets follow these
  19 # conventions:
  20 # * If it's expected that two or more targets may be made in parallel,
  21 #   then the target names will differ only in an alphabetic component
  22 #   such as ".a" or ".b".
  23 # * If it's expected that two or more targets should be made in sequence
  24 #   then the target names will differ in numeric components, such that
  25 #   lexical ordering of the target names matches the expected order
  26 #   in which the targets should be made.
  27 #
  28 # Targets may echo ${PARALLEL_TARG} to print a modified version
  29 # of their own name, in which alphabetic components like ".a" or ".b"
  30 # are converted to ".*".  Two targets that are expected to
  31 # be made in parallel will thus print the same strings, so that the
  32 # output is independent of the order in which these targets are made.
  33 #
  34 PARALLEL_TARG= ${.TARGET:C/\.[a-z]/.*/g:Q}
  35 .DEFAULT:
  36         @echo ${PARALLEL_TARG}; ${PAUSE}; echo ${PARALLEL_TARG}
  37 _ECHOUSE: .USE
  38         @echo ${PARALLEL_TARG}; ${PAUSE}; echo ${PARALLEL_TARG}
  39
  40 # simple: no recursion, no cycles
  41 simple: simple.1 .WAIT simple.2
  42
  43 # recursive: all children of the left hand side of the .WAIT
  44 # must be made before any child of the right hand side.
  45 recursive: recursive.1.99 .WAIT recursive.2.99
  46 recursive.1.99: recursive.1.1.a recursive.1.1.b _ECHOUSE
  47 recursive.2.99: recursive.2.1.a recursive.2.1.b _ECHOUSE
  48
  49 # shared: both shared.1.99 and shared.2.99 depend on shared.0.
  50 # shared.0 must be made first, even though it is a child of
  51 # the right hand side of the .WAIT.
  52 shared: shared.1.99 .WAIT shared.2.99
  53 shared.1.99: shared.0 _ECHOUSE
  54 shared.2.99: shared.2.1 shared.0 _ECHOUSE
  55
  56 # cycle: the cyclic dependency must not cause infinite recursion
  57 # leading to stack overflow and a crash.
  58 cycle: cycle.1.99 .WAIT cycle.2.99
  59 cycle.2.99: cycle.2.98 _ECHOUSE
  60 cycle.2.98: cycle.2.97 _ECHOUSE
  61 cycle.2.97: cycle.2.99 _ECHOUSE