kc3-lang/automake/t/perf/cond.sh

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• Hash : ff022f46
  Author :
  Date : 2012-05-29T11:58:02
  

  perf: beginning of a performance testsuite
  
  Some tests in the Automake testsuite already aims only at verifying
  the performance, rather than the correctness, of some operations.
  Still, they are somewhat shoehorned and forced into the PASS/FAIL
  framework (say, with the 'ulimit' shell builtin used to verify some
  operation doesn't take up too much time or memory), but that is
  conceptually a stretch, and has already caused problems in practice
  (see automake bug#11512 for an example).
  
  So we start moving the "performance tests" out of the testsuite proper,
  and make them run only "on demand" (when the user exports the variable
  'AM_TESTSUITE_PERF' to "yes").  Ideally, we should provide those tests
  with a custom runner/driver that measures and displays the relevant
  performance information, but doing that correctly and with the right
  APIs is definitely more difficult, so we leave it for a later step
  (an hope we'll take such a step eventually).
  
  * t/cond29.sh: Move ...
  * t/perf/cond.sh: ... here, and adjust.
  * t/testsuite-recheck-speed.sh: Move ...
  * t/perf/testsuite-recheck.sh: ... here.
  * t/testsuite-summary-speed.sh: Move ...
  * t/perf/testsuite-summary.sh: ... here.
  * t/list-of-tests.mk (perf_TESTS): New variable, listing the tests in
  the 't/perf' directory.
  (handwritten_TESTS): Adjust.
  * defs: Skip any tests in the 't/perf/' subdirectory unless the
  'AM_TESTSUITE_PERF' variable is set to "yes" or "y".
  * .gitignore: Update.
  
  Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
  

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• t/perf/cond.sh

• #!/bin/sh
  # Copyright (C) 2003-2012 Free Software Foundation, Inc.
  #
  # This program is free software; you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation; either version 2, or (at your option)
  # any later version.
  #
  # This program is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  
  # Check that many conditions do not lead to combinatorial explosion.
  # (This is related to PR/352.)
  
  . ./defs || Exit 1
  
  echo AC_PROG_CC >>configure.ac
  
  cat >Makefile.am <<EOF
  bin_PROGRAMS = a
  a02_LDADD =
  a03_SOURCES =
  EOF
  
  # On this test, Automake 1.7.x would compute all 2**24 = 16777216
  # possible combinations of conditionals (it would do this five times,
  # to define a01_DEPENDENCIES, a02_DEPENDENCIES, a03_OBJECTS,
  # a04_OBJECTS, and to rewrite bin_PROGRAM), eating all memory, swap,
  # or cpu time it can found.
  
  for i in \
    01 02 03 04 05 06 07 08 09 10 \
    11 12 13 14 15 16 17 18 19 20 \
    21 22 23 24
  do
    unindent >>Makefile.am <<EOF
      if C$i
      bin_PROGRAMS += a$i
      a01_LDADD = foo${i}.o
      a02_LDADD += bar${i}.o
      a03_SOURCES += baz${i}.c
      a04_SOURCES = quux${i}.c
      endif C$i
  EOF
    echo "AM_CONDITIONAL([C$i], [:])" >>configure.ac
  done
  
  $ACLOCAL
  $AUTOMAKE
  
  :
  

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