t/perf/p7820-grep-engines.sh

   1 #!/bin/sh
   2
   3 test_description="Comparison of git-grep's regex engines
   4
   5 Set GIT_PERF_7820_GREP_OPTS in the environment to pass options to
   6 git-grep. Make sure to include a leading space,
   7 e.g. GIT_PERF_7820_GREP_OPTS=' -i'. Some options to try:
   8
   9         -i
  10         -w
  11         -v
  12         -vi
  13         -vw
  14         -viw
  15
  16 If GIT_PERF_GREP_THREADS is set to a list of threads (e.g. '1 4 8'
  17 etc.) we will test the patterns under those numbers of threads.
  18 "
  19
  20 . ./perf-lib.sh
  21
  22 test_perf_large_repo
  23 test_checkout_worktree
  24
  25 if test -n "$GIT_PERF_GREP_THREADS"
  26 then
  27         test_set_prereq PERF_GREP_ENGINES_THREADS
  28 fi
  29
  30 for pattern in \
  31         'how.to' \
  32         '^how to' \
  33         '[how] to' \
  34         '\(e.t[^ ]*\|v.ry\) rare' \
  35         'm\(ú\|u\)lt.b\(æ\|y\)te'
  36 do
  37         for engine in basic extended perl
  38         do
  39                 if test $engine != "basic"
  40                 then
  41                         # Poor man's basic -> extended converter.
  42                         pattern=$(echo "$pattern" | sed 's/\\//g')
  43                 fi
  44                 if test $engine = "perl" && ! test_have_prereq PCRE
  45                 then
  46                         prereq="PCRE"
  47                 else
  48                         prereq=""
  49                 fi
  50                 if ! test_have_prereq PERF_GREP_ENGINES_THREADS
  51                 then
  52                         test_perf "$engine grep$GIT_PERF_7820_GREP_OPTS '$pattern'" \
  53                                 --prereq "$prereq" "
  54                                 git -c grep.patternType=$engine grep$GIT_PERF_7820_GREP_OPTS -- '$pattern' >'out.$engine' || :
  55                         "
  56                 else
  57                         for threads in $GIT_PERF_GREP_THREADS
  58                         do
  59                                 test_perf "$engine grep$GIT_PERF_7820_GREP_OPTS '$pattern' with $threads threads"
  60                                         --prereq PTHREADS,$prereq "
  61                                         git -c grep.patternType=$engine -c grep.threads=$threads grep$GIT_PERF_7820_GREP_OPTS -- '$pattern' >'out.$engine.$threads' || :
  62                                 "
  63                         done
  64                 fi
  65         done
  66
  67         if ! test_have_prereq PERF_GREP_ENGINES_THREADS
  68         then
  69                 test_expect_success "assert that all engines found the same for$GIT_PERF_7820_GREP_OPTS '$pattern'" '
  70                         test_cmp out.basic out.extended &&
  71                         if test_have_prereq PCRE
  72                         then
  73                                 test_cmp out.basic out.perl
  74                         fi
  75                 '
  76         else
  77                 for threads in $GIT_PERF_GREP_THREADS
  78                 do
  79                         test_expect_success PTHREADS "assert that all engines found the same for$GIT_PERF_7820_GREP_OPTS '$pattern' under threading" "
  80                                 test_cmp out.basic.$threads out.extended.$threads &&
  81                                 if test_have_prereq PCRE
  82                                 then
  83                                         test_cmp out.basic.$threads out.perl.$threads
  84                                 fi
  85                         "
  86                 done
  87         fi
  88 done
  89
  90 test_done