Merge branch 'jk/sha1dc'
[git] / 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 $prereq "$engine grep$GIT_PERF_7820_GREP_OPTS '$pattern'" "
53                                 git -c grep.patternType=$engine grep$GIT_PERF_7820_GREP_OPTS -- '$pattern' >'out.$engine' || :
54                         "
55                 else
56                         for threads in $GIT_PERF_GREP_THREADS
57                         do
58                                 test_perf PTHREADS,$prereq "$engine grep$GIT_PERF_7820_GREP_OPTS '$pattern' with $threads threads" "
59                                         git -c grep.patternType=$engine -c grep.threads=$threads grep$GIT_PERF_7820_GREP_OPTS -- '$pattern' >'out.$engine.$threads' || :
60                                 "
61                         done
62                 fi
63         done
64
65         if ! test_have_prereq PERF_GREP_ENGINES_THREADS
66         then
67                 test_expect_success "assert that all engines found the same for$GIT_PERF_7820_GREP_OPTS '$pattern'" '
68                         test_cmp out.basic out.extended &&
69                         if test_have_prereq PCRE
70                         then
71                                 test_cmp out.basic out.perl
72                         fi
73                 '
74         else
75                 for threads in $GIT_PERF_GREP_THREADS
76                 do
77                         test_expect_success PTHREADS "assert that all engines found the same for$GIT_PERF_7820_GREP_OPTS '$pattern' under threading" "
78                                 test_cmp out.basic.$threads out.extended.$threads &&
79                                 if test_have_prereq PCRE
80                                 then
81                                         test_cmp out.basic.$threads out.perl.$threads
82                                 fi
83                         "
84                 done
85         fi
86 done
87
88 test_done