perf: amend the grep tests to test grep.threads

diff --git a/t/perf/p7821-grep-engines-fixed.sh b/t/perf/p7821-grep-engines-fixed.sh
index c7ef1e198fb9b803bcc5ed08fa553736ce5442d0..61e41b82cffa3721fbbc724fc699055c9457453a 100755 (executable)
--- a/t/perf/p7821-grep-engines-fixed.sh
+++ b/t/perf/p7821-grep-engines-fixed.sh
@@ -6,6 +6,9 @@ Set GIT_PERF_7821_GREP_OPTS in the environment to pass options to
 git-grep. Make sure to include a leading space,
 e.g. GIT_PERF_7821_GREP_OPTS=' -w'. See p7820-grep-engines.sh for more
 options to try.
+
+If GIT_PERF_7821_THREADS is set to a list of threads (e.g. '1 4 8'
+etc.) we will test the patterns under those numbers of threads.
 "
 
 . ./perf-lib.sh
@@ -13,6 +16,11 @@ options to try.
 test_perf_large_repo
 test_checkout_worktree
 
+if test -n "$GIT_PERF_GREP_THREADS"
+then
+       test_set_prereq PERF_GREP_ENGINES_THREADS
+fi
+
 for pattern in 'int' 'uncommon' 'æ'
 do
        for engine in fixed basic extended perl
@@ -23,19 +31,44 @@ do
                else
                        prereq=""
                fi
-               test_perf $prereq "$engine grep$GIT_PERF_7821_GREP_OPTS $pattern" "
-                       git -c grep.patternType=$engine grep$GIT_PERF_7821_GREP_OPTS $pattern >'out.$engine' || :
-               "
-       done
-
-       test_expect_success "assert that all engines found the same for$GIT_PERF_7821_GREP_OPTS $pattern" '
-               test_cmp out.fixed out.basic &&
-               test_cmp out.fixed out.extended &&
-               if test_have_prereq PCRE
+               if ! test_have_prereq PERF_GREP_ENGINES_THREADS
                then
-                       test_cmp out.fixed out.perl
+                       test_perf $prereq "$engine grep$GIT_PERF_7821_GREP_OPTS $pattern" "
+                               git -c grep.patternType=$engine grep$GIT_PERF_7821_GREP_OPTS $pattern >'out.$engine' || :
+                       "
+               else
+                       for threads in $GIT_PERF_GREP_THREADS
+                       do
+                               test_perf PTHREADS,$prereq "$engine grep$GIT_PERF_7821_GREP_OPTS $pattern with $threads threads" "
+                                       git -c grep.patternType=$engine -c grep.threads=$threads grep$GIT_PERF_7821_GREP_OPTS $pattern >'out.$engine.$threads' || :
+                               "
+                       done
                fi
-       '
+       done
+
+       if ! test_have_prereq PERF_GREP_ENGINES_THREADS
+       then
+               test_expect_success "assert that all engines found the same for$GIT_PERF_7821_GREP_OPTS $pattern" '
+                       test_cmp out.fixed out.basic &&
+                       test_cmp out.fixed out.extended &&
+                       if test_have_prereq PCRE
+                       then
+                               test_cmp out.fixed out.perl
+                       fi
+               '
+       else
+               for threads in $GIT_PERF_GREP_THREADS
+               do
+                       test_expect_success PTHREADS "assert that all engines found the same for$GIT_PERF_7821_GREP_OPTS $pattern under threading" "
+                               test_cmp out.fixed.$threads out.basic.$threads &&
+                               test_cmp out.fixed.$threads out.extended.$threads &&
+                               if test_have_prereq PCRE
+                               then
+                                       test_cmp out.fixed.$threads out.perl.$threads
+                               fi
+                       "
+               done
+       fi
 done
 
 test_done