grep: disable threading in non-worktree case

[thirdparty/git.git] / builtin / grep.c

diff --git a/builtin/grep.c b/builtin/grep.c
index 6474eed19e704cc896f996bb5fb040807cfbb99b..9ce064ac1131e9a93383f568bb6f567791740b77 100644 (file)
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -1002,24 +1002,6 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
        if (!opt.fixed && opt.ignore_case)
                opt.regflags |= REG_ICASE;
 
-#ifndef NO_PTHREADS
-       if (online_cpus() == 1)
-               use_threads = 0;
-#else
-       use_threads = 0;
-#endif
-
-       opt.use_threads = use_threads;
-
-#ifndef NO_PTHREADS
-       if (use_threads) {
-               if (opt.pre_context || opt.post_context || opt.file_break ||
-                   opt.funcbody)
-                       skip_first_line = 1;
-               start_threads(&opt);
-       }
-#endif
-
        compile_grep_patterns(&opt);
 
        /* Check revs and then paths */
@@ -1041,6 +1023,24 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
                break;
        }
 
+#ifndef NO_PTHREADS
+       if (list.nr || cached || online_cpus() == 1)
+               use_threads = 0;
+#else
+       use_threads = 0;
+#endif
+
+       opt.use_threads = use_threads;
+
+#ifndef NO_PTHREADS
+       if (use_threads) {
+               if (opt.pre_context || opt.post_context || opt.file_break ||
+                   opt.funcbody)
+                       skip_first_line = 1;
+               start_threads(&opt);
+       }
+#endif
+
        /* The rest are paths */
        if (!seen_dashdash) {
                int j;