Unify code paths of threaded greps

There were three awfully similar code paths ending the threaded grep. It
is better to avoid duplicated code, though.

This change might very well prevent a race, where the grep patterns were
free()d before waiting that all threads finished.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/grep.c b/builtin/grep.c
index 5b8879f7b3d5440f18734ad03b196a6238964ec2..211121289049d9e3d6422b4a0dfc43146850b0b2 100644 (file)
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -590,7 +590,6 @@ static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
                if (hit && opt->status_only)
                        break;
        }
-       free_grep_patterns(opt);
        return hit;
 }
 
@@ -708,7 +707,6 @@ static int grep_directory(struct grep_opt *opt, const char **paths)
                if (hit && opt->status_only)
                        break;
        }
-       free_grep_patterns(opt);
        return hit;
 }
 
@@ -1019,32 +1017,22 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
        }
 
        if (!use_index) {
-               int hit;
                if (cached)
                        die("--cached cannot be used with --no-index.");
                if (list.nr)
                        die("--no-index cannot be used with revs.");
                hit = grep_directory(&opt, paths);
-               if (use_threads)
-                       hit |= wait_all();
-               return !hit;
-       }
-
-       if (!list.nr) {
-               int hit;
+       } else if (!list.nr) {
                if (!cached)
                        setup_work_tree();
 
                hit = grep_cache(&opt, paths, cached);
-               if (use_threads)
-                       hit |= wait_all();
-               return !hit;
+       } else {
+               if (cached)
+                       die("both --cached and trees are given.");
+               hit = grep_objects(&opt, paths, &list);
        }
 
-       if (cached)
-               die("both --cached and trees are given.");
-       hit = grep_objects(&opt, paths, &list);
-
        if (use_threads)
                hit |= wait_all();
        free_grep_patterns(&opt);