Junio C Hamano <gits...@pobox.com> writes:

>> This patch series replaces my earlier
>>      * jh/memihash-opt (2017-02-17) 5 commits
>> patch series.
>
> Ahh.  I was scratching my head trying to remember why some of these
> look so familiar.  [PATCH v2 ...] would have helped.
>
> Thank you for an update.
One notable difference I noticed since the previous round is that
this no longer adds precomputed hash to "struct cache_entry".  As
you are aiming to manage an index with a large number of entries,
this is a welcome change that makes sense.

$ make NO_PTHREADS=NoThanks name-hash.o
    CC name-hash.o
name-hash.c: In function 'lazy_init_name_hash':
name-hash.c:573:3: error: implicit declaration of function 
'threaded_lazy_init_name_hash' [-Werror=implicit-function-declaration]
   threaded_lazy_init_name_hash(istate);
   ^
name-hash.c: In function 'test_lazy_init_name_hash':
name-hash.c:595:2: error: 'lazy_nr_dir_threads' undeclared (first use in this 
function)
  lazy_nr_dir_threads = 0;
  ^
name-hash.c:595:2: note: each undeclared identifier is reported only once for 
each function it appears in
name-hash.c:596:2: error: 'lazy_try_threaded' undeclared (first use in this 
function)
  lazy_try_threaded = try_threaded;
  ^
name-hash.c:601:1: error: control reaches end of non-void function 
[-Werror=return-type]
 }
 ^
cc1: all warnings being treated as errors
make: *** [name-hash.o] Error 1

still has to be addressed.  Perhaps squash pieces of these into
appropriate patches in the series?

 name-hash.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/name-hash.c b/name-hash.c
index a5826505e0..725ac22886 100644
--- a/name-hash.c
+++ b/name-hash.c
@@ -118,9 +118,16 @@ static int cache_entry_cmp(const struct cache_entry *ce1,
        return remove ? !(ce1 == ce2) : 0;
 }
 
+static int lazy_try_threaded = 1;
+static int lazy_nr_dir_threads = 0;
 
 #ifdef NO_PTHREADS
 
+static void threaded_lazy_init_name_hash(struct index_state *istate)
+{
+       ; /* nothing */
+}
+
 static int lookup_lazy_params(struct index_state *istate)
 {
        return 0;
@@ -153,8 +160,6 @@ static int lookup_lazy_params(struct index_state *istate)
  */
 #define LAZY_MAX_MUTEX   (32)
 
-static int lazy_try_threaded = 1;
-static int lazy_nr_dir_threads = 0;
 static pthread_mutex_t *lazy_dir_mutex_array;
 
 /*

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