run_processes_parallel: mark unused callback parameters

Our parallel process API takes several callbacks via function pointers
in the run_process_paralell_opts struct. Not every callback needs every
parameter; let's mark the unused ones to make -Wunused-parameter happy.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/fetch.c

@@ -1890,7 +1890,8 @@ struct parallel_fetch_state {
 	int next, result;
 };
 
-static int fetch_next_remote(struct child_process *cp, struct strbuf *out,
+static int fetch_next_remote(struct child_process *cp,
+			     struct strbuf *out UNUSED,
 			     void *cb, void **task_cb)
 {
 	struct parallel_fetch_state *state = cb;
@@ -1912,7 +1913,8 @@ static int fetch_next_remote(struct child_process *cp, struct strbuf *out,
 	return 1;
 }
 
-static int fetch_failed_to_start(struct strbuf *out, void *cb, void *task_cb)
+static int fetch_failed_to_start(struct strbuf *out UNUSED,
+				 void *cb, void *task_cb)
 {
 	struct parallel_fetch_state *state = cb;
 	const char *remote = task_cb;

builtin/submodule--helper.c

@@ -2132,9 +2132,9 @@ static int update_clone_get_next_task(struct child_process *child,
 	return 0;
 }
 
-static int update_clone_start_failure(struct strbuf *err,
+static int update_clone_start_failure(struct strbuf *err UNUSED,
 				      void *suc_cb,
-				      void *idx_task_cb)
+				      void *idx_task_cb UNUSED)
 {
 	struct submodule_update_clone *suc = suc_cb;
 

hook.c

@@ -43,9 +43,9 @@ int hook_exists(const char *name)
 }
 
 static int pick_next_hook(struct child_process *cp,
-			  struct strbuf *out,
+			  struct strbuf *out UNUSED,
 			  void *pp_cb,
-			  void **pp_task_cb)
+			  void **pp_task_cb UNUSED)
 {
 	struct hook_cb_data *hook_cb = pp_cb;
 	const char *hook_path = hook_cb->hook_path;
@@ -77,9 +77,9 @@ static int pick_next_hook(struct child_process *cp,
 	return 1;
 }
 
-static int notify_start_failure(struct strbuf *out,
+static int notify_start_failure(struct strbuf *out UNUSED,
 				void *pp_cb,
-				void *pp_task_cp)
+				void *pp_task_cp UNUSED)
 {
 	struct hook_cb_data *hook_cb = pp_cb;
 
@@ -89,9 +89,9 @@ static int notify_start_failure(struct strbuf *out,
 }
 
 static int notify_hook_finished(int result,
-				struct strbuf *out,
+				struct strbuf *out UNUSED,
 				void *pp_cb,
-				void *pp_task_cb)
+				void *pp_task_cb UNUSED)
 {
 	struct hook_cb_data *hook_cb = pp_cb;
 	struct run_hooks_opt *opt = hook_cb->options;

submodule.c

@@ -1739,7 +1739,7 @@ static int get_next_submodule(struct child_process *cp, struct strbuf *err,
 	return 0;
 }
 
-static int fetch_start_failure(struct strbuf *err,
+static int fetch_start_failure(struct strbuf *err UNUSED,
 			       void *cb, void *task_cb)
 {
 	struct submodule_parallel_fetch *spf = cb;
@@ -1760,7 +1760,7 @@ static int commit_missing_in_sub(const struct object_id *oid, void *data)
 	return type != OBJ_COMMIT;
 }
 
-static int fetch_finish(int retvalue, struct strbuf *err,
+static int fetch_finish(int retvalue, struct strbuf *err UNUSED,
 			void *cb, void *task_cb)
 {
 	struct submodule_parallel_fetch *spf = cb;

t/helper/test-run-command.c

@@ -24,7 +24,7 @@ static int number_callbacks;
 static int parallel_next(struct child_process *cp,
 			 struct strbuf *err,
 			 void *cb,
-			 void **task_cb)
+			 void **task_cb UNUSED)
 {
 	struct child_process *d = cb;
 	if (number_callbacks >= 4)
@@ -40,10 +40,10 @@ static int parallel_next(struct child_process *cp,
 	return 1;
 }
 
-static int no_job(struct child_process *cp,
+static int no_job(struct child_process *cp UNUSED,
 		  struct strbuf *err,
-		  void *cb,
-		  void **task_cb)
+		  void *cb UNUSED,
+		  void **task_cb UNUSED)
 {
 	if (err)
 		strbuf_addstr(err, "no further jobs available\n");
@@ -52,10 +52,10 @@ static int no_job(struct child_process *cp,
 	return 0;
 }
 
-static int task_finished(int result,
+static int task_finished(int result UNUSED,
 			 struct strbuf *err,
-			 void *pp_cb,
-			 void *pp_task_cb)
+			 void *pp_cb UNUSED,
+			 void *pp_task_cb UNUSED)
 {
 	if (err)
 		strbuf_addstr(err, "asking for a quick stop\n");