Save one allocation by init-int instead of creating closure

1 files changed, 20 insertions, 17 deletions

diff --git a/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c b/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c
index 302b73e5e8..3ff081a514 100644
--- a/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c
+++ b/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c
@@ -32,6 +32,7 @@
 #include "src/core/ext/filters/client_channel/parse_address.h"
 #include "src/core/ext/filters/client_channel/resolver_registry.h"
 #include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/iomgr/closure.h"
 #include "src/core/lib/iomgr/combiner.h"
 #include "src/core/lib/iomgr/resolve_address.h"
 #include "src/core/lib/iomgr/unix_sockets_posix.h"
@@ -150,25 +151,26 @@ void grpc_fake_resolver_response_generator_unref(
   }
 }
 
-typedef struct set_response_cb_arg {
+typedef struct set_response_closure_arg {
+  grpc_closure set_response_closure;
   grpc_fake_resolver_response_generator* generator;
   grpc_channel_args* next_response;
-} set_response_cb_arg;
+} set_response_closure_arg;
 
-static void set_response_cb(grpc_exec_ctx* exec_ctx, void* arg,
-                            grpc_error* error) {
-  set_response_cb_arg* cb_arg = arg;
-  grpc_fake_resolver_response_generator* generator = cb_arg->generator;
+static void set_response_closure_fn(grpc_exec_ctx* exec_ctx, void* arg,
+                                    grpc_error* error) {
+  set_response_closure_arg* closure_arg = arg;
+  grpc_fake_resolver_response_generator* generator = closure_arg->generator;
   fake_resolver* r = generator->resolver;
   if (r->next_results != NULL) {
     grpc_channel_args_destroy(exec_ctx, r->next_results);
   }
-  r->next_results = cb_arg->next_response;
+  r->next_results = closure_arg->next_response;
   if (r->results_upon_error != NULL) {
     grpc_channel_args_destroy(exec_ctx, r->results_upon_error);
   }
-  r->results_upon_error = grpc_channel_args_copy(cb_arg->next_response);
-  gpr_free(cb_arg);
+  r->results_upon_error = grpc_channel_args_copy(closure_arg->next_response);
+  gpr_free(closure_arg);
   fake_resolver_maybe_finish_next_locked(exec_ctx, r);
 }
 
@@ -176,14 +178,15 @@ void grpc_fake_resolver_response_generator_set_response(
     grpc_exec_ctx* exec_ctx, grpc_fake_resolver_response_generator* generator,
     grpc_channel_args* next_response) {
   GPR_ASSERT(generator->resolver != NULL);
-  set_response_cb_arg* cb_arg = gpr_zalloc(sizeof(*cb_arg));
-  cb_arg->generator = generator;
-  cb_arg->next_response = grpc_channel_args_copy(next_response);
-  GRPC_CLOSURE_SCHED(
-      exec_ctx, GRPC_CLOSURE_CREATE(set_response_cb, cb_arg,
-                                    grpc_combiner_scheduler(
-                                        generator->resolver->base.combiner)),
-      GRPC_ERROR_NONE);
+  set_response_closure_arg* closure_arg = gpr_zalloc(sizeof(*closure_arg));
+  closure_arg->generator = generator;
+  closure_arg->next_response = grpc_channel_args_copy(next_response);
+  GRPC_CLOSURE_SCHED(exec_ctx,
+                     GRPC_CLOSURE_INIT(&closure_arg->set_response_closure,
+                                       set_response_closure_fn, closure_arg,
+                                       grpc_combiner_scheduler(
+                                           generator->resolver->base.combiner)),
+                     GRPC_ERROR_NONE);
 }
 
 static void* response_generator_arg_copy(void* p) {