Optimize framing a little

- rely on the fact that data-to-come holds a reference to
data-being-written, so there's no need to add a ref for every frame
written
- provide an 'inlined' version of grpc_slice_malloc (via a #define) that
gives the compiler more information about small allocations to enable
better optimization

1 files changed, 2 insertions, 2 deletions

diff --git a/src/core/ext/transport/chttp2/transport/bin_decoder.c b/src/core/ext/transport/chttp2/transport/bin_decoder.c
index 8c87de112e..21bed18c9a 100644
--- a/src/core/ext/transport/chttp2/transport/bin_decoder.c
+++ b/src/core/ext/transport/chttp2/transport/bin_decoder.c
@@ -169,7 +169,7 @@ grpc_slice grpc_chttp2_base64_decode(grpc_exec_ctx *exec_ctx,
       }
     }
   }
-  output = grpc_slice_malloc(output_length);
+  output = GRPC_SLICE_MALLOC(output_length);
 
   ctx.input_cur = GRPC_SLICE_START_PTR(input);
   ctx.input_end = GRPC_SLICE_END_PTR(input);
@@ -193,7 +193,7 @@ grpc_slice grpc_chttp2_base64_decode_with_length(grpc_exec_ctx *exec_ctx,
                                                  grpc_slice input,
                                                  size_t output_length) {
   size_t input_length = GRPC_SLICE_LENGTH(input);
-  grpc_slice output = grpc_slice_malloc(output_length);
+  grpc_slice output = GRPC_SLICE_MALLOC(output_length);
   struct grpc_base64_decode_context ctx;
 
   // The length of a base64 string cannot be 4 * n + 1