Progress to converting chttp2 to combiner locks

1 files changed, 17 insertions, 0 deletions

diff --git a/src/core/lib/transport/transport.h b/src/core/lib/transport/transport.h
index 08c0a237c9..b04b60ec3d 100644
--- a/src/core/lib/transport/transport.h
+++ b/src/core/lib/transport/transport.h
@@ -96,6 +96,11 @@ void grpc_transport_move_one_way_stats(grpc_transport_one_way_stats *from,
 void grpc_transport_move_stats(grpc_transport_stream_stats *from,
                                grpc_transport_stream_stats *to);
 
+typedef struct {
+  grpc_closure closure;
+  void *args[2];
+} grpc_transport_private_op_data;
+
 /* Transport stream op: a set of operations to perform on a transport
    against a single stream */
 typedef struct grpc_transport_stream_op {
@@ -144,6 +149,12 @@ typedef struct grpc_transport_stream_op {
 
   /* Indexes correspond to grpc_context_index enum values */
   grpc_call_context_element *context;
+
+  /***************************************************************************
+   * remaining fields are initialized and used at the discretion of the
+   * transport implementation */
+
+  grpc_transport_private_op_data transport_private;
 } grpc_transport_stream_op;
 
 /** Transport op: a set of operations to perform on a transport as a whole */
@@ -177,6 +188,12 @@ typedef struct grpc_transport_op {
   grpc_pollset_set *bind_pollset_set;
   /** send a ping, call this back if not NULL */
   grpc_closure *send_ping;
+
+  /***************************************************************************
+   * remaining fields are initialized and used at the discretion of the
+   * transport implementation */
+
+  grpc_transport_private_op_data transport_private;
 } grpc_transport_op;
 
 /* Returns the amount of memory required to store a grpc_stream for this