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-rw-r--r--src/core/lib/channel/channel_stack.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index 1e943dc2e5..6d3340bcbf 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -128,7 +128,8 @@ typedef struct {
server_transport_data is an opaque pointer. If it is NULL, this call is
on a client; if it is non-NULL, then it points to memory owned by the
transport and is on the server. Most filters want to ignore this
- argument. */
+ argument.
+ Implementations may assume that elem->call_data is all zeros. */
grpc_error *(*init_call_elem)(grpc_exec_ctx *exec_ctx,
grpc_call_element *elem,
const grpc_call_element_args *args);
@@ -152,7 +153,8 @@ typedef struct {
is what needs initializing.
is_first, is_last designate this elements position in the stack, and are
useful for asserting correct configuration by upper layer code.
- The filter does not need to do any chaining */
+ The filter does not need to do any chaining.
+ Implementations may assume that elem->call_data is all zeros. */
grpc_error *(*init_channel_elem)(grpc_exec_ctx *exec_ctx,
grpc_channel_element *elem,
grpc_channel_element_args *args);