diff options
Diffstat (limited to 'src/core/lib/channel/channel_stack.h')
| -rw-r--r-- | src/core/lib/channel/channel_stack.h | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h index d72c015b67..ee68701456 100644 --- a/src/core/lib/channel/channel_stack.h +++ b/src/core/lib/channel/channel_stack.h @@ -75,9 +75,14 @@ typedef struct { typedef struct { grpc_transport_stream_stats transport_stream_stats; gpr_timespec latency; /* From call creating to enqueing of received status */ - grpc_status_code final_status; } grpc_call_stats; +/** Information about the call upon completion. */ +typedef struct { + grpc_call_stats stats; + grpc_status_code final_status; +} grpc_call_final_info; + /* Channel filters specify: 1. the amount of memory needed in the channel & call (via the sizeof_XXX members) @@ -110,8 +115,9 @@ typedef struct { 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. */ - void (*init_call_elem)(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, - grpc_call_element_args *args); + grpc_error *(*init_call_elem)(grpc_exec_ctx *exec_ctx, + grpc_call_element *elem, + grpc_call_element_args *args); void (*set_pollset_or_pollset_set)(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, grpc_polling_entity *pollent); @@ -119,16 +125,17 @@ typedef struct { The filter does not need to do any chaining. The bottom filter of a stack will be passed a non-NULL pointer to \a and_free_memory that should be passed to gpr_free when destruction - is complete. */ + is complete. \a final_info contains data about the completed call, mainly + for reporting purposes. */ void (*destroy_call_elem)(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, - const grpc_call_stats *stats, + const grpc_call_final_info *final_info, void *and_free_memory); /* sizeof(per channel data) */ size_t sizeof_channel_data; /* Initialize per-channel data. - elem is initialized at the start of the call, and elem->channel_data is - what needs initializing. + elem is initialized at the creating of the channel, and elem->channel_data + 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 */ @@ -209,12 +216,13 @@ void grpc_channel_stack_destroy(grpc_exec_ctx *exec_ctx, /* Initialize a call stack given a channel stack. transport_server_data is expected to be NULL on a client, or an opaque transport owned pointer on the server. */ -void grpc_call_stack_init(grpc_exec_ctx *exec_ctx, - grpc_channel_stack *channel_stack, int initial_refs, - grpc_iomgr_cb_func destroy, void *destroy_arg, - grpc_call_context_element *context, - const void *transport_server_data, - grpc_call_stack *call_stack); +grpc_error *grpc_call_stack_init(grpc_exec_ctx *exec_ctx, + grpc_channel_stack *channel_stack, + int initial_refs, grpc_iomgr_cb_func destroy, + void *destroy_arg, + grpc_call_context_element *context, + const void *transport_server_data, + grpc_call_stack *call_stack); /* Set a pollset or a pollset_set for a call stack: must occur before the first * op is started */ void grpc_call_stack_set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx, @@ -243,7 +251,7 @@ void grpc_call_stack_set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx, /* Destroy a call stack */ void grpc_call_stack_destroy(grpc_exec_ctx *exec_ctx, grpc_call_stack *stack, - const grpc_call_stats *call_stats, + const grpc_call_final_info *final_info, void *and_free_memory); /* Ignore set pollset{_set} - used by filters if they don't care about pollsets |