diff options
Diffstat (limited to 'src/core/channel/channel_stack.h')
| -rw-r--r-- | src/core/channel/channel_stack.h | 91 |
1 files changed, 8 insertions, 83 deletions
diff --git a/src/core/channel/channel_stack.h b/src/core/channel/channel_stack.h index ef1da7b33b..de0e4e4518 100644 --- a/src/core/channel/channel_stack.h +++ b/src/core/channel/channel_stack.h @@ -51,82 +51,11 @@ typedef struct grpc_channel_element grpc_channel_element; typedef struct grpc_call_element grpc_call_element; -/* Call operations - things that can be sent and received. - - Threading: - SEND, RECV, and CANCEL ops can be active on a call at the same time, but - only one SEND, one RECV, and one CANCEL can be active at a time. - - If state is shared between send/receive/cancel operations, it is up to - filters to provide their own protection around that. */ -typedef enum { - /* send metadata to the channels peer */ - GRPC_SEND_METADATA, - /* send a deadline */ - GRPC_SEND_DEADLINE, - /* start a connection (corresponds to start_invoke/accept) */ - GRPC_SEND_START, - /* send a message to the channels peer */ - GRPC_SEND_MESSAGE, - /* send a pre-formatted message to the channels peer */ - GRPC_SEND_PREFORMATTED_MESSAGE, - /* send half-close to the channels peer */ - GRPC_SEND_FINISH, - /* request that more data be allowed through flow control */ - GRPC_REQUEST_DATA, - /* metadata was received from the channels peer */ - GRPC_RECV_METADATA, - /* receive a deadline */ - GRPC_RECV_DEADLINE, - /* the end of the first batch of metadata was received */ - GRPC_RECV_END_OF_INITIAL_METADATA, - /* a message was received from the channels peer */ - GRPC_RECV_MESSAGE, - /* half-close was received from the channels peer */ - GRPC_RECV_HALF_CLOSE, - /* full close was received from the channels peer */ - GRPC_RECV_FINISH, - /* the call has been abnormally terminated */ - GRPC_CANCEL_OP -} grpc_call_op_type; - /* The direction of the call. The values of the enums (1, -1) matter here - they are used to increment or decrement a pointer to find the next element to call */ typedef enum { GRPC_CALL_DOWN = 1, GRPC_CALL_UP = -1 } grpc_call_dir; -/* A single filterable operation to be performed on a call */ -typedef struct { - /* The type of operation we're performing */ - grpc_call_op_type type; - /* The directionality of this call - does the operation begin at the bottom - of the stack and flow up, or does the operation start at the top of the - stack and flow down through the filters. */ - grpc_call_dir dir; - - /* Flags associated with this call: see GRPC_WRITE_* in grpc.h */ - gpr_uint32 flags; - - /* Argument data, matching up with grpc_call_op_type names */ - union { - struct { - grpc_pollset *pollset; - } start; - grpc_byte_buffer *message; - grpc_mdelem *metadata; - gpr_timespec deadline; - } data; - - /* Must be called when processing of this call-op is complete. - Signature chosen to match transport flow control callbacks */ - void (*done_cb)(void *user_data, grpc_op_error error); - /* User data to be passed into done_cb */ - void *user_data; -} grpc_call_op; - -/* returns a string representation of op, that can be destroyed with gpr_free */ -char *grpc_call_op_string(grpc_call_op *op); - typedef enum { /* send a goaway message to remote channels indicating that we are going to disconnect in the future */ @@ -174,8 +103,7 @@ typedef struct { typedef struct { /* Called to eg. send/receive data on a call. See grpc_call_next_op on how to call the next element in the stack */ - void (*call_op)(grpc_call_element *elem, grpc_call_element *from_elem, - grpc_call_op *op); + void (*start_transport_op)(grpc_call_element *elem, grpc_transport_op *op); /* Called to handle channel level operations - e.g. new calls, or transport closure. See grpc_channel_next_op on how to call the next element in the stack */ @@ -193,7 +121,8 @@ typedef struct { transport and is on the server. Most filters want to ignore this argument.*/ void (*init_call_elem)(grpc_call_element *elem, - const void *server_transport_data); + const void *server_transport_data, + grpc_transport_op *initial_op); /* Destroy per call data. The filter does not need to do any chaining */ void (*destroy_call_elem)(grpc_call_element *elem); @@ -272,12 +201,13 @@ void grpc_channel_stack_destroy(grpc_channel_stack *stack); server. */ void grpc_call_stack_init(grpc_channel_stack *channel_stack, const void *transport_server_data, + grpc_transport_op *initial_op, grpc_call_stack *call_stack); /* Destroy a call stack */ void grpc_call_stack_destroy(grpc_call_stack *stack); -/* Call the next operation (depending on call directionality) in a call stack */ -void grpc_call_next_op(grpc_call_element *elem, grpc_call_op *op); +/* Call the next operation in a call stack */ +void grpc_call_next_op(grpc_call_element *elem, grpc_transport_op *op); /* Call the next operation (depending on call directionality) in a channel stack */ void grpc_channel_next_op(grpc_channel_element *elem, grpc_channel_op *op); @@ -289,18 +219,13 @@ grpc_channel_stack *grpc_channel_stack_from_top_element( grpc_call_stack *grpc_call_stack_from_top_element(grpc_call_element *elem); void grpc_call_log_op(char *file, int line, gpr_log_severity severity, - grpc_call_element *elem, grpc_call_op *op); + grpc_call_element *elem, grpc_transport_op *op); -void grpc_call_element_send_metadata(grpc_call_element *cur_elem, - grpc_mdelem *elem); -void grpc_call_element_recv_metadata(grpc_call_element *cur_elem, - grpc_mdelem *elem); void grpc_call_element_send_cancel(grpc_call_element *cur_elem); -void grpc_call_element_send_finish(grpc_call_element *cur_elem); extern int grpc_trace_channel; #define GRPC_CALL_LOG_OP(sev, elem, op) \ if (grpc_trace_channel) grpc_call_log_op(sev, elem, op) -#endif /* GRPC_INTERNAL_CORE_CHANNEL_CHANNEL_STACK_H */ +#endif /* GRPC_INTERNAL_CORE_CHANNEL_CHANNEL_STACK_H */ |