subchannel.h

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#ifndef GRPC_INTERNAL_CORE_CLIENT_CONFIG_SUBCHANNEL_H
#define GRPC_INTERNAL_CORE_CLIENT_CONFIG_SUBCHANNEL_H

#include "src/core/channel/channel_stack.h"
#include "src/core/client_config/connector.h"

typedef struct grpc_subchannel grpc_subchannel;
typedef struct grpc_subchannel_call grpc_subchannel_call;
typedef struct grpc_subchannel_args grpc_subchannel_args;

#ifdef GRPC_SUBCHANNEL_REFCOUNT_DEBUG
#define GRPC_SUBCHANNEL_REF(p, r) \
  grpc_subchannel_ref((p), __FILE__, __LINE__, (r))
#define GRPC_SUBCHANNEL_UNREF(p, r) \
  grpc_subchannel_unref((p), __FILE__, __LINE__, (r))
#define GRPC_SUBCHANNEL_CALL_REF(p, r) \
  grpc_subchannel_call_ref((p), __FILE__, __LINE__, (r))
#define GRPC_SUBCHANNEL_CALL_UNREF(p, r) \
  grpc_subchannel_call_unref((p), __FILE__, __LINE__, (r))
#define GRPC_SUBCHANNEL_REF_EXTRA_ARGS \
  , const char *file, int line, const char *reason
#else
#define GRPC_SUBCHANNEL_REF(p, r) grpc_subchannel_ref((p))
#define GRPC_SUBCHANNEL_UNREF(p, r) grpc_subchannel_unref((p))
#define GRPC_SUBCHANNEL_CALL_REF(p, r) grpc_subchannel_call_ref((p))
#define GRPC_SUBCHANNEL_CALL_UNREF(p, r) grpc_subchannel_call_unref((p))
#define GRPC_SUBCHANNEL_REF_EXTRA_ARGS
#endif

void grpc_subchannel_ref(
    grpc_subchannel *channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
void grpc_subchannel_unref(
    grpc_subchannel *channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
void grpc_subchannel_call_ref(
    grpc_subchannel_call *call GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
void grpc_subchannel_call_unref(
    grpc_subchannel_call *call GRPC_SUBCHANNEL_REF_EXTRA_ARGS);

void grpc_subchannel_create_call(grpc_subchannel *subchannel,
                                 grpc_pollset *pollset,
                                 grpc_subchannel_call **target,
                                 grpc_iomgr_closure *notify);

void grpc_subchannel_process_transport_op(grpc_subchannel *subchannel,
                                          grpc_transport_op *op);

grpc_connectivity_state grpc_subchannel_check_connectivity(
    grpc_subchannel *channel);

void grpc_subchannel_notify_on_state_change(grpc_subchannel *channel,
                                            grpc_connectivity_state *state,
                                            grpc_iomgr_closure *notify);

void grpc_subchannel_add_interested_party(grpc_subchannel *channel,
                                          grpc_pollset *pollset);
void grpc_subchannel_del_interested_party(grpc_subchannel *channel,
                                          grpc_pollset *pollset);

void grpc_subchannel_call_process_op(grpc_subchannel_call *subchannel_call,
                                     grpc_transport_stream_op *op);

char *grpc_subchannel_call_get_peer(grpc_subchannel_call *subchannel_call);

struct grpc_subchannel_args {
  const grpc_channel_filter **filters;
  size_t filter_count;
  const grpc_channel_args *args;
  struct sockaddr *addr;
  size_t addr_len;
  grpc_mdctx *mdctx;
  grpc_channel *master;
};

grpc_subchannel *grpc_subchannel_create(grpc_connector *connector,
                                        grpc_subchannel_args *args);

#endif /* GRPC_INTERNAL_CORE_CLIENT_CONFIG_SUBCHANNEL_H */