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#ifndef GRPC_INTERNAL_CORE_SURFACE_COMPLETION_QUEUE_H
#define GRPC_INTERNAL_CORE_SURFACE_COMPLETION_QUEUE_H

/* Internal API for completion channels */

#include "src/core/iomgr/pollset.h"
#include <grpc/grpc.h>

/* A finish func is executed whenever the event consumer calls
   grpc_event_finish */
typedef void (*grpc_event_finish_func)(void *user_data, grpc_op_error error);

void grpc_cq_internal_ref(grpc_completion_queue *cc);
void grpc_cq_internal_unref(grpc_completion_queue *cc);

/* Flag that an operation is beginning: the completion channel will not finish
   shutdown until a corrensponding grpc_cq_end_* call is made */
void grpc_cq_begin_op(grpc_completion_queue *cc, grpc_call *call,
                      grpc_completion_type type);

/* grpc_cq_end_* functions pair with a grpc_cq_begin_op

   grpc_cq_end_* common arguments:
   cc        - the completion channel to queue on
   tag       - the user supplied operation tag
   on_finish - grpc_event_finish_func that is called during grpc_event_finish
               can be NULL to not get a callback
   user_data - user_data parameter to be passed to on_finish

   Other parameters match the data member of grpc_event */

/* Queue a GRPC_OP_COMPLETED operation */
void grpc_cq_end_op(grpc_completion_queue *cc, void *tag, grpc_call *call,
                    grpc_event_finish_func on_finish, void *user_data,
                    grpc_op_error error);

void grpc_cq_end_server_shutdown(grpc_completion_queue *cc, void *tag);

/* disable polling for some tests */
void grpc_completion_queue_dont_poll_test_only(grpc_completion_queue *cc);

void grpc_cq_dump_pending_ops(grpc_completion_queue *cc);

grpc_pollset *grpc_cq_pollset(grpc_completion_queue *cc);

void grpc_cq_hack_spin_pollset(grpc_completion_queue *cc);

#endif /* GRPC_INTERNAL_CORE_SURFACE_COMPLETION_QUEUE_H */