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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H
#define GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H
#include "src/core/lib/iomgr/pollset.h"
#include "src/core/lib/iomgr/pollset_set.h"
/* A grpc_polling_entity is a pollset-or-pollset_set container. It allows
* functions that
* accept a pollset XOR a pollset_set to do so through an abstract interface.
* No ownership is taken. */
typedef struct grpc_polling_entity {
union {
grpc_pollset *pollset;
grpc_pollset_set *pollset_set;
} pollent;
enum pops_tag { POPS_NONE, POPS_POLLSET, POPS_POLLSET_SET } tag;
} grpc_polling_entity;
grpc_polling_entity grpc_polling_entity_create_from_pollset_set(
grpc_pollset_set *pollset_set);
grpc_polling_entity grpc_polling_entity_create_from_pollset(
grpc_pollset *pollset);
/** If \a pollent contains a pollset, return it. Otherwise, return NULL */
grpc_pollset *grpc_polling_entity_pollset(grpc_polling_entity *pollent);
/** If \a pollent contains a pollset_set, return it. Otherwise, return NULL */
grpc_pollset_set *grpc_polling_entity_pollset_set(grpc_polling_entity *pollent);
bool grpc_polling_entity_is_empty(const grpc_polling_entity *pollent);
/** Add the pollset or pollset_set in \a pollent to the destination pollset_set
* \a
* pss_dst */
void grpc_polling_entity_add_to_pollset_set(grpc_exec_ctx *exec_ctx,
grpc_polling_entity *pollent,
grpc_pollset_set *pss_dst);
/** Delete the pollset or pollset_set in \a pollent from the destination
* pollset_set \a
* pss_dst */
void grpc_polling_entity_del_from_pollset_set(grpc_exec_ctx *exec_ctx,
grpc_polling_entity *pollent,
grpc_pollset_set *pss_dst);
/* pollset_set specific */
#endif /* GRPC_CORE_LIB_IOMGR_POLLING_ENTITY_H */
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