| /* |
| * |
| * Copyright 2016, 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_EXT_CLIENT_CONFIG_SUBCHANNEL_INDEX_H |
| #define GRPC_CORE_EXT_CLIENT_CONFIG_SUBCHANNEL_INDEX_H |
| |
| #include "src/core/ext/client_config/connector.h" |
| #include "src/core/ext/client_config/subchannel.h" |
| |
| /** \file Provides an index of active subchannels so that they can be |
| shared amongst channels */ |
| |
| typedef struct grpc_subchannel_key grpc_subchannel_key; |
| |
| /** Create a key that can be used to uniquely identify a subchannel */ |
| grpc_subchannel_key *grpc_subchannel_key_create(grpc_connector *con, |
| grpc_subchannel_args *args); |
| |
| /** Destroy a subchannel key */ |
| void grpc_subchannel_key_destroy(grpc_exec_ctx *exec_ctx, |
| grpc_subchannel_key *key); |
| |
| /** Given a subchannel key, find the subchannel registered for it. |
| Returns NULL if no such channel exists. |
| Thread-safe. */ |
| grpc_subchannel *grpc_subchannel_index_find(grpc_exec_ctx *exec_ctx, |
| grpc_subchannel_key *key); |
| |
| /** Register a subchannel against a key. |
| Takes ownership of \a constructed. |
| Returns the registered subchannel. This may be different from |
| \a constructed in the case of a registration race. */ |
| grpc_subchannel *grpc_subchannel_index_register(grpc_exec_ctx *exec_ctx, |
| grpc_subchannel_key *key, |
| grpc_subchannel *constructed); |
| |
| /** Remove \a constructed as the registered subchannel for \a key. */ |
| void grpc_subchannel_index_unregister(grpc_exec_ctx *exec_ctx, |
| grpc_subchannel_key *key, |
| grpc_subchannel *constructed); |
| |
| /** Initialize the subchannel index (global) */ |
| void grpc_subchannel_index_init(void); |
| /** Shutdown the subchannel index (global) */ |
| void grpc_subchannel_index_shutdown(void); |
| |
| #endif /* GRPC_CORE_EXT_CLIENT_CONFIG_SUBCHANNEL_INDEX_H */ |