Craig Tiller | af69180 | 2015-06-23 14:57:07 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright 2015, Google Inc. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are |
| 8 | * met: |
| 9 | * |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above |
| 13 | * copyright notice, this list of conditions and the following disclaimer |
| 14 | * in the documentation and/or other materials provided with the |
| 15 | * distribution. |
| 16 | * * Neither the name of Google Inc. nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | #include "src/core/client_config/subchannel.h" |
Craig Tiller | 2595ab7 | 2015-06-25 15:26:00 -0700 | [diff] [blame] | 35 | |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame^] | 36 | #include <string.h> |
| 37 | |
Craig Tiller | 2595ab7 | 2015-06-25 15:26:00 -0700 | [diff] [blame] | 38 | #include <grpc/support/alloc.h> |
| 39 | |
| 40 | struct grpc_subchannel { |
| 41 | gpr_refcount refs; |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 42 | grpc_connector *connector; |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame^] | 43 | |
| 44 | /** non-transport related channel filters */ |
| 45 | const grpc_channel_filter **filters; |
| 46 | size_t filter_count; |
| 47 | /** channel arguments */ |
| 48 | grpc_channel_args *args; |
| 49 | /** address to connect to */ |
| 50 | struct sockaddr *addr; |
| 51 | size_t addr_len; |
Craig Tiller | 2595ab7 | 2015-06-25 15:26:00 -0700 | [diff] [blame] | 52 | }; |
| 53 | |
| 54 | struct grpc_subchannel_call { |
| 55 | grpc_subchannel *subchannel; |
| 56 | gpr_refcount refs; |
| 57 | }; |
| 58 | |
| 59 | #define SUBCHANNEL_CALL_TO_CALL_STACK(call) (((grpc_call_stack *)(call)) + 1) |
| 60 | |
| 61 | /* |
| 62 | * grpc_subchannel implementation |
| 63 | */ |
| 64 | |
| 65 | void grpc_subchannel_ref(grpc_subchannel *channel) { gpr_ref(&channel->refs); } |
| 66 | |
| 67 | void grpc_subchannel_unref(grpc_subchannel *channel) { |
| 68 | if (gpr_unref(&channel->refs)) { |
| 69 | gpr_free(channel); |
| 70 | } |
| 71 | } |
| 72 | |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame^] | 73 | grpc_subchannel *grpc_subchannel_create(grpc_connector *connector, |
| 74 | grpc_subchannel_args *args) { |
| 75 | grpc_subchannel *c = gpr_malloc(sizeof(*c)); |
| 76 | memset(c, 0, sizeof(*c)); |
| 77 | gpr_ref_init(&c->refs, 1); |
| 78 | c->connector = connector; |
| 79 | grpc_connector_ref(c->connector); |
| 80 | c->filters = gpr_malloc(sizeof(grpc_channel_filter *) * args->filter_count); |
| 81 | memcpy(c->filters, args->filters, |
| 82 | sizeof(grpc_channel_filter *) * args->filter_count); |
| 83 | c->filter_count = args->filter_count; |
| 84 | c->addr = gpr_malloc(args->addr_len); |
| 85 | memcpy(c->addr, args->addr, args->addr_len); |
| 86 | c->addr_len = args->addr_len; |
| 87 | return c; |
| 88 | } |
| 89 | |
Craig Tiller | 2595ab7 | 2015-06-25 15:26:00 -0700 | [diff] [blame] | 90 | /* |
| 91 | * grpc_subchannel_call implementation |
| 92 | */ |
| 93 | |
| 94 | void grpc_subchannel_call_ref(grpc_subchannel_call *call) { |
| 95 | gpr_ref(&call->refs); |
| 96 | } |
| 97 | |
| 98 | void grpc_subchannel_call_unref(grpc_subchannel_call *call) { |
| 99 | if (gpr_unref(&call->refs)) { |
| 100 | grpc_call_stack_destroy(SUBCHANNEL_CALL_TO_CALL_STACK(call)); |
| 101 | grpc_subchannel_unref(call->subchannel); |
| 102 | gpr_free(call); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | void grpc_subchannel_call_process_op(grpc_subchannel_call *call, |
| 107 | grpc_transport_stream_op *op) { |
| 108 | grpc_call_stack *call_stack = SUBCHANNEL_CALL_TO_CALL_STACK(call); |
| 109 | grpc_call_element *top_elem = grpc_call_stack_element(call_stack, 0); |
| 110 | top_elem->filter->start_transport_stream_op(top_elem, op); |
| 111 | } |