Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 3 | * Copyright 2015 gRPC authors. |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 4 | * |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 8 | * |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 10 | * |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 16 | * |
| 17 | */ |
| 18 | |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 19 | #include "src/core/lib/surface/channel.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 20 | |
Yash Tibrewal | fcd26bc | 2017-09-25 15:08:28 -0700 | [diff] [blame] | 21 | #include <inttypes.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | |
David Garcia Quintas | 73dcbda | 2016-04-23 00:17:05 -0700 | [diff] [blame] | 25 | #include <grpc/compression.h> |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame] | 26 | #include <grpc/support/alloc.h> |
| 27 | #include <grpc/support/log.h> |
| 28 | #include <grpc/support/string_util.h> |
| 29 | |
David Garcia Quintas | 73dcbda | 2016-04-23 00:17:05 -0700 | [diff] [blame] | 30 | #include "src/core/lib/channel/channel_args.h" |
Craig Tiller | f1dc9c3 | 2017-09-13 14:21:27 -0700 | [diff] [blame] | 31 | #include "src/core/lib/debug/stats.h" |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 32 | #include "src/core/lib/iomgr/iomgr.h" |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 33 | #include "src/core/lib/slice/slice_internal.h" |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 34 | #include "src/core/lib/support/string.h" |
| 35 | #include "src/core/lib/surface/api_trace.h" |
| 36 | #include "src/core/lib/surface/call.h" |
| 37 | #include "src/core/lib/surface/channel_init.h" |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 38 | #include "src/core/lib/transport/static_metadata.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 39 | |
Craig Tiller | 5d5bd22 | 2015-06-08 17:01:49 -0700 | [diff] [blame] | 40 | /** Cache grpc-status: X mdelems for X = 0..NUM_CACHED_STATUS_ELEMS. |
| 41 | * Avoids needing to take a metadata context lock for sending status |
| 42 | * if the status code is <= NUM_CACHED_STATUS_ELEMS. |
| 43 | * Sized to allow the most commonly used codes to fit in |
| 44 | * (OK, Cancelled, Unknown). */ |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 45 | #define NUM_CACHED_STATUS_ELEMS 3 |
| 46 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 47 | typedef struct registered_call { |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 48 | grpc_mdelem path; |
| 49 | grpc_mdelem authority; |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 50 | struct registered_call* next; |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 51 | } registered_call; |
| 52 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 53 | struct grpc_channel { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 54 | int is_client; |
David Garcia Quintas | 73dcbda | 2016-04-23 00:17:05 -0700 | [diff] [blame] | 55 | grpc_compression_options compression_options; |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 56 | grpc_mdelem default_authority; |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 57 | |
Craig Tiller | a6bec8f | 2017-03-14 08:26:04 -0700 | [diff] [blame] | 58 | gpr_atm call_size_estimate; |
| 59 | |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 60 | gpr_mu registered_call_mu; |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 61 | registered_call* registered_calls; |
David Garcia Quintas | b0dd253 | 2016-05-17 19:14:51 -0700 | [diff] [blame] | 62 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 63 | char* target; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 64 | }; |
| 65 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 66 | #define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack*)((c) + 1)) |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 67 | #define CHANNEL_FROM_CHANNEL_STACK(channel_stack) \ |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 68 | (((grpc_channel*)(channel_stack)) - 1) |
Craig Tiller | da66937 | 2015-02-05 10:10:15 -0800 | [diff] [blame] | 69 | #define CHANNEL_FROM_TOP_ELEM(top_elem) \ |
| 70 | CHANNEL_FROM_CHANNEL_STACK(grpc_channel_stack_from_top_element(top_elem)) |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 71 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 72 | static void destroy_channel(grpc_exec_ctx* exec_ctx, void* arg, |
| 73 | grpc_error* error); |
Craig Tiller | 7b43561 | 2015-11-24 08:15:05 -0800 | [diff] [blame] | 74 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 75 | grpc_channel* grpc_channel_create_with_builder( |
| 76 | grpc_exec_ctx* exec_ctx, grpc_channel_stack_builder* builder, |
Craig Tiller | b7f35a6 | 2017-03-16 13:29:05 -0700 | [diff] [blame] | 77 | grpc_channel_stack_type channel_stack_type) { |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 78 | char* target = gpr_strdup(grpc_channel_stack_builder_get_target(builder)); |
| 79 | grpc_channel_args* args = grpc_channel_args_copy( |
Mark D. Roth | 5e2566e | 2016-11-18 10:53:13 -0800 | [diff] [blame] | 80 | grpc_channel_stack_builder_get_channel_arguments(builder)); |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 81 | grpc_channel* channel; |
Craig Tiller | f1dc9c3 | 2017-09-13 14:21:27 -0700 | [diff] [blame] | 82 | if (channel_stack_type == GRPC_SERVER_CHANNEL) { |
| 83 | GRPC_STATS_INC_SERVER_CHANNELS_CREATED(exec_ctx); |
| 84 | } else { |
| 85 | GRPC_STATS_INC_CLIENT_CHANNELS_CREATED(exec_ctx); |
| 86 | } |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 87 | grpc_error* error = grpc_channel_stack_builder_finish( |
Mark D. Roth | 5e2566e | 2016-11-18 10:53:13 -0800 | [diff] [blame] | 88 | exec_ctx, builder, sizeof(grpc_channel), 1, destroy_channel, NULL, |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 89 | (void**)&channel); |
Mark D. Roth | 5e2566e | 2016-11-18 10:53:13 -0800 | [diff] [blame] | 90 | if (error != GRPC_ERROR_NONE) { |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 91 | gpr_log(GPR_ERROR, "channel stack builder failed: %s", |
| 92 | grpc_error_string(error)); |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 93 | GRPC_ERROR_UNREF(error); |
Craig Tiller | b7f35a6 | 2017-03-16 13:29:05 -0700 | [diff] [blame] | 94 | gpr_free(target); |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 95 | goto done; |
Craig Tiller | 839bebe | 2016-04-06 08:07:11 -0700 | [diff] [blame] | 96 | } |
Craig Tiller | 178edfa | 2016-02-17 20:54:46 -0800 | [diff] [blame] | 97 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 98 | memset(channel, 0, sizeof(*channel)); |
Craig Tiller | b7f35a6 | 2017-03-16 13:29:05 -0700 | [diff] [blame] | 99 | channel->target = target; |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 100 | channel->is_client = grpc_channel_stack_type_is_client(channel_stack_type); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 101 | gpr_mu_init(&channel->registered_call_mu); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 102 | channel->registered_calls = NULL; |
Craig Tiller | 629b0ed | 2015-04-22 11:14:26 -0700 | [diff] [blame] | 103 | |
Craig Tiller | a6bec8f | 2017-03-14 08:26:04 -0700 | [diff] [blame] | 104 | gpr_atm_no_barrier_store( |
| 105 | &channel->call_size_estimate, |
Craig Tiller | 2ccd502 | 2017-03-16 09:57:46 -0700 | [diff] [blame] | 106 | (gpr_atm)CHANNEL_STACK_FROM_CHANNEL(channel)->call_stack_size); |
Craig Tiller | a6bec8f | 2017-03-14 08:26:04 -0700 | [diff] [blame] | 107 | |
David Garcia Quintas | 73dcbda | 2016-04-23 00:17:05 -0700 | [diff] [blame] | 108 | grpc_compression_options_init(&channel->compression_options); |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 109 | for (size_t i = 0; i < args->num_args; i++) { |
| 110 | if (0 == strcmp(args->args[i].key, GRPC_ARG_DEFAULT_AUTHORITY)) { |
| 111 | if (args->args[i].type != GRPC_ARG_STRING) { |
| 112 | gpr_log(GPR_ERROR, "%s ignored: it must be a string", |
| 113 | GRPC_ARG_DEFAULT_AUTHORITY); |
| 114 | } else { |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 115 | if (!GRPC_MDISNULL(channel->default_authority)) { |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 116 | /* setting this takes precedence over anything else */ |
Craig Tiller | 4cc1c35 | 2016-12-27 08:48:01 -0800 | [diff] [blame] | 117 | GRPC_MDELEM_UNREF(exec_ctx, channel->default_authority); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 118 | } |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 119 | channel->default_authority = grpc_mdelem_from_slices( |
| 120 | exec_ctx, GRPC_MDSTR_AUTHORITY, |
Craig Tiller | 5f4264f | 2017-02-08 14:53:04 -0800 | [diff] [blame] | 121 | grpc_slice_intern( |
| 122 | grpc_slice_from_static_string(args->args[i].value.string))); |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 123 | } |
| 124 | } else if (0 == |
| 125 | strcmp(args->args[i].key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)) { |
| 126 | if (args->args[i].type != GRPC_ARG_STRING) { |
| 127 | gpr_log(GPR_ERROR, "%s ignored: it must be a string", |
| 128 | GRPC_SSL_TARGET_NAME_OVERRIDE_ARG); |
| 129 | } else { |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 130 | if (!GRPC_MDISNULL(channel->default_authority)) { |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 131 | /* other ways of setting this (notably ssl) take precedence */ |
| 132 | gpr_log(GPR_ERROR, |
| 133 | "%s ignored: default host already set some other way", |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 134 | GRPC_SSL_TARGET_NAME_OVERRIDE_ARG); |
| 135 | } else { |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 136 | channel->default_authority = grpc_mdelem_from_slices( |
| 137 | exec_ctx, GRPC_MDSTR_AUTHORITY, |
Craig Tiller | 5f4264f | 2017-02-08 14:53:04 -0800 | [diff] [blame] | 138 | grpc_slice_intern( |
| 139 | grpc_slice_from_static_string(args->args[i].value.string))); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 140 | } |
| 141 | } |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 142 | } else if (0 == strcmp(args->args[i].key, |
| 143 | GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) { |
| 144 | channel->compression_options.default_level.is_set = true; |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 145 | channel->compression_options.default_level.level = |
David Garcia Quintas | 228a514 | 2017-03-30 19:43:00 -0700 | [diff] [blame] | 146 | (grpc_compression_level)grpc_channel_arg_get_integer( |
| 147 | &args->args[i], |
Yash Tibrewal | 37fdb73 | 2017-09-25 16:45:02 -0700 | [diff] [blame] | 148 | {GRPC_COMPRESS_LEVEL_NONE, GRPC_COMPRESS_LEVEL_NONE, |
| 149 | GRPC_COMPRESS_LEVEL_COUNT - 1}); |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 150 | } else if (0 == strcmp(args->args[i].key, |
Muxi Yan | d37411e | 2017-08-17 18:44:12 -0700 | [diff] [blame] | 151 | GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_LEVEL)) { |
| 152 | channel->compression_options.default_stream_compression_level.is_set = |
| 153 | true; |
| 154 | channel->compression_options.default_stream_compression_level.level = |
Muxi Yan | da4f087 | 2017-08-18 17:05:27 -0700 | [diff] [blame] | 155 | (grpc_stream_compression_level)grpc_channel_arg_get_integer( |
Muxi Yan | d37411e | 2017-08-17 18:44:12 -0700 | [diff] [blame] | 156 | &args->args[i], |
Yash Tibrewal | 37fdb73 | 2017-09-25 16:45:02 -0700 | [diff] [blame] | 157 | {GRPC_STREAM_COMPRESS_LEVEL_NONE, GRPC_STREAM_COMPRESS_LEVEL_NONE, |
| 158 | GRPC_STREAM_COMPRESS_LEVEL_COUNT - 1}); |
Muxi Yan | d37411e | 2017-08-17 18:44:12 -0700 | [diff] [blame] | 159 | } else if (0 == strcmp(args->args[i].key, |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 160 | GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) { |
| 161 | channel->compression_options.default_algorithm.is_set = true; |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 162 | channel->compression_options.default_algorithm.algorithm = |
David Garcia Quintas | 228a514 | 2017-03-30 19:43:00 -0700 | [diff] [blame] | 163 | (grpc_compression_algorithm)grpc_channel_arg_get_integer( |
Yash Tibrewal | 37fdb73 | 2017-09-25 16:45:02 -0700 | [diff] [blame] | 164 | &args->args[i], {GRPC_COMPRESS_NONE, GRPC_COMPRESS_NONE, |
| 165 | GRPC_COMPRESS_ALGORITHMS_COUNT - 1}); |
Muxi Yan | 68a0fd5 | 2017-07-21 09:26:04 -0700 | [diff] [blame] | 166 | } else if (0 == strcmp(args->args[i].key, |
| 167 | GRPC_STREAM_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM)) { |
| 168 | channel->compression_options.default_stream_compression_algorithm.is_set = |
| 169 | true; |
| 170 | channel->compression_options.default_stream_compression_algorithm |
| 171 | .algorithm = |
| 172 | (grpc_stream_compression_algorithm)grpc_channel_arg_get_integer( |
| 173 | &args->args[i], |
Yash Tibrewal | 37fdb73 | 2017-09-25 16:45:02 -0700 | [diff] [blame] | 174 | {GRPC_STREAM_COMPRESS_NONE, GRPC_STREAM_COMPRESS_NONE, |
| 175 | GRPC_STREAM_COMPRESS_ALGORITHMS_COUNT - 1}); |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 176 | } else if (0 == |
| 177 | strcmp(args->args[i].key, |
| 178 | GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) { |
| 179 | channel->compression_options.enabled_algorithms_bitset = |
| 180 | (uint32_t)args->args[i].value.integer | |
| 181 | 0x1; /* always support no compression */ |
Muxi Yan | 68a0fd5 | 2017-07-21 09:26:04 -0700 | [diff] [blame] | 182 | } else if (0 == |
| 183 | strcmp( |
| 184 | args->args[i].key, |
| 185 | GRPC_STREAM_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET)) { |
| 186 | channel->compression_options |
| 187 | .enabled_stream_compression_algorithms_bitset = |
| 188 | (uint32_t)args->args[i].value.integer | |
| 189 | 0x1; /* always support no compression */ |
Craig Tiller | 629b0ed | 2015-04-22 11:14:26 -0700 | [diff] [blame] | 190 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 191 | } |
Craig Tiller | 629b0ed | 2015-04-22 11:14:26 -0700 | [diff] [blame] | 192 | |
Mark D. Roth | e62605f | 2016-11-29 16:31:36 +0000 | [diff] [blame] | 193 | done: |
Craig Tiller | 4cc1c35 | 2016-12-27 08:48:01 -0800 | [diff] [blame] | 194 | grpc_channel_args_destroy(exec_ctx, args); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 195 | return channel; |
| 196 | } |
| 197 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 198 | grpc_channel* grpc_channel_create(grpc_exec_ctx* exec_ctx, const char* target, |
| 199 | const grpc_channel_args* input_args, |
Craig Tiller | b7f35a6 | 2017-03-16 13:29:05 -0700 | [diff] [blame] | 200 | grpc_channel_stack_type channel_stack_type, |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 201 | grpc_transport* optional_transport) { |
| 202 | grpc_channel_stack_builder* builder = grpc_channel_stack_builder_create(); |
Craig Tiller | b7f35a6 | 2017-03-16 13:29:05 -0700 | [diff] [blame] | 203 | grpc_channel_stack_builder_set_channel_arguments(exec_ctx, builder, |
| 204 | input_args); |
| 205 | grpc_channel_stack_builder_set_target(builder, target); |
| 206 | grpc_channel_stack_builder_set_transport(builder, optional_transport); |
| 207 | if (!grpc_channel_init_create_stack(exec_ctx, builder, channel_stack_type)) { |
| 208 | grpc_channel_stack_builder_destroy(exec_ctx, builder); |
| 209 | return NULL; |
| 210 | } |
| 211 | return grpc_channel_create_with_builder(exec_ctx, builder, |
| 212 | channel_stack_type); |
| 213 | } |
| 214 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 215 | size_t grpc_channel_get_call_size_estimate(grpc_channel* channel) { |
Craig Tiller | a6bec8f | 2017-03-14 08:26:04 -0700 | [diff] [blame] | 216 | #define ROUND_UP_SIZE 256 |
Craig Tiller | 878a7c2 | 2017-03-23 15:14:48 -0700 | [diff] [blame] | 217 | /* We round up our current estimate to the NEXT value of ROUND_UP_SIZE. |
| 218 | This ensures: |
| 219 | 1. a consistent size allocation when our estimate is drifting slowly |
| 220 | (which is common) - which tends to help most allocators reuse memory |
| 221 | 2. a small amount of allowed growth over the estimate without hitting |
| 222 | the arena size doubling case, reducing overall memory usage */ |
Craig Tiller | b64d652 | 2017-03-23 15:17:18 -0700 | [diff] [blame] | 223 | return ((size_t)gpr_atm_no_barrier_load(&channel->call_size_estimate) + |
| 224 | 2 * ROUND_UP_SIZE) & |
| 225 | ~(size_t)(ROUND_UP_SIZE - 1); |
Craig Tiller | a6bec8f | 2017-03-14 08:26:04 -0700 | [diff] [blame] | 226 | } |
| 227 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 228 | void grpc_channel_update_call_size_estimate(grpc_channel* channel, |
Craig Tiller | a6bec8f | 2017-03-14 08:26:04 -0700 | [diff] [blame] | 229 | size_t size) { |
| 230 | size_t cur = (size_t)gpr_atm_no_barrier_load(&channel->call_size_estimate); |
| 231 | if (cur < size) { |
| 232 | /* size grew: update estimate */ |
| 233 | gpr_atm_no_barrier_cas(&channel->call_size_estimate, (gpr_atm)cur, |
| 234 | (gpr_atm)size); |
| 235 | /* if we lose: never mind, something else will likely update soon enough */ |
| 236 | } else if (cur == size) { |
| 237 | /* no change: holding pattern */ |
| 238 | } else if (cur > 0) { |
| 239 | /* size shrank: decrease estimate */ |
| 240 | gpr_atm_no_barrier_cas( |
| 241 | &channel->call_size_estimate, (gpr_atm)cur, |
| 242 | (gpr_atm)(GPR_MIN(cur - 1, (255 * cur + size) / 256))); |
| 243 | /* if we lose: never mind, something else will likely update soon enough */ |
| 244 | } |
| 245 | } |
| 246 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 247 | char* grpc_channel_get_target(grpc_channel* channel) { |
Masood Malekghassemi | 76c3d74 | 2015-08-19 18:22:53 -0700 | [diff] [blame] | 248 | GRPC_API_TRACE("grpc_channel_get_target(channel=%p)", 1, (channel)); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 249 | return gpr_strdup(channel->target); |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame] | 250 | } |
| 251 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 252 | void grpc_channel_get_info(grpc_channel* channel, |
| 253 | const grpc_channel_info* channel_info) { |
Mark D. Roth | b2d2488 | 2016-10-27 15:44:07 -0700 | [diff] [blame] | 254 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 255 | grpc_channel_element* elem = |
Mark D. Roth | b2d2488 | 2016-10-27 15:44:07 -0700 | [diff] [blame] | 256 | grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0); |
| 257 | elem->filter->get_channel_info(&exec_ctx, elem, channel_info); |
| 258 | grpc_exec_ctx_finish(&exec_ctx); |
| 259 | } |
| 260 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 261 | static grpc_call* grpc_channel_create_call_internal( |
| 262 | grpc_exec_ctx* exec_ctx, grpc_channel* channel, grpc_call* parent_call, |
| 263 | uint32_t propagation_mask, grpc_completion_queue* cq, |
| 264 | grpc_pollset_set* pollset_set_alternative, grpc_mdelem path_mdelem, |
Craig Tiller | 89c1428 | 2017-07-19 15:32:27 -0700 | [diff] [blame] | 265 | grpc_mdelem authority_mdelem, grpc_millis deadline) { |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 266 | grpc_mdelem send_metadata[2]; |
Craig Tiller | 32ca48c | 2015-09-10 11:47:15 -0700 | [diff] [blame] | 267 | size_t num_metadata = 0; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 268 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 269 | GPR_ASSERT(channel->is_client); |
David Garcia Quintas | 879b3b9 | 2016-04-25 11:23:38 -0700 | [diff] [blame] | 270 | GPR_ASSERT(!(cq != NULL && pollset_set_alternative != NULL)); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 271 | |
Craig Tiller | c4b56b6 | 2015-07-23 17:44:11 -0700 | [diff] [blame] | 272 | send_metadata[num_metadata++] = path_mdelem; |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 273 | if (!GRPC_MDISNULL(authority_mdelem)) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 274 | send_metadata[num_metadata++] = authority_mdelem; |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 275 | } else if (!GRPC_MDISNULL(channel->default_authority)) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 276 | send_metadata[num_metadata++] = GRPC_MDELEM_REF(channel->default_authority); |
| 277 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 278 | |
Craig Tiller | 8e21465 | 2016-08-19 09:54:31 -0700 | [diff] [blame] | 279 | grpc_call_create_args args; |
| 280 | memset(&args, 0, sizeof(args)); |
| 281 | args.channel = channel; |
Yash Tibrewal | b2a54ac | 2017-09-13 10:18:07 -0700 | [diff] [blame] | 282 | args.parent = parent_call; |
Craig Tiller | 8e21465 | 2016-08-19 09:54:31 -0700 | [diff] [blame] | 283 | args.propagation_mask = propagation_mask; |
| 284 | args.cq = cq; |
| 285 | args.pollset_set_alternative = pollset_set_alternative; |
| 286 | args.server_transport_data = NULL; |
| 287 | args.add_initial_metadata = send_metadata; |
| 288 | args.add_initial_metadata_count = num_metadata; |
| 289 | args.send_deadline = deadline; |
| 290 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 291 | grpc_call* call; |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 292 | GRPC_LOG_IF_ERROR("call_create", grpc_call_create(exec_ctx, &args, &call)); |
Craig Tiller | 8e21465 | 2016-08-19 09:54:31 -0700 | [diff] [blame] | 293 | return call; |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 294 | } |
klempner | c463f74 | 2014-12-19 13:03:35 -0800 | [diff] [blame] | 295 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 296 | grpc_call* grpc_channel_create_call(grpc_channel* channel, |
| 297 | grpc_call* parent_call, |
Craig Tiller | 7536af0 | 2015-12-22 13:49:30 -0800 | [diff] [blame] | 298 | uint32_t propagation_mask, |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 299 | grpc_completion_queue* cq, |
| 300 | grpc_slice method, const grpc_slice* host, |
| 301 | gpr_timespec deadline, void* reserved) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 302 | GPR_ASSERT(!reserved); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 303 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 304 | grpc_call* call = grpc_channel_create_call_internal( |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 305 | &exec_ctx, channel, parent_call, propagation_mask, cq, NULL, |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 306 | grpc_mdelem_from_slices(&exec_ctx, GRPC_MDSTR_PATH, |
| 307 | grpc_slice_ref_internal(method)), |
| 308 | host != NULL ? grpc_mdelem_from_slices(&exec_ctx, GRPC_MDSTR_AUTHORITY, |
| 309 | grpc_slice_ref_internal(*host)) |
| 310 | : GRPC_MDNULL, |
Craig Tiller | 9a8c3f3 | 2017-07-21 13:14:14 -0700 | [diff] [blame] | 311 | grpc_timespec_to_millis_round_up(deadline)); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 312 | grpc_exec_ctx_finish(&exec_ctx); |
| 313 | return call; |
David Garcia Quintas | 4afce7e | 2016-04-18 16:25:17 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 316 | grpc_call* grpc_channel_create_pollset_set_call( |
| 317 | grpc_exec_ctx* exec_ctx, grpc_channel* channel, grpc_call* parent_call, |
| 318 | uint32_t propagation_mask, grpc_pollset_set* pollset_set, grpc_slice method, |
| 319 | const grpc_slice* host, grpc_millis deadline, void* reserved) { |
David Garcia Quintas | 4afce7e | 2016-04-18 16:25:17 -0700 | [diff] [blame] | 320 | GPR_ASSERT(!reserved); |
| 321 | return grpc_channel_create_call_internal( |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 322 | exec_ctx, channel, parent_call, propagation_mask, NULL, pollset_set, |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 323 | grpc_mdelem_from_slices(exec_ctx, GRPC_MDSTR_PATH, |
| 324 | grpc_slice_ref_internal(method)), |
| 325 | host != NULL ? grpc_mdelem_from_slices(exec_ctx, GRPC_MDSTR_AUTHORITY, |
| 326 | grpc_slice_ref_internal(*host)) |
| 327 | : GRPC_MDNULL, |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 328 | deadline); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 329 | } |
| 330 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 331 | void* grpc_channel_register_call(grpc_channel* channel, const char* method, |
| 332 | const char* host, void* reserved) { |
| 333 | registered_call* rc = (registered_call*)gpr_malloc(sizeof(registered_call)); |
Masood Malekghassemi | 76c3d74 | 2015-08-19 18:22:53 -0700 | [diff] [blame] | 334 | GRPC_API_TRACE( |
| 335 | "grpc_channel_register_call(channel=%p, method=%s, host=%s, reserved=%p)", |
| 336 | 4, (channel, method, host, reserved)); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 337 | GPR_ASSERT(!reserved); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 338 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 339 | |
| 340 | rc->path = grpc_mdelem_from_slices( |
| 341 | &exec_ctx, GRPC_MDSTR_PATH, |
| 342 | grpc_slice_intern(grpc_slice_from_static_string(method))); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 343 | rc->authority = |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 344 | host ? grpc_mdelem_from_slices( |
| 345 | &exec_ctx, GRPC_MDSTR_AUTHORITY, |
| 346 | grpc_slice_intern(grpc_slice_from_static_string(host))) |
| 347 | : GRPC_MDNULL; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 348 | gpr_mu_lock(&channel->registered_call_mu); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 349 | rc->next = channel->registered_calls; |
| 350 | channel->registered_calls = rc; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 351 | gpr_mu_unlock(&channel->registered_call_mu); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 352 | grpc_exec_ctx_finish(&exec_ctx); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 353 | return rc; |
| 354 | } |
| 355 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 356 | grpc_call* grpc_channel_create_registered_call( |
| 357 | grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask, |
| 358 | grpc_completion_queue* completion_queue, void* registered_call_handle, |
| 359 | gpr_timespec deadline, void* reserved) { |
| 360 | registered_call* rc = (registered_call*)registered_call_handle; |
Masood Malekghassemi | 76c3d74 | 2015-08-19 18:22:53 -0700 | [diff] [blame] | 361 | GRPC_API_TRACE( |
| 362 | "grpc_channel_create_registered_call(" |
Craig Tiller | 4de3e4f | 2015-10-05 08:55:50 -0700 | [diff] [blame] | 363 | "channel=%p, parent_call=%p, propagation_mask=%x, completion_queue=%p, " |
| 364 | "registered_call_handle=%p, " |
Ken Payson | 62a6c92 | 2016-06-24 11:53:54 -0700 | [diff] [blame] | 365 | "deadline=gpr_timespec { tv_sec: %" PRId64 |
| 366 | ", tv_nsec: %d, clock_type: %d }, " |
Craig Tiller | 4de3e4f | 2015-10-05 08:55:50 -0700 | [diff] [blame] | 367 | "reserved=%p)", |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 368 | 9, |
| 369 | (channel, parent_call, (unsigned)propagation_mask, completion_queue, |
| 370 | registered_call_handle, deadline.tv_sec, deadline.tv_nsec, |
| 371 | (int)deadline.clock_type, reserved)); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 372 | GPR_ASSERT(!reserved); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 373 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 374 | grpc_call* call = grpc_channel_create_call_internal( |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 375 | &exec_ctx, channel, parent_call, propagation_mask, completion_queue, NULL, |
Craig Tiller | 89c1428 | 2017-07-19 15:32:27 -0700 | [diff] [blame] | 376 | GRPC_MDELEM_REF(rc->path), GRPC_MDELEM_REF(rc->authority), |
Craig Tiller | 9a8c3f3 | 2017-07-21 13:14:14 -0700 | [diff] [blame] | 377 | grpc_timespec_to_millis_round_up(deadline)); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 378 | grpc_exec_ctx_finish(&exec_ctx); |
| 379 | return call; |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 380 | } |
| 381 | |
ncteisen | 9c43fc0 | 2017-06-08 16:06:23 -0700 | [diff] [blame] | 382 | #ifndef NDEBUG |
Craig Tiller | 7b43561 | 2015-11-24 08:15:05 -0800 | [diff] [blame] | 383 | #define REF_REASON reason |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 384 | #define REF_ARG , const char* reason |
Craig Tiller | 9ec2a52 | 2015-05-29 22:46:54 -0700 | [diff] [blame] | 385 | #else |
Craig Tiller | 7b43561 | 2015-11-24 08:15:05 -0800 | [diff] [blame] | 386 | #define REF_REASON "" |
| 387 | #define REF_ARG |
Craig Tiller | 9ec2a52 | 2015-05-29 22:46:54 -0700 | [diff] [blame] | 388 | #endif |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 389 | void grpc_channel_internal_ref(grpc_channel* c REF_ARG) { |
Craig Tiller | 7b43561 | 2015-11-24 08:15:05 -0800 | [diff] [blame] | 390 | GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CHANNEL(c), REF_REASON); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 391 | } |
| 392 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 393 | void grpc_channel_internal_unref(grpc_exec_ctx* exec_ctx, |
| 394 | grpc_channel* c REF_ARG) { |
Craig Tiller | 7b43561 | 2015-11-24 08:15:05 -0800 | [diff] [blame] | 395 | GRPC_CHANNEL_STACK_UNREF(exec_ctx, CHANNEL_STACK_FROM_CHANNEL(c), REF_REASON); |
| 396 | } |
| 397 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 398 | static void destroy_channel(grpc_exec_ctx* exec_ctx, void* arg, |
| 399 | grpc_error* error) { |
| 400 | grpc_channel* channel = (grpc_channel*)arg; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 401 | grpc_channel_stack_destroy(exec_ctx, CHANNEL_STACK_FROM_CHANNEL(channel)); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 402 | while (channel->registered_calls) { |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 403 | registered_call* rc = channel->registered_calls; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 404 | channel->registered_calls = rc->next; |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 405 | GRPC_MDELEM_UNREF(exec_ctx, rc->path); |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 406 | GRPC_MDELEM_UNREF(exec_ctx, rc->authority); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 407 | gpr_free(rc); |
| 408 | } |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 409 | GRPC_MDELEM_UNREF(exec_ctx, channel->default_authority); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 410 | gpr_mu_destroy(&channel->registered_call_mu); |
| 411 | gpr_free(channel->target); |
| 412 | gpr_free(channel); |
Craig Tiller | 7bd5ab1 | 2015-02-17 22:29:04 -0800 | [diff] [blame] | 413 | } |
| 414 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 415 | void grpc_channel_destroy(grpc_channel* channel) { |
| 416 | grpc_transport_op* op = grpc_make_transport_op(NULL); |
| 417 | grpc_channel_element* elem; |
Craig Tiller | f5768a6 | 2015-09-22 10:54:34 -0700 | [diff] [blame] | 418 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
Masood Malekghassemi | 76c3d74 | 2015-08-19 18:22:53 -0700 | [diff] [blame] | 419 | GRPC_API_TRACE("grpc_channel_destroy(channel=%p)", 1, (channel)); |
ncteisen | 4b36a3d | 2017-03-13 19:08:06 -0700 | [diff] [blame] | 420 | op->disconnect_with_error = |
| 421 | GRPC_ERROR_CREATE_FROM_STATIC_STRING("Channel Destroyed"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 422 | elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0); |
Craig Tiller | e0221ff | 2016-07-11 15:56:08 -0700 | [diff] [blame] | 423 | elem->filter->start_transport_op(&exec_ctx, elem, op); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 424 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 425 | GRPC_CHANNEL_INTERNAL_UNREF(&exec_ctx, channel, "channel"); |
Craig Tiller | dfff1b8 | 2015-09-21 14:39:57 -0700 | [diff] [blame] | 426 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 427 | grpc_exec_ctx_finish(&exec_ctx); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 428 | } |
| 429 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 430 | grpc_channel_stack* grpc_channel_get_channel_stack(grpc_channel* channel) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 431 | return CHANNEL_STACK_FROM_CHANNEL(channel); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 432 | } |
| 433 | |
David Garcia Quintas | ac09447 | 2016-05-18 20:25:57 -0700 | [diff] [blame] | 434 | grpc_compression_options grpc_channel_compression_options( |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 435 | const grpc_channel* channel) { |
David Garcia Quintas | 73dcbda | 2016-04-23 00:17:05 -0700 | [diff] [blame] | 436 | return channel->compression_options; |
| 437 | } |
| 438 | |
Craig Tiller | baa14a9 | 2017-11-03 09:09:36 -0700 | [diff] [blame] | 439 | grpc_mdelem grpc_channel_get_reffed_status_elem(grpc_exec_ctx* exec_ctx, |
| 440 | grpc_channel* channel, int i) { |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 441 | char tmp[GPR_LTOA_MIN_BUFSIZE]; |
| 442 | switch (i) { |
| 443 | case 0: |
| 444 | return GRPC_MDELEM_GRPC_STATUS_0; |
| 445 | case 1: |
| 446 | return GRPC_MDELEM_GRPC_STATUS_1; |
| 447 | case 2: |
| 448 | return GRPC_MDELEM_GRPC_STATUS_2; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 449 | } |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 450 | gpr_ltoa(i, tmp); |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 451 | return grpc_mdelem_from_slices(exec_ctx, GRPC_MDSTR_GRPC_STATUS, |
| 452 | grpc_slice_from_copied_string(tmp)); |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 453 | } |