Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
Craig Tiller | 0605995 | 2015-02-18 08:34:56 -0800 | [diff] [blame] | 3 | * Copyright 2015, Google Inc. |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 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/surface/channel.h" |
| 35 | |
| 36 | #include <stdlib.h> |
| 37 | #include <string.h> |
| 38 | |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame^] | 39 | #include <grpc/support/alloc.h> |
| 40 | #include <grpc/support/log.h> |
| 41 | #include <grpc/support/string_util.h> |
| 42 | |
Craig Tiller | 7bd5ab1 | 2015-02-17 22:29:04 -0800 | [diff] [blame] | 43 | #include "src/core/iomgr/iomgr.h" |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 44 | #include "src/core/support/string.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 45 | #include "src/core/surface/call.h" |
Craig Tiller | 60fd361 | 2015-03-05 16:24:22 -0800 | [diff] [blame] | 46 | #include "src/core/surface/init.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 47 | |
Craig Tiller | 5d5bd22 | 2015-06-08 17:01:49 -0700 | [diff] [blame] | 48 | /** Cache grpc-status: X mdelems for X = 0..NUM_CACHED_STATUS_ELEMS. |
| 49 | * Avoids needing to take a metadata context lock for sending status |
| 50 | * if the status code is <= NUM_CACHED_STATUS_ELEMS. |
| 51 | * Sized to allow the most commonly used codes to fit in |
| 52 | * (OK, Cancelled, Unknown). */ |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 53 | #define NUM_CACHED_STATUS_ELEMS 3 |
| 54 | |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 55 | typedef struct registered_call { |
| 56 | grpc_mdelem *path; |
| 57 | grpc_mdelem *authority; |
| 58 | struct registered_call *next; |
| 59 | } registered_call; |
| 60 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 61 | struct grpc_channel { |
| 62 | int is_client; |
| 63 | gpr_refcount refs; |
Craig Tiller | 629b0ed | 2015-04-22 11:14:26 -0700 | [diff] [blame] | 64 | gpr_uint32 max_message_length; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 65 | grpc_mdctx *metadata_context; |
Craig Tiller | 95cae9b | 2015-06-08 16:49:21 -0700 | [diff] [blame] | 66 | /** mdstr for the grpc-status key */ |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 67 | grpc_mdstr *grpc_status_string; |
David Garcia Quintas | d16af0e | 2015-06-22 22:39:21 -0700 | [diff] [blame] | 68 | grpc_mdstr *grpc_compression_algorithm_string; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 69 | grpc_mdstr *grpc_message_string; |
klempner | c463f74 | 2014-12-19 13:03:35 -0800 | [diff] [blame] | 70 | grpc_mdstr *path_string; |
| 71 | grpc_mdstr *authority_string; |
Craig Tiller | 95cae9b | 2015-06-08 16:49:21 -0700 | [diff] [blame] | 72 | /** mdelem for grpc-status: 0 thru grpc-status: 2 */ |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 73 | grpc_mdelem *grpc_status_elem[NUM_CACHED_STATUS_ELEMS]; |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 74 | |
| 75 | gpr_mu registered_call_mu; |
| 76 | registered_call *registered_calls; |
David Garcia Quintas | 284488b | 2015-05-28 16:27:39 -0700 | [diff] [blame] | 77 | grpc_iomgr_closure destroy_closure; |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame^] | 78 | char *target; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 79 | }; |
| 80 | |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 81 | #define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack *)((c) + 1)) |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 82 | #define CHANNEL_FROM_CHANNEL_STACK(channel_stack) \ |
| 83 | (((grpc_channel *)(channel_stack)) - 1) |
Craig Tiller | da66937 | 2015-02-05 10:10:15 -0800 | [diff] [blame] | 84 | #define CHANNEL_FROM_TOP_ELEM(top_elem) \ |
| 85 | CHANNEL_FROM_CHANNEL_STACK(grpc_channel_stack_from_top_element(top_elem)) |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 86 | |
Craig Tiller | 629b0ed | 2015-04-22 11:14:26 -0700 | [diff] [blame] | 87 | /* the protobuf library will (by default) start warning at 100megs */ |
| 88 | #define DEFAULT_MAX_MESSAGE_LENGTH (100 * 1024 * 1024) |
| 89 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 90 | grpc_channel *grpc_channel_create_from_filters( |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame^] | 91 | const char *target, const grpc_channel_filter **filters, size_t num_filters, |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 92 | const grpc_channel_args *args, grpc_mdctx *mdctx, int is_client) { |
Craig Tiller | 629b0ed | 2015-04-22 11:14:26 -0700 | [diff] [blame] | 93 | size_t i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 94 | size_t size = |
| 95 | sizeof(grpc_channel) + grpc_channel_stack_size(filters, num_filters); |
| 96 | grpc_channel *channel = gpr_malloc(size); |
Jan Tattermusch | 80e5f04 | 2015-07-12 01:28:05 -0700 | [diff] [blame] | 97 | memset(channel, 0, sizeof(*channel)); |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame^] | 98 | channel->target = gpr_strdup(target); |
Craig Tiller | 60fd361 | 2015-03-05 16:24:22 -0800 | [diff] [blame] | 99 | GPR_ASSERT(grpc_is_initialized() && "call grpc_init()"); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 100 | channel->is_client = is_client; |
Craig Tiller | ca3e9d3 | 2015-06-27 18:37:27 -0700 | [diff] [blame] | 101 | /* decremented by grpc_channel_destroy */ |
| 102 | gpr_ref_init(&channel->refs, 1); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 103 | channel->metadata_context = mdctx; |
| 104 | channel->grpc_status_string = grpc_mdstr_from_string(mdctx, "grpc-status"); |
David Garcia Quintas | d16af0e | 2015-06-22 22:39:21 -0700 | [diff] [blame] | 105 | channel->grpc_compression_algorithm_string = |
David Garcia Quintas | fc0fa33 | 2015-06-25 18:11:07 -0700 | [diff] [blame] | 106 | grpc_mdstr_from_string(mdctx, "grpc-encoding"); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 107 | channel->grpc_message_string = grpc_mdstr_from_string(mdctx, "grpc-message"); |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 108 | for (i = 0; i < NUM_CACHED_STATUS_ELEMS; i++) { |
Craig Tiller | 5d5bd22 | 2015-06-08 17:01:49 -0700 | [diff] [blame] | 109 | char buf[GPR_LTOA_MIN_BUFSIZE]; |
| 110 | gpr_ltoa(i, buf); |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 111 | channel->grpc_status_elem[i] = grpc_mdelem_from_metadata_strings( |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 112 | mdctx, GRPC_MDSTR_REF(channel->grpc_status_string), |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 113 | grpc_mdstr_from_string(mdctx, buf)); |
| 114 | } |
klempner | c463f74 | 2014-12-19 13:03:35 -0800 | [diff] [blame] | 115 | channel->path_string = grpc_mdstr_from_string(mdctx, ":path"); |
| 116 | channel->authority_string = grpc_mdstr_from_string(mdctx, ":authority"); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 117 | gpr_mu_init(&channel->registered_call_mu); |
| 118 | channel->registered_calls = NULL; |
Craig Tiller | 629b0ed | 2015-04-22 11:14:26 -0700 | [diff] [blame] | 119 | |
| 120 | channel->max_message_length = DEFAULT_MAX_MESSAGE_LENGTH; |
| 121 | if (args) { |
| 122 | for (i = 0; i < args->num_args; i++) { |
| 123 | if (0 == strcmp(args->args[i].key, GRPC_ARG_MAX_MESSAGE_LENGTH)) { |
| 124 | if (args->args[i].type != GRPC_ARG_INTEGER) { |
| 125 | gpr_log(GPR_ERROR, "%s ignored: it must be an integer", |
| 126 | GRPC_ARG_MAX_MESSAGE_LENGTH); |
| 127 | } else if (args->args[i].value.integer < 0) { |
| 128 | gpr_log(GPR_ERROR, "%s ignored: it must be >= 0", |
| 129 | GRPC_ARG_MAX_MESSAGE_LENGTH); |
| 130 | } else { |
| 131 | channel->max_message_length = args->args[i].value.integer; |
| 132 | } |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | |
Craig Tiller | 079a11b | 2015-06-30 10:07:15 -0700 | [diff] [blame] | 137 | grpc_channel_stack_init(filters, num_filters, channel, args, |
| 138 | channel->metadata_context, |
Craig Tiller | 9846503 | 2015-06-29 14:36:42 -0700 | [diff] [blame] | 139 | CHANNEL_STACK_FROM_CHANNEL(channel)); |
| 140 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 141 | return channel; |
| 142 | } |
| 143 | |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame^] | 144 | char *grpc_channel_get_target(grpc_channel *channel) { |
| 145 | return gpr_strdup(channel->target); |
| 146 | } |
| 147 | |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 148 | static grpc_call *grpc_channel_create_call_internal( |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 149 | grpc_channel *channel, grpc_completion_queue *cq, grpc_mdelem *path_mdelem, |
| 150 | grpc_mdelem *authority_mdelem, gpr_timespec deadline) { |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 151 | grpc_mdelem *send_metadata[2]; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 152 | |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 153 | GPR_ASSERT(channel->is_client); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 154 | |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 155 | send_metadata[0] = path_mdelem; |
| 156 | send_metadata[1] = authority_mdelem; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 157 | |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 158 | return grpc_call_create(channel, cq, NULL, send_metadata, |
| 159 | GPR_ARRAY_SIZE(send_metadata), deadline); |
| 160 | } |
klempner | c463f74 | 2014-12-19 13:03:35 -0800 | [diff] [blame] | 161 | |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 162 | grpc_call *grpc_channel_create_call(grpc_channel *channel, |
| 163 | grpc_completion_queue *cq, |
| 164 | const char *method, const char *host, |
| 165 | gpr_timespec deadline) { |
| 166 | return grpc_channel_create_call_internal( |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 167 | channel, cq, |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 168 | grpc_mdelem_from_metadata_strings( |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 169 | channel->metadata_context, GRPC_MDSTR_REF(channel->path_string), |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 170 | grpc_mdstr_from_string(channel->metadata_context, method)), |
| 171 | grpc_mdelem_from_metadata_strings( |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 172 | channel->metadata_context, GRPC_MDSTR_REF(channel->authority_string), |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 173 | grpc_mdstr_from_string(channel->metadata_context, host)), |
| 174 | deadline); |
| 175 | } |
| 176 | |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 177 | void *grpc_channel_register_call(grpc_channel *channel, const char *method, |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 178 | const char *host) { |
| 179 | registered_call *rc = gpr_malloc(sizeof(registered_call)); |
| 180 | rc->path = grpc_mdelem_from_metadata_strings( |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 181 | channel->metadata_context, GRPC_MDSTR_REF(channel->path_string), |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 182 | grpc_mdstr_from_string(channel->metadata_context, method)); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 183 | rc->authority = grpc_mdelem_from_metadata_strings( |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 184 | channel->metadata_context, GRPC_MDSTR_REF(channel->authority_string), |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 185 | grpc_mdstr_from_string(channel->metadata_context, host)); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 186 | gpr_mu_lock(&channel->registered_call_mu); |
| 187 | rc->next = channel->registered_calls; |
| 188 | channel->registered_calls = rc; |
| 189 | gpr_mu_unlock(&channel->registered_call_mu); |
| 190 | return rc; |
| 191 | } |
| 192 | |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 193 | grpc_call *grpc_channel_create_registered_call( |
| 194 | grpc_channel *channel, grpc_completion_queue *completion_queue, |
| 195 | void *registered_call_handle, gpr_timespec deadline) { |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 196 | registered_call *rc = registered_call_handle; |
Craig Tiller | b20111c | 2015-04-10 23:27:11 +0000 | [diff] [blame] | 197 | return grpc_channel_create_call_internal( |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 198 | channel, completion_queue, GRPC_MDELEM_REF(rc->path), |
| 199 | GRPC_MDELEM_REF(rc->authority), deadline); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 200 | } |
| 201 | |
Craig Tiller | 9ec2a52 | 2015-05-29 22:46:54 -0700 | [diff] [blame] | 202 | #ifdef GRPC_CHANNEL_REF_COUNT_DEBUG |
| 203 | void grpc_channel_internal_ref(grpc_channel *c, const char *reason) { |
| 204 | gpr_log(GPR_DEBUG, "CHANNEL: ref %p %d -> %d [%s]", c, c->refs.count, |
| 205 | c->refs.count + 1, reason); |
| 206 | #else |
| 207 | void grpc_channel_internal_ref(grpc_channel *c) { |
| 208 | #endif |
| 209 | gpr_ref(&c->refs); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 210 | } |
| 211 | |
Craig Tiller | 7bd5ab1 | 2015-02-17 22:29:04 -0800 | [diff] [blame] | 212 | static void destroy_channel(void *p, int ok) { |
| 213 | grpc_channel *channel = p; |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 214 | size_t i; |
Craig Tiller | 7bd5ab1 | 2015-02-17 22:29:04 -0800 | [diff] [blame] | 215 | grpc_channel_stack_destroy(CHANNEL_STACK_FROM_CHANNEL(channel)); |
Craig Tiller | 95cae9b | 2015-06-08 16:49:21 -0700 | [diff] [blame] | 216 | for (i = 0; i < NUM_CACHED_STATUS_ELEMS; i++) { |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 217 | GRPC_MDELEM_UNREF(channel->grpc_status_elem[i]); |
Craig Tiller | 95cae9b | 2015-06-08 16:49:21 -0700 | [diff] [blame] | 218 | } |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 219 | GRPC_MDSTR_UNREF(channel->grpc_status_string); |
David Garcia Quintas | 14ce90f | 2015-07-09 16:18:14 -0700 | [diff] [blame] | 220 | GRPC_MDSTR_UNREF(channel->grpc_compression_algorithm_string); |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 221 | GRPC_MDSTR_UNREF(channel->grpc_message_string); |
| 222 | GRPC_MDSTR_UNREF(channel->path_string); |
| 223 | GRPC_MDSTR_UNREF(channel->authority_string); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 224 | while (channel->registered_calls) { |
| 225 | registered_call *rc = channel->registered_calls; |
| 226 | channel->registered_calls = rc->next; |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 227 | GRPC_MDELEM_UNREF(rc->path); |
| 228 | GRPC_MDELEM_UNREF(rc->authority); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 229 | gpr_free(rc); |
| 230 | } |
Craig Tiller | 9be83ee | 2015-02-18 14:16:15 -0800 | [diff] [blame] | 231 | grpc_mdctx_unref(channel->metadata_context); |
Craig Tiller | 0845337 | 2015-04-10 16:05:38 -0700 | [diff] [blame] | 232 | gpr_mu_destroy(&channel->registered_call_mu); |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame^] | 233 | gpr_free(channel->target); |
Craig Tiller | 7bd5ab1 | 2015-02-17 22:29:04 -0800 | [diff] [blame] | 234 | gpr_free(channel); |
| 235 | } |
| 236 | |
Craig Tiller | 9ec2a52 | 2015-05-29 22:46:54 -0700 | [diff] [blame] | 237 | #ifdef GRPC_CHANNEL_REF_COUNT_DEBUG |
Craig Tiller | b475655 | 2015-06-01 20:33:37 -0700 | [diff] [blame] | 238 | void grpc_channel_internal_unref(grpc_channel *channel, const char *reason) { |
Craig Tiller | 8674cb1 | 2015-06-05 07:09:25 -0700 | [diff] [blame] | 239 | gpr_log(GPR_DEBUG, "CHANNEL: unref %p %d -> %d [%s]", channel, |
Craig Tiller | b475655 | 2015-06-01 20:33:37 -0700 | [diff] [blame] | 240 | channel->refs.count, channel->refs.count - 1, reason); |
Craig Tiller | 9ec2a52 | 2015-05-29 22:46:54 -0700 | [diff] [blame] | 241 | #else |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 242 | void grpc_channel_internal_unref(grpc_channel *channel) { |
Craig Tiller | 9ec2a52 | 2015-05-29 22:46:54 -0700 | [diff] [blame] | 243 | #endif |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 244 | if (gpr_unref(&channel->refs)) { |
David Garcia Quintas | 284488b | 2015-05-28 16:27:39 -0700 | [diff] [blame] | 245 | channel->destroy_closure.cb = destroy_channel; |
| 246 | channel->destroy_closure.cb_arg = channel; |
| 247 | grpc_iomgr_add_callback(&channel->destroy_closure); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 248 | } |
| 249 | } |
| 250 | |
| 251 | void grpc_channel_destroy(grpc_channel *channel) { |
Craig Tiller | 9846503 | 2015-06-29 14:36:42 -0700 | [diff] [blame] | 252 | grpc_transport_op op; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 253 | grpc_channel_element *elem; |
Craig Tiller | 9846503 | 2015-06-29 14:36:42 -0700 | [diff] [blame] | 254 | memset(&op, 0, sizeof(op)); |
| 255 | op.disconnect = 1; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 256 | elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0); |
Craig Tiller | 9846503 | 2015-06-29 14:36:42 -0700 | [diff] [blame] | 257 | elem->filter->start_transport_op(elem, &op); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 258 | |
Craig Tiller | 9ec2a52 | 2015-05-29 22:46:54 -0700 | [diff] [blame] | 259 | GRPC_CHANNEL_INTERNAL_UNREF(channel, "channel"); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 260 | } |
| 261 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 262 | grpc_channel_stack *grpc_channel_get_channel_stack(grpc_channel *channel) { |
| 263 | return CHANNEL_STACK_FROM_CHANNEL(channel); |
| 264 | } |
| 265 | |
| 266 | grpc_mdctx *grpc_channel_get_metadata_context(grpc_channel *channel) { |
| 267 | return channel->metadata_context; |
| 268 | } |
| 269 | |
| 270 | grpc_mdstr *grpc_channel_get_status_string(grpc_channel *channel) { |
| 271 | return channel->grpc_status_string; |
| 272 | } |
| 273 | |
David Garcia Quintas | d7d9ce2 | 2015-06-30 23:29:03 -0700 | [diff] [blame] | 274 | grpc_mdstr *grpc_channel_get_compression_algorithm_string( |
David Garcia Quintas | fc0fa33 | 2015-06-25 18:11:07 -0700 | [diff] [blame] | 275 | grpc_channel *channel) { |
David Garcia Quintas | d16af0e | 2015-06-22 22:39:21 -0700 | [diff] [blame] | 276 | return channel->grpc_compression_algorithm_string; |
David Garcia Quintas | db94b27 | 2015-06-15 18:37:01 -0700 | [diff] [blame] | 277 | } |
| 278 | |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 279 | grpc_mdelem *grpc_channel_get_reffed_status_elem(grpc_channel *channel, int i) { |
| 280 | if (i >= 0 && i < NUM_CACHED_STATUS_ELEMS) { |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 281 | return GRPC_MDELEM_REF(channel->grpc_status_elem[i]); |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 282 | } else { |
| 283 | char tmp[GPR_LTOA_MIN_BUFSIZE]; |
| 284 | gpr_ltoa(i, tmp); |
| 285 | return grpc_mdelem_from_metadata_strings( |
Craig Tiller | 1a65a23 | 2015-07-06 10:22:32 -0700 | [diff] [blame] | 286 | channel->metadata_context, GRPC_MDSTR_REF(channel->grpc_status_string), |
Craig Tiller | 3fc8e82 | 2015-06-08 16:31:28 -0700 | [diff] [blame] | 287 | grpc_mdstr_from_string(channel->metadata_context, tmp)); |
| 288 | } |
| 289 | } |
| 290 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 291 | grpc_mdstr *grpc_channel_get_message_string(grpc_channel *channel) { |
| 292 | return channel->grpc_message_string; |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 293 | } |
Craig Tiller | fbf5be2 | 2015-04-22 16:17:09 -0700 | [diff] [blame] | 294 | |
| 295 | gpr_uint32 grpc_channel_get_max_message_length(grpc_channel *channel) { |
| 296 | return channel->max_message_length; |
Craig Tiller | 09b49d7 | 2015-04-22 16:40:23 -0700 | [diff] [blame] | 297 | } |