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/transport/stream_op.h" |
| 35 | |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 36 | #include <string.h> |
| 37 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 38 | #include <grpc/support/alloc.h> |
| 39 | #include <grpc/support/log.h> |
| 40 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 41 | /* Exponential growth function: Given x, return a larger x. |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 42 | Currently we grow by 1.5 times upon reallocation. */ |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 43 | #define GROW(x) (3 * (x) / 2) |
| 44 | |
| 45 | void grpc_sopb_init(grpc_stream_op_buffer *sopb) { |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 46 | sopb->ops = sopb->inlined_ops; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 47 | sopb->nops = 0; |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 48 | sopb->capacity = GRPC_SOPB_INLINE_ELEMENTS; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | void grpc_sopb_destroy(grpc_stream_op_buffer *sopb) { |
| 52 | grpc_stream_ops_unref_owned_objects(sopb->ops, sopb->nops); |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 53 | if (sopb->ops != sopb->inlined_ops) gpr_free(sopb->ops); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | void grpc_sopb_reset(grpc_stream_op_buffer *sopb) { |
| 57 | grpc_stream_ops_unref_owned_objects(sopb->ops, sopb->nops); |
| 58 | sopb->nops = 0; |
| 59 | } |
| 60 | |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 61 | void grpc_sopb_swap(grpc_stream_op_buffer *a, grpc_stream_op_buffer *b) { |
| 62 | grpc_stream_op_buffer temp = *a; |
| 63 | *a = *b; |
| 64 | *b = temp; |
| 65 | |
| 66 | if (a->ops == b->inlined_ops) { |
| 67 | a->ops = a->inlined_ops; |
| 68 | } |
| 69 | if (b->ops == a->inlined_ops) { |
| 70 | b->ops = b->inlined_ops; |
| 71 | } |
| 72 | } |
| 73 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 74 | void grpc_stream_ops_unref_owned_objects(grpc_stream_op *ops, size_t nops) { |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 75 | size_t i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 76 | for (i = 0; i < nops; i++) { |
| 77 | switch (ops[i].type) { |
| 78 | case GRPC_OP_SLICE: |
| 79 | gpr_slice_unref(ops[i].data.slice); |
| 80 | break; |
| 81 | case GRPC_OP_METADATA: |
Craig Tiller | eb40a53 | 2015-04-17 16:46:20 -0700 | [diff] [blame] | 82 | grpc_metadata_batch_destroy(&ops[i].data.metadata); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 83 | break; |
| 84 | case GRPC_OP_FLOW_CTL_CB: |
| 85 | ops[i].data.flow_ctl_cb.cb(ops[i].data.flow_ctl_cb.arg, GRPC_OP_ERROR); |
| 86 | break; |
| 87 | case GRPC_NO_OP: |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 88 | case GRPC_OP_BEGIN_MESSAGE: |
| 89 | break; |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 94 | static void assert_contained_metadata_ok(grpc_stream_op *ops, size_t nops) { |
Craig Tiller | b116c4f | 2015-04-20 10:07:36 -0700 | [diff] [blame] | 95 | #ifndef NDEBUG |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 96 | size_t i; |
| 97 | for (i = 0; i < nops; i++) { |
| 98 | if (ops[i].type == GRPC_OP_METADATA) { |
| 99 | grpc_metadata_batch_assert_ok(&ops[i].data.metadata); |
| 100 | } |
| 101 | } |
Craig Tiller | ee15234 | 2015-04-21 11:51:27 -0700 | [diff] [blame] | 102 | #endif /* NDEBUG */ |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 103 | } |
| 104 | |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 105 | static void expandto(grpc_stream_op_buffer *sopb, size_t new_capacity) { |
| 106 | sopb->capacity = new_capacity; |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 107 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 108 | if (sopb->ops == sopb->inlined_ops) { |
| 109 | sopb->ops = gpr_malloc(sizeof(grpc_stream_op) * new_capacity); |
| 110 | memcpy(sopb->ops, sopb->inlined_ops, sopb->nops * sizeof(grpc_stream_op)); |
| 111 | } else { |
| 112 | sopb->ops = gpr_realloc(sopb->ops, sizeof(grpc_stream_op) * new_capacity); |
| 113 | } |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 114 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | static grpc_stream_op *add(grpc_stream_op_buffer *sopb) { |
| 118 | grpc_stream_op *out; |
| 119 | |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 120 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
| 121 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 122 | if (sopb->nops == sopb->capacity) { |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 123 | expandto(sopb, GROW(sopb->capacity)); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 124 | } |
| 125 | out = sopb->ops + sopb->nops; |
| 126 | sopb->nops++; |
| 127 | return out; |
| 128 | } |
| 129 | |
| 130 | void grpc_sopb_add_no_op(grpc_stream_op_buffer *sopb) { |
| 131 | add(sopb)->type = GRPC_NO_OP; |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 132 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | void grpc_sopb_add_begin_message(grpc_stream_op_buffer *sopb, gpr_uint32 length, |
| 136 | gpr_uint32 flags) { |
| 137 | grpc_stream_op *op = add(sopb); |
| 138 | op->type = GRPC_OP_BEGIN_MESSAGE; |
| 139 | op->data.begin_message.length = length; |
| 140 | op->data.begin_message.flags = flags; |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 141 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 142 | } |
| 143 | |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 144 | void grpc_sopb_add_metadata(grpc_stream_op_buffer *sopb, |
| 145 | grpc_metadata_batch b) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 146 | grpc_stream_op *op = add(sopb); |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 147 | grpc_metadata_batch_assert_ok(&b); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 148 | op->type = GRPC_OP_METADATA; |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 149 | op->data.metadata = b; |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 150 | grpc_metadata_batch_assert_ok(&op->data.metadata); |
| 151 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | void grpc_sopb_add_slice(grpc_stream_op_buffer *sopb, gpr_slice slice) { |
| 155 | grpc_stream_op *op = add(sopb); |
| 156 | op->type = GRPC_OP_SLICE; |
| 157 | op->data.slice = slice; |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 158 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | void grpc_sopb_add_flow_ctl_cb(grpc_stream_op_buffer *sopb, |
| 162 | void (*cb)(void *arg, grpc_op_error error), |
| 163 | void *arg) { |
| 164 | grpc_stream_op *op = add(sopb); |
| 165 | op->type = GRPC_OP_FLOW_CTL_CB; |
| 166 | op->data.flow_ctl_cb.cb = cb; |
| 167 | op->data.flow_ctl_cb.arg = arg; |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 168 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | void grpc_sopb_append(grpc_stream_op_buffer *sopb, grpc_stream_op *ops, |
| 172 | size_t nops) { |
| 173 | size_t orig_nops = sopb->nops; |
| 174 | size_t new_nops = orig_nops + nops; |
| 175 | |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 176 | assert_contained_metadata_ok(ops, nops); |
| 177 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 178 | if (new_nops > sopb->capacity) { |
Craig Tiller | e3018e6 | 2015-02-13 17:05:19 -0800 | [diff] [blame] | 179 | expandto(sopb, GPR_MAX(GROW(sopb->capacity), new_nops)); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | memcpy(sopb->ops + orig_nops, ops, sizeof(grpc_stream_op) * nops); |
| 183 | sopb->nops = new_nops; |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 184 | assert_contained_metadata_ok(sopb->ops, sopb->nops); |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 185 | } |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 186 | |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 187 | static void assert_valid_list(grpc_mdelem_list *list) { |
Craig Tiller | b116c4f | 2015-04-20 10:07:36 -0700 | [diff] [blame] | 188 | #ifndef NDEBUG |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 189 | grpc_linked_mdelem *l; |
| 190 | |
| 191 | GPR_ASSERT((list->head == NULL) == (list->tail == NULL)); |
| 192 | if (!list->head) return; |
| 193 | GPR_ASSERT(list->head->prev == NULL); |
| 194 | GPR_ASSERT(list->tail->next == NULL); |
| 195 | GPR_ASSERT((list->head == list->tail) == (list->head->next == NULL)); |
| 196 | |
| 197 | for (l = list->head; l; l = l->next) { |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 198 | GPR_ASSERT(l->md); |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 199 | GPR_ASSERT((l->prev == NULL) == (l == list->head)); |
| 200 | GPR_ASSERT((l->next == NULL) == (l == list->tail)); |
| 201 | if (l->next) GPR_ASSERT(l->next->prev == l); |
| 202 | if (l->prev) GPR_ASSERT(l->prev->next == l); |
| 203 | } |
Craig Tiller | ee15234 | 2015-04-21 11:51:27 -0700 | [diff] [blame] | 204 | #endif /* NDEBUG */ |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 205 | } |
| 206 | |
Craig Tiller | b116c4f | 2015-04-20 10:07:36 -0700 | [diff] [blame] | 207 | #ifndef NDEBUG |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 208 | void grpc_metadata_batch_assert_ok(grpc_metadata_batch *comd) { |
| 209 | assert_valid_list(&comd->list); |
| 210 | assert_valid_list(&comd->garbage); |
| 211 | } |
Craig Tiller | ee15234 | 2015-04-21 11:51:27 -0700 | [diff] [blame] | 212 | #endif /* NDEBUG */ |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 213 | |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 214 | void grpc_metadata_batch_init(grpc_metadata_batch *comd) { |
| 215 | comd->list.head = comd->list.tail = comd->garbage.head = comd->garbage.tail = |
| 216 | NULL; |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 217 | comd->deadline = gpr_inf_future; |
| 218 | } |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 219 | |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 220 | void grpc_metadata_batch_destroy(grpc_metadata_batch *comd) { |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 221 | grpc_linked_mdelem *l; |
| 222 | for (l = comd->list.head; l; l = l->next) { |
| 223 | grpc_mdelem_unref(l->md); |
| 224 | } |
| 225 | for (l = comd->garbage.head; l; l = l->next) { |
| 226 | grpc_mdelem_unref(l->md); |
| 227 | } |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | void grpc_metadata_batch_add_head(grpc_metadata_batch *comd, |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 231 | grpc_linked_mdelem *storage, |
| 232 | grpc_mdelem *elem_to_add) { |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 233 | GPR_ASSERT(elem_to_add); |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 234 | storage->md = elem_to_add; |
| 235 | grpc_metadata_batch_link_head(comd, storage); |
| 236 | } |
| 237 | |
| 238 | static void link_head(grpc_mdelem_list *list, grpc_linked_mdelem *storage) { |
| 239 | assert_valid_list(list); |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 240 | GPR_ASSERT(storage->md); |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 241 | storage->prev = NULL; |
| 242 | storage->next = list->head; |
| 243 | if (list->head != NULL) { |
| 244 | list->head->prev = storage; |
| 245 | } else { |
| 246 | list->tail = storage; |
| 247 | } |
| 248 | list->head = storage; |
| 249 | assert_valid_list(list); |
| 250 | } |
| 251 | |
| 252 | void grpc_metadata_batch_link_head(grpc_metadata_batch *comd, |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 253 | grpc_linked_mdelem *storage) { |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 254 | link_head(&comd->list, storage); |
| 255 | } |
| 256 | |
| 257 | void grpc_metadata_batch_add_tail(grpc_metadata_batch *comd, |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 258 | grpc_linked_mdelem *storage, |
| 259 | grpc_mdelem *elem_to_add) { |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 260 | GPR_ASSERT(elem_to_add); |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 261 | storage->md = elem_to_add; |
| 262 | grpc_metadata_batch_link_tail(comd, storage); |
| 263 | } |
| 264 | |
| 265 | static void link_tail(grpc_mdelem_list *list, grpc_linked_mdelem *storage) { |
| 266 | assert_valid_list(list); |
Craig Tiller | 9c1043e | 2015-04-16 16:20:38 -0700 | [diff] [blame] | 267 | GPR_ASSERT(storage->md); |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 268 | storage->prev = list->tail; |
| 269 | storage->next = NULL; |
| 270 | if (list->tail != NULL) { |
| 271 | list->tail->next = storage; |
| 272 | } else { |
| 273 | list->head = storage; |
| 274 | } |
| 275 | list->tail = storage; |
| 276 | assert_valid_list(list); |
| 277 | } |
| 278 | |
| 279 | void grpc_metadata_batch_link_tail(grpc_metadata_batch *comd, |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 280 | grpc_linked_mdelem *storage) { |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 281 | link_tail(&comd->list, storage); |
| 282 | } |
| 283 | |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 284 | void grpc_metadata_batch_merge(grpc_metadata_batch *target, |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 285 | grpc_metadata_batch *add) { |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 286 | grpc_linked_mdelem *l; |
| 287 | grpc_linked_mdelem *next; |
| 288 | for (l = add->list.head; l; l = next) { |
| 289 | next = l->next; |
| 290 | link_tail(&target->list, l); |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 291 | } |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 292 | for (l = add->garbage.head; l; l = next) { |
| 293 | next = l->next; |
| 294 | link_tail(&target->garbage, l); |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 295 | } |
Craig Tiller | 8b282cb | 2015-04-17 14:57:44 -0700 | [diff] [blame] | 296 | } |
| 297 | |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 298 | void grpc_metadata_batch_filter(grpc_metadata_batch *comd, |
Craig Tiller | 76f5d46 | 2015-04-17 14:58:12 -0700 | [diff] [blame] | 299 | grpc_mdelem *(*filter)(void *user_data, |
| 300 | grpc_mdelem *elem), |
| 301 | void *user_data) { |
Craig Tiller | 205aee1 | 2015-04-16 14:46:41 -0700 | [diff] [blame] | 302 | grpc_linked_mdelem *l; |
| 303 | grpc_linked_mdelem *next; |
| 304 | |
| 305 | assert_valid_list(&comd->list); |
| 306 | assert_valid_list(&comd->garbage); |
| 307 | for (l = comd->list.head; l; l = next) { |
| 308 | grpc_mdelem *orig = l->md; |
| 309 | grpc_mdelem *filt = filter(user_data, orig); |
| 310 | next = l->next; |
| 311 | if (filt == NULL) { |
| 312 | if (l->prev) { |
| 313 | l->prev->next = l->next; |
| 314 | } |
| 315 | if (l->next) { |
| 316 | l->next->prev = l->prev; |
| 317 | } |
| 318 | if (comd->list.head == l) { |
| 319 | comd->list.head = l->next; |
| 320 | } |
| 321 | if (comd->list.tail == l) { |
| 322 | comd->list.tail = l->prev; |
| 323 | } |
| 324 | assert_valid_list(&comd->list); |
| 325 | link_head(&comd->garbage, l); |
| 326 | } else if (filt != orig) { |
| 327 | grpc_mdelem_unref(orig); |
| 328 | l->md = filt; |
| 329 | } |
| 330 | } |
| 331 | assert_valid_list(&comd->list); |
| 332 | assert_valid_list(&comd->garbage); |
| 333 | } |