Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright 2016, 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/lib/iomgr/resource_quota.h" |
| 35 | |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 36 | #include <limits.h> |
| 37 | #include <stdint.h> |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 38 | #include <string.h> |
| 39 | |
| 40 | #include <grpc/support/alloc.h> |
| 41 | #include <grpc/support/log.h> |
| 42 | #include <grpc/support/string_util.h> |
| 43 | #include <grpc/support/useful.h> |
| 44 | |
| 45 | #include "src/core/lib/iomgr/combiner.h" |
| 46 | |
| 47 | int grpc_resource_quota_trace = 0; |
| 48 | |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 49 | #define MEMORY_USAGE_ESTIMATION_MAX 65536 |
| 50 | |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 51 | /* Internal linked list pointers for a resource user */ |
| 52 | typedef struct { |
| 53 | grpc_resource_user *next; |
| 54 | grpc_resource_user *prev; |
| 55 | } grpc_resource_user_link; |
| 56 | |
| 57 | /* Resource users are kept in (potentially) several intrusive linked lists |
| 58 | at once. These are the list names. */ |
| 59 | typedef enum { |
| 60 | /* Resource users that are waiting for an allocation */ |
| 61 | GRPC_RULIST_AWAITING_ALLOCATION, |
| 62 | /* Resource users that have free memory available for internal reclamation */ |
| 63 | GRPC_RULIST_NON_EMPTY_FREE_POOL, |
| 64 | /* Resource users that have published a benign reclamation is available */ |
| 65 | GRPC_RULIST_RECLAIMER_BENIGN, |
| 66 | /* Resource users that have published a destructive reclamation is |
| 67 | available */ |
| 68 | GRPC_RULIST_RECLAIMER_DESTRUCTIVE, |
| 69 | /* Number of lists: must be last */ |
| 70 | GRPC_RULIST_COUNT |
| 71 | } grpc_rulist; |
| 72 | |
| 73 | struct grpc_resource_user { |
| 74 | /* The quota this resource user consumes from */ |
| 75 | grpc_resource_quota *resource_quota; |
| 76 | |
| 77 | /* Closure to schedule an allocation under the resource quota combiner lock */ |
| 78 | grpc_closure allocate_closure; |
| 79 | /* Closure to publish a non empty free pool under the resource quota combiner |
| 80 | lock */ |
| 81 | grpc_closure add_to_free_pool_closure; |
| 82 | |
| 83 | /* one ref for each ref call (released by grpc_resource_user_unref), and one |
| 84 | ref for each byte allocated (released by grpc_resource_user_free) */ |
| 85 | gpr_atm refs; |
| 86 | /* is this resource user unlocked? starts at 0, increases for each shutdown |
| 87 | call */ |
| 88 | gpr_atm shutdown; |
| 89 | |
| 90 | gpr_mu mu; |
| 91 | /* The amount of memory (in bytes) this user has cached for its own use: to |
| 92 | avoid quota contention, each resource user can keep some memory in |
| 93 | addition to what it is immediately using (e.g., for caching), and the quota |
| 94 | can pull it back under memory pressure. |
| 95 | This value can become negative if more memory has been requested than |
| 96 | existed in the free pool, at which point the quota is consulted to bring |
| 97 | this value non-negative (asynchronously). */ |
| 98 | int64_t free_pool; |
| 99 | /* A list of closures to call once free_pool becomes non-negative - ie when |
| 100 | all outstanding allocations have been granted. */ |
| 101 | grpc_closure_list on_allocated; |
| 102 | /* True if we are currently trying to allocate from the quota, false if not */ |
| 103 | bool allocating; |
| 104 | /* True if we are currently trying to add ourselves to the non-free quota |
| 105 | list, false otherwise */ |
| 106 | bool added_to_free_pool; |
| 107 | |
| 108 | /* Reclaimers: index 0 is the benign reclaimer, 1 is the destructive reclaimer |
| 109 | */ |
| 110 | grpc_closure *reclaimers[2]; |
Craig Tiller | c0c0dbc | 2016-11-29 10:10:21 -0800 | [diff] [blame] | 111 | /* Reclaimers just posted: once we're in the combiner lock, we'll move them |
| 112 | to the array above */ |
| 113 | grpc_closure *new_reclaimers[2]; |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 114 | /* Trampoline closures to finish reclamation and re-enter the quota combiner |
| 115 | lock */ |
| 116 | grpc_closure post_reclaimer_closure[2]; |
| 117 | |
| 118 | /* Closure to execute under the quota combiner to de-register and shutdown the |
| 119 | resource user */ |
| 120 | grpc_closure destroy_closure; |
| 121 | |
| 122 | /* Links in the various grpc_rulist lists */ |
| 123 | grpc_resource_user_link links[GRPC_RULIST_COUNT]; |
| 124 | |
| 125 | /* The name of this resource user, for debugging/tracing */ |
| 126 | char *name; |
| 127 | }; |
| 128 | |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 129 | struct grpc_resource_quota { |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 130 | /* refcount */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 131 | gpr_refcount refs; |
| 132 | |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 133 | /* estimate of current memory usage |
| 134 | scaled to the range [0..RESOURCE_USAGE_ESTIMATION_MAX] */ |
| 135 | gpr_atm memory_usage_estimation; |
| 136 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 137 | /* Master combiner lock: all activity on a quota executes under this combiner |
Craig Tiller | eb30c80 | 2016-12-27 16:03:43 -0800 | [diff] [blame] | 138 | * (so no mutex is needed for this data structure) */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 139 | grpc_combiner *combiner; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 140 | /* Size of the resource quota */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 141 | int64_t size; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 142 | /* Amount of free memory in the resource quota */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 143 | int64_t free_pool; |
| 144 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 145 | /* Has rq_step been scheduled to occur? */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 146 | bool step_scheduled; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 147 | /* Are we currently reclaiming memory */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 148 | bool reclaiming; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 149 | /* Closure around rq_step */ |
| 150 | grpc_closure rq_step_closure; |
| 151 | /* Closure around rq_reclamation_done */ |
| 152 | grpc_closure rq_reclamation_done_closure; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 153 | |
Craig Tiller | 13b9a9a | 2016-12-02 12:43:09 -0800 | [diff] [blame] | 154 | /* This is only really usable for debugging: it's always a stale pointer, but |
| 155 | a stale pointer that might just be fresh enough to guide us to where the |
| 156 | reclamation system is stuck */ |
| 157 | grpc_closure *debug_only_last_initiated_reclaimer; |
| 158 | grpc_resource_user *debug_only_last_reclaimer_resource_user; |
| 159 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 160 | /* Roots of all resource user lists */ |
| 161 | grpc_resource_user *roots[GRPC_RULIST_COUNT]; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 162 | |
| 163 | char *name; |
| 164 | }; |
| 165 | |
| 166 | /******************************************************************************* |
| 167 | * list management |
| 168 | */ |
| 169 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 170 | static void rulist_add_head(grpc_resource_user *resource_user, |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 171 | grpc_rulist list) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 172 | grpc_resource_quota *resource_quota = resource_user->resource_quota; |
| 173 | grpc_resource_user **root = &resource_quota->roots[list]; |
| 174 | if (*root == NULL) { |
| 175 | *root = resource_user; |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 176 | resource_user->links[list].next = resource_user->links[list].prev = |
| 177 | resource_user; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 178 | } else { |
| 179 | resource_user->links[list].next = *root; |
| 180 | resource_user->links[list].prev = (*root)->links[list].prev; |
| 181 | resource_user->links[list].next->links[list].prev = |
| 182 | resource_user->links[list].prev->links[list].next = resource_user; |
Craig Tiller | 8abc796 | 2016-10-26 21:31:29 -0700 | [diff] [blame] | 183 | *root = resource_user; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 184 | } |
| 185 | } |
| 186 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 187 | static void rulist_add_tail(grpc_resource_user *resource_user, |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 188 | grpc_rulist list) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 189 | grpc_resource_quota *resource_quota = resource_user->resource_quota; |
| 190 | grpc_resource_user **root = &resource_quota->roots[list]; |
| 191 | if (*root == NULL) { |
| 192 | *root = resource_user; |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 193 | resource_user->links[list].next = resource_user->links[list].prev = |
| 194 | resource_user; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 195 | } else { |
| 196 | resource_user->links[list].next = (*root)->links[list].next; |
| 197 | resource_user->links[list].prev = *root; |
| 198 | resource_user->links[list].next->links[list].prev = |
| 199 | resource_user->links[list].prev->links[list].next = resource_user; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 200 | } |
| 201 | } |
| 202 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 203 | static bool rulist_empty(grpc_resource_quota *resource_quota, |
| 204 | grpc_rulist list) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 205 | return resource_quota->roots[list] == NULL; |
| 206 | } |
| 207 | |
Craig Tiller | 8abc796 | 2016-10-26 21:31:29 -0700 | [diff] [blame] | 208 | static grpc_resource_user *rulist_pop_head(grpc_resource_quota *resource_quota, |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 209 | grpc_rulist list) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 210 | grpc_resource_user **root = &resource_quota->roots[list]; |
| 211 | grpc_resource_user *resource_user = *root; |
| 212 | if (resource_user == NULL) { |
| 213 | return NULL; |
| 214 | } |
| 215 | if (resource_user->links[list].next == resource_user) { |
| 216 | *root = NULL; |
| 217 | } else { |
| 218 | resource_user->links[list].next->links[list].prev = |
| 219 | resource_user->links[list].prev; |
| 220 | resource_user->links[list].prev->links[list].next = |
| 221 | resource_user->links[list].next; |
| 222 | *root = resource_user->links[list].next; |
| 223 | } |
| 224 | resource_user->links[list].next = resource_user->links[list].prev = NULL; |
| 225 | return resource_user; |
| 226 | } |
| 227 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 228 | static void rulist_remove(grpc_resource_user *resource_user, grpc_rulist list) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 229 | if (resource_user->links[list].next == NULL) return; |
| 230 | grpc_resource_quota *resource_quota = resource_user->resource_quota; |
| 231 | if (resource_quota->roots[list] == resource_user) { |
| 232 | resource_quota->roots[list] = resource_user->links[list].next; |
| 233 | if (resource_quota->roots[list] == resource_user) { |
| 234 | resource_quota->roots[list] = NULL; |
| 235 | } |
| 236 | } |
| 237 | resource_user->links[list].next->links[list].prev = |
| 238 | resource_user->links[list].prev; |
| 239 | resource_user->links[list].prev->links[list].next = |
| 240 | resource_user->links[list].next; |
Craig Tiller | ab5a499 | 2016-12-02 17:17:07 -0800 | [diff] [blame] | 241 | resource_user->links[list].next = resource_user->links[list].prev = NULL; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | /******************************************************************************* |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 245 | * resource quota state machine |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 246 | */ |
| 247 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 248 | static bool rq_alloc(grpc_exec_ctx *exec_ctx, |
| 249 | grpc_resource_quota *resource_quota); |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 250 | static bool rq_reclaim_from_per_user_free_pool( |
| 251 | grpc_exec_ctx *exec_ctx, grpc_resource_quota *resource_quota); |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 252 | static bool rq_reclaim(grpc_exec_ctx *exec_ctx, |
| 253 | grpc_resource_quota *resource_quota, bool destructive); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 254 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 255 | static void rq_step(grpc_exec_ctx *exec_ctx, void *rq, grpc_error *error) { |
| 256 | grpc_resource_quota *resource_quota = rq; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 257 | resource_quota->step_scheduled = false; |
| 258 | do { |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 259 | if (rq_alloc(exec_ctx, resource_quota)) goto done; |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 260 | } while (rq_reclaim_from_per_user_free_pool(exec_ctx, resource_quota)); |
Sree Kuchibhotla | 894db55 | 2016-10-28 18:25:24 -0700 | [diff] [blame] | 261 | |
| 262 | if (!rq_reclaim(exec_ctx, resource_quota, false)) { |
| 263 | rq_reclaim(exec_ctx, resource_quota, true); |
| 264 | } |
| 265 | |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 266 | done: |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 267 | grpc_resource_quota_unref_internal(exec_ctx, resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 268 | } |
| 269 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 270 | static void rq_step_sched(grpc_exec_ctx *exec_ctx, |
| 271 | grpc_resource_quota *resource_quota) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 272 | if (resource_quota->step_scheduled) return; |
| 273 | resource_quota->step_scheduled = true; |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 274 | grpc_resource_quota_ref_internal(resource_quota); |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 275 | grpc_closure_sched(exec_ctx, &resource_quota->rq_step_closure, |
| 276 | GRPC_ERROR_NONE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 277 | } |
| 278 | |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 279 | /* update the atomically available resource estimate - use no barriers since |
| 280 | timeliness of delivery really doesn't matter much */ |
| 281 | static void rq_update_estimate(grpc_resource_quota *resource_quota) { |
| 282 | gpr_atm_no_barrier_store(&resource_quota->memory_usage_estimation, |
| 283 | (gpr_atm)((1.0 - |
| 284 | ((double)resource_quota->free_pool) / |
| 285 | ((double)resource_quota->size)) * |
| 286 | MEMORY_USAGE_ESTIMATION_MAX)); |
| 287 | } |
| 288 | |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 289 | /* returns true if all allocations are completed */ |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 290 | static bool rq_alloc(grpc_exec_ctx *exec_ctx, |
| 291 | grpc_resource_quota *resource_quota) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 292 | grpc_resource_user *resource_user; |
Craig Tiller | 8abc796 | 2016-10-26 21:31:29 -0700 | [diff] [blame] | 293 | while ((resource_user = rulist_pop_head(resource_quota, |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 294 | GRPC_RULIST_AWAITING_ALLOCATION))) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 295 | gpr_mu_lock(&resource_user->mu); |
| 296 | if (resource_user->free_pool < 0 && |
| 297 | -resource_user->free_pool <= resource_quota->free_pool) { |
| 298 | int64_t amt = -resource_user->free_pool; |
| 299 | resource_user->free_pool = 0; |
| 300 | resource_quota->free_pool -= amt; |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 301 | rq_update_estimate(resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 302 | if (grpc_resource_quota_trace) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 303 | gpr_log(GPR_DEBUG, "RQ %s %s: grant alloc %" PRId64 |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 304 | " bytes; rq_free_pool -> %" PRId64, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 305 | resource_quota->name, resource_user->name, amt, |
| 306 | resource_quota->free_pool); |
| 307 | } |
| 308 | } else if (grpc_resource_quota_trace && resource_user->free_pool >= 0) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 309 | gpr_log(GPR_DEBUG, "RQ %s %s: discard already satisfied alloc request", |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 310 | resource_quota->name, resource_user->name); |
| 311 | } |
| 312 | if (resource_user->free_pool >= 0) { |
| 313 | resource_user->allocating = false; |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 314 | grpc_closure_list_sched(exec_ctx, &resource_user->on_allocated); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 315 | gpr_mu_unlock(&resource_user->mu); |
| 316 | } else { |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 317 | rulist_add_head(resource_user, GRPC_RULIST_AWAITING_ALLOCATION); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 318 | gpr_mu_unlock(&resource_user->mu); |
| 319 | return false; |
| 320 | } |
| 321 | } |
| 322 | return true; |
| 323 | } |
| 324 | |
| 325 | /* returns true if any memory could be reclaimed from buffers */ |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 326 | static bool rq_reclaim_from_per_user_free_pool( |
| 327 | grpc_exec_ctx *exec_ctx, grpc_resource_quota *resource_quota) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 328 | grpc_resource_user *resource_user; |
Craig Tiller | 8abc796 | 2016-10-26 21:31:29 -0700 | [diff] [blame] | 329 | while ((resource_user = rulist_pop_head(resource_quota, |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 330 | GRPC_RULIST_NON_EMPTY_FREE_POOL))) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 331 | gpr_mu_lock(&resource_user->mu); |
| 332 | if (resource_user->free_pool > 0) { |
| 333 | int64_t amt = resource_user->free_pool; |
| 334 | resource_user->free_pool = 0; |
| 335 | resource_quota->free_pool += amt; |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 336 | rq_update_estimate(resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 337 | if (grpc_resource_quota_trace) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 338 | gpr_log(GPR_DEBUG, "RQ %s %s: reclaim_from_per_user_free_pool %" PRId64 |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 339 | " bytes; rq_free_pool -> %" PRId64, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 340 | resource_quota->name, resource_user->name, amt, |
| 341 | resource_quota->free_pool); |
| 342 | } |
| 343 | gpr_mu_unlock(&resource_user->mu); |
| 344 | return true; |
| 345 | } else { |
| 346 | gpr_mu_unlock(&resource_user->mu); |
| 347 | } |
| 348 | } |
| 349 | return false; |
| 350 | } |
| 351 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 352 | /* returns true if reclamation is proceeding */ |
| 353 | static bool rq_reclaim(grpc_exec_ctx *exec_ctx, |
| 354 | grpc_resource_quota *resource_quota, bool destructive) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 355 | if (resource_quota->reclaiming) return true; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 356 | grpc_rulist list = destructive ? GRPC_RULIST_RECLAIMER_DESTRUCTIVE |
| 357 | : GRPC_RULIST_RECLAIMER_BENIGN; |
Craig Tiller | 8abc796 | 2016-10-26 21:31:29 -0700 | [diff] [blame] | 358 | grpc_resource_user *resource_user = rulist_pop_head(resource_quota, list); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 359 | if (resource_user == NULL) return false; |
| 360 | if (grpc_resource_quota_trace) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 361 | gpr_log(GPR_DEBUG, "RQ %s %s: initiate %s reclamation", |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 362 | resource_quota->name, resource_user->name, |
| 363 | destructive ? "destructive" : "benign"); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 364 | } |
| 365 | resource_quota->reclaiming = true; |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 366 | grpc_resource_quota_ref_internal(resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 367 | grpc_closure *c = resource_user->reclaimers[destructive]; |
Craig Tiller | 13b9a9a | 2016-12-02 12:43:09 -0800 | [diff] [blame] | 368 | GPR_ASSERT(c); |
| 369 | resource_quota->debug_only_last_reclaimer_resource_user = resource_user; |
| 370 | resource_quota->debug_only_last_initiated_reclaimer = c; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 371 | resource_user->reclaimers[destructive] = NULL; |
| 372 | grpc_closure_run(exec_ctx, c, GRPC_ERROR_NONE); |
| 373 | return true; |
| 374 | } |
| 375 | |
| 376 | /******************************************************************************* |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 377 | * ru_slice: a slice implementation that is backed by a grpc_resource_user |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 378 | */ |
| 379 | |
| 380 | typedef struct { |
Craig Tiller | d41a4a7 | 2016-10-26 16:16:06 -0700 | [diff] [blame] | 381 | grpc_slice_refcount base; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 382 | gpr_refcount refs; |
| 383 | grpc_resource_user *resource_user; |
| 384 | size_t size; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 385 | } ru_slice_refcount; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 386 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 387 | static void ru_slice_ref(void *p) { |
| 388 | ru_slice_refcount *rc = p; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 389 | gpr_ref(&rc->refs); |
| 390 | } |
| 391 | |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 392 | static void ru_slice_unref(grpc_exec_ctx *exec_ctx, void *p) { |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 393 | ru_slice_refcount *rc = p; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 394 | if (gpr_unref(&rc->refs)) { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 395 | grpc_resource_user_free(exec_ctx, rc->resource_user, rc->size); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 396 | gpr_free(rc); |
| 397 | } |
| 398 | } |
| 399 | |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 400 | static const grpc_slice_refcount_vtable ru_slice_vtable = { |
| 401 | ru_slice_ref, ru_slice_unref, grpc_slice_default_eq_impl, |
| 402 | grpc_slice_default_hash_impl}; |
| 403 | |
Craig Tiller | d41a4a7 | 2016-10-26 16:16:06 -0700 | [diff] [blame] | 404 | static grpc_slice ru_slice_create(grpc_resource_user *resource_user, |
Craig Tiller | 28b7242 | 2016-10-26 21:15:29 -0700 | [diff] [blame] | 405 | size_t size) { |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 406 | ru_slice_refcount *rc = gpr_malloc(sizeof(ru_slice_refcount) + size); |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 407 | rc->base.vtable = &ru_slice_vtable; |
| 408 | rc->base.sub_refcount = &rc->base; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 409 | gpr_ref_init(&rc->refs, 1); |
| 410 | rc->resource_user = resource_user; |
| 411 | rc->size = size; |
Craig Tiller | d41a4a7 | 2016-10-26 16:16:06 -0700 | [diff] [blame] | 412 | grpc_slice slice; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 413 | slice.refcount = &rc->base; |
| 414 | slice.data.refcounted.bytes = (uint8_t *)(rc + 1); |
| 415 | slice.data.refcounted.length = size; |
| 416 | return slice; |
| 417 | } |
| 418 | |
| 419 | /******************************************************************************* |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 420 | * grpc_resource_quota internal implementation: resource user manipulation under |
| 421 | * the combiner |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 422 | */ |
| 423 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 424 | static void ru_allocate(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) { |
| 425 | grpc_resource_user *resource_user = ru; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 426 | if (rulist_empty(resource_user->resource_quota, |
| 427 | GRPC_RULIST_AWAITING_ALLOCATION)) { |
| 428 | rq_step_sched(exec_ctx, resource_user->resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 429 | } |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 430 | rulist_add_tail(resource_user, GRPC_RULIST_AWAITING_ALLOCATION); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 431 | } |
| 432 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 433 | static void ru_add_to_free_pool(grpc_exec_ctx *exec_ctx, void *ru, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 434 | grpc_error *error) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 435 | grpc_resource_user *resource_user = ru; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 436 | if (!rulist_empty(resource_user->resource_quota, |
| 437 | GRPC_RULIST_AWAITING_ALLOCATION) && |
| 438 | rulist_empty(resource_user->resource_quota, |
| 439 | GRPC_RULIST_NON_EMPTY_FREE_POOL)) { |
| 440 | rq_step_sched(exec_ctx, resource_user->resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 441 | } |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 442 | rulist_add_tail(resource_user, GRPC_RULIST_NON_EMPTY_FREE_POOL); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 443 | } |
| 444 | |
Craig Tiller | c0c0dbc | 2016-11-29 10:10:21 -0800 | [diff] [blame] | 445 | static bool ru_post_reclaimer(grpc_exec_ctx *exec_ctx, |
| 446 | grpc_resource_user *resource_user, |
| 447 | bool destructive) { |
| 448 | grpc_closure *closure = resource_user->new_reclaimers[destructive]; |
| 449 | GPR_ASSERT(closure != NULL); |
| 450 | resource_user->new_reclaimers[destructive] = NULL; |
| 451 | GPR_ASSERT(resource_user->reclaimers[destructive] == NULL); |
| 452 | if (gpr_atm_acq_load(&resource_user->shutdown) > 0) { |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 453 | grpc_closure_sched(exec_ctx, closure, GRPC_ERROR_CANCELLED); |
Craig Tiller | c0c0dbc | 2016-11-29 10:10:21 -0800 | [diff] [blame] | 454 | return false; |
| 455 | } |
| 456 | resource_user->reclaimers[destructive] = closure; |
| 457 | return true; |
| 458 | } |
| 459 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 460 | static void ru_post_benign_reclaimer(grpc_exec_ctx *exec_ctx, void *ru, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 461 | grpc_error *error) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 462 | grpc_resource_user *resource_user = ru; |
Craig Tiller | c0c0dbc | 2016-11-29 10:10:21 -0800 | [diff] [blame] | 463 | if (!ru_post_reclaimer(exec_ctx, resource_user, false)) return; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 464 | if (!rulist_empty(resource_user->resource_quota, |
| 465 | GRPC_RULIST_AWAITING_ALLOCATION) && |
| 466 | rulist_empty(resource_user->resource_quota, |
| 467 | GRPC_RULIST_NON_EMPTY_FREE_POOL) && |
| 468 | rulist_empty(resource_user->resource_quota, |
| 469 | GRPC_RULIST_RECLAIMER_BENIGN)) { |
| 470 | rq_step_sched(exec_ctx, resource_user->resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 471 | } |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 472 | rulist_add_tail(resource_user, GRPC_RULIST_RECLAIMER_BENIGN); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 473 | } |
| 474 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 475 | static void ru_post_destructive_reclaimer(grpc_exec_ctx *exec_ctx, void *ru, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 476 | grpc_error *error) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 477 | grpc_resource_user *resource_user = ru; |
Craig Tiller | c0c0dbc | 2016-11-29 10:10:21 -0800 | [diff] [blame] | 478 | if (!ru_post_reclaimer(exec_ctx, resource_user, true)) return; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 479 | if (!rulist_empty(resource_user->resource_quota, |
| 480 | GRPC_RULIST_AWAITING_ALLOCATION) && |
| 481 | rulist_empty(resource_user->resource_quota, |
| 482 | GRPC_RULIST_NON_EMPTY_FREE_POOL) && |
| 483 | rulist_empty(resource_user->resource_quota, |
| 484 | GRPC_RULIST_RECLAIMER_BENIGN) && |
| 485 | rulist_empty(resource_user->resource_quota, |
| 486 | GRPC_RULIST_RECLAIMER_DESTRUCTIVE)) { |
| 487 | rq_step_sched(exec_ctx, resource_user->resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 488 | } |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 489 | rulist_add_tail(resource_user, GRPC_RULIST_RECLAIMER_DESTRUCTIVE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 490 | } |
| 491 | |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 492 | static void ru_shutdown(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) { |
| 493 | grpc_resource_user *resource_user = ru; |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 494 | grpc_closure_sched(exec_ctx, resource_user->reclaimers[0], |
| 495 | GRPC_ERROR_CANCELLED); |
| 496 | grpc_closure_sched(exec_ctx, resource_user->reclaimers[1], |
| 497 | GRPC_ERROR_CANCELLED); |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 498 | resource_user->reclaimers[0] = NULL; |
| 499 | resource_user->reclaimers[1] = NULL; |
Craig Tiller | 13b9a9a | 2016-12-02 12:43:09 -0800 | [diff] [blame] | 500 | rulist_remove(resource_user, GRPC_RULIST_RECLAIMER_BENIGN); |
| 501 | rulist_remove(resource_user, GRPC_RULIST_RECLAIMER_DESTRUCTIVE); |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 502 | } |
| 503 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 504 | static void ru_destroy(grpc_exec_ctx *exec_ctx, void *ru, grpc_error *error) { |
| 505 | grpc_resource_user *resource_user = ru; |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 506 | GPR_ASSERT(gpr_atm_no_barrier_load(&resource_user->refs) == 0); |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 507 | for (int i = 0; i < GRPC_RULIST_COUNT; i++) { |
| 508 | rulist_remove(resource_user, (grpc_rulist)i); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 509 | } |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 510 | grpc_closure_sched(exec_ctx, resource_user->reclaimers[0], |
| 511 | GRPC_ERROR_CANCELLED); |
| 512 | grpc_closure_sched(exec_ctx, resource_user->reclaimers[1], |
| 513 | GRPC_ERROR_CANCELLED); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 514 | if (resource_user->free_pool != 0) { |
| 515 | resource_user->resource_quota->free_pool += resource_user->free_pool; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 516 | rq_step_sched(exec_ctx, resource_user->resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 517 | } |
Craig Tiller | 87a7e1f | 2016-11-09 09:42:19 -0800 | [diff] [blame] | 518 | grpc_resource_quota_unref_internal(exec_ctx, resource_user->resource_quota); |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 519 | gpr_mu_destroy(&resource_user->mu); |
| 520 | gpr_free(resource_user->name); |
| 521 | gpr_free(resource_user); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 522 | } |
| 523 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 524 | static void ru_allocated_slices(grpc_exec_ctx *exec_ctx, void *arg, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 525 | grpc_error *error) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 526 | grpc_resource_user_slice_allocator *slice_allocator = arg; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 527 | if (error == GRPC_ERROR_NONE) { |
| 528 | for (size_t i = 0; i < slice_allocator->count; i++) { |
Craig Tiller | d41a4a7 | 2016-10-26 16:16:06 -0700 | [diff] [blame] | 529 | grpc_slice_buffer_add_indexed( |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 530 | slice_allocator->dest, ru_slice_create(slice_allocator->resource_user, |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 531 | slice_allocator->length)); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 532 | } |
| 533 | } |
| 534 | grpc_closure_run(exec_ctx, &slice_allocator->on_done, GRPC_ERROR_REF(error)); |
| 535 | } |
| 536 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 537 | /******************************************************************************* |
| 538 | * grpc_resource_quota internal implementation: quota manipulation under the |
| 539 | * combiner |
| 540 | */ |
| 541 | |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 542 | typedef struct { |
| 543 | int64_t size; |
| 544 | grpc_resource_quota *resource_quota; |
| 545 | grpc_closure closure; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 546 | } rq_resize_args; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 547 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 548 | static void rq_resize(grpc_exec_ctx *exec_ctx, void *args, grpc_error *error) { |
| 549 | rq_resize_args *a = args; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 550 | int64_t delta = a->size - a->resource_quota->size; |
| 551 | a->resource_quota->size += delta; |
| 552 | a->resource_quota->free_pool += delta; |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 553 | rq_update_estimate(a->resource_quota); |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 554 | rq_step_sched(exec_ctx, a->resource_quota); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 555 | grpc_resource_quota_unref_internal(exec_ctx, a->resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 556 | gpr_free(a); |
| 557 | } |
| 558 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 559 | static void rq_reclamation_done(grpc_exec_ctx *exec_ctx, void *rq, |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 560 | grpc_error *error) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 561 | grpc_resource_quota *resource_quota = rq; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 562 | resource_quota->reclaiming = false; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 563 | rq_step_sched(exec_ctx, resource_quota); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 564 | grpc_resource_quota_unref_internal(exec_ctx, resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 565 | } |
| 566 | |
| 567 | /******************************************************************************* |
| 568 | * grpc_resource_quota api |
| 569 | */ |
| 570 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 571 | /* Public API */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 572 | grpc_resource_quota *grpc_resource_quota_create(const char *name) { |
| 573 | grpc_resource_quota *resource_quota = gpr_malloc(sizeof(*resource_quota)); |
| 574 | gpr_ref_init(&resource_quota->refs, 1); |
| 575 | resource_quota->combiner = grpc_combiner_create(NULL); |
| 576 | resource_quota->free_pool = INT64_MAX; |
| 577 | resource_quota->size = INT64_MAX; |
| 578 | resource_quota->step_scheduled = false; |
| 579 | resource_quota->reclaiming = false; |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 580 | gpr_atm_no_barrier_store(&resource_quota->memory_usage_estimation, 0); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 581 | if (name != NULL) { |
| 582 | resource_quota->name = gpr_strdup(name); |
| 583 | } else { |
| 584 | gpr_asprintf(&resource_quota->name, "anonymous_pool_%" PRIxPTR, |
| 585 | (intptr_t)resource_quota); |
| 586 | } |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 587 | grpc_closure_init( |
| 588 | &resource_quota->rq_step_closure, rq_step, resource_quota, |
| 589 | grpc_combiner_finally_scheduler(resource_quota->combiner, true)); |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 590 | grpc_closure_init(&resource_quota->rq_reclamation_done_closure, |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 591 | rq_reclamation_done, resource_quota, |
| 592 | grpc_combiner_scheduler(resource_quota->combiner, false)); |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 593 | for (int i = 0; i < GRPC_RULIST_COUNT; i++) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 594 | resource_quota->roots[i] = NULL; |
| 595 | } |
| 596 | return resource_quota; |
| 597 | } |
| 598 | |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 599 | void grpc_resource_quota_unref_internal(grpc_exec_ctx *exec_ctx, |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 600 | grpc_resource_quota *resource_quota) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 601 | if (gpr_unref(&resource_quota->refs)) { |
Craig Tiller | 3845e55 | 2017-02-09 15:19:28 -0800 | [diff] [blame^] | 602 | GRPC_COMBINER_UNREF(exec_ctx, resource_quota->combiner, "resource_quota"); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 603 | gpr_free(resource_quota->name); |
| 604 | gpr_free(resource_quota); |
| 605 | } |
| 606 | } |
| 607 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 608 | /* Public API */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 609 | void grpc_resource_quota_unref(grpc_resource_quota *resource_quota) { |
| 610 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 611 | grpc_resource_quota_unref_internal(&exec_ctx, resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 612 | grpc_exec_ctx_finish(&exec_ctx); |
| 613 | } |
| 614 | |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 615 | grpc_resource_quota *grpc_resource_quota_ref_internal( |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 616 | grpc_resource_quota *resource_quota) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 617 | gpr_ref(&resource_quota->refs); |
| 618 | return resource_quota; |
| 619 | } |
| 620 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 621 | /* Public API */ |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 622 | void grpc_resource_quota_ref(grpc_resource_quota *resource_quota) { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 623 | grpc_resource_quota_ref_internal(resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 624 | } |
| 625 | |
Craig Tiller | b38bfc0 | 2016-10-24 13:21:39 -0700 | [diff] [blame] | 626 | double grpc_resource_quota_get_memory_pressure( |
| 627 | grpc_resource_quota *resource_quota) { |
| 628 | return ((double)(gpr_atm_no_barrier_load( |
| 629 | &resource_quota->memory_usage_estimation))) / |
| 630 | ((double)MEMORY_USAGE_ESTIMATION_MAX); |
| 631 | } |
| 632 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 633 | /* Public API */ |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 634 | void grpc_resource_quota_resize(grpc_resource_quota *resource_quota, |
| 635 | size_t size) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 636 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 637 | rq_resize_args *a = gpr_malloc(sizeof(*a)); |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 638 | a->resource_quota = grpc_resource_quota_ref_internal(resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 639 | a->size = (int64_t)size; |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 640 | grpc_closure_init(&a->closure, rq_resize, a, grpc_schedule_on_exec_ctx); |
| 641 | grpc_closure_sched(&exec_ctx, &a->closure, GRPC_ERROR_NONE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 642 | grpc_exec_ctx_finish(&exec_ctx); |
| 643 | } |
| 644 | |
| 645 | /******************************************************************************* |
| 646 | * grpc_resource_user channel args api |
| 647 | */ |
| 648 | |
| 649 | grpc_resource_quota *grpc_resource_quota_from_channel_args( |
| 650 | const grpc_channel_args *channel_args) { |
| 651 | for (size_t i = 0; i < channel_args->num_args; i++) { |
Craig Tiller | 153eaa7 | 2016-10-21 13:52:36 -0700 | [diff] [blame] | 652 | if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 653 | if (channel_args->args[i].type == GRPC_ARG_POINTER) { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 654 | return grpc_resource_quota_ref_internal( |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 655 | channel_args->args[i].value.pointer.p); |
| 656 | } else { |
Craig Tiller | 153eaa7 | 2016-10-21 13:52:36 -0700 | [diff] [blame] | 657 | gpr_log(GPR_DEBUG, GRPC_ARG_RESOURCE_QUOTA " should be a pointer"); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 658 | } |
| 659 | } |
| 660 | } |
| 661 | return grpc_resource_quota_create(NULL); |
| 662 | } |
| 663 | |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 664 | static void *rq_copy(void *rq) { |
| 665 | grpc_resource_quota_ref(rq); |
| 666 | return rq; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 667 | } |
| 668 | |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 669 | static void rq_destroy(grpc_exec_ctx *exec_ctx, void *rq) { |
| 670 | grpc_resource_quota_unref_internal(exec_ctx, rq); |
| 671 | } |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 672 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 673 | static int rq_cmp(void *a, void *b) { return GPR_ICMP(a, b); } |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 674 | |
| 675 | const grpc_arg_pointer_vtable *grpc_resource_quota_arg_vtable(void) { |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 676 | static const grpc_arg_pointer_vtable vtable = {rq_copy, rq_destroy, rq_cmp}; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 677 | return &vtable; |
| 678 | } |
| 679 | |
| 680 | /******************************************************************************* |
| 681 | * grpc_resource_user api |
| 682 | */ |
| 683 | |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 684 | grpc_resource_user *grpc_resource_user_create( |
| 685 | grpc_resource_quota *resource_quota, const char *name) { |
| 686 | grpc_resource_user *resource_user = gpr_malloc(sizeof(*resource_user)); |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 687 | resource_user->resource_quota = |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 688 | grpc_resource_quota_ref_internal(resource_quota); |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 689 | grpc_closure_init(&resource_user->allocate_closure, &ru_allocate, |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 690 | resource_user, |
| 691 | grpc_combiner_scheduler(resource_quota->combiner, false)); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 692 | grpc_closure_init(&resource_user->add_to_free_pool_closure, |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 693 | &ru_add_to_free_pool, resource_user, |
| 694 | grpc_combiner_scheduler(resource_quota->combiner, false)); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 695 | grpc_closure_init(&resource_user->post_reclaimer_closure[0], |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 696 | &ru_post_benign_reclaimer, resource_user, |
| 697 | grpc_combiner_scheduler(resource_quota->combiner, false)); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 698 | grpc_closure_init(&resource_user->post_reclaimer_closure[1], |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 699 | &ru_post_destructive_reclaimer, resource_user, |
| 700 | grpc_combiner_scheduler(resource_quota->combiner, false)); |
| 701 | grpc_closure_init(&resource_user->destroy_closure, &ru_destroy, resource_user, |
| 702 | grpc_combiner_scheduler(resource_quota->combiner, false)); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 703 | gpr_mu_init(&resource_user->mu); |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 704 | gpr_atm_rel_store(&resource_user->refs, 1); |
| 705 | gpr_atm_rel_store(&resource_user->shutdown, 0); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 706 | resource_user->free_pool = 0; |
| 707 | grpc_closure_list_init(&resource_user->on_allocated); |
| 708 | resource_user->allocating = false; |
| 709 | resource_user->added_to_free_pool = false; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 710 | resource_user->reclaimers[0] = NULL; |
| 711 | resource_user->reclaimers[1] = NULL; |
Craig Tiller | c0c0dbc | 2016-11-29 10:10:21 -0800 | [diff] [blame] | 712 | resource_user->new_reclaimers[0] = NULL; |
| 713 | resource_user->new_reclaimers[1] = NULL; |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 714 | for (int i = 0; i < GRPC_RULIST_COUNT; i++) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 715 | resource_user->links[i].next = resource_user->links[i].prev = NULL; |
| 716 | } |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 717 | if (name != NULL) { |
| 718 | resource_user->name = gpr_strdup(name); |
| 719 | } else { |
| 720 | gpr_asprintf(&resource_user->name, "anonymous_resource_user_%" PRIxPTR, |
| 721 | (intptr_t)resource_user); |
| 722 | } |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 723 | return resource_user; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 724 | } |
| 725 | |
Dan Born | e955c1f | 2016-12-20 13:48:11 -0800 | [diff] [blame] | 726 | grpc_resource_quota *grpc_resource_user_quota( |
Craig Tiller | eb30c80 | 2016-12-27 16:03:43 -0800 | [diff] [blame] | 727 | grpc_resource_user *resource_user) { |
| 728 | return resource_user->resource_quota; |
| 729 | } |
| 730 | |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 731 | static void ru_ref_by(grpc_resource_user *resource_user, gpr_atm amount) { |
| 732 | GPR_ASSERT(amount > 0); |
| 733 | GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&resource_user->refs, amount) != 0); |
| 734 | } |
| 735 | |
| 736 | static void ru_unref_by(grpc_exec_ctx *exec_ctx, |
| 737 | grpc_resource_user *resource_user, gpr_atm amount) { |
| 738 | GPR_ASSERT(amount > 0); |
| 739 | gpr_atm old = gpr_atm_full_fetch_add(&resource_user->refs, -amount); |
| 740 | GPR_ASSERT(old >= amount); |
| 741 | if (old == amount) { |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 742 | grpc_closure_sched(exec_ctx, &resource_user->destroy_closure, |
| 743 | GRPC_ERROR_NONE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 744 | } |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 745 | } |
| 746 | |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 747 | void grpc_resource_user_ref(grpc_resource_user *resource_user) { |
| 748 | ru_ref_by(resource_user, 1); |
| 749 | } |
| 750 | |
| 751 | void grpc_resource_user_unref(grpc_exec_ctx *exec_ctx, |
| 752 | grpc_resource_user *resource_user) { |
| 753 | ru_unref_by(exec_ctx, resource_user, 1); |
| 754 | } |
| 755 | |
| 756 | void grpc_resource_user_shutdown(grpc_exec_ctx *exec_ctx, |
| 757 | grpc_resource_user *resource_user) { |
| 758 | if (gpr_atm_full_fetch_add(&resource_user->shutdown, 1) == 0) { |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 759 | grpc_closure_sched(exec_ctx, |
| 760 | grpc_closure_create( |
| 761 | ru_shutdown, resource_user, |
| 762 | grpc_combiner_scheduler( |
| 763 | resource_user->resource_quota->combiner, false)), |
| 764 | GRPC_ERROR_NONE); |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 765 | } |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | void grpc_resource_user_alloc(grpc_exec_ctx *exec_ctx, |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 769 | grpc_resource_user *resource_user, size_t size, |
| 770 | grpc_closure *optional_on_done) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 771 | gpr_mu_lock(&resource_user->mu); |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 772 | ru_ref_by(resource_user, (gpr_atm)size); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 773 | resource_user->free_pool -= (int64_t)size; |
| 774 | if (grpc_resource_quota_trace) { |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 775 | gpr_log(GPR_DEBUG, "RQ %s %s: alloc %" PRIdPTR "; free_pool -> %" PRId64, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 776 | resource_user->resource_quota->name, resource_user->name, size, |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 777 | resource_user->free_pool); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 778 | } |
| 779 | if (resource_user->free_pool < 0) { |
| 780 | grpc_closure_list_append(&resource_user->on_allocated, optional_on_done, |
| 781 | GRPC_ERROR_NONE); |
| 782 | if (!resource_user->allocating) { |
| 783 | resource_user->allocating = true; |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 784 | grpc_closure_sched(exec_ctx, &resource_user->allocate_closure, |
| 785 | GRPC_ERROR_NONE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 786 | } |
| 787 | } else { |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 788 | grpc_closure_sched(exec_ctx, optional_on_done, GRPC_ERROR_NONE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 789 | } |
| 790 | gpr_mu_unlock(&resource_user->mu); |
| 791 | } |
| 792 | |
| 793 | void grpc_resource_user_free(grpc_exec_ctx *exec_ctx, |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 794 | grpc_resource_user *resource_user, size_t size) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 795 | gpr_mu_lock(&resource_user->mu); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 796 | bool was_zero_or_negative = resource_user->free_pool <= 0; |
| 797 | resource_user->free_pool += (int64_t)size; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 798 | if (grpc_resource_quota_trace) { |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 799 | gpr_log(GPR_DEBUG, "RQ %s %s: free %" PRIdPTR "; free_pool -> %" PRId64, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 800 | resource_user->resource_quota->name, resource_user->name, size, |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 801 | resource_user->free_pool); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 802 | } |
| 803 | bool is_bigger_than_zero = resource_user->free_pool > 0; |
| 804 | if (is_bigger_than_zero && was_zero_or_negative && |
| 805 | !resource_user->added_to_free_pool) { |
| 806 | resource_user->added_to_free_pool = true; |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 807 | grpc_closure_sched(exec_ctx, &resource_user->add_to_free_pool_closure, |
| 808 | GRPC_ERROR_NONE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 809 | } |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 810 | gpr_mu_unlock(&resource_user->mu); |
Craig Tiller | a947f1c | 2016-11-04 13:53:17 -0700 | [diff] [blame] | 811 | ru_unref_by(exec_ctx, resource_user, (gpr_atm)size); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | void grpc_resource_user_post_reclaimer(grpc_exec_ctx *exec_ctx, |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 815 | grpc_resource_user *resource_user, |
| 816 | bool destructive, |
| 817 | grpc_closure *closure) { |
Craig Tiller | c0c0dbc | 2016-11-29 10:10:21 -0800 | [diff] [blame] | 818 | GPR_ASSERT(resource_user->new_reclaimers[destructive] == NULL); |
| 819 | resource_user->new_reclaimers[destructive] = closure; |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 820 | grpc_closure_sched(exec_ctx, |
| 821 | &resource_user->post_reclaimer_closure[destructive], |
| 822 | GRPC_ERROR_NONE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 823 | } |
| 824 | |
Craig Tiller | 3798e60 | 2016-10-21 14:39:27 -0700 | [diff] [blame] | 825 | void grpc_resource_user_finish_reclamation(grpc_exec_ctx *exec_ctx, |
| 826 | grpc_resource_user *resource_user) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 827 | if (grpc_resource_quota_trace) { |
Craig Tiller | 6b5d682 | 2016-10-25 16:13:26 -0700 | [diff] [blame] | 828 | gpr_log(GPR_DEBUG, "RQ %s %s: reclamation complete", |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 829 | resource_user->resource_quota->name, resource_user->name); |
| 830 | } |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 831 | grpc_closure_sched( |
| 832 | exec_ctx, &resource_user->resource_quota->rq_reclamation_done_closure, |
| 833 | GRPC_ERROR_NONE); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | void grpc_resource_user_slice_allocator_init( |
| 837 | grpc_resource_user_slice_allocator *slice_allocator, |
| 838 | grpc_resource_user *resource_user, grpc_iomgr_cb_func cb, void *p) { |
Craig Tiller | 5082d7e | 2017-01-26 11:21:11 -0800 | [diff] [blame] | 839 | grpc_closure_init(&slice_allocator->on_allocated, ru_allocated_slices, |
| 840 | slice_allocator, grpc_schedule_on_exec_ctx); |
| 841 | grpc_closure_init(&slice_allocator->on_done, cb, p, |
| 842 | grpc_schedule_on_exec_ctx); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 843 | slice_allocator->resource_user = resource_user; |
| 844 | } |
| 845 | |
| 846 | void grpc_resource_user_alloc_slices( |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 847 | grpc_exec_ctx *exec_ctx, |
| 848 | grpc_resource_user_slice_allocator *slice_allocator, size_t length, |
Craig Tiller | d41a4a7 | 2016-10-26 16:16:06 -0700 | [diff] [blame] | 849 | size_t count, grpc_slice_buffer *dest) { |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 850 | slice_allocator->length = length; |
| 851 | slice_allocator->count = count; |
| 852 | slice_allocator->dest = dest; |
Craig Tiller | afcc875 | 2016-10-18 16:10:06 -0700 | [diff] [blame] | 853 | grpc_resource_user_alloc(exec_ctx, slice_allocator->resource_user, |
| 854 | count * length, &slice_allocator->on_allocated); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 855 | } |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 856 | |
Craig Tiller | 32df467 | 2016-11-04 08:21:56 -0700 | [diff] [blame] | 857 | grpc_slice grpc_resource_user_slice_malloc(grpc_exec_ctx *exec_ctx, |
| 858 | grpc_resource_user *resource_user, |
| 859 | size_t size) { |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 860 | grpc_resource_user_alloc(exec_ctx, resource_user, size, NULL); |
| 861 | return ru_slice_create(resource_user, size); |
| 862 | } |