| /* |
| * |
| * Copyright 2017 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #ifndef GRPC_CORE_LIB_DEBUG_STATS_H |
| #define GRPC_CORE_LIB_DEBUG_STATS_H |
| |
| #include <grpc/support/atm.h> |
| #include "src/core/lib/debug/stats_data.h" |
| #include "src/core/lib/iomgr/exec_ctx.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef struct grpc_stats_data { |
| gpr_atm counters[GRPC_STATS_COUNTER_COUNT]; |
| gpr_atm histograms[GRPC_STATS_HISTOGRAM_BUCKETS]; |
| } grpc_stats_data; |
| |
| extern grpc_stats_data* grpc_stats_per_cpu_storage; |
| |
| #define GRPC_THREAD_STATS_DATA(exec_ctx) \ |
| (&grpc_stats_per_cpu_storage[(exec_ctx)->starting_cpu]) |
| |
| #define GRPC_STATS_INC_COUNTER(exec_ctx, ctr) \ |
| (gpr_atm_no_barrier_fetch_add( \ |
| &GRPC_THREAD_STATS_DATA((exec_ctx))->counters[(ctr)], 1)) |
| |
| #define GRPC_STATS_INC_HISTOGRAM(exec_ctx, histogram, index) \ |
| (gpr_atm_no_barrier_fetch_add( \ |
| &GRPC_THREAD_STATS_DATA((exec_ctx)) \ |
| ->histograms[histogram##_FIRST_SLOT + (index)], \ |
| 1)) |
| |
| void grpc_stats_init(void); |
| void grpc_stats_shutdown(void); |
| void grpc_stats_collect(grpc_stats_data* output); |
| // c = b-a |
| void grpc_stats_diff(const grpc_stats_data* b, const grpc_stats_data* a, |
| grpc_stats_data* c); |
| char* grpc_stats_data_as_json(const grpc_stats_data* data); |
| int grpc_stats_histo_find_bucket_slow(grpc_exec_ctx* exec_ctx, int value, |
| const int* table, int table_size); |
| double grpc_stats_histo_percentile(const grpc_stats_data* data, |
| grpc_stats_histograms histogram, |
| double percentile); |
| size_t grpc_stats_histo_count(const grpc_stats_data* data, |
| grpc_stats_histograms histogram); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |