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/*
*
* 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.
*
*/
#include "src/core/lib/debug/stats.h"
#include <inttypes.h>
#include <string.h>
#include <grpc/support/alloc.h>
#include <grpc/support/string_util.h>
#include <grpc/support/useful.h>
#include "src/core/lib/support/string.h"
grpc_stats_data *grpc_stats_per_cpu_storage = NULL;
static size_t g_num_cores;
void grpc_stats_init(void) {
g_num_cores = GPR_MAX(1, gpr_cpu_num_cores());
grpc_stats_per_cpu_storage =
gpr_zalloc(sizeof(grpc_stats_data) * g_num_cores);
}
void grpc_stats_shutdown(void) { gpr_free(grpc_stats_per_cpu_storage); }
void grpc_stats_collect(grpc_stats_data *output) {
memset(output, 0, sizeof(*output));
for (size_t core = 0; core < g_num_cores; core++) {
for (size_t i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
output->counters[i] += gpr_atm_no_barrier_load(
&grpc_stats_per_cpu_storage[core].counters[i]);
}
}
}
char *grpc_stats_data_as_json(const grpc_stats_data *data) {
gpr_strvec v;
char *tmp;
bool is_first = true;
gpr_strvec_init(&v);
gpr_strvec_add(&v, gpr_strdup("{"));
for (size_t i = 0; i < GRPC_STATS_COUNTER_COUNT; i++) {
gpr_asprintf(&tmp, "%s\"%s\": %" PRIdPTR, is_first ? "" : ", ",
grpc_stats_counter_name[i], data->counters[i]);
gpr_strvec_add(&v, tmp);
is_first = false;
}
gpr_strvec_add(&v, gpr_strdup("}"));
tmp = gpr_strvec_flatten(&v, NULL);
gpr_strvec_destroy(&v);
return tmp;
}
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