Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / lib / debug / stats.h

diff --git a/legacy-libs/grpc/deps/grpc/src/core/lib/debug/stats.h b/legacy-libs/grpc/deps/grpc/src/core/lib/debug/stats.h
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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.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_DEBUG_STATS_H
+#define GRPC_CORE_LIB_DEBUG_STATS_H
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/support/atm.h>
+#include "src/core/lib/debug/stats_data.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+
+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() \
+  (&grpc_stats_per_cpu_storage[grpc_core::ExecCtx::Get()->starting_cpu()])
+
+/* Only collect stats if GRPC_COLLECT_STATS is defined or it is a debug build.
+ */
+#if defined(GRPC_COLLECT_STATS) || !defined(NDEBUG)
+#define GRPC_STATS_INC_COUNTER(ctr) \
+  (gpr_atm_no_barrier_fetch_add(&GRPC_THREAD_STATS_DATA()->counters[(ctr)], 1))
+
+#define GRPC_STATS_INC_HISTOGRAM(histogram, index)                             \
+  (gpr_atm_no_barrier_fetch_add(                                               \
+      &GRPC_THREAD_STATS_DATA()->histograms[histogram##_FIRST_SLOT + (index)], \
+      1))
+#else /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */
+#define GRPC_STATS_INC_COUNTER(ctr)
+#define GRPC_STATS_INC_HISTOGRAM(histogram, index)
+#endif /* defined(GRPC_COLLECT_STATS) || !defined(NDEBUG) */
+
+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(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);
+
+#endif