Repo created

TMessagesProj/jni/voip/webrtc/base/profiler/sample_metadata.cc

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+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/profiler/sample_metadata.h"
+
+#include "base/metrics/metrics_hashes.h"
+#include "base/no_destructor.h"
+#include "base/profiler/stack_sampling_profiler.h"
+
+namespace base {
+
+ScopedSampleMetadata::ScopedSampleMetadata(StringPiece name, int64_t value)
+    : name_hash_(HashMetricName(name)) {
+  GetSampleMetadataRecorder()->Set(name_hash_, nullopt, value);
+}
+
+ScopedSampleMetadata::ScopedSampleMetadata(StringPiece name,
+                                           int64_t key,
+                                           int64_t value)
+    : name_hash_(HashMetricName(name)), key_(key) {
+  GetSampleMetadataRecorder()->Set(name_hash_, key, value);
+}
+
+ScopedSampleMetadata::~ScopedSampleMetadata() {
+  GetSampleMetadataRecorder()->Remove(name_hash_, key_);
+}
+
+void SetSampleMetadata(StringPiece name, int64_t value) {
+  GetSampleMetadataRecorder()->Set(HashMetricName(name), nullopt, value);
+}
+
+void SetSampleMetadata(StringPiece name, int64_t key, int64_t value) {
+  GetSampleMetadataRecorder()->Set(HashMetricName(name), key, value);
+}
+
+void RemoveSampleMetadata(StringPiece name) {
+  GetSampleMetadataRecorder()->Remove(HashMetricName(name), nullopt);
+}
+
+void RemoveSampleMetadata(StringPiece name, int64_t key) {
+  GetSampleMetadataRecorder()->Remove(HashMetricName(name), key);
+}
+
+// This function is friended by StackSamplingProfiler so must live directly in
+// the base namespace.
+void ApplyMetadataToPastSamplesImpl(TimeTicks period_start,
+                                    TimeTicks period_end,
+                                    int64_t name_hash,
+                                    Optional<int64_t> key,
+                                    int64_t value) {
+  StackSamplingProfiler::ApplyMetadataToPastSamples(period_start, period_end,
+                                                    name_hash, key, value);
+}
+
+void ApplyMetadataToPastSamples(TimeTicks period_start,
+                                TimeTicks period_end,
+                                StringPiece name,
+                                int64_t value) {
+  return ApplyMetadataToPastSamplesImpl(period_start, period_end,
+                                        HashMetricName(name), nullopt, value);
+}
+
+void ApplyMetadataToPastSamples(TimeTicks period_start,
+                                TimeTicks period_end,
+                                StringPiece name,
+                                int64_t key,
+                                int64_t value) {
+  return ApplyMetadataToPastSamplesImpl(period_start, period_end,
+                                        HashMetricName(name), key, value);
+}
+
+MetadataRecorder* GetSampleMetadataRecorder() {
+  static NoDestructor<MetadataRecorder> instance;
+  return instance.get();
+}
+
+}  // namespace base