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PiperOrigin-RevId: 253489161

mediapipe/framework/counter_factory.cc

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+// Copyright 2019 The MediaPipe 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 "mediapipe/framework/counter_factory.h"
+
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "absl/synchronization/mutex.h"
+
+namespace mediapipe {
+namespace {
+
+// Counter implementation when we're not using Flume.
+// TODO: Consider using Dax atomic counters instead of this.
+// This class is thread safe.
+class BasicCounter : public Counter {
+ public:
+  explicit BasicCounter(const std::string& name) : value_(0) {}
+
+  void Increment() LOCKS_EXCLUDED(mu_) override {
+    absl::WriterMutexLock lock(&mu_);
+    ++value_;
+  }
+
+  void IncrementBy(int amount) LOCKS_EXCLUDED(mu_) override {
+    absl::WriterMutexLock lock(&mu_);
+    value_ += amount;
+  }
+
+  int64 Get() LOCKS_EXCLUDED(mu_) override {
+    absl::ReaderMutexLock lock(&mu_);
+    return value_;
+  }
+
+ private:
+  absl::Mutex mu_;
+  int64 value_ GUARDED_BY(mu_);
+};
+
+}  // namespace
+
+CounterSet::CounterSet() {}
+
+CounterSet::~CounterSet() LOCKS_EXCLUDED(mu_) { PublishCounters(); }
+
+void CounterSet::PublishCounters() LOCKS_EXCLUDED(mu_) {}
+
+void CounterSet::PrintCounters() LOCKS_EXCLUDED(mu_) {
+  absl::ReaderMutexLock lock(&mu_);
+  LOG_IF(INFO, !counters_.empty()) << "MediaPipe Counters:";
+  for (const auto& counter : counters_) {
+    LOG(INFO) << counter.first << ": " << counter.second->Get();
+  }
+}
+
+Counter* CounterSet::Get(const std::string& name) LOCKS_EXCLUDED(mu_) {
+  absl::ReaderMutexLock lock(&mu_);
+  if (!::mediapipe::ContainsKey(counters_, name)) {
+    return nullptr;
+  }
+  return counters_[name].get();
+}
+
+Counter* BasicCounterFactory::GetCounter(const std::string& name) {
+  return counter_set_.Emplace<BasicCounter>(name, name);
+}
+
+}  // namespace mediapipe