98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
// Copyright 2019 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef MEDIAPIPE_FRAMEWORK_COUNTER_FACTORY_H_
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#define MEDIAPIPE_FRAMEWORK_COUNTER_FACTORY_H_
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#include <algorithm>
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#include <map>
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#include <memory>
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#include <string>
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#include "absl/base/thread_annotations.h"
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#include "absl/synchronization/mutex.h"
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#include "absl/time/time.h"
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#include "mediapipe/framework/counter.h"
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#include "mediapipe/framework/port.h"
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#include "mediapipe/framework/port/integral_types.h"
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#include "mediapipe/framework/port/map_util.h"
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namespace mediapipe {
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// Holds a map of counter names to counter unique_ptrs.
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// This class is thread safe.
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class CounterSet {
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public:
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CounterSet();
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// In builds with streamz export enabled, this will synchronously export
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// the final counter values.
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~CounterSet();
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// Prints the values of all the counters.
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// A call to PublishCounters will reset all counters.
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void PrintCounters();
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// Publishes the vales of all the counters for monitoring and resets
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// all internal counters.
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void PublishCounters();
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// Adds a counter of the given type by constructing the counter in place.
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// Returns a pointer to the new counter or if the counter already exists
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// to the existing pointer.
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template <typename CounterType, typename... Args>
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Counter* Emplace(const std::string& name, Args&&... args)
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ABSL_LOCKS_EXCLUDED(mu_) {
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absl::WriterMutexLock lock(&mu_);
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std::unique_ptr<Counter>* existing_counter = FindOrNull(counters_, name);
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if (existing_counter) {
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return existing_counter->get();
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}
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Counter* counter = new CounterType(std::forward<Args>(args)...);
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counters_[name].reset(counter);
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return counter;
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}
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// Retrieves the counter with the given name; return nullptr if it doesn't
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// exist.
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Counter* Get(const std::string& name);
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// Retrieves all counters names and current values from the internal map.
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std::map<std::string, int64> GetCountersValues() ABSL_LOCKS_EXCLUDED(mu_);
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private:
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absl::Mutex mu_;
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std::map<std::string, std::unique_ptr<Counter>> counters_
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ABSL_GUARDED_BY(mu_);
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};
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// Generic counter factory
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class CounterFactory {
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public:
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virtual ~CounterFactory() {}
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virtual Counter* GetCounter(const std::string& name) = 0;
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CounterSet* GetCounterSet() { return &counter_set_; }
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protected:
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CounterSet counter_set_;
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};
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// Counter factory that makes the counters be our own basic counters.
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class BasicCounterFactory : public CounterFactory {
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public:
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~BasicCounterFactory() override {}
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Counter* GetCounter(const std::string& name) override;
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};
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} // namespace mediapipe
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#endif // MEDIAPIPE_FRAMEWORK_COUNTER_FACTORY_H_
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