89 lines
3.0 KiB
C++
89 lines
3.0 KiB
C++
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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==============================================================================*/
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#ifndef TENSORFLOW_LITE_PROFILING_MEMORY_INFO_H_
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#define TENSORFLOW_LITE_PROFILING_MEMORY_INFO_H_
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#include <cstdint>
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#include <sstream>
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namespace tflite {
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namespace profiling {
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namespace memory {
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struct MemoryUsage {
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static const int kValueNotSet;
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// Indicates whether obtaining memory usage is supported on the platform, thus
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// indicating whether the values defined in this struct make sense or not.
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static bool IsSupported();
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MemoryUsage()
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: max_rss_kb(kValueNotSet),
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total_allocated_bytes(kValueNotSet),
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in_use_allocated_bytes(kValueNotSet) {}
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// The maximum memory size (in kilobytes) occupied by an OS process that is
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// held in main memory (RAM). Such memory usage information is generally
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// referred as resident set size (rss). This is an alias to rusage::ru_maxrss.
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int64_t max_rss_kb;
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// Total non-mmapped space allocated from system in bytes. This is an alias to
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// mallinfo::arena.
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int total_allocated_bytes;
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// Total allocated (including mmapped) bytes that's in use (i.e. excluding
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// those are freed). This is an alias to mallinfo::uordblks.
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int in_use_allocated_bytes;
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MemoryUsage operator+(MemoryUsage const& obj) const {
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MemoryUsage res;
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res.max_rss_kb = max_rss_kb + obj.max_rss_kb;
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res.total_allocated_bytes =
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total_allocated_bytes + obj.total_allocated_bytes;
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res.in_use_allocated_bytes =
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in_use_allocated_bytes + obj.in_use_allocated_bytes;
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return res;
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}
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MemoryUsage operator-(MemoryUsage const& obj) const {
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MemoryUsage res;
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res.max_rss_kb = max_rss_kb - obj.max_rss_kb;
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res.total_allocated_bytes =
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total_allocated_bytes - obj.total_allocated_bytes;
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res.in_use_allocated_bytes =
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in_use_allocated_bytes - obj.in_use_allocated_bytes;
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return res;
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}
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void AllStatsToStream(std::ostream* stream) const;
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friend std::ostream& operator<<(std::ostream& stream,
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const MemoryUsage& obj) {
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obj.AllStatsToStream(&stream);
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return stream;
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}
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};
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// Return the memory usage from the system.
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// Note: this currently only works on Linux-based systems. Support on other
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// systems will be added later.
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MemoryUsage GetMemoryUsage();
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} // namespace memory
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} // namespace profiling
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} // namespace tflite
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#endif // TENSORFLOW_LITE_PROFILING_MEMORY_INFO_H_
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