9ec6997dfb
Since the struct lifetime is bound to the wrapped pointer this is fine. PiperOrigin-RevId: 308941521 Change-Id: I0604fff4fcba6a03cc4a2242ab9f182fbfbf8bae
69 lines
2.5 KiB
C++
69 lines
2.5 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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#include "tensorflow/python/eager/pywrap_tensor_conversion.h"
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#include "absl/container/flat_hash_map.h"
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#include "absl/hash/hash.h"
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#include "tensorflow/c/eager/tfe_tensorhandle_internal.h"
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#include "tensorflow/core/lib/monitoring/counter.h"
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#include "tensorflow/core/platform/logging.h"
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namespace tensorflow {
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auto* scalar_cache_hits = tensorflow::monitoring::Counter<0>::New(
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"/tensorflow/eager/python/scalar_cache_hits",
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"Number of times a scalar TFE_TensorHandle was retrieved from cache");
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auto* scalar_cache_misses = tensorflow::monitoring::Counter<0>::New(
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"/tensorflow/eager/python/scalar_cache_misses",
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"Number of times a scalar TFE_TensorHandle was not available in cache");
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TFE_TensorHandleCache* TFE_TensorHandleCache::Get() {
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// TODO(slebedev): link with Context (in context.py) instead of having
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// a static global?
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static auto* cache = new TFE_TensorHandleCache();
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return cache;
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}
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TFE_TensorHandle* TFE_TensorHandleCache::Lookup(
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PyObject* value, tensorflow::DataType dtype,
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absl::string_view device_name) const {
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CHECK_NOTNULL(value);
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const auto it = cache.find(Key{PyObjectPtr{value}, dtype, device_name});
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if (it == cache.end()) {
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scalar_cache_misses->GetCell()->IncrementBy(1);
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return nullptr;
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}
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scalar_cache_hits->GetCell()->IncrementBy(1);
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auto* h = it->second;
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return tensorflow::wrap(tensorflow::unwrap(h)->Copy());
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}
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void TFE_TensorHandleCache::Insert(PyObject* value, tensorflow::DataType dtype,
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absl::string_view device_name,
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TFE_TensorHandle* h) {
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Py_INCREF(value);
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cache.emplace(Key{PyObjectPtr{value}, dtype, device_name},
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tensorflow::wrap(tensorflow::unwrap(h)->Copy()));
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}
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void TFE_TensorHandleCache::Clear() {
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DecrefUnrefAll();
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cache.clear();
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}
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} // namespace tensorflow
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