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transfer_scope_cache.cc
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transfer_scope_cache.cc
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// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
//
// 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 "paddle/fluid/framework/transfer_scope_cache.h"
namespace paddle {
namespace framework {
std::unordered_map<size_t, Scope*>& global_transfer_data_cache() {
thread_local auto* x = new std::unordered_map<size_t, Scope*>;
return *x;
}
std::unordered_set<Scope*>& global_transfer_scope_cache() {
thread_local auto* x = new std::unordered_set<Scope*>;
return *x;
}
Scope* TryCreateTransferScope(OpKernelType type0, OpKernelType type1,
const Scope* scope) {
Scope* new_scope{nullptr};
size_t infer_cache_key =
CombineHash(OpKernelType::Hash()(type0), OpKernelType::Hash()(type1));
infer_cache_key =
CombineHash(infer_cache_key, std::hash<const Scope*>()(scope));
auto it = global_transfer_data_cache().find(infer_cache_key);
if (it != global_transfer_data_cache().end()) {
new_scope = global_transfer_data_cache()[infer_cache_key];
} else {
new_scope = &scope->NewScope();
global_transfer_data_cache()[infer_cache_key] = new_scope;
}
global_transfer_scope_cache().insert(new_scope);
return new_scope;
}
void RemoveKidsFromTransferScopeCache(Scope* scope) {
auto it = global_transfer_scope_cache().find(scope);
if (it != global_transfer_scope_cache().end()) {
global_transfer_scope_cache().erase(it);
}
for (auto* s : scope->kids()) {
auto it = global_transfer_scope_cache().find(s);
if (it != global_transfer_scope_cache().end()) {
global_transfer_scope_cache().erase(it);
}
}
// remove global transfer data cache
auto& cache = global_transfer_data_cache();
for (auto it = cache.begin(); it != cache.end();) {
if (it->second == scope)
it = cache.erase(it);
else
it++;
}
}
} // namespace framework
} // namespace paddle