1 /* Copyright 2017 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #include "tensorflow/compiler/xla/service/cpu/external_constant_pool.h" 17 18 #include <algorithm> 19 #include <cstdlib> 20 #include <cstring> 21 22 #include "tensorflow/compiler/xla/map_util.h" 23 #include "tensorflow/compiler/xla/ptr_util.h" 24 #include "tensorflow/compiler/xla/shape_util.h" 25 #include "tensorflow/core/lib/gtl/flatset.h" 26 27 namespace xla { 28 namespace cpu { 29 void ExternalConstantPool::Insert(string name, const Literal& literal, 30 int64 alignment) { 31 CHECK(!ShapeUtil::IsTuple(literal.shape())); 32 CHECK(alignment > 0 && IsPowerOfTwo(static_cast<uint64>(alignment))); 33 CHECK(entries_.find(name) == entries_.end()); 34 35 int64 literal_size = ShapeUtil::ByteSizeOf(literal.shape()); 36 void* raw_pointer = tensorflow::port::AlignedMalloc( 37 literal_size, std::max<size_t>(alignment, sizeof(void*))); 38 CHECK(raw_pointer != nullptr) << "failed to allocate " << literal_size 39 << " bytes with alignment of " << alignment; 40 41 std::memcpy(raw_pointer, literal.untyped_data(), literal_size); 42 entries_.emplace(std::move(name), static_cast<uint8*>(raw_pointer)); 43 } 44 45 const uint8* ExternalConstantPool::Find(const string& name) { 46 auto it = entries_.find(name); 47 return it == entries_.end() ? nullptr : it->second.get(); 48 } 49 } // namespace cpu 50 } // namespace xla 51
