wehub-resource-sync
96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
/* Copyright (c) 2016 PaddlePaddle 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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#include "paddle/fluid/framework/lod_tensor.h"
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#include <cstdint>
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#include "paddle/fluid/framework/convert_utils.h"
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#include "paddle/fluid/framework/version.h"
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namespace paddle::framework {
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std::string LegacyLoDToString(const LegacyLoD &lod) {
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std::ostringstream stream;
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stream << lod;
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return stream.str();
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}
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bool operator==(const LegacyLoD &a, const LegacyLoD &b) {
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if (a.size() != b.size()) {
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return false;
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}
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for (size_t i = 0; i < a.size(); i++) {
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const auto &a_level = a[i];
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const auto &b_level = b[i];
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if (a_level.size() != b_level.size()) {
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return false;
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}
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for (size_t j = 0; j < a_level.size(); j++) {
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if (a_level[j] != b_level[j]) {
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return false;
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}
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}
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}
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return true;
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}
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bool CheckLegacyLoD(const LegacyLoD &in, int tensor_height) {
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if (in.empty()) return true;
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for (const auto &level : in) {
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// check: there should be more than 2 offsets existing in each level.
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if (level.size() < 2) return false;
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// check: the first offset(the begin offset) of each level should be 0.
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if (level.front() != 0) return false;
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// check: all the offsets in a level should be non-descending
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if (!std::is_sorted(level.begin(), level.end())) {
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return false;
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}
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}
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// check: the lowest level's last offset should equals `tensor_height` if
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// tensor_height>0.
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if (tensor_height > 0 &&
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static_cast<size_t>(tensor_height) != in.back().back())
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return false;
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// check: the higher level's last offset should equals the lower level's
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// size-1.
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// NOTE LegacyLoD store the levels from top to bottom, so the higher level
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// goes first.
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for (size_t level = 0; level < in.size() - 1; level++) {
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if (in[level].back() != in[level + 1].size() - 1) return false;
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}
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return true;
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}
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LegacyLoD ConvertToOffsetBasedLegacyLoD(const LegacyLoD &length_lod) {
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LegacyLoD offset_lod;
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offset_lod.reserve(length_lod.size());
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for (const auto &item : length_lod) {
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std::vector<size_t> level;
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level.reserve(item.size() + 1);
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size_t tmp = 0;
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level.push_back(tmp);
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for (auto i : item) {
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tmp += i;
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level.push_back(tmp);
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}
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offset_lod.push_back(level);
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}
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return offset_lod;
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}
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} // namespace paddle::framework
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