4f381f6d07
* bump abseil to 20250814 * bump protobuf to v32.0 * cmake: add ccache auto support * backport flatzinc, math_opt and sat update
101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
// Copyright 2010-2025 Google LLC
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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 "ortools/math_opt/solvers/message_callback_data.h"
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#include <cstddef>
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#include <optional>
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#include <string>
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#include <utility>
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#include <vector>
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#include "absl/strings/str_cat.h"
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#include "absl/strings/string_view.h"
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namespace operations_research {
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namespace math_opt {
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std::vector<std::string> MessageCallbackData::Parse(
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const absl::string_view message) {
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std::vector<std::string> strings;
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// Iterate on all complete lines (lines ending with a '\n').
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absl::string_view remainder = message;
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for (std::size_t end = 0; end = remainder.find('\n'), end != remainder.npos;
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remainder = remainder.substr(end + 1)) {
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const auto line = remainder.substr(0, end);
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if (!unfinished_line_.empty()) {
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std::string new_message = std::move(unfinished_line_);
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unfinished_line_.clear();
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absl::StrAppend(&new_message, line);
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strings.push_back(std::move(new_message));
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} else {
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strings.emplace_back(line);
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}
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}
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// At the end of the loop, the remainder may contain the last unfinished line.
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// This could be the first line too if the entire message does not contain
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// '\n'.
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absl::StrAppend(&unfinished_line_, remainder);
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return strings;
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}
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std::vector<std::string> MessageCallbackData::Flush() {
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if (unfinished_line_.empty()) {
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return {};
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}
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std::vector<std::string> strings = {std::move(unfinished_line_)};
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unfinished_line_.clear();
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return strings;
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}
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BufferedMessageCallback::BufferedMessageCallback(
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SolverInterface::MessageCallback user_message_callback)
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: user_message_callback_(std::move(user_message_callback)) {}
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void BufferedMessageCallback::OnMessage(absl::string_view message) {
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if (!has_user_message_callback()) {
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return;
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}
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std::vector<std::string> messages;
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{
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absl::MutexLock lock(mutex_);
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messages = message_callback_data_.Parse(message);
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}
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// Do not hold lock during callback to user code.
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if (!messages.empty()) {
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user_message_callback_(messages);
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}
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}
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void BufferedMessageCallback::Flush() {
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if (!has_user_message_callback()) {
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return;
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}
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std::vector<std::string> messages;
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{
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absl::MutexLock lock(mutex_);
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messages = message_callback_data_.Flush();
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}
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// Do not hold lock during callback to user code.
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if (!messages.empty()) {
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user_message_callback_(messages);
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}
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}
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} // namespace math_opt
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} // namespace operations_research
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