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98 lines
2.5 KiB
98 lines
2.5 KiB
// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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//
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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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#pragma once
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#include "glog/logging.h"
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#include "paddle/fluid/platform/enforce.h"
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namespace paddle {
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namespace framework {
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namespace details {
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class ExceptionHolder {
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public:
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void Catch(std::exception_ptr eptr) {
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try {
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std::rethrow_exception(eptr);
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} catch (platform::EOFException exp) {
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Catch(exp);
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} catch (platform::EnforceNotMet exp) {
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Catch(exp);
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} catch (std::exception& ex) {
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LOG(FATAL) << "std::exception caught, " << ex.what();
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} catch (...) {
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LOG(FATAL) << "Unknown exception caught";
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}
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}
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bool IsCaught() const {
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std::lock_guard<std::mutex> lock(mu_);
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return exception_.get() != nullptr;
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}
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void ReThrow() {
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std::lock_guard<std::mutex> lock(mu_);
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switch (type_) {
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case kNone:
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break;
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case kEnforceNotMet: {
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auto e = *static_cast<platform::EnforceNotMet*>(exception_.get());
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throw e;
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}
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case kEOF: {
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auto e = *static_cast<platform::EOFException*>(exception_.get());
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throw e;
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}
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}
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ClearImpl();
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}
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void Clear() {
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std::lock_guard<std::mutex> lock(mu_);
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ClearImpl();
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}
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private:
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void ClearImpl() {
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exception_.reset();
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type_ = kNone;
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}
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void Catch(const platform::EnforceNotMet& exp) {
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std::lock_guard<std::mutex> lock(mu_);
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exception_.reset(new platform::EnforceNotMet(exp));
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type_ = kEnforceNotMet;
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}
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void Catch(const platform::EOFException& exp) {
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std::lock_guard<std::mutex> lock(mu_);
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// EOFException will not cover up existing EnforceNotMet.
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if (exception_.get() == nullptr) {
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exception_.reset(new platform::EOFException(exp));
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type_ = kEOF;
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}
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}
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enum ExceptionType { kNone, kEnforceNotMet, kEOF };
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ExceptionType type_{kNone};
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std::unique_ptr<std::exception> exception_;
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mutable std::mutex mu_;
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};
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} // namespace details
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} // namespace framework
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} // namespace paddle
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