mirror of
https://github.com/facebookresearch/faiss.git
synced 2025-06-03 21:54:02 +08:00
a8118acbc5
Changelog: - changed license: BSD+Patents -> MIT - propagates exceptions raised in sub-indexes of IndexShards and IndexReplicas - support for searching several inverted lists in parallel (parallel_mode != 0) - better support for PQ codes where nbit != 8 or 16 - IVFSpectralHash implementation: spectral hash codes inside an IVF - 6-bit per component scalar quantizer (4 and 8 bit were already supported) - combinations of inverted lists: HStackInvertedLists and VStackInvertedLists - configurable number of threads for OnDiskInvertedLists prefetching (including 0=no prefetch) - more test and demo code compatible with Python 3 (print with parentheses) - refactored benchmark code: data loading is now in a single file
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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// -*- c++ -*-
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#include "FaissException.h"
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#include <sstream>
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namespace faiss {
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FaissException::FaissException(const std::string& m)
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: msg(m) {
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}
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FaissException::FaissException(const std::string& m,
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const char* funcName,
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const char* file,
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int line) {
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int size = snprintf(nullptr, 0, "Error in %s at %s:%d: %s",
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funcName, file, line, m.c_str());
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msg.resize(size + 1);
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snprintf(&msg[0], msg.size(), "Error in %s at %s:%d: %s",
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funcName, file, line, m.c_str());
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}
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const char*
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FaissException::what() const noexcept {
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return msg.c_str();
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}
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void handleExceptions(
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std::vector<std::pair<int, std::exception_ptr>>& exceptions) {
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if (exceptions.size() == 1) {
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// throw the single received exception directly
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std::rethrow_exception(exceptions.front().second);
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} else if (exceptions.size() > 1) {
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// multiple exceptions; aggregate them and return a single exception
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std::stringstream ss;
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for (auto& p : exceptions) {
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try {
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std::rethrow_exception(p.second);
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} catch (std::exception& ex) {
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if (ex.what()) {
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// exception message available
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ss << "Exception thrown from index " << p.first << ": "
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<< ex.what() << "\n";
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} else {
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// No message available
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ss << "Unknown exception thrown from index " << p.first << "\n";
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}
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} catch (...) {
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ss << "Unknown exception thrown from index " << p.first << "\n";
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}
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}
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throw FaissException(ss.str());
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}
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}
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}
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