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/data/users/hoss/faiss/FaissException.cpp
/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
// -*- c++ -*-
#include "FaissException.h"
#include <sstream>
namespace faiss {
FaissException::FaissException(const std::string& m)
: msg(m) {
}
FaissException::FaissException(const std::string& m,
const char* funcName,
const char* file,
int line) {
int size = snprintf(nullptr, 0, "Error in %s at %s:%d: %s",
funcName, file, line, m.c_str());
msg.resize(size + 1);
snprintf(&msg[0], msg.size(), "Error in %s at %s:%d: %s",
funcName, file, line, m.c_str());
}
const char*
FaissException::what() const noexcept {
return msg.c_str();
}
void handleExceptions(
std::vector<std::pair<int, std::exception_ptr>>& exceptions) {
if (exceptions.size() == 1) {
// throw the single received exception directly
std::rethrow_exception(exceptions.front().second);
} else if (exceptions.size() > 1) {
// multiple exceptions; aggregate them and return a single exception
std::stringstream ss;
for (auto& p : exceptions) {
try {
std::rethrow_exception(p.second);
} catch (std::exception& ex) {
if (ex.what()) {
// exception message available
ss << "Exception thrown from index " << p.first << ": "
<< ex.what() << "\n";
} else {
// No message available
ss << "Unknown exception thrown from index " << p.first << "\n";
}
} catch (...) {
ss << "Unknown exception thrown from index " << p.first << "\n";
}
}
throw FaissException(ss.str());
}
}
}
faiss::handleExceptions
void handleExceptions(std::vector< std::pair< int, std::exception_ptr >> &exceptions)
Definition: FaissException.cpp:35
faiss::FaissException::what
const char * what() const noexceptoverride
from std::exception
Definition: FaissException.cpp:31
faiss::FaissException
Base class for Faiss exceptions.
Definition: FaissException.h:21