Files
scylla/tracing/tracing_backend_registry.cc
Ivan Prisyazhnyy 0836efd830 tracing: test/boost/tracing: fix use after free
fixes AddressSanitizer: stack-buffer-underflow on address 0x7ffd9a375820 at pc 0x555ac9721b4e bp 0x7ffd9a374e70 sp 0x7ffd9a374620

Backend registry holds a unique pointer to the backend implementation
that must outlive the whole tracing lifetime until the shutdown call.

So it must be catched/moved before the program exits its scope by
passing out the lambda chain.

Regarding deletion of the default destructor: moving object requires
a move constructor (for do_with) that is not implicitly provided if
there is a user-defined object destructor defined even tho its impl
is default.

Signed-off-by: Ivan Prisyazhnyy <ivan@scylladb.com>

Closes #8461
2021-04-12 16:44:07 +03:00

50 lines
1.5 KiB
C++

/*
* Copyright 2018 ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#include "tracing_backend_registry.hh"
#include "tracing/tracing.hh"
#include "utils/class_registrator.hh"
namespace tracing {
no_such_tracing_backend::no_such_tracing_backend() : std::runtime_error("no such tracing backend") {
}
backend_registry::backend_registry()
: _impl(std::make_unique<nonstatic_class_registry<i_tracing_backend_helper, tracing&>>()) {
}
void
backend_registry::register_backend_creator(sstring name, std::function<std::unique_ptr<i_tracing_backend_helper> (tracing&)> creator) {
_impl->register_class(std::move(name), std::move(creator));
}
std::unique_ptr<i_tracing_backend_helper>
backend_registry::create_backend(const sstring& name, tracing& t) const {
try {
return _impl->create(name, t);
} catch (no_such_class&) {
throw no_such_tracing_backend();
}
}
}