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version_generator.cc
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version_generator.cc
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/*
*
* Modified by ScyllaDB
* Copyright (C) 2015-present ScyllaDB
*/
/*
* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
*/
#include <seastar/util/modules.hh>
#include <seastar/core/shard_id.hh>
#include <seastar/core/on_internal_error.hh>
#include <seastar/core/print.hh>
#include "log.hh"
#include "seastarx.hh"
#include "version_generator.hh"
namespace gms {
namespace version_generator {
// In the original Cassandra code, version was an AtomicInteger.
// For us, we run the gossiper on a single CPU, and don't need to use atomics.
static version_type version;
static logging::logger logger("version_generator");
version_type get_next_version() noexcept
{
if (this_shard_id() != 0) [[unlikely]] {
on_fatal_internal_error(logger, format(
"{} can only be called on shard 0, but it was called on shard {}",
__FUNCTION__, this_shard_id()));
}
return ++version;
}
} // namespace version_generator
} // namespace gms