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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2018 Red Hat Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_SUBSYS_TYPES_H
#define CEPH_SUBSYS_TYPES_H
#include <algorithm>
#include <array>
enum ceph_subsys_id_t {
ceph_subsys_, // default
#define SUBSYS(name, log, gather) \
ceph_subsys_##name,
#define DEFAULT_SUBSYS(log, gather)
#include "common/subsys.h"
#undef SUBSYS
#undef DEFAULT_SUBSYS
ceph_subsys_max
};
constexpr static std::size_t ceph_subsys_get_num() {
return static_cast<std::size_t>(ceph_subsys_max);
}
struct ceph_subsys_item_t {
const char* name;
uint8_t log_level;
uint8_t gather_level;
};
constexpr static std::array<ceph_subsys_item_t, ceph_subsys_get_num()>
ceph_subsys_get_as_array() {
#define SUBSYS(name, log, gather) \
ceph_subsys_item_t{ #name, log, gather },
#define DEFAULT_SUBSYS(log, gather) \
ceph_subsys_item_t{ "none", log, gather },
return {
#include "common/subsys.h"
};
#undef SUBSYS
#undef DEFAULT_SUBSYS
}
constexpr static std::uint8_t
ceph_subsys_get_max_default_level(const std::size_t subidx) {
const auto item = ceph_subsys_get_as_array()[subidx];
return std::max(item.log_level, item.gather_level);
}
// Compile time-capable version of std::strlen. Resorting to own
// implementation only because C++17 doesn't mandate constexpr
// on the standard one.
constexpr static std::size_t strlen_ct(const char* const s) {
std::size_t l = 0;
while (s[l] != '\0') {
++l;
}
return l;
}
constexpr static std::size_t ceph_subsys_max_name_length() {
return std::max({
#define SUBSYS(name, log, gather) \
strlen_ct(#name),
#define DEFAULT_SUBSYS(log, gather) \
strlen_ct("none"),
#include "common/subsys.h"
#undef SUBSYS
#undef DEFAULT_SUBSYS
});
}
#endif // CEPH_SUBSYS_TYPES_H
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