/usr/include/spdlog/details/registry.h is in libspdlog-dev 1.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* spdlog - an extremely fast and easy to use c++11 logging library. */
/* Copyright (c) 2014 Gabi Melman. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#pragma once
// Loggers registy of unique name->logger pointer
// An attempt to create a logger with an alreasy existing name will be ignored
// If user requests a non existing logger, nullptr will be returned
// This class is thread safe
#include <string>
#include <mutex>
#include <unordered_map>
#include <functional>
#include "./null_mutex.h"
#include "../logger.h"
#include "../async_logger.h"
#include "../common.h"
namespace spdlog
{
namespace details
{
template <class Mutex> class registry_t
{
public:
void register_logger(std::shared_ptr<logger> logger)
{
std::lock_guard<Mutex> lock(_mutex);
register_logger_impl(logger);
}
std::shared_ptr<logger> get(const std::string& logger_name)
{
std::lock_guard<Mutex> lock(_mutex);
auto found = _loggers.find(logger_name);
return found == _loggers.end() ? nullptr : found->second;
}
template<class It>
std::shared_ptr<logger> create(const std::string& logger_name, const It& sinks_begin, const It& sinks_end)
{
std::shared_ptr<logger> new_logger;
std::lock_guard<Mutex> lock(_mutex);
if (_async_mode)
new_logger = std::make_shared<async_logger>(logger_name, sinks_begin, sinks_end, _async_q_size, _overflow_policy, _worker_warmup_cb, _flush_interval_ms);
else
new_logger = std::make_shared<logger>(logger_name, sinks_begin, sinks_end);
if (_formatter)
new_logger->set_formatter(_formatter);
new_logger->set_level(_level);
register_logger_impl(new_logger);
return new_logger;
}
void drop(const std::string& logger_name)
{
std::lock_guard<Mutex> lock(_mutex);
_loggers.erase(logger_name);
}
void drop_all()
{
std::lock_guard<Mutex> lock(_mutex);
_loggers.clear();
}
std::shared_ptr<logger> create(const std::string& logger_name, sinks_init_list sinks)
{
return create(logger_name, sinks.begin(), sinks.end());
}
std::shared_ptr<logger> create(const std::string& logger_name, sink_ptr sink)
{
return create(logger_name, { sink });
}
void formatter(formatter_ptr f)
{
std::lock_guard<Mutex> lock(_mutex);
_formatter = f;
for (auto& l : _loggers)
l.second->set_formatter(_formatter);
}
void set_pattern(const std::string& pattern)
{
std::lock_guard<Mutex> lock(_mutex);
_formatter = std::make_shared<pattern_formatter>(pattern);
for (auto& l : _loggers)
l.second->set_formatter(_formatter);
}
void set_level(level::level_enum log_level)
{
std::lock_guard<Mutex> lock(_mutex);
for (auto& l : _loggers)
l.second->set_level(log_level);
_level = log_level;
}
void set_async_mode(size_t q_size, const async_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb, const std::chrono::milliseconds& flush_interval_ms)
{
std::lock_guard<Mutex> lock(_mutex);
_async_mode = true;
_async_q_size = q_size;
_overflow_policy = overflow_policy;
_worker_warmup_cb = worker_warmup_cb;
_flush_interval_ms = flush_interval_ms;
}
void set_sync_mode()
{
std::lock_guard<Mutex> lock(_mutex);
_async_mode = false;
}
static registry_t<Mutex>& instance()
{
static registry_t<Mutex> s_instance;
return s_instance;
}
private:
void register_logger_impl(std::shared_ptr<logger> logger)
{
auto logger_name = logger->name();
if (_loggers.find(logger_name) != std::end(_loggers))
throw spdlog_ex("logger with name " + logger_name + " already exists");
_loggers[logger->name()] = logger;
}
registry_t<Mutex>(){}
registry_t<Mutex>(const registry_t<Mutex>&) = delete;
registry_t<Mutex>& operator=(const registry_t<Mutex>&) = delete;
Mutex _mutex;
std::unordered_map <std::string, std::shared_ptr<logger>> _loggers;
formatter_ptr _formatter;
level::level_enum _level = level::info;
bool _async_mode = false;
size_t _async_q_size = 0;
async_overflow_policy _overflow_policy = async_overflow_policy::block_retry;
std::function<void()> _worker_warmup_cb = nullptr;
std::chrono::milliseconds _flush_interval_ms;
};
#ifdef SPDLOG_NO_REGISTRY_MUTEX
typedef registry_t<spdlog::details::null_mutex> registry;
#else
typedef registry_t<std::mutex> registry;
#endif
}
}
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