You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
|
|
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
|
|
|
|
#pragma once
|
|
|
|
//
|
|
// Async logging using global thread pool
|
|
// All loggers created here share same global thread pool.
|
|
// Each log message is pushed to a queue along with a shared pointer to the
|
|
// logger.
|
|
// If a logger deleted while having pending messages in the queue, it's actual
|
|
// destruction will defer
|
|
// until all its messages are processed by the thread pool.
|
|
// This is because each message in the queue holds a shared_ptr to the
|
|
// originating logger.
|
|
|
|
#include <spdlog/async_logger.h>
|
|
#include <spdlog/details/registry.h>
|
|
#include <spdlog/details/thread_pool.h>
|
|
|
|
#include <memory>
|
|
#include <mutex>
|
|
#include <functional>
|
|
|
|
namespace spdlog {
|
|
|
|
namespace details {
|
|
static const size_t default_async_q_size = 8192;
|
|
}
|
|
|
|
// async logger factory - creates async loggers backed with thread pool.
|
|
// if a global thread pool doesn't already exist, create it with default queue
|
|
// size of 8192 items and single thread.
|
|
template<async_overflow_policy OverflowPolicy = async_overflow_policy::block>
|
|
struct async_factory_impl
|
|
{
|
|
template<typename Sink, typename... SinkArgs>
|
|
static std::shared_ptr<async_logger> create(std::string logger_name, SinkArgs &&...args)
|
|
{
|
|
auto ®istry_inst = details::registry::instance();
|
|
|
|
// create global thread pool if not already exists..
|
|
|
|
auto &mutex = registry_inst.tp_mutex();
|
|
std::lock_guard<std::recursive_mutex> tp_lock(mutex);
|
|
auto tp = registry_inst.get_tp();
|
|
if (tp == nullptr)
|
|
{
|
|
tp = std::make_shared<details::thread_pool>(details::default_async_q_size, 1U);
|
|
registry_inst.set_tp(tp);
|
|
}
|
|
|
|
auto sink = std::make_shared<Sink>(std::forward<SinkArgs>(args)...);
|
|
auto new_logger = std::make_shared<async_logger>(std::move(logger_name), std::move(sink), std::move(tp), OverflowPolicy);
|
|
registry_inst.initialize_logger(new_logger);
|
|
return new_logger;
|
|
}
|
|
};
|
|
|
|
using async_factory = async_factory_impl<async_overflow_policy::block>;
|
|
using async_factory_nonblock = async_factory_impl<async_overflow_policy::overrun_oldest>;
|
|
|
|
template<typename Sink, typename... SinkArgs>
|
|
inline std::shared_ptr<spdlog::logger> create_async(std::string logger_name, SinkArgs &&...sink_args)
|
|
{
|
|
return async_factory::create<Sink>(std::move(logger_name), std::forward<SinkArgs>(sink_args)...);
|
|
}
|
|
|
|
template<typename Sink, typename... SinkArgs>
|
|
inline std::shared_ptr<spdlog::logger> create_async_nb(std::string logger_name, SinkArgs &&...sink_args)
|
|
{
|
|
return async_factory_nonblock::create<Sink>(std::move(logger_name), std::forward<SinkArgs>(sink_args)...);
|
|
}
|
|
|
|
// set global thread pool.
|
|
inline void init_thread_pool(
|
|
size_t q_size, size_t thread_count, std::function<void()> on_thread_start, std::function<void()> on_thread_stop)
|
|
{
|
|
auto tp = std::make_shared<details::thread_pool>(q_size, thread_count, on_thread_start, on_thread_stop);
|
|
details::registry::instance().set_tp(std::move(tp));
|
|
}
|
|
|
|
inline void init_thread_pool(size_t q_size, size_t thread_count, std::function<void()> on_thread_start)
|
|
{
|
|
init_thread_pool(q_size, thread_count, on_thread_start, [] {});
|
|
}
|
|
|
|
inline void init_thread_pool(size_t q_size, size_t thread_count)
|
|
{
|
|
init_thread_pool(
|
|
q_size, thread_count, [] {}, [] {});
|
|
}
|
|
|
|
// get the global thread pool.
|
|
inline std::shared_ptr<spdlog::details::thread_pool> thread_pool()
|
|
{
|
|
return details::registry::instance().get_tp();
|
|
}
|
|
} // namespace spdlog
|