75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
|
// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
|
||
|
|
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
// Fast asynchronous logger.
|
||
|
|
// Uses pre allocated queue.
|
||
|
|
// Creates a single back thread to pop messages from the queue and log them.
|
||
|
|
//
|
||
|
|
// Upon each log write the logger:
|
||
|
|
// 1. Checks if its log level is enough to log the message
|
||
|
|
// 2. Push a new copy of the message to a queue (or block the caller until
|
||
|
|
// space is available in the queue)
|
||
|
|
// Upon destruction, logs all remaining messages in the queue before
|
||
|
|
// destructing..
|
||
|
|
|
||
|
|
#include <spdlog/logger.h>
|
||
|
|
|
||
|
|
namespace spdlog {
|
||
|
|
|
||
|
|
// Async overflow policy - block by default.
|
||
|
|
enum class async_overflow_policy {
|
||
|
|
block, // Block until message can be enqueued
|
||
|
|
overrun_oldest, // Discard oldest message in the queue if full when trying to
|
||
|
|
// add new item.
|
||
|
|
discard_new // Discard new message if the queue is full when trying to add new item.
|
||
|
|
};
|
||
|
|
|
||
|
|
namespace details {
|
||
|
|
class thread_pool;
|
||
|
|
}
|
||
|
|
|
||
|
|
class SPDLOG_API async_logger final : public std::enable_shared_from_this<async_logger>,
|
||
|
|
public logger {
|
||
|
|
friend class details::thread_pool;
|
||
|
|
|
||
|
|
public:
|
||
|
|
template <typename It>
|
||
|
|
async_logger(std::string logger_name,
|
||
|
|
It begin,
|
||
|
|
It end,
|
||
|
|
std::weak_ptr<details::thread_pool> tp,
|
||
|
|
async_overflow_policy overflow_policy = async_overflow_policy::block)
|
||
|
|
: logger(std::move(logger_name), begin, end),
|
||
|
|
thread_pool_(std::move(tp)),
|
||
|
|
overflow_policy_(overflow_policy) {}
|
||
|
|
|
||
|
|
async_logger(std::string logger_name,
|
||
|
|
sinks_init_list sinks_list,
|
||
|
|
std::weak_ptr<details::thread_pool> tp,
|
||
|
|
async_overflow_policy overflow_policy = async_overflow_policy::block);
|
||
|
|
|
||
|
|
async_logger(std::string logger_name,
|
||
|
|
sink_ptr single_sink,
|
||
|
|
std::weak_ptr<details::thread_pool> tp,
|
||
|
|
async_overflow_policy overflow_policy = async_overflow_policy::block);
|
||
|
|
|
||
|
|
std::shared_ptr<logger> clone(std::string new_name) override;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
void sink_it_(const details::log_msg &msg) override;
|
||
|
|
void flush_() override;
|
||
|
|
void backend_sink_it_(const details::log_msg &incoming_log_msg);
|
||
|
|
void backend_flush_();
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::weak_ptr<details::thread_pool> thread_pool_;
|
||
|
|
async_overflow_policy overflow_policy_;
|
||
|
|
};
|
||
|
|
} // namespace spdlog
|
||
|
|
|
||
|
|
#ifdef SPDLOG_HEADER_ONLY
|
||
|
|
#include "async_logger-inl.h"
|
||
|
|
#endif
|