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discard policies on queue overflow

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This commit is contained in:
Denis Ivaykin 2015-01-14 15:35:01 -06:00
parent 0f3f65e07c
commit 365d895482
6 changed files with 31 additions and 19 deletions
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7
include/spdlog/async_logger.h
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@ -38,6 +38,7 @@
#include <functional>
#include "common.h"
#include "logger.h"
#include "spdlog.h"
namespace spdlog
@ -52,9 +53,9 @@ class async_logger :public logger
{
public:
template<class It>
async_logger(const std::string& name, const It& begin, const It& end, size_t queue_size, const std::function<void()>& worker_warmup_cb = nullptr);
async_logger(const std::string& logger_name, sinks_init_list sinks, size_t queue_size, const std::function<void()>& worker_warmup_cb = nullptr);
async_logger(const std::string& logger_name, sink_ptr single_sink, size_t queue_size, const std::function<void()>& worker_warmup_cb = nullptr);
async_logger(const std::string& name, const It& begin, const It& end, size_t queue_size, const async_queue_overflow_policy overflow_policy = async_queue_overflow_policy::block_retry, const std::function<void()>& worker_warmup_cb = nullptr);
async_logger(const std::string& logger_name, sinks_init_list sinks, size_t queue_size, const async_queue_overflow_policy overflow_policy = async_queue_overflow_policy::block_retry, const std::function<void()>& worker_warmup_cb = nullptr);
async_logger(const std::string& logger_name, sink_ptr single_sink, size_t queue_size, const async_queue_overflow_policy overflow_policy = async_queue_overflow_policy::block_retry, const std::function<void()>& worker_warmup_cb = nullptr);
protected:

10
include/spdlog/details/async_log_helper.h
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@ -109,7 +109,7 @@ public:
using clock = std::chrono::steady_clock;
async_log_helper(formatter_ptr formatter, const std::vector<sink_ptr>& sinks, size_t queue_size, const std::function<void()>& worker_warmup_cb = nullptr);
async_log_helper(formatter_ptr formatter, const std::vector<sink_ptr>& sinks, size_t queue_size, const async_queue_overflow_policy overflow_policy = async_queue_overflow_policy::block_retry, const std::function<void()>& worker_warmup_cb = nullptr);
void log(const details::log_msg& msg);
//Stop logging and join the back thread
@ -125,6 +125,9 @@ private:
// last exception thrown from the worker thread
std::shared_ptr<spdlog_ex> _last_workerthread_ex;
// overflow policy
const async_queue_overflow_policy _overflow_policy;
// worker thread warmup callback - one can set thread priority, affinity, etc
const std::function<void()> _worker_warmup_cb;
@ -150,10 +153,11 @@ private:
///////////////////////////////////////////////////////////////////////////////
// async_sink class implementation
///////////////////////////////////////////////////////////////////////////////
inline spdlog::details::async_log_helper::async_log_helper(formatter_ptr formatter, const std::vector<sink_ptr>& sinks, size_t queue_size, const std::function<void()>& worker_warmup_cb):
inline spdlog::details::async_log_helper::async_log_helper(formatter_ptr formatter, const std::vector<sink_ptr>& sinks, size_t queue_size, const async_queue_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb):
_formatter(formatter),
_sinks(sinks),
_q(queue_size),
_overflow_policy(overflow_policy),
_worker_warmup_cb(worker_warmup_cb),
_worker_thread(&async_log_helper::worker_loop, this)
{}
@ -178,7 +182,7 @@ inline void spdlog::details::async_log_helper::log(const details::log_msg& msg)
{
throw_if_bad_worker();
async_msg new_msg(msg);
if (!_q.enqueue(std::move(new_msg)))
if (!_q.enqueue(std::move(new_msg)) && _overflow_policy != async_queue_overflow_policy::discard_log_msg)
{
auto last_op_time = clock::now();
do

12
include/spdlog/details/async_logger_impl.h
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@ -34,17 +34,17 @@
template<class It>
inline spdlog::async_logger::async_logger(const std::string& logger_name, const It& begin, const It& end, size_t queue_size, const std::function<void()>& worker_warmup_cb) :
inline spdlog::async_logger::async_logger(const std::string& logger_name, const It& begin, const It& end, size_t queue_size, const async_queue_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb) :
logger(logger_name, begin, end),
_async_log_helper(new details::async_log_helper(_formatter, _sinks, queue_size, worker_warmup_cb))
_async_log_helper(new details::async_log_helper(_formatter, _sinks, queue_size, overflow_policy, worker_warmup_cb))
{
}
inline spdlog::async_logger::async_logger(const std::string& logger_name, sinks_init_list sinks, size_t queue_size, const std::function<void()>& worker_warmup_cb) :
async_logger(logger_name, sinks.begin(), sinks.end(), queue_size, worker_warmup_cb) {}
inline spdlog::async_logger::async_logger(const std::string& logger_name, sinks_init_list sinks, size_t queue_size, const async_queue_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb) :
async_logger(logger_name, sinks.begin(), sinks.end(), queue_size, overflow_policy, worker_warmup_cb) {}
inline spdlog::async_logger::async_logger(const std::string& logger_name, sink_ptr single_sink, size_t queue_size, const std::function<void()>& worker_warmup_cb) :
async_logger(logger_name, { single_sink }, queue_size, worker_warmup_cb) {}
inline spdlog::async_logger::async_logger(const std::string& logger_name, sink_ptr single_sink, size_t queue_size, const async_queue_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb) :
async_logger(logger_name, { single_sink }, queue_size, overflow_policy, worker_warmup_cb) {}
inline void spdlog::async_logger::_set_formatter(spdlog::formatter_ptr msg_formatter)

10
include/spdlog/details/registry.h
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@ -62,7 +62,7 @@ public:
return found->second;
std::shared_ptr<logger> new_logger;
if (_async_mode)
new_logger = std::make_shared<async_logger>(logger_name, sinks_begin, sinks_end, _async_q_size, _worker_warmup_cb);
new_logger = std::make_shared<async_logger>(logger_name, sinks_begin, sinks_end, _async_q_size, _overflow_policy, _worker_warmup_cb);
else
new_logger = std::make_shared<logger>(logger_name, sinks_begin, sinks_end);
@ -120,12 +120,13 @@ public:
l.second->set_level(log_level);
}
void set_async_mode(size_t q_size, const std::function<void()>& worker_warmup_cb = nullptr)
void set_async_mode(size_t q_size, const async_queue_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb)
{
std::lock_guard<std::mutex> lock(_mutex);
_async_mode = true;
_async_q_size = q_size;
_worker_warmup_cb = worker_warmup_cb;
_overflow_policy = overflow_policy;
_worker_warmup_cb = worker_warmup_cb;
}
void set_sync_mode()
@ -151,7 +152,8 @@ private:
level::level_enum _level = level::info;
bool _async_mode = false;
size_t _async_q_size = 0;
std::function<void()> _worker_warmup_cb = nullptr;
async_queue_overflow_policy _overflow_policy = async_queue_overflow_policy::block_retry;
std::function<void()> _worker_warmup_cb = nullptr;
};
}
}

4
include/spdlog/details/spdlog_impl.h
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@ -132,9 +132,9 @@ inline void spdlog::set_level(level::level_enum log_level)
}
inline void spdlog::set_async_mode(size_t queue_size, const std::function<void()>& worker_warmup_cb)
inline void spdlog::set_async_mode(size_t queue_size, const async_queue_overflow_policy overflow_policy, const std::function<void()>& worker_warmup_cb)
{
details::registry::instance().set_async_mode(queue_size, worker_warmup_cb);
details::registry::instance().set_async_mode(queue_size, overflow_policy, worker_warmup_cb);
}
inline void spdlog::set_sync_mode()

7
include/spdlog/spdlog.h
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@ -61,9 +61,14 @@ void set_level(level::level_enum log_level);
// Async mode - off by default.
//
enum class async_queue_overflow_policy {
block_retry, // Block / yield / sleep until message can be enqueued
discard_log_msg // Discard the message it enqueue fails
};
// Turn on async mode and set the queue size for each async_logger
void set_async_mode(size_t queue_size, const std::function<void()>& worker_warmup_cb = nullptr);
void set_async_mode(size_t queue_size, const async_queue_overflow_policy overflow_policy = async_queue_overflow_policy::block_retry, const std::function<void()>& worker_warmup_cb = nullptr);
// Turn off async mode
void set_sync_mode();