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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 <functional>
#include "common.h" #include "common.h"
#include "logger.h" #include "logger.h"
#include "spdlog.h"
namespace spdlog namespace spdlog
@ -52,9 +53,9 @@ class async_logger :public logger
{ {
public: public:
template<class It> 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& 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 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 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: protected:

10
include/spdlog/details/async_log_helper.h
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@ -109,7 +109,7 @@ public:
using clock = std::chrono::steady_clock; 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); void log(const details::log_msg& msg);
//Stop logging and join the back thread //Stop logging and join the back thread
@ -126,6 +126,9 @@ private:
// last exception thrown from the worker thread // last exception thrown from the worker thread
std::shared_ptr<spdlog_ex> _last_workerthread_ex; 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 // worker thread warmup callback - one can set thread priority, affinity, etc
const std::function<void()> _worker_warmup_cb; const std::function<void()> _worker_warmup_cb;
@ -150,10 +153,11 @@ private:
/////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////
// async_sink class implementation // 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), _formatter(formatter),
_sinks(sinks), _sinks(sinks),
_q(queue_size), _q(queue_size),
_overflow_policy(overflow_policy),
_worker_warmup_cb(worker_warmup_cb), _worker_warmup_cb(worker_warmup_cb),
_worker_thread(&async_log_helper::worker_loop, this) _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(); throw_if_bad_worker();
async_msg new_msg(msg); 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(); auto last_op_time = clock::now();
do do

12
include/spdlog/details/async_logger_impl.h
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@ -34,17 +34,17 @@
template<class It> 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), 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) : 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, 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) : 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, 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) inline void spdlog::async_logger::_set_formatter(spdlog::formatter_ptr msg_formatter)

6
include/spdlog/details/registry.h
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@ -62,7 +62,7 @@ public:
return found->second; return found->second;
std::shared_ptr<logger> new_logger; std::shared_ptr<logger> new_logger;
if (_async_mode) 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 else
new_logger = std::make_shared<logger>(logger_name, sinks_begin, sinks_end); new_logger = std::make_shared<logger>(logger_name, sinks_begin, sinks_end);
@ -120,11 +120,12 @@ public:
l.second->set_level(log_level); 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); std::lock_guard<std::mutex> lock(_mutex);
_async_mode = true; _async_mode = true;
_async_q_size = q_size; _async_q_size = q_size;
_overflow_policy = overflow_policy;
_worker_warmup_cb = worker_warmup_cb; _worker_warmup_cb = worker_warmup_cb;
} }
@ -151,6 +152,7 @@ private:
level::level_enum _level = level::info; level::level_enum _level = level::info;
bool _async_mode = false; bool _async_mode = false;
size_t _async_q_size = 0; size_t _async_q_size = 0;
async_queue_overflow_policy _overflow_policy = async_queue_overflow_policy::block_retry;
std::function<void()> _worker_warmup_cb = nullptr; 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() 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. // 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 // 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 // Turn off async mode
void set_sync_mode(); void set_sync_mode();