fast_buf\!

example/example.cpp

@@ -15,14 +15,13 @@ using namespace std::chrono;
 using namespace c11log;
 using namespace utils;
 
-
 int main(int argc, char* argv[])
 {
 
-	if(argc || argv) {};
+    if(argc || argv) {};
 
     auto fsink = std::make_shared<sinks::rotating_file_sink>("log", "txt", 1024*1024*50 , 5, 0);
-	//auto fsink = std::make_shared<sinks::simple_file_sink>("simplelog", "txt");
+    //auto fsink = std::make_shared<sinks::simple_file_sink>("simplelog", "txt");
     auto null_sink = std::make_shared<sinks::null_sink>();
 
 
@@ -35,7 +34,7 @@ int main(int argc, char* argv[])
 
     auto start = system_clock::now();
 
-    const unsigned int howmany = 3000000;
+    const unsigned int howmany = 5000000;
     for(unsigned int i = 0; i < howmany ; i++)
         my_logger.info() << "Hello logger " << i;
 

include/c11log/common_types.h

@@ -6,6 +6,7 @@ namespace c11log
 {
 
 typedef std::chrono::system_clock log_clock;
+typedef std::pair<const char*, std::size_t> bufpair_t;
 
 namespace level
 {

include/c11log/details/fast_oss.h

@@ -2,8 +2,7 @@
 
 // Faster than ostringstream--returns its string by ref
 
-#include<streambuf>
+#include "c11log/details/fast_buf.h"
-#include<string>
 
 namespace c11log
 {
@@ -12,7 +11,7 @@ namespace details
 
 class str_devicebuf:public std::streambuf
 {
-public:	
+public:
     str_devicebuf() = default;
     ~str_devicebuf() = default;
 
@@ -21,15 +20,21 @@ public:
     str_devicebuf& operator=(const str_devicebuf&) = delete;
     str_devicebuf& operator=(str_devicebuf&&) = delete;
 
-
+    /*
     const std::string& str_ref() const
     {
         return _str;
     }
+     */
+    bufpair_t buf()
+    {
+        return _fastbuf.get();
+    }
 
     void reset_str()
     {
-        _str.clear();
+        //_str.clear();
+        _fastbuf.clear();
     }
 
 protected:
@@ -38,32 +43,35 @@ protected:
         return 0;
     }
 
-	// copy the give buffer into the accumulated string.
+    // copy the give buffer into the accumulated string.
-	// reserve initially 128 bytes which should be enough for common log lines
+    // reserve initially 128 bytes which should be enough for common log lines
-	std::streamsize xsputn(const char_type* s, std::streamsize count) override
+    std::streamsize xsputn(const char_type* s, std::streamsize count) override
-    {		
+    {
-		if(_str.capacity() < k_initial_reserve)
+        /*
-		{
+        if(_str.capacity() < k_initial_reserve)
-			_str.reserve(k_initial_reserve);
+        {
-		}
+        	_str.reserve(k_initial_reserve);
-		_str.append(s, static_cast<unsigned int>(count));
+        }
+        _str.append(s, static_cast<unsigned int>(count));
+         */
+        _fastbuf.append(s, static_cast<unsigned int>(count));
         return count;
     }
 
     int_type overflow(int_type ch) override
     {
 
-		bool not_eofile =  traits_type::not_eof(ch);
+        bool not_eofile =  traits_type::not_eof(ch);
         if (not_eofile)
-		{
+        {
-			char c = traits_type::to_char_type(ch);
+            char c = traits_type::to_char_type(ch);
             xsputn(&c, 1);
-		}
+        }
-		return not_eofile;
+        return not_eofile;
     }
 private:
-    std::string _str;
+    //std::string _str;
-	static constexpr std::streamsize k_initial_reserve = 128;
+    fast_buf<128> _fastbuf;
 };
 
 class fast_oss:public std::ostream
@@ -75,15 +83,21 @@ public:
     fast_oss(const fast_oss& other) = delete;
     fast_oss(fast_oss&& other) = delete;
     fast_oss& operator=(const fast_oss& other) = delete;
-
+    /*
     const std::string& str_ref() const
     {
         return _dev.str_ref();
     }
-	void reset_str()
+     */
-	{
+    bufpair_t buf()
-		_dev.reset_str();
+    {
-	}
+        return _dev.buf();
+    }
+
+    void reset_str()
+    {
+        _dev.reset_str();
+    }
 
 private:
     str_devicebuf _dev;

include/c11log/details/flush_helper.h

@@ -13,9 +13,9 @@ public:
         _flush_every(flush_every),
         _write_counter(0) {};
 
-    void write(std::ofstream& ofs, const std::string& msg)
+    void write(std::ofstream& ofs, const bufpair_t& msg)
     {
-        ofs.write(msg.c_str(), msg.size());
+        ofs.write(msg.first, msg.second);
         if(++_write_counter == _flush_every)
         {
             ofs.flush();

include/c11log/details/line_logger.h

@@ -50,7 +50,7 @@ public:
         if (_enabled)
         {
             _oss << os::eol();
-            _callback_logger->_log_it(_oss.str_ref(), _level);
+            _callback_logger->_log_it(_oss.buf(), _level);
         }
     }
 

include/c11log/details/os.h

@@ -50,9 +50,9 @@ inline bool operator!=(const std::tm& tm1, const std::tm& tm2)
 constexpr inline const char* eol()
 {
 #ifdef _WIN32
-	return "\r\n";
+    return "\r\n";
 #else
-	return "\n";
+    return "\n";
 #endif
 }
 } //os

include/c11log/formatter.h

@@ -88,9 +88,10 @@ inline void c11log::formatters::default_formatter::_format_time(const log_clock:
         time_oss << tm_now.tm_sec << ']';
         //Cache the resulted string and its size
         s_cache_time_t = tp_time_t;
-        const std::string &s = time_oss.str_ref();
+        //const std::string &s = time_oss.str_ref();
-        std::memcpy(s_cache_str, s.c_str(), s.size());
+        bufpair_t buf = time_oss.buf();
-        s_cache_size = s.size();
+        std::memcpy(s_cache_str, buf.first, buf.second);
+        s_cache_size = buf.second;
     }
     dest.write(s_cache_str, s_cache_size);
 }

include/c11log/logger.h

@@ -21,6 +21,7 @@ namespace c11log
 namespace details
 {
 class line_logger;
+template<std::size_t> class fast_buf;
 }
 
 
@@ -67,7 +68,7 @@ private:
     sinks_vector_t _sinks;
     std::atomic_int _atomic_level;
 
-    void _log_it(const std::string& msg, const level::level_enum level);
+    void _log_it(const bufpair_t& buf, const level::level_enum level);
 
 };
 
@@ -80,6 +81,7 @@ logger& get_logger(const std::string& name);
 // Logger inline implementation
 //
 #include "details/line_logger.h"
+#include "details/fast_buf.h"
 
 
 inline c11log::logger::logger(const std::string& name, formatter_ptr f, sinks_init_list sinks_list) :
@@ -145,10 +147,11 @@ inline bool c11log::logger::should_log(c11log::level::level_enum level) const
 {
     return level >= _atomic_level.load();
 }
-inline void c11log::logger::_log_it(const std::string& msg, const level::level_enum level)
+
+inline void c11log::logger::_log_it(const bufpair_t& buf, const level::level_enum level)
 {
     for (auto &sink : _sinks)
-        sink->log(msg, level);
+        sink->log(buf, level);
 }
 
 // Static factory function

include/c11log/sinks/async_sink.h

@@ -28,7 +28,7 @@ public:
 
 
 protected:
-    void _sink_it(const std::string& msg) override;
+    void _sink_it(const bufpair_t& msg) override;
     void _thread_loop();
 
 private:
@@ -57,9 +57,10 @@ inline c11log::sinks::async_sink::~async_sink()
 {
     _shutdown();
 }
-inline void c11log::sinks::async_sink::_sink_it(const std::string& msg)
+inline void c11log::sinks::async_sink::_sink_it(const bufpair_t& msg)
 {
-    _q.push(msg);
+    std::string s {msg.first, msg.first+msg.second};
+    _q.push(s);
 }
 
 inline void c11log::sinks::async_sink::_thread_loop()
@@ -71,9 +72,10 @@ inline void c11log::sinks::async_sink::_thread_loop()
     {
         if (_q.pop(msg, pop_timeout))
         {
+            bufpair_t buf(msg.data(), msg.size());
             for (auto &sink : _sinks)
             {
-                sink->log(msg, static_cast<level::level_enum>(_level.load()));
+                sink->log(buf, static_cast<level::level_enum>(_level.load()));
                 if (!_active)
                     return;
             }

include/c11log/sinks/base_sink.h

@@ -22,7 +22,7 @@ public:
     base_sink(const base_sink&) = delete;
     base_sink& operator=(const base_sink&) = delete;
 
-    void log(const std::string &msg, level::level_enum level)
+    void log(const bufpair_t &msg, level::level_enum level)
     {
         if (level >= _level)
         {
@@ -36,14 +36,14 @@ public:
     }
 
 protected:
-    virtual void _sink_it(const std::string& msg) = 0;
+    virtual void _sink_it(const bufpair_t& msg) = 0;
     std::atomic<int> _level {level::INFO};
 };
 
 class null_sink:public base_sink
 {
 protected:
-    void _sink_it(const std::string& ) override
+    void _sink_it(const bufpair_t& ) override
     {
     }
 };

include/c11log/sinks/console_sinks.h

@@ -19,10 +19,10 @@ public:
     virtual ~console_sink() = default;
 
 protected:
-    virtual void _sink_it(const std::string& msg) override
+    virtual void _sink_it(const bufpair_t& msg) override
     {
         std::lock_guard<std::mutex> lock(_mutex);
-        _ostream << msg;
+        _ostream.write(msg.first, msg.second);
     }
 
     std::ostream& _ostream;

include/c11log/sinks/file_sinks.h

@@ -26,7 +26,7 @@ public:
     {
     }
 protected:
-    void _sink_it(const std::string& msg) override
+    void _sink_it(const bufpair_t& msg) override
     {
         std::lock_guard<std::mutex> lock(_mutex);
         _flush_helper.write(_ofstream, msg);
@@ -59,14 +59,14 @@ public:
     }
 
 protected:
-    void _sink_it(const std::string& msg) override
+    void _sink_it(const bufpair_t& msg) override
     {
         std::lock_guard<std::mutex> lock(_mutex);
-        _current_size += msg.length();
+        _current_size += msg.second;
         if (_current_size  > _max_size)
         {
             _rotate();
-            _current_size = msg.length();
+            _current_size = msg.second;
         }
         _flush_helper.write(_ofstream, msg);
     }
@@ -132,7 +132,7 @@ public:
     }
 
 protected:
-    void _sink_it(const std::string& msg) override
+    void _sink_it(const bufpair_t& msg) override
     {
         std::lock_guard<std::mutex> lock(_mutex);
         if (std::chrono::system_clock::now() >= _midnight_tp)