flush every period

example/example.cpp

@@ -2,7 +2,7 @@
 //
 #include <string>
 #include <functional>
-
+#include <iomanip>
 #include "c11log/logger.h"
 #include "c11log/sinks/async_sink.h"
 #include "c11log/sinks/file_sinks.h"
@@ -47,7 +47,32 @@ void testlog(int threads)
 
 int main(int argc, char* argv[])
 {
+
     using namespace std::chrono;
+    using namespace c11log;
+    using namespace utils;
+    using std::cout;
+    using std::endl;
+
+    auto fsink2 = std::make_shared<sinks::rotating_file_sink>("log", "txt", 1024*1024*50 , 5, seconds(1));
+    auto &logger2 = c11log::get_logger("logger2");
+    logger2.add_sink(fsink2);
+    //logger2.add_sink(std::make_shared<sinks::null_sink>());
+
+    auto start = system_clock::now();
+    const unsigned int howmany = 10000000;
+    for(unsigned int i = 0; i < howmany ; i++)
+        logger2.info() << "Hello logger " << i;
+
+    auto delta = system_clock::now() - start;
+    auto delta_d = duration_cast<duration<double>> (delta);
+    cout << "Total " << format(howmany) << endl;
+    cout << "Delta " << format(delta_d.count()) << endl;
+    cout << "Rate: " << format(howmany/delta_d.count()) << "/sec" << endl;
+
+
+    return 0;
+
 
     if(argc !=3) {
         std::cerr << "Usage: " << argv[0] << " qsize, threads" << std::endl;
@@ -56,16 +81,18 @@ int main(int argc, char* argv[])
     int qsize = atoi(argv[1]);
     int threads = atoi(argv[2]);
 
-    using namespace c11log;
+
     auto null_sink = std::make_shared<sinks::null_sink>();
     auto stdout_sink = std::make_shared<sinks::stdout_sink>();
     auto async = std::make_shared<sinks::async_sink>(qsize);
-    auto fsink = std::make_shared<sinks::rotating_file_sink>("log", "txt", 1024*1024*50 , 5, 1000);
+    auto fsink = std::make_shared<sinks::rotating_file_sink>("log", "txt", 1024*1024*50 , 5,  std::chrono::milliseconds(1000));
 
     async->add_sink(fsink);
 
-    auto &logger = c11log::get_logger("async");
-    logger.add_sink(fsink);
+    //auto &logger = c11log::get_logger("async");
+    //logger.add_sink(fsink);
+
+
 
     testlog(threads);
 }

example/makefile

-CXX	= g++
+CXX	= ccache g++
 CXXFLAGS	= -march=native -Wall -Wextra -Wshadow -pedantic -std=c++11 -pthread -I../include 
 CXX_RELEASE_FLAGS = -O3 -flto 
 CXX_DEBUG_FLAGS= -g 

example/utils.h

@@ -19,6 +19,16 @@ std::string format(const T& value)
     return ss.str();
 }
 
+template<>
+std::string format(const double & value)
+{
+    static std::locale loc("");
+    std::stringstream ss;
+    ss.imbue(loc);
+    ss << std::fixed << std::setprecision(1) << value;
+    return ss.str();
+}
+
 inline void bench(const std::string& fn_name, const std::chrono::milliseconds &duration, const std::function<void() >& fn)
 {
     using namespace std::chrono;

include/c11log/details/blocking_queue.h

@@ -58,7 +58,7 @@ public:
     // If the queue is full, block the calling thread until there is room.
     template<typename TT>
     void push(TT&& item) {
-        while (!push(std::forward<TT>(item), one_hour));
+        while (!push(std::forward<TT>(item), _one_hour));
     }
 
     // Pop a copy of the front item in the queue into the given item ref.
@@ -85,7 +85,7 @@ public:
     // Pop a copy of the front item in the queue into the given item ref.
     // If the queue is empty, block the calling thread util there is item to pop.
     void pop(T& item) {
-        while (!pop(item, one_hour));
+        while (!pop(item, _one_hour));
     }
 
     // Clear the queue
@@ -103,7 +103,7 @@ private:
     std::mutex _mutex;
     std::condition_variable _item_pushed_cond;
     std::condition_variable _item_popped_cond;
-    static constexpr auto one_hour = std::chrono::hours(1);
+    static constexpr auto _one_hour = std::chrono::hours(1);
 };
 
 }

include/c11log/details/flush_helper.h

 #pragma once
-
+#include <chrono>
+#include <iostream>
 // Flush to file every X writes..
 
 namespace c11log {
 namespace details {
 class file_flush_helper {
 public:
-    explicit file_flush_helper(std::size_t flush_every): _flush_every(flush_every), _write_counter(0) {};
+    explicit file_flush_helper(const std::chrono::milliseconds &flush_every): _flush_every(flush_every), _last_flush() {};
 
     void write(std::ofstream& ofs, const std::string& msg) {
+
+
         ofs << msg;
-        if(++_write_counter >= _flush_every) {
+        //If zero - flush every time
+        if(_flush_every == std::chrono::milliseconds::min()) {
             ofs.flush();
-            _write_counter = 0;
+        } else {
+            auto now = std::chrono::system_clock::now();
+            if(now - _last_flush >= _flush_every) {
+                ofs.flush();
+                _last_flush = now;
+            }
         }
     }
 
 private:
-    std::size_t _flush_every;
-    std::size_t _write_counter;
+    std::chrono::milliseconds _flush_every;
+    std::chrono::system_clock::time_point _last_flush;
 };
 }
 }

include/c11log/details/line_logger.h

 #pragma once
 
-#include "../level.h"
+#include "../common_types.h"
 #include "../logger.h"
 #include "fast_oss.h"
 
@@ -16,7 +16,7 @@ public:
         _level(msg_level) {
         callback_logger->_formatter->format_header(callback_logger->_logger_name,
                 msg_level,
-                c11log::formatters::clock::now(),
+                log_clock::now(),
                 _oss);
     }
     line_logger(logger*):_callback_logger(nullptr) {};

include/c11log/formatter.h

 #pragma once
 
-#include<string>
-#include<chrono>
-#include<functional>
+#include <string>
+#include <chrono>
+#include <functional>
 #include <sstream>
+#include <iomanip>
 
-#include "level.h"
+#include "common_types.h"
 #include "details/os.h"
 
 namespace c11log {
 namespace formatters {
-typedef std::chrono::system_clock clock;
-typedef clock::time_point time_point;
-typedef std::function<std::string(const std::string& logger_name, const std::string&, level::level_enum, const time_point&)> format_fn;
+
+typedef std::function<std::string(const std::string& logger_name, const std::string&, level::level_enum, const c11log::log_clock::time_point&)> format_fn;
 
 
 std::string to_hex(const unsigned char* buf, std::size_t size);
@@ -21,19 +21,19 @@ class formatter {
 public:
     formatter() {}
     virtual ~formatter() {}
-    virtual void format_header(const std::string& logger_name, level::level_enum level, const time_point& tp, std::ostream& dest) = 0;
+    virtual void format_header(const std::string& logger_name, level::level_enum level, const log_clock::time_point& tp, std::ostream& dest) = 0;
 };
 
 
 class default_formatter: public formatter {
 public:
     // Format: [2013-12-29 01:04:42.900] [logger_name:Info] Message body
-    void format_header(const std::string& logger_name, level::level_enum level, const time_point& tp, std::ostream& dest) override {
+    void format_header(const std::string& logger_name, level::level_enum level, const log_clock::time_point& tp, std::ostream& dest) override {
         _format_time(tp, dest);
         dest << " [" <<  logger_name << ":" << c11log::level::to_str(level) << "] ";
     }
 private:
-    void _format_time(const time_point& tp, std::ostream &dest);
+    void _format_time(const log_clock::time_point& tp, std::ostream &dest);
 
 };
 } //namespace formatter
@@ -41,23 +41,19 @@ private:
 
 
 
-inline void c11log::formatters::default_formatter::_format_time(const time_point& tp, std::ostream &dest)
+inline void c11log::formatters::default_formatter::_format_time(const log_clock::time_point& tp, std::ostream &dest)
 {
     using namespace std::chrono;
 
-    static thread_local c11log::formatters::time_point last_tp;
-    static thread_local char timestamp_cache[64];
-
-
-    if(duration_cast<milliseconds>(tp-last_tp).count() > 950) {
-        auto tm = details::os::localtime(clock::to_time_t(tp));
-        sprintf(timestamp_cache, "[%d-%02d-%02d %02d:%02d:%02d]", tm.tm_year + 1900,
-                tm.tm_mon + 1,
-                tm.tm_mday,
-                tm.tm_hour,
-                tm.tm_min,
-                tm.tm_sec);
-        last_tp = tp;
-    }
-    dest << timestamp_cache;
+    auto tm = details::os::localtime(log_clock::to_time_t(tp));
+    char buff[64];
+    int size = snprintf(buff, sizeof(buff), "[%d-%02d-%02d %02d:%02d:%02d]",
+                        tm.tm_year + 1900,
+                        tm.tm_mon + 1,
+                        tm.tm_mday,
+                        tm.tm_hour,
+                        tm.tm_min,
+                        tm.tm_sec);
+
+    dest.write(buff, size);
 }

include/c11log/level.h

-#pragma once
-
-namespace c11log {
-namespace level {
-typedef enum {
-    DEBUG,
-    INFO,
-    WARNING,
-    ERROR,
-    FATAL,
-    NONE = 99
-} level_enum;
-const char* to_str(level_enum l);
-}
-}
-
-static const char* level_names[] { "Debug", "Info", "Warning", "Error", "Fatal" };
-inline const char* c11log::level::to_str(c11log::level::level_enum l)
-{
-    return level_names[l];
-}
\ No newline at end of file

include/c11log/logger.h

@@ -8,15 +8,18 @@
 #include<atomic>
 #include <algorithm>
 
-#include "level.h"
+#include "common_types.h"
 #include "sinks/base_sink.h"
 #include "details/factory.h"
 
 namespace c11log {
+
+
 namespace details {
 class line_logger;
 }
 
+
 class logger {
 public:
 

include/c11log/sinks/base_sink.h

@@ -4,7 +4,7 @@
 #include<atomic>
 
 #include "../formatter.h"
-#include "../level.h"
+#include "../common_types.h"
 
 namespace c11log {
 namespace sinks {

include/c11log/sinks/file_sinks.h

@@ -14,10 +14,12 @@ namespace sinks {
 */
 class simple_file_sink : public base_sink {
 public:
-    explicit simple_file_sink(const std::string &filename, const std::string& extension, size_t flush_after=1)
+    explicit simple_file_sink(const std::string &filename,
+                              const std::string& extension,
+                              const std::chrono::milliseconds &flush_every=std::chrono::milliseconds::zero())
         : _mutex(),
-          _ofstream(filename + "." + extension, std::ofstream::app),
-          _flush_helper(flush_after) {
+          _ofstream(filename + "." + extension, std::ofstream::binary|std::ofstream::app),
+          _flush_helper(flush_every) {
     }
 protected:
     void _sink_it(const std::string& msg) override {
@@ -36,15 +38,17 @@ private:
 */
 class rotating_file_sink : public base_sink {
 public:
-    rotating_file_sink(const std::string &base_filename, const std::string &extension, size_t max_size, size_t max_files, size_t flush_after=1):
+    rotating_file_sink(const std::string &base_filename, const std::string &extension,
+                       size_t max_size, size_t max_files,
+                       const std::chrono::milliseconds &flush_every = std::chrono::milliseconds::zero()):
         _base_filename(base_filename),
         _extension(extension),
         _max_size(max_size),
         _max_files(max_files),
         _current_size(0),
         _mutex(),
-        _ofstream(_calc_filename(_base_filename, 0, _extension)),
-        _flush_helper(flush_after) {
+        _ofstream(_calc_filename(_base_filename, 0, _extension), std::ofstream::binary),
+        _flush_helper(flush_every) {
     }
 
 protected:
@@ -102,14 +106,15 @@ private:
  */
 class daily_file_sink:public base_sink {
 public:
-    explicit daily_file_sink(const std::string& base_filename, const std::string& extension, size_t flush_after=1):
+    explicit daily_file_sink(const std::string& base_filename,
+                             const std::string& extension,
+                             const std::chrono::milliseconds &flush_every = std::chrono::milliseconds::zero()):
         _base_filename(base_filename),
         _extension(extension),
         _midnight_tp (_calc_midnight_tp() ),
         _mutex(),
-        _ofstream(_calc_filename(_base_filename, _extension), std::ofstream::app),
-		_flush_helper(flush_after)
-	{
+        _ofstream(_calc_filename(_base_filename, _extension), std::ofstream::binary|std::ofstream::app),
+        _flush_helper(flush_every) {
     }
 
 protected:
@@ -147,7 +152,7 @@ private:
     std::chrono::system_clock::time_point _midnight_tp;
     std::mutex _mutex;
     std::ofstream _ofstream;
-	details::file_flush_helper _flush_helper;
+    details::file_flush_helper _flush_helper;
 
 };
 }