Under linux, use the much faster CLOCK_REALTIME_COARSE clock by default...

Under linux, use the much faster CLOCK_REALTIME_COARSE clock by default (SPDLOG_CLOCK_COARSE is defined in common.h)

include/spdlog/common.h

@@ -36,6 +36,14 @@
 #define SPDLOG_NOEXCEPT
 #endif
 
+// under linux, use the much faster CLOCK_REALTIME_COARSE clock.
+// this clock is less accurate - resolution is 1ms under i386 and x86_64.
+// comment to use the regular (and slower) clock
+
+#ifdef __linux__
+#define SPDLOG_CLOCK_COARSE
+#endif
+
 namespace spdlog
 {
 

include/spdlog/details/line_logger.h

@@ -26,9 +26,6 @@
 #include <type_traits>
 #include "../common.h"
 #include "../logger.h"
-#ifdef SPDLOG_CLOCK_COARSE
-#include <time.h>
-#endif
 
 
 // Line logger class - aggregates operator<< calls to fast ostream
@@ -67,15 +64,7 @@ public:
         if (_enabled)
         {
             _log_msg.logger_name = _callback_logger->name();
-#ifndef SPDLOG_CLOCK_COARSE
-            _log_msg.time = log_clock::now();
-#else
-            timespec ts;
-            ::clock_gettime(CLOCK_REALTIME_COARSE, &ts);
-            _log_msg.time = std::chrono::time_point<log_clock, typename log_clock::duration>(
-                                std::chrono::duration_cast<typename log_clock::duration>(
-                                    std::chrono::seconds(ts.tv_sec) + std::chrono::nanoseconds(ts.tv_nsec)));
-#endif
+            _log_msg.time = os::now();
             _callback_logger->_log_msg(_log_msg);
         }
     }

include/spdlog/details/os.h

@@ -23,7 +23,6 @@
 /*************************************************************************/
 
 #pragma once
-
 #include<string>
 #include<cstdio>
 #include<ctime>
@@ -35,6 +34,8 @@
 # include <Windows.h>
 #endif
 
+#include "..\common.h"
+
 namespace spdlog
 {
 namespace details
@@ -42,6 +43,21 @@ namespace details
 namespace os
 {
 
+inline spdlog::log_clock::time_point now()
+{
+
+#ifdef SPDLOG_CLOCK_COARSE
+    timespec ts;
+    ::clock_gettime(CLOCK_REALTIME_COARSE, &ts);
+    return std::chrono::time_point<log_clock, typename log_clock::duration>(
+               std::chrono::duration_cast<typename log_clock::duration>(
+                   std::chrono::seconds(ts.tv_sec) + std::chrono::nanoseconds(ts.tv_nsec)));
+
+#else
+    return log_clock::now();
+#endif
+
+}
 inline std::tm localtime(const std::time_t &time_tt)
 {