disable syslog by default (enable by #define SPDLOG_ENABLE_SYSLOG )

example/example.cpp

@@ -5,6 +5,7 @@
 //
 // spdlog usage example
 //
+//
 #include "spdlog/spdlog.h"
 
 #include <iostream>

include/spdlog/common.h

@@ -37,16 +37,6 @@
 #define DEPRECATED
 #endif
 
-#include <spdlog/tweakme.h>
-
-#ifndef SPDLOG_ENABLE_SYSLOG
-#if defined (__linux__) || defined(__APPLE__)  || defined(__FreeBSD__)
-#define SPDLOG_ENABLE_SYSLOG
-#elif defined(sun) || defined(__sun)
-#define SPDLOG_ENABLE_SYSLOG
-#endif
-#endif
-
 
 #include <spdlog/fmt/fmt.h>
 

include/spdlog/details/mpmc_bounded_q.h

@@ -60,7 +60,8 @@ public:
 
     using item_type = T;
     mpmc_bounded_queue(size_t buffer_size)
-        : buffer_(new cell_t [buffer_size]),
+		:max_size_(buffer_size),
+        buffer_(new cell_t [buffer_size]),
           buffer_mask_(buffer_size - 1)
     {
         //queue size must be power of two
@@ -132,6 +133,16 @@ public:
         return true;
     }
 
+	size_t approx_size()
+	{
+		size_t first_pos = dequeue_pos_.load(std::memory_order_relaxed);
+		size_t last_pos = enqueue_pos_.load(std::memory_order_relaxed);
+		if (last_pos <= first_pos) 
+			return 0;
+		auto size = last_pos - first_pos;
+		return size < max_size_ ? size : max_size_;
+	}
+
 private:
     struct cell_t
     {
@@ -139,6 +150,8 @@ private:
         T                     data_;
     };
 
+	size_t const max_size_;
+
     static size_t const     cacheline_size = 64;
     typedef char            cacheline_pad_t [cacheline_size];
 
@@ -151,8 +164,8 @@ private:
     std::atomic<size_t>     dequeue_pos_;
     cacheline_pad_t         pad3_;
 
-    mpmc_bounded_queue(mpmc_bounded_queue const&);
+    mpmc_bounded_queue(mpmc_bounded_queue const&) = delete;
-    void operator = (mpmc_bounded_queue const&);
+    void operator= (mpmc_bounded_queue const&) = delete;	
 };
 
 } // ns details

include/spdlog/details/os.h

@@ -250,7 +250,6 @@ inline int utc_minutes_offset(const std::tm& tm = details::os::localtime())
         offset -= tzinfo.StandardBias;
     return offset;
 #else
-    long int offset_seconds;
     
 #if defined(sun) || defined(__sun)
     // 'tm_gmtoff' field is BSD extension and it's missing on SunOS/Solaris
@@ -280,9 +279,9 @@ inline int utc_minutes_offset(const std::tm& tm = details::os::localtime())
         }
     };
 
-    offset_seconds = helper::calculate_gmt_offset(tm);
+    long int offset_seconds = helper::calculate_gmt_offset(tm);
 #else
-    offset_seconds = tm.tm_gmtoff;
+    long int offset_seconds = tm.tm_gmtoff;
 #endif
 
     return static_cast<int>(offset_seconds / 60);

include/spdlog/tweakme.h

@@ -11,13 +11,6 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
-///////////////////////////////////////////////////////////////////////////////
-// By default, syslog sink is only enabled on tested operating systems.
-// Uncomment to enable it unconditionally.
-//
-// #define SPDLOG_ENABLE_SYSLOG
-///////////////////////////////////////////////////////////////////////////////
-
 
 ///////////////////////////////////////////////////////////////////////////////
 // Under Linux, the much faster CLOCK_REALTIME_COARSE clock can be used.
@@ -56,7 +49,6 @@
 // #define SPDLOG_NO_NAME
 ///////////////////////////////////////////////////////////////////////////////
 
-
 ///////////////////////////////////////////////////////////////////////////////
 // Uncomment to enable the SPDLOG_DEBUG/SPDLOG_TRACE macros.
 //
@@ -100,3 +92,12 @@
 //
 // #define SPDLOG_FMT_EXTERNAL
 ///////////////////////////////////////////////////////////////////////////////
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to enable syslog (disabled by default)
+//
+// #define SPDLOG_ENABLE_SYSLOG
+///////////////////////////////////////////////////////////////////////////////
+
+