added padder bench

bench/Makefile

 CXX	?= g++
 CXXFLAGS	= -march=native -Wall -Wextra -pedantic -Wconversion -std=c++11 -pthread -I../include -fmax-errors=1 
-CXX_RELEASE_FLAGS = -Ofast -flto -Wl,--no-as-needed
+CXX_RELEASE_FLAGS = -O3 -flto -Wl,--no-as-needed
 
 
-binaries=bench latency async_bench
+binaries=padder_bench
 
 all: $(binaries)
 
@@ -17,6 +17,10 @@ async_bench: async_bench.cpp
 	
 latency: latency.cpp
 	$(CXX) latency.cpp -o latency $(CXXFLAGS) $(CXX_RELEASE_FLAGS) -lbenchmark
+
+
+padder_bench: padder_bench.cpp
+	$(CXX) padder_bench.cpp -o padder_bench $(CXXFLAGS) $(CXX_RELEASE_FLAGS) -lbenchmark
 				
 
 .PHONY: clean

bench/padder_bench.cpp

+//
+// Copyright(c) 2018 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+//
+// latency.cpp : spdlog latency benchmarks
+//
+
+#include "benchmark/benchmark.h"
+
+#include "spdlog/spdlog.h"
+#include "spdlog/details/pattern_formatter.h"
+
+
+
+void bench_scoped_pad(benchmark::State &state, size_t wrapped_size, spdlog::details::padding_info padinfo)
+{
+    fmt::memory_buffer dest;
+    for (auto _ : state)
+    {
+        {
+            spdlog::details::scoped_pad p(wrapped_size, padinfo, dest);
+            benchmark::DoNotOptimize(p);
+        }
+//        if(dest.size() != (padinfo.width_-wrapped_size))
+//        {
+//            printf("NOT GOOD wrapped_size=%zu\t padinfo.width= %zu\tdest = %zu\n", wrapped_size, padinfo.width_, dest.size());
+//        }
+        dest.clear();
+
+    }
+}
+
+int main(int argc, char *argv[]) {
+
+    using spdlog::details::padding_info;
+    spdlog::set_pattern("[tid %t] %v");
+
+
+    std::vector<size_t> sizes = {0, 2, 4, 8, 16, 32, 64, 128};
+
+    for (auto size:sizes)
+    {
+        size_t wrapped_size = 8;
+        size_t padding_size = wrapped_size + size;
+
+        std::string title = "scoped_pad::left::" + std::to_string(size);
+
+        benchmark::RegisterBenchmark(title.c_str(),
+                bench_scoped_pad,
+                wrapped_size,
+                padding_info(padding_size, padding_info::left));
+
+        title = "scoped_pad::right::" + std::to_string(size);
+        benchmark::RegisterBenchmark(title.c_str(),
+                bench_scoped_pad,
+                wrapped_size,
+                padding_info(padding_size, padding_info::right));
+
+        title = "scoped_pad::center::" + std::to_string(size);
+        benchmark::RegisterBenchmark(title.c_str(),
+                                     bench_scoped_pad,
+                                     wrapped_size,
+                                     padding_info(padding_size, padding_info::center));
+    }
+
+
+
+    benchmark::Initialize(&argc, argv);
+    benchmark::RunSpecifiedBenchmarks();
+}

example/example.cpp

@@ -28,9 +28,32 @@ void clone_example();
 
 int main(int, char *[])
 {
-    spdlog::info("Welcome to spdlog version {}.{}.{} !", SPDLOG_VER_MAJOR, SPDLOG_VER_MINOR, SPDLOG_VER_PATCH);
-    spdlog::warn("Easy padding in numbers like {:08d}", 12);
-    spdlog::critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
+
+    spdlog::set_pattern("[%-8v]");
+    spdlog::info("LEFT");
+    spdlog::info("123");
+    spdlog::info("1234");
+    spdlog::info("12345678");
+    spdlog::info("123456789");
+
+
+    spdlog::set_pattern("[%=8v]");
+    spdlog::info("");
+    spdlog::info("CENTER");
+    spdlog::info("123");
+    spdlog::info("1234");
+    spdlog::info("12345678");
+    spdlog::info("123456789");
+
+    spdlog::set_pattern("[%8v]");
+    spdlog::info("");
+    spdlog::info("RIGHT");
+    spdlog::info("123");
+    spdlog::info("1234");
+    spdlog::info("12345678");
+    spdlog::info("123456789");
+
+    return 0;
     spdlog::info("Support for floats {:03.2f}", 1.23456);
     spdlog::info("Positional args are {1} {0}..", "too", "supported");
     spdlog::info("{:>8} aligned, {:>8} aligned", "right", "left");