Merge branch 'master' into 15-add-pybind11-bindings-for-core-classes

README.md

@@ -171,7 +171,6 @@ These are captured in `vcpkg.json`:
 * [vcpkg](https://github.com/Microsoft/vcpkg)
   * catch2: unit test framework
   * libtiff: TIFF IO support
-  * spdlog: logging framework
   * benchmark: used to run performance benchmarks
   * async++ (optional): implements c++17 parallel algorithms
   * cxxopts: nice command line parsing
@@ -183,11 +182,6 @@ These are captured in `vcpkg.json`:
   * [average_subtract](examples/average_subtract/README.md): a utility to read in n
     images, find the average and write out n new images with the mean subtracted
 
-## Logging
-
-Logging is done via [spdlog](https://github.com/gabime/spdlog), to change the
-log level you can use the environmental variable `SPDLOG_LEVEL=<level>`.
-
 # TODO
 
 * build

examples/process/main.cpp

@@ -183,6 +183,16 @@ int main( int argc, char* argv[] )
                      };
 
     // check execution
+    if (thread_count <= 1)
+    {
+        logger::info("processing using single thread");
+        size_t i = 0;
+        for ( const auto& ia : grid )
+        {
+            processor(i++, ia);
+        }
+    }
+    else
 #if defined(ASYNCPLUSPLUS)
     if ( execution == "async++" )
     {