Prints acc tags at runtime

example/heatEquation2D/src/heatEquation2D.cpp

@@ -215,5 +215,8 @@ auto main() -> int
     //   TagCpuSerial, TagGpuHipRt, TagGpuCudaRt, TagCpuOmp2Blocks, TagCpuTbbBlocks,
     //   TagCpuOmp2Threads, TagCpuSycl, TagCpuTbbBlocks, TagCpuThreads,
     //   TagFpgaSyclIntel, TagGenericSycl, TagGpuSyclIntel
+
+    std::cout << "Check enabled accelerator tags:" << std::endl;
+    alpaka::printTagNames<alpaka::EnabledAccTags>();
     return alpaka::executeForEachAccTag([=](auto const& tag) { return example(tag); });
 }

include/alpaka/acc/Tag.hpp

@@ -7,6 +7,7 @@
 #include "alpaka/core/BoostPredef.hpp"
 
 #include <iostream>
+#include <tuple>
 #include <type_traits>
 
 #define CREATE_ACC_TAG(tag_name)                                                                                      \
@@ -69,4 +70,28 @@ namespace alpaka
         alpaka::TagFpgaSyclIntel,
         alpaka::TagGpuSyclIntel>;
 
+    //!  \brief Function to print the names of each tag in the given tuple of tags
+    //!  \tparam TTuple is the type of the tuple of tags
+    template<typename TTuple>
+    void printTagNames()
+    {
+        // Check if the tuple is empty using std::tuple_size
+        if(std::tuple_size<TTuple>{} == 0)
+        {
+            std::cout << "No Tags!";
+        }
+        else
+        {
+            std::cout << "Tags: ";
+            // Print tags with comma in between
+            std::apply(
+                [](auto... args)
+                {
+                    auto index = std::tuple_size_v<TTuple>;
+                    ((std::cout << args.get_name() << (--index > 0u ? "," : "")), ...);
+                },
+                TTuple{});
+        }
+        std::cout << std::endl;
+    }
 } // namespace alpaka