Refactor Memory Access Iterators

CMakeLists.txt

@@ -134,6 +134,7 @@ if(${CMAKE_PROJECT_NAME} STREQUAL ${PROJECT_NAME})
   #########################################
 
   if(BUILD_TESTING)
+    include("${PROJECT_SOURCE_DIR}/cmake/testUtils.cmake")
     include(CTest)
     enable_testing()
     add_subdirectory("test/")

cmake/testUtils.cmake

@@ -0,0 +1,60 @@
+# Copyright 2022 Simeon Ehrig
+#
+# This file is part of vikunja.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Create an executable file for the test, link it to the required test targets and add it to ctest.
+#
+#    vikunja_add_default_test(TARGET <name>
+#                             SOURCE <list of source files>
+#                             [INCLUDE <list of include paths>]
+#                            )
+#
+# * TARGET: name of the executable, will be prefixed with `test_`
+# * SOURCE: path of the source file(s)
+# * INCLUDE: optional path(s) to include folder(s)
+macro(vikunja_add_default_test)
+  set(_MACRO_PREFIX "vikTest")
+  set(_SINGLE_ARG TARGET)
+  set(_MULTI_ARG SOURCE INCLUDE)
+
+  cmake_parse_arguments(
+    "${_MACRO_PREFIX}"
+    "" # option
+    "${_SINGLE_ARG}"
+    "${_MULTI_ARG}"
+    "${ARGN}"
+    )
+
+  if(NOT DEFINED ${_MACRO_PREFIX}_TARGET)
+    message(FATAL_ERROR "vikunja_add_default_test: no target name defined")
+  endif()
+
+  if(NOT DEFINED ${_MACRO_PREFIX}_SOURCE)
+    message(FATAL_ERROR "vikunja_add_default_test: no source files defined")
+  endif()
+
+  set(_TARGET_NAME "test_${${_MACRO_PREFIX}_TARGET}")
+
+  alpaka_add_executable(
+    ${_TARGET_NAME}
+    ${${_MACRO_PREFIX}_SOURCE}
+  )
+
+  if(DEFINED ${_MACRO_PREFIX}_INCLUDE)
+    message(VERBOSE "vikunja_add_default_test: add ${${_MACRO_PREFIX}_INCLUDE} include paths to ${_TARGET_NAME}")
+    target_include_directories(${_TARGET_NAME} PRIVATE ${${_MACRO_PREFIX}_INCLUDE})
+  endif()
+
+  target_link_libraries(${_TARGET_NAME}
+    PRIVATE
+    vikunja::internalvikunja
+    vikunja::testSetup
+  )
+
+  add_test(NAME ${_TARGET_NAME} COMMAND ${_TARGET_NAME} ${_VIKUNJA_TEST_OPTIONS})
+
+endmacro()

include/vikunja/access/BaseStrategy.hpp

@@ -0,0 +1,89 @@
+/* Copyright 2022 Hauke Mewes, Jonas Schenke, Simeon Ehrig
+ *
+ * This file is part of vikunja.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <alpaka/alpaka.hpp>
+
+namespace vikunja::MemAccess
+{
+    //! Base class to implement memory access strategy.
+    //!
+    //! \tparam TIdx Index type
+    template<typename TIdx>
+    class BaseStrategy
+    {
+    protected:
+        TIdx m_index;
+        TIdx const m_maximum;
+
+    public:
+        //-----------------------------------------------------------------------------
+        //! Constructor.
+        //!
+        //! \param index The index.
+        //! \param maximum The first index outside of the iterator memory.
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE BaseStrategy(TIdx const index, TIdx const maximum)
+            : m_index(index)
+            , m_maximum(maximum)
+        {
+        }
+
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE BaseStrategy(const BaseStrategy& other) = default;
+
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE auto operator==(const BaseStrategy& other) const -> bool
+        {
+            return (this->m_index == other.m_index) && (this->m_maximum == other.m_maximum);
+        }
+
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE auto operator!=(const BaseStrategy& other) const -> bool
+        {
+            return !operator==(other);
+        }
+
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE auto operator<(const BaseStrategy& other) const -> bool
+        {
+            return m_index < other.m_index;
+        }
+
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE auto operator>(const BaseStrategy& other) const -> bool
+        {
+            return m_index > other.m_index;
+        }
+
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE auto operator<=(const BaseStrategy& other) const -> bool
+        {
+            return m_index <= other.m_index;
+        }
+
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE auto operator>=(const BaseStrategy& other) const -> bool
+        {
+            return m_index >= other.m_index;
+        }
+
+        //-----------------------------------------------------------------------------
+        //! Get the current index.
+        //!
+        //! Returns a const reference to the current index.
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE auto operator*() const -> TIdx const&
+        {
+            return m_index;
+        }
+
+        //-----------------------------------------------------------------------------
+        //! Set the current index
+        //!
+        //! Returns a reference to the current index.
+        ALPAKA_FN_HOST_ACC ALPAKA_FN_INLINE auto operator*() -> TIdx&
+        {
+            return m_index;
+        }
+    };
+
+} // namespace vikunja::MemAccess