test: Use span for raw data

This change allows to drop brittle sizeof calls in favor of the
std::span::size method.

Other improvements include:

* Use of a namespace to mark test and bench data
* Use of the modern std::byte
* Drop of a no longer used std::vector copy and the bench/data module

Author: MarcoFalke

cmake/module/GenerateHeaders.cmake

@@ -11,10 +11,10 @@ function(generate_header_from_json json_source_relpath)
   )
 endfunction()
 
-function(generate_header_from_raw raw_source_relpath)
+function(generate_header_from_raw raw_source_relpath raw_namespace)
   add_custom_command(
     OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${raw_source_relpath}.h
-    COMMAND ${CMAKE_COMMAND} -DRAW_SOURCE_PATH=${CMAKE_CURRENT_SOURCE_DIR}/${raw_source_relpath} -DHEADER_PATH=${CMAKE_CURRENT_BINARY_DIR}/${raw_source_relpath}.h -P ${PROJECT_SOURCE_DIR}/cmake/script/GenerateHeaderFromRaw.cmake
+    COMMAND ${CMAKE_COMMAND} -DRAW_SOURCE_PATH=${CMAKE_CURRENT_SOURCE_DIR}/${raw_source_relpath} -DHEADER_PATH=${CMAKE_CURRENT_BINARY_DIR}/${raw_source_relpath}.h -DRAW_NAMESPACE=${raw_namespace} -P ${PROJECT_SOURCE_DIR}/cmake/script/GenerateHeaderFromRaw.cmake
     DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${raw_source_relpath} ${PROJECT_SOURCE_DIR}/cmake/script/GenerateHeaderFromRaw.cmake
     VERBATIM
   )

cmake/script/GenerateHeaderFromRaw.cmake

@@ -5,18 +5,23 @@
 file(READ ${RAW_SOURCE_PATH} hex_content HEX)
 string(REGEX MATCHALL "([A-Za-z0-9][A-Za-z0-9])" bytes "${hex_content}")
 
+file(WRITE ${HEADER_PATH} "#include <cstddef>\n")
+file(APPEND ${HEADER_PATH} "#include <span>\n")
+file(APPEND ${HEADER_PATH} "namespace ${RAW_NAMESPACE} {\n")
 get_filename_component(raw_source_basename ${RAW_SOURCE_PATH} NAME_WE)
-file(WRITE ${HEADER_PATH} "static unsigned const char ${raw_source_basename}_raw[] = {\n")
+file(APPEND ${HEADER_PATH} "inline constexpr std::byte detail_${raw_source_basename}_raw[]{\n")
 
 set(i 0)
 foreach(byte ${bytes})
   math(EXPR i "${i} + 1")
   math(EXPR remainder "${i} % 8")
   if(remainder EQUAL 0)
-    file(APPEND ${HEADER_PATH} "0x${byte},\n")
+    file(APPEND ${HEADER_PATH} "std::byte{0x${byte}},\n")
   else()
-    file(APPEND ${HEADER_PATH} "0x${byte}, ")
+    file(APPEND ${HEADER_PATH} "std::byte{0x${byte}}, ")
   endif()
 endforeach()
 
-file(APPEND ${HEADER_PATH} "\n};")
+file(APPEND ${HEADER_PATH} "\n};\n")
+file(APPEND ${HEADER_PATH} "inline constexpr std::span ${raw_source_basename}{detail_${raw_source_basename}_raw};\n")
+file(APPEND ${HEADER_PATH} "}")

src/bench/CMakeLists.txt

@@ -3,12 +3,11 @@
 # file COPYING or https://opensource.org/license/mit/.
 
 include(GenerateHeaders)
-generate_header_from_raw(data/block413567.raw)
+generate_header_from_raw(data/block413567.raw benchmark::data)
 
 add_executable(bench_bitcoin
   bench_bitcoin.cpp
   bench.cpp
-  data.cpp
   nanobench.cpp
   ${CMAKE_CURRENT_BINARY_DIR}/data/block413567.raw.h
 # Benchmarks:

src/bench/checkblock.cpp

@@ -3,7 +3,7 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <bench/bench.h>
-#include <bench/data.h>
+#include <bench/data/block413567.raw.h>
 #include <chainparams.h>
 #include <common/args.h>
 #include <consensus/validation.h>

src/bench/data.cpp

@@ -3,7 +3,7 @@
 // file COPYING or https://www.opensource.org/licenses/mit-license.php.
 
 #include <bench/bench.h>
-#include <bench/data.h>
+#include <bench/data/block413567.raw.h>
 #include <chainparams.h>
 #include <flatfile.h>
 #include <node/blockstorage.h>

src/bench/data.h

@@ -3,7 +3,7 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <bench/bench.h>
-#include <bench/data.h>
+#include <bench/data/block413567.raw.h>
 #include <flatfile.h>
 #include <node/blockstorage.h>
 #include <primitives/block.h>

src/bench/load_external.cpp

@@ -3,7 +3,7 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <bench/bench.h>
-#include <bench/data.h>
+#include <bench/data/block413567.raw.h>
 #include <chain.h>
 #include <core_io.h>
 #include <primitives/block.h>

src/bench/readblock.cpp

@@ -3,7 +3,7 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <bench/bench.h>
-#include <bench/data.h>
+#include <bench/data/block413567.raw.h>
 #include <span.h>
 #include <util/strencodings.h>