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bitcoin/cmake/script/GenerateHeaderFromRaw.cmake

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cmake: Build `test_bitcoin` executable
3 months ago
# Copyright (c) 2023-present The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or https://opensource.org/license/mit/.
build: Minimize I/O operations in GenerateHeaderFromRaw.cmake Replaced multiple file writes with a single string template write. The raw content is first grouped into 8 byte chunks, followed by another regex replace which wraps them in `std::byte`. Tested the output with `diff -w` and they're the same - only whitespace differences because slightly different source formatting. Tested the performance with: > time cmake -DRAW_SOURCE_PATH=src/bench/data/block413567.raw -DHEADER_PATH=build/after/block413567.raw.h -DRAW_NAMESPACE=benchmark::data -P cmake/script/GenerateHeaderFromRaw.cmake Before: > 15.41s user 23.06s system 97% cpu 39.593 total After: > 0.77s user 0.06s system 97% cpu 0.849 total
2 months ago
cmake_path(GET RAW_SOURCE_PATH STEM raw_source_basename)
cmake: Build `test_bitcoin` executable
3 months ago
file(READ ${RAW_SOURCE_PATH} hex_content HEX)
build: Minimize I/O operations in GenerateHeaderFromRaw.cmake Replaced multiple file writes with a single string template write. The raw content is first grouped into 8 byte chunks, followed by another regex replace which wraps them in `std::byte`. Tested the output with `diff -w` and they're the same - only whitespace differences because slightly different source formatting. Tested the performance with: > time cmake -DRAW_SOURCE_PATH=src/bench/data/block413567.raw -DHEADER_PATH=build/after/block413567.raw.h -DRAW_NAMESPACE=benchmark::data -P cmake/script/GenerateHeaderFromRaw.cmake Before: > 15.41s user 23.06s system 97% cpu 39.593 total After: > 0.77s user 0.06s system 97% cpu 0.849 total
2 months ago
string(REGEX REPLACE "................" "\\0\n" formatted_bytes "${hex_content}")
string(REGEX REPLACE "[^\n][^\n]" "std::byte{0x\\0}, " formatted_bytes "${formatted_bytes}")
cmake: Build `test_bitcoin` executable
3 months ago
build: Minimize I/O operations in GenerateHeaderFromRaw.cmake Replaced multiple file writes with a single string template write. The raw content is first grouped into 8 byte chunks, followed by another regex replace which wraps them in `std::byte`. Tested the output with `diff -w` and they're the same - only whitespace differences because slightly different source formatting. Tested the performance with: > time cmake -DRAW_SOURCE_PATH=src/bench/data/block413567.raw -DHEADER_PATH=build/after/block413567.raw.h -DRAW_NAMESPACE=benchmark::data -P cmake/script/GenerateHeaderFromRaw.cmake Before: > 15.41s user 23.06s system 97% cpu 39.593 total After: > 0.77s user 0.06s system 97% cpu 0.849 total
2 months ago
set(header_content
"#include <cstddef>
#include <span>
cmake: Build `test_bitcoin` executable
3 months ago
build: Minimize I/O operations in GenerateHeaderFromRaw.cmake Replaced multiple file writes with a single string template write. The raw content is first grouped into 8 byte chunks, followed by another regex replace which wraps them in `std::byte`. Tested the output with `diff -w` and they're the same - only whitespace differences because slightly different source formatting. Tested the performance with: > time cmake -DRAW_SOURCE_PATH=src/bench/data/block413567.raw -DHEADER_PATH=build/after/block413567.raw.h -DRAW_NAMESPACE=benchmark::data -P cmake/script/GenerateHeaderFromRaw.cmake Before: > 15.41s user 23.06s system 97% cpu 39.593 total After: > 0.77s user 0.06s system 97% cpu 0.849 total
2 months ago
namespace ${RAW_NAMESPACE} {
inline constexpr std::byte detail_${raw_source_basename}_raw[] {
${formatted_bytes}
};
cmake: Build `test_bitcoin` executable
3 months ago
build: Minimize I/O operations in GenerateHeaderFromRaw.cmake Replaced multiple file writes with a single string template write. The raw content is first grouped into 8 byte chunks, followed by another regex replace which wraps them in `std::byte`. Tested the output with `diff -w` and they're the same - only whitespace differences because slightly different source formatting. Tested the performance with: > time cmake -DRAW_SOURCE_PATH=src/bench/data/block413567.raw -DHEADER_PATH=build/after/block413567.raw.h -DRAW_NAMESPACE=benchmark::data -P cmake/script/GenerateHeaderFromRaw.cmake Before: > 15.41s user 23.06s system 97% cpu 39.593 total After: > 0.77s user 0.06s system 97% cpu 0.849 total
2 months ago
inline constexpr std::span ${raw_source_basename}{detail_${raw_source_basename}_raw};
}
")
file(WRITE ${HEADER_PATH} "${header_content}")