mirror of
https://github.com/nlohmann/json.git
synced 2026-10-22 14:08:13 +00:00
Niels Lohmann
2dc1e54856
* Compare json_view with yyjson, simdjson, and Boost.JSON tests/benchmarks/json_view/ holds a comparison with other libraries, answering the question users ask when they pick one. It is not built by CMake and not run by CI. - bench_view.cpp: parse, traverse, select and dump of twitter, citm_catalog, canada, jeopardy, a tweet and an RPC request, against json_view, yyjson, simdjson, Boost.JSON and json::parse, all agreeing and run interleaved. - bench_corpus.cpp: parse, traverse and dump of any file list. - bench_edit.cpp: parses, edits through each library's own API, and serializes; all outputs must describe the same value. - compare.py: builds both programs with system or pinned, SHA-256-checked downloads, and writes results with the commit, CPU, OS, compiler and library versions. - README.md and a workflow that runs on demand or via a PR label. Fairness fixes folded in: each engine runs once untimed before each timed round, so the next one no longer pays for the previous one's cleanup; dump is also compared with source numbers against yyjson's raw-number mode; a "simdjson DOM (fresh)" column and a reused-document column for json_view were added; compare.py's paths are absolute; downloads use a .part file and a failed checksum removes the archive. Signed-off-by: Niels Lohmann <mail@nlohmann.me> * Make the downloads of json_view's compare.py robust Hash the archives in chunks instead of reading them into memory, download with a timeout, extract into a temporary directory that is renamed into place only after success (a half-extracted directory was trusted forever), and split CXX and CC into arguments so that values like 'ccache g++' work. Note at the pins that a SHA-256 mismatch of a GitHub tag archive means that GitHub regenerated it. Signed-off-by: Niels Lohmann <mail@nlohmann.me> * Add a timeout and a concurrency group to the json_view benchmarks Signed-off-by: Niels Lohmann <mail@nlohmann.me> * Check the CSV file and the round count in the json_view benchmarks fopen() of the CSV output was not checked, so an unwritable directory made fprintf() write to a null FILE*; the round count is parsed with strtol and clamped instead of atoi. Signed-off-by: Niels Lohmann <mail@nlohmann.me> --------- Signed-off-by: Niels Lohmann <mail@nlohmann.me>