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Benchmark json_document

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benchmarks_view.cpp adds ViewParse, ViewRead (a reused document),
ViewParseIndented, ViewAccept, and ViewMaterialize on the files of
ParseString, so that each row can be read against the json::parse row of
the same file; benchmarks.cpp gains Accept (json::accept) as the
counterpart of ViewAccept. The view benchmarks are built only if the
header directory has json_view.hpp, so that older versions can still be
benchmarked.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-09-28 22:22:24 +02:00
parent 061c30310e
commit 8c1b230277
4 changed files with 186 additions and 1 deletions
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25
tests/benchmarks/src/benchmarks.cpp
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@@ -81,6 +81,31 @@ BENCHMARK_CAPTURE(ParseString, signed_ints, TEST_DATA_DIRECTORY "/regressi
BENCHMARK_CAPTURE(ParseString, unsigned_ints, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
BENCHMARK_CAPTURE(ParseString, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
//////////////////////////////////////////////////////////////////////////////
// validate JSON from string
//////////////////////////////////////////////////////////////////////////////
static void Accept(benchmark::State& state, const char* filename)
{
std::ifstream f(filename);
std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
while (state.KeepRunning())
{
benchmark::DoNotOptimize(json::accept(str));
}
state.SetBytesProcessed(state.iterations() * str.size());
}
BENCHMARK_CAPTURE(Accept, jeopardy, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
BENCHMARK_CAPTURE(Accept, canada, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
BENCHMARK_CAPTURE(Accept, citm_catalog, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
BENCHMARK_CAPTURE(Accept, twitter, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
BENCHMARK_CAPTURE(Accept, floats, TEST_DATA_DIRECTORY "/regression/floats.json");
BENCHMARK_CAPTURE(Accept, signed_ints, TEST_DATA_DIRECTORY "/regression/signed_ints.json");
BENCHMARK_CAPTURE(Accept, unsigned_ints, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
BENCHMARK_CAPTURE(Accept, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
//////////////////////////////////////////////////////////////////////////////
// parse pretty-printed JSON from string
//