Jean Boussier d188a6883f [ruby/json] Implement a fast path for integer parsing ... `rb_cstr2inum` isn't very fast because it handles tons of different scenarios, and also require a NULL terminated string which forces us to copy the number into a secondary buffer. But since the parser already computed the length, we can much more cheaply do this with a very simple function as long as the number is small enough to fit into a native type (`long long`). If the number is too long, we can fallback to the `rb_cstr2inum` slowpath. Before: ``` == Parsing citm_catalog.json (1727030 bytes) ruby 3.4.0dev (2024-11-06T07:59:09Z precompute-hash-wh.. 7943f98a8a) +YJIT +PRISM [arm64-darwin24] Warming up -------------------------------------- json 40.000 i/100ms oj 35.000 i/100ms Oj::Parser 45.000 i/100ms rapidjson 38.000 i/100ms Calculating ------------------------------------- json 425.941 (± 1.9%) i/s (2.35 ms/i) - 2.160k in 5.072833s oj 349.617 (± 1.7%) i/s (2.86 ms/i) - 1.750k in 5.006953s Oj::Parser 464.767 (± 1.7%) i/s (2.15 ms/i) - 2.340k in 5.036381s rapidjson 382.413 (± 2.4%) i/s (2.61 ms/i) - 1.938k in 5.070757s Comparison: json: 425.9 i/s Oj::Parser: 464.8 i/s - 1.09x faster rapidjson: 382.4 i/s - 1.11x slower oj: 349.6 i/s - 1.22x slower ``` After: ``` == Parsing citm_catalog.json (1727030 bytes) ruby 3.4.0dev (2024-11-06T07:59:09Z precompute-hash-wh.. 7943f98a8a) +YJIT +PRISM [arm64-darwin24] Warming up -------------------------------------- json 46.000 i/100ms oj 33.000 i/100ms Oj::Parser 45.000 i/100ms rapidjson 39.000 i/100ms Calculating ------------------------------------- json 462.332 (± 3.2%) i/s (2.16 ms/i) - 2.346k in 5.080504s oj 351.140 (± 1.1%) i/s (2.85 ms/i) - 1.782k in 5.075616s Oj::Parser 473.500 (± 1.3%) i/s (2.11 ms/i) - 2.385k in 5.037695s rapidjson 395.052 (± 3.5%) i/s (2.53 ms/i) - 1.989k in 5.042275s Comparison: json: 462.3 i/s Oj::Parser: 473.5 i/s - same-ish: difference falls within error rapidjson: 395.1 i/s - 1.17x slower oj: 351.1 i/s - 1.32x slower ``` 3a4dc9e1b4		2024-11-06 23:31:30 +01:00
..
depend	Update depend files	2024-11-05 18:00:36 +01:00
extconf.rb	[ruby/json] Categorize deprecated warning	2024-11-06 23:31:30 +01:00
parser.c	[ruby/json] Implement a fast path for integer parsing	2024-11-06 23:31:30 +01:00
parser.rl	[ruby/json] Implement a fast path for integer parsing	2024-11-06 23:31:30 +01:00
prereq.mk	ext/json/parser/prereq.mk: fix warnings for code generated by ragel	2021-05-18 23:26:03 +09:00