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59eebeca02
Ref: https://github.com/ruby/json/issues/655 Followup: https://github.com/ruby/json/issues/657 Assuming the generator might be used for fairly small documents we can start with a reasonable buffer size of the stack, and if we outgrow it, we can spill on the heap. In a way this is optimizing for micro-benchmarks, but there are valid use case for fiarly small JSON document in actual real world scenarios, so trashing the GC less in such case make sense. Before: ``` ruby 3.3.4 (2024-07-09 revisionbe1089c8ec) +YJIT [arm64-darwin23] Warming up -------------------------------------- Oj 518.700k i/100ms JSON reuse 483.370k i/100ms Calculating ------------------------------------- Oj 5.722M (± 1.8%) i/s (174.76 ns/i) - 29.047M in 5.077823s JSON reuse 5.278M (± 1.5%) i/s (189.46 ns/i) - 26.585M in 5.038172s Comparison: Oj: 5722283.8 i/s JSON reuse: 5278061.7 i/s - 1.08x slower ``` After: ``` ruby 3.3.4 (2024-07-09 revisionbe1089c8ec) +YJIT [arm64-darwin23] Warming up -------------------------------------- Oj 517.837k i/100ms JSON reuse 548.871k i/100ms Calculating ------------------------------------- Oj 5.693M (± 1.6%) i/s (175.65 ns/i) - 28.481M in 5.004056s JSON reuse 5.855M (± 1.2%) i/s (170.80 ns/i) - 29.639M in 5.063004s Comparison: Oj: 5692985.6 i/s JSON reuse: 5854857.9 i/s - 1.03x faster ```fe607f4806
117 lines
4.8 KiB
C++
117 lines
4.8 KiB
C++
#ifndef _GENERATOR_H_
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#define _GENERATOR_H_
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#include <math.h>
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#include <ctype.h>
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#include "ruby.h"
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/* This is the fallback definition from Ruby 3.4 */
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#ifndef RBIMPL_STDBOOL_H
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#if defined(__cplusplus)
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# if defined(HAVE_STDBOOL_H) && (__cplusplus >= 201103L)
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# include <cstdbool>
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# endif
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#elif defined(HAVE_STDBOOL_H)
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# include <stdbool.h>
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#elif !defined(HAVE__BOOL)
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typedef unsigned char _Bool;
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# define bool _Bool
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# define true ((_Bool)+1)
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# define false ((_Bool)+0)
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# define __bool_true_false_are_defined
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#endif
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#endif
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static char *fstrndup(const char *ptr, unsigned long len);
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/* ruby api and some helpers */
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typedef struct JSON_Generator_StateStruct {
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char *indent;
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long indent_len;
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char *space;
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long space_len;
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char *space_before;
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long space_before_len;
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char *object_nl;
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long object_nl_len;
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char *array_nl;
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long array_nl_len;
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long max_nesting;
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char allow_nan;
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char ascii_only;
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char script_safe;
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char strict;
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long depth;
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long buffer_initial_length;
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} JSON_Generator_State;
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#define GET_STATE_TO(self, state) \
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TypedData_Get_Struct(self, JSON_Generator_State, &JSON_Generator_State_type, state)
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#define GET_STATE(self) \
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JSON_Generator_State *state; \
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GET_STATE_TO(self, state)
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static VALUE mHash_to_json(int argc, VALUE *argv, VALUE self);
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static VALUE mArray_to_json(int argc, VALUE *argv, VALUE self);
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#ifdef RUBY_INTEGER_UNIFICATION
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static VALUE mInteger_to_json(int argc, VALUE *argv, VALUE self);
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#else
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static VALUE mFixnum_to_json(int argc, VALUE *argv, VALUE self);
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static VALUE mBignum_to_json(int argc, VALUE *argv, VALUE self);
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#endif
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static VALUE mFloat_to_json(int argc, VALUE *argv, VALUE self);
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static VALUE mString_included_s(VALUE self, VALUE modul);
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static VALUE mString_to_json(int argc, VALUE *argv, VALUE self);
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static VALUE mString_to_json_raw_object(VALUE self);
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static VALUE mString_to_json_raw(int argc, VALUE *argv, VALUE self);
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static VALUE mString_Extend_json_create(VALUE self, VALUE o);
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static VALUE mTrueClass_to_json(int argc, VALUE *argv, VALUE self);
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static VALUE mFalseClass_to_json(int argc, VALUE *argv, VALUE self);
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static VALUE mNilClass_to_json(int argc, VALUE *argv, VALUE self);
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static VALUE mObject_to_json(int argc, VALUE *argv, VALUE self);
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static void State_free(void *state);
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static VALUE cState_s_allocate(VALUE klass);
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static void generate_json(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static void generate_json_object(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static void generate_json_array(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static void generate_json_string(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static void generate_json_null(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static void generate_json_false(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static void generate_json_true(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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#ifdef RUBY_INTEGER_UNIFICATION
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static void generate_json_integer(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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#endif
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static void generate_json_fixnum(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static void generate_json_bignum(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static void generate_json_float(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj);
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static VALUE cState_partial_generate(VALUE self, VALUE obj, void (*func)(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj));
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static VALUE cState_generate(VALUE self, VALUE obj);
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static VALUE cState_from_state_s(VALUE self, VALUE opts);
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static VALUE cState_indent(VALUE self);
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static VALUE cState_indent_set(VALUE self, VALUE indent);
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static VALUE cState_space(VALUE self);
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static VALUE cState_space_set(VALUE self, VALUE space);
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static VALUE cState_space_before(VALUE self);
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static VALUE cState_space_before_set(VALUE self, VALUE space_before);
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static VALUE cState_object_nl(VALUE self);
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static VALUE cState_object_nl_set(VALUE self, VALUE object_nl);
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static VALUE cState_array_nl(VALUE self);
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static VALUE cState_array_nl_set(VALUE self, VALUE array_nl);
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static VALUE cState_max_nesting(VALUE self);
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static VALUE cState_max_nesting_set(VALUE self, VALUE depth);
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static VALUE cState_allow_nan_p(VALUE self);
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static VALUE cState_ascii_only_p(VALUE self);
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static VALUE cState_depth(VALUE self);
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static VALUE cState_depth_set(VALUE self, VALUE depth);
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static VALUE cState_script_safe(VALUE self);
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static VALUE cState_script_safe_set(VALUE self, VALUE depth);
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static VALUE cState_strict(VALUE self);
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static VALUE cState_strict_set(VALUE self, VALUE strict);
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static const rb_data_type_t JSON_Generator_State_type;
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#endif
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