gc.h
899dad6b8a9etype-hints-typescript

gc.h
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			#ifndef ANT_GC_H
			#define ANT_GC_H

			#include "internal.h"
			#include <stdbool.h>
			#include <stdint.h>

			#define GC_MIN_TICK 1024
			#define GC_NURSERY_THRESHOLD 32768
			#define GC_FORCE_INTERVAL_MS 50
			#define GC_MAJOR_EVERY_N_MINOR 8

			#define GC_OBJ_TYPE_MASK (JS_TPFLG(T_OBJ) \
			\| JS_TPFLG(T_ARR) \
			\| JS_TPFLG(T_PROMISE) \
			\| JS_TPFLG(T_GENERATOR))

			typedef struct gc_func_mark_profile {
			bool enabled;
			uint64_t collections;
			uint64_t func_visits;
			uint64_t child_edges;
			uint64_t const_slots;
			uint64_t time_ns;
			} gc_func_mark_profile_t;

			void gc_run(ant_t *js);
			void gc_run_minor(ant_t *js);
			void gc_maybe(ant_t *js);
			void gc_remember_add(ant_t js, ant_object_t obj);

			size_t gc_live_major_threshold(ant_t *js);
			size_t gc_pool_major_threshold(ant_t *js);

			void gc_func_mark_profile_enable(bool enabled);
			void gc_func_mark_profile_reset(void);

			extern bool gc_disabled;
			gc_func_mark_profile_t gc_func_mark_profile_get(void);

			static inline void gc_write_barrier(ant_t js, ant_object_t writer_obj, ant_value_t new_val) {
			if (writer_obj->generation != 1 \|\| new_val <= NANBOX_PREFIX) return;
			uint8_t type = (new_val >> NANBOX_TYPE_SHIFT) & NANBOX_TYPE_MASK;
			if (type == T_FUNC) gc_remember_add(js, writer_obj);
			else if ((1u << type) & GC_OBJ_TYPE_MASK) {
			ant_object_t ref = (ant_object_t )(uintptr_t)(new_val & NANBOX_DATA_MASK);
			if (ref && ref->generation == 0) gc_remember_add(js, writer_obj);
			}
			}

			#endif