gc.h
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gc.h
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	#ifndef GC_H
	#define GC_H

	#include <types.h>
	#include <stddef.h>

	#define ROPE_FLAG (1ULL << 63)
	#define ROPE_DEPTH_SHIFT 56
	#define ROPE_DEPTH_MASK 0x7FULL
	#define ROPE_MAX_DEPTH 64
	#define ROPE_FLATTEN_THRESHOLD (32 * 1024)

	typedef struct {
	jsoff_t header;
	jsval_t left;
	jsval_t right;
	jsval_t cached;
	} rope_node_t;

	#define GC_FWD_LOAD_FACTOR 70
	#define GC_ROOTS_INITIAL_CAP 32
	#define GC_CB(ret, name, arg) ret (name)(void ctx, arg old)

	size_t js_gc_compact(ant_t *js);

	#define GC_CTX void *ctx
	#define GC_FWD_OFF GC_CB(jsoff_t, fwd_off, jsoff_t)
	#define GC_FWD_VAL GC_CB(jsval_t, fwd_val, jsval_t)
	#define GC_WEAK_OFF GC_CB(jsoff_t, weak_off, jsoff_t)
	#define GC_OP_VAL void (op_val)(void ctx, jsval_t *val)

	#define GC_FWD_ARGS GC_FWD_VAL, GC_CTX
	#define GC_RESERVE_ARGS ant_t *js, GC_FWD_OFF, GC_FWD_ARGS
	#define GC_UPDATE_ARGS ant_t *js, GC_FWD_OFF, GC_WEAK_OFF, GC_FWD_ARGS
	#define GC_OP_VAL_ARGS GC_OP_VAL, GC_CTX

	void js_gc_maybe(ant_t *js);
	void js_gc_throttle(bool enabled);

	#endif