source: src/examples/gc_no_raii/internal/state.h@ e47f529

#pragma once

#include <stddef.h>
#include <stdint.h>

#include "tools.h"

struct gc_state
{
        bool is_initialized;
        uint8_t from_code;
        struct gc_memory_pool* to_space;
        struct gc_memory_pool* from_space;

        size_t total_space;
        size_t used_space;

        const struct memory_pool*       pools_table;
        size_t                          pools_table_count;
};

void gc_state_ctor(gc_state* state);

inline gc_state* get_state()
{
        static gc_state s;
        if(!s.is_initialized) gc_state_ctor(s);
        return &s;
}

inline bool needs_collect(gc_state* state)
{
        return state->used_space * 2 > state->total_space;
}

void gc_collect(gc_state* state);

void* gc_try_allocate(gc_state* state, size_t size);

void gc_allocate_pool(gc_state* state);

bool gc_is_in_heap(const gc_state* state, void* address);

bool gc_is_in_to_space(const gc_state* state, void* address);

inline uint8_t gc_from_space_code(const gc_state* state)
{
        return state->from_code;
}

struct gc_object_header* gc_get_object_for_ref(gc_state* state, void*);

inline void gc_register_allocation(gc_state* state, size_t size)
{
        state->used_space += size;
}