//// Dis VM// File: garbage_collector.h// Author: arr// #ifndef _DISVM_SRC_VM_GARBAGE_COLLECTOR_H_#define _DISVM_SRC_VM_GARBAGE_COLLECTOR_H_ #include <cstdint>#include <mutex>#include <forward_list>#include <vector>#include <disvm.h> namespace disvm{    namespace runtime    {        // Default garbage collector        class default_garbage_collector_t final : public vm_garbage_collector_t        {        public:            default_garbage_collector_t(vm_t &vm);             ~default_garbage_collector_t();         public: // vm_garbage_collector_t            vm_memory_allocator_t get_allocator() const override;             void track_allocation(vm_alloc_t *alloc) override;             void enum_tracked_allocations(vm_alloc_callback_t callback) const override;             bool collect(std::vector<std::shared_ptr<const vm_thread_t>> threads) override;         private:            vm_t &_vm;             void *_mark_cxt;            std::size_t _collection_epoch;            mutable std::mutex _tracking_allocs_lock;            std::forward_list<vm_alloc_t *> _tracking_allocs;        };    }} #endif // _DISVM_SRC_VM_GARBAGE_COLLECTOR_H_