namespace factor { #if defined(WINDOWS) && defined(FACTOR_64) const cell seh_area_size = 1024; #else const cell seh_area_size = 0; #endif struct code_heap { /* The actual memory area */ segment* seg; /* Memory area reserved for safepoint guard page */ cell safepoint_page; /* Memory area reserved for SEH. Only used on Windows */ char* seh_area; /* Memory allocator */ free_list_allocator* allocator; std::set all_blocks; /* Keys are blocks which need to be initialized by initialize_code_block(). Values are literal tables. Literal table arrays are GC roots until the time the block is initialized, after which point they are discarded. */ std::map uninitialized_blocks; /* Code blocks which may reference objects in the nursery */ std::set points_to_nursery; /* Code blocks which may reference objects in aging space or the nursery */ std::set points_to_aging; explicit code_heap(cell size); ~code_heap(); void write_barrier(code_block* compiled); void clear_remembered_set(); bool uninitialized_p(code_block* compiled); void free(code_block* compiled); void flush_icache(); void set_safepoint_guard(bool locked); void verify_all_blocks_set(); void initialize_all_blocks_set(); void sweep(); code_block* code_block_for_address(cell address); cell frame_predecessor(cell frame_top); bool safepoint_p(cell addr) { cell page_mask = ~(getpagesize() - 1); return (addr & page_mask) == safepoint_page; } }; }