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