33 lines
		
	
	
		
			615 B
		
	
	
	
		
			C++
		
	
	
			
		
		
	
	
			33 lines
		
	
	
		
			615 B
		
	
	
	
		
			C++
		
	
	
namespace factor {
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struct aging_space : bump_allocator {
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  object_start_map starts;
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  aging_space(cell size, cell start)
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      : bump_allocator(size, start), starts(size, start) {}
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  object* allot(cell size) {
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    if (here + size > end)
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      return NULL;
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    object* obj = bump_allocator::allot(size);
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    starts.record_object_start_offset(obj);
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    return obj;
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  }
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  cell next_object_after(cell scan) {
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    cell size = ((object*)scan)->size();
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    if (scan + size < here)
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      return scan + size;
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    return 0;
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  }
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  cell first_object() {
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    if (start != here)
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      return start;
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    return 0;
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  }
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};
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}
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