29 lines
817 B
D
29 lines
817 B
D
module ecs.entity_allocator;
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import ecs.manager;
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import std.experimental.allocator.mallocator : Mallocator, AlignedMallocator;
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import std.experimental.allocator;
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struct EntityAllocator
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{
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void* next_block;
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void* getBlock()
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{
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if(next_block is null)allocBlock();
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void* ret = next_block;
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next_block = *cast(void**)next_block;
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return ret;
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}
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private void allocBlock()
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{
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next_block = cast(void*)AlignedMallocator.instance.alignedAllocate(EntityManager.page_size * EntityManager.pages_in_block, EntityManager.page_size);
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foreach(i;0..EntityManager.pages_in_block-1)
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{
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void** pointer = cast(void**)(next_block + i * EntityManager.page_size);
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*pointer = next_block + (i+1) * EntityManager.page_size;
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}
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}
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}
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