Mergul
d3f7593afc
-Multithreaded IDManager.getNewID() *use implementation with free IDs stack (instead of classic pool) -support for multiple UpdatePasses. Passes are added by name, and must be called between begin() end() functions. -removed mutex from addEntity() -commit() function added. Used to commit all changes made while update() call. Called automatically by begin() end() functions.
43 lines
1.1 KiB
D
43 lines
1.1 KiB
D
module ecs.block_allocator;
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import ecs.manager;
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import std.experimental.allocator;
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import std.experimental.allocator.mallocator : AlignedMallocator, Mallocator;
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struct BlockAllocator//(uint block_size, uint blocks_in_allocation)
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{
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private uint block_size;
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private uint blocks_in_allocation;
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void* next_block = null;
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void* getBlock()
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{
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if (next_block is null)
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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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void freeBlock(void* block)
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{
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*cast(void**)block = next_block;
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next_block = block;
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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(
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block_size * blocks_in_allocation, block_size);
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foreach (i; 0 .. blocks_in_allocation - 1)
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{
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void** pointer = cast(void**)(next_block + i * block_size);
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*pointer = next_block + (i + 1) * block_size;
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}
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void** pointer = cast(void**)(
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next_block + (blocks_in_allocation - 1) * block_size);
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*pointer = null;
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}
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}
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