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5d491fa1cd
This is a freelist allocator with static size classes that works as a complement to the generic kmalloc(). It's a lot faster than kmalloc() since allocation just means popping from the freelist. It's also significantly more compact when there are a lot of objects smaller than the minimum kmalloc chunk size (32 bytes.) This patch enables it for the Region and PhysicalPage classes. In the PhysicalPage (8 bytes) case, it's a huge improvement since we no longer waste 75% of the storage allocated. There are also a number of ways this can be improved, so let's keep working on it going forward.
18 lines
668 B
C++
18 lines
668 B
C++
#pragma once
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#include <AK/Function.h>
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#include <AK/Types.h>
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class JsonObjectSerializer;
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void* slab_alloc(size_t slab_size);
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void slab_dealloc(void*, size_t slab_size);
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void slab_alloc_init();
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void slab_alloc_stats(Function<void(size_t slab_size, size_t allocated, size_t free)>);
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#define MAKE_SLAB_ALLOCATED(type) \
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public: \
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void* operator new(size_t) { return slab_alloc(sizeof(type)); } \
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void operator delete(void* ptr) { slab_dealloc(ptr, sizeof(type)); } \
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\
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private:
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