48 lines
902 B
C++
48 lines
902 B
C++
#pragma once
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#include <glacier/memory/unique_ptr.h>
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#include <stdint.h>
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#include "memory/constants.h"
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#include "memory/slab_allocator.h"
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class KernelHeap {
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public:
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KernelHeap();
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void InitializeSlabAllocators();
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void* Allocate(uint64_t size);
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void Free(void* address);
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static void DumpDebugData();
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private:
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uint64_t next_addr_ = kKernelBuddyHeapStart;
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uint64_t upper_bound_ = kKernelBuddyHeapEnd;
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uint64_t alloc_count_ = 0;
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SlabAllocator slab_8_{8};
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SlabAllocator slab_16_{16};
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SlabAllocator slab_32_{32};
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// Distribution collection for the purpose of investigating a slab allocator.
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// 0: 0-8B
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// 1: 8B-16B
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// 2: 16B-32B
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// 3: 32B-64B
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// 4: 64B-128B
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// 5: 128B-256B
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// 6: 256B-512B
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// 7: 512B-1KiB
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// 8: 1KiB-2KiB
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// 9: 2KiB-4KiB
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// 10: 4KiB+
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uint64_t distributions[11];
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void RecordSize(uint64_t size);
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void DumpDebugDataInternal();
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};
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