37 lines
899 B
C++
37 lines
899 B
C++
#include "memory/kernel_heap.h"
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#include "debug/debug.h"
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#include "memory/paging_util.h"
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namespace {
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static KernelHeap* gKernelHeap = nullptr;
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KernelHeap& GetKernelHeap() {
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if (!gKernelHeap) {
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panic("Kernel Heap not initialized.");
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}
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return *gKernelHeap;
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}
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} // namespace
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KernelHeap::KernelHeap(uint64_t lower_bound, uint64_t upper_bound)
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: next_addr_(lower_bound), upper_bound_(upper_bound) {
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gKernelHeap = this;
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}
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void* KernelHeap::Allocate(uint64_t size) {
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if (next_addr_ + size >= upper_bound_) {
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panic("Kernel Heap Overrun");
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}
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EnsureResident(next_addr_, size);
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uint64_t address = next_addr_;
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next_addr_ += size;
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return reinterpret_cast<void*>(address);
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}
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void* operator new(uint64_t size) { return GetKernelHeap().Allocate(size); }
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void* operator new[](uint64_t size) { return GetKernelHeap().Allocate(size); }
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void operator delete(void*, uint64_t) {}
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