ladybird/Kernel/VM/AnonymousVMObject.cpp
Andreas Kling b67200dfea Kernel: Use a FixedArray for VMObject::m_physical_pages
This makes VMObject 8 bytes smaller since we can use the array size as
the page count.

The size() is now also computed from the page count instead of being
a separate value. This makes sizes always be a multiple of PAGE_SIZE,
which is sane.
2019-08-07 20:12:50 +02:00

40 lines
994 B
C++

#include <Kernel/VM/AnonymousVMObject.h>
#include <Kernel/VM/PhysicalPage.h>
NonnullRefPtr<AnonymousVMObject> AnonymousVMObject::create_with_size(size_t size)
{
return adopt(*new AnonymousVMObject(size));
}
NonnullRefPtr<AnonymousVMObject> AnonymousVMObject::create_for_physical_range(PhysicalAddress paddr, size_t size)
{
return adopt(*new AnonymousVMObject(paddr, size));
}
AnonymousVMObject::AnonymousVMObject(size_t size)
: VMObject(size)
{
}
AnonymousVMObject::AnonymousVMObject(PhysicalAddress paddr, size_t size)
: VMObject(size)
{
ASSERT(paddr.page_base() == paddr.get());
for (size_t i = 0; i < page_count(); ++i)
physical_pages()[i] = PhysicalPage::create(paddr.offset(i * PAGE_SIZE), false, false);
}
AnonymousVMObject::AnonymousVMObject(const AnonymousVMObject& other)
: VMObject(other)
{
}
AnonymousVMObject::~AnonymousVMObject()
{
}
NonnullRefPtr<VMObject> AnonymousVMObject::clone()
{
return adopt(*new AnonymousVMObject(*this));
}