Atmosphere/libraries/libstratosphere/include/stratosphere/sf/sf_lmem_utility.hpp

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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stratosphere/sf/sf_common.hpp>
#include <stratosphere/lmem.hpp>
namespace ams::sf {
class ExpHeapMemoryResource : public MemoryResource {
private:
lmem::HeapHandle handle;
public:
constexpr ExpHeapMemoryResource() : handle() { /* ... */ }
constexpr explicit ExpHeapMemoryResource(lmem::HeapHandle h) : handle(h) { /* ... */ }
void Attach(lmem::HeapHandle h) {
AMS_ABORT_UNLESS(this->handle == lmem::HeapHandle());
this->handle = h;
}
lmem::HeapHandle GetHandle() const { return this->handle; }
private:
virtual void *AllocateImpl(size_t size, size_t alignment) override {
return lmem::AllocateFromExpHeap(this->handle, size, static_cast<int>(alignment));
}
virtual void DeallocateImpl(void *buffer, size_t size, size_t alignment) override {
return lmem::FreeToExpHeap(this->handle, buffer);
}
virtual bool IsEqualImpl(const MemoryResource &resource) const {
return this == std::addressof(resource);
}
};
class UnitHeapMemoryResource : public MemoryResource {
private:
lmem::HeapHandle handle;
public:
constexpr UnitHeapMemoryResource() : handle() { /* ... */ }
constexpr explicit UnitHeapMemoryResource(lmem::HeapHandle h) : handle(h) { /* ... */ }
void Attach(lmem::HeapHandle h) {
AMS_ABORT_UNLESS(this->handle == lmem::HeapHandle());
this->handle = h;
}
lmem::HeapHandle GetHandle() const { return this->handle; }
private:
virtual void *AllocateImpl(size_t size, size_t alignment) override {
AMS_ASSERT(size <= lmem::GetUnitHeapUnitSize(this->handle));
AMS_ASSERT(alignment <= static_cast<size_t>(lmem::GetUnitHeapAlignment(this->handle)));
return lmem::AllocateFromUnitHeap(this->handle);
}
virtual void DeallocateImpl(void *buffer, size_t size, size_t alignment) override {
return lmem::FreeToUnitHeap(this->handle, buffer);
}
virtual bool IsEqualImpl(const MemoryResource &resource) const {
return this == std::addressof(resource);
}
};
}