mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
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98 lines
3.7 KiB
C++
98 lines
3.7 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stratosphere.hpp>
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namespace ams::lmem::impl {
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constexpr inline u32 ExpHeapMagic = util::ReverseFourCC<'E','X','P','H'>::Code;
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constexpr inline u32 FrameHeapMagic = util::ReverseFourCC<'F','R','M','H'>::Code;
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constexpr inline u32 UnitHeapMagic = util::ReverseFourCC<'U','N','T','H'>::Code;
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class ScopedHeapLock {
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NON_COPYABLE(ScopedHeapLock);
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NON_MOVEABLE(ScopedHeapLock);
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private:
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HeapHandle m_handle;
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public:
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explicit ScopedHeapLock(HeapHandle h) : m_handle(h) {
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if (m_handle->option & CreateOption_ThreadSafe) {
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os::LockSdkMutex(std::addressof(m_handle->mutex));
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}
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}
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~ScopedHeapLock() {
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if (m_handle->option & CreateOption_ThreadSafe) {
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os::UnlockSdkMutex(std::addressof(m_handle->mutex));
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}
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}
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};
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ALWAYS_INLINE MemoryRange MakeMemoryRange(void *address, size_t size) {
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return MemoryRange{ .address = reinterpret_cast<uintptr_t>(address), .size = size };
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}
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ALWAYS_INLINE void *GetHeapStartAddress(HeapHandle handle) {
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return handle->heap_start;
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}
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ALWAYS_INLINE size_t GetPointerDifference(const void *start, const void *end) {
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return reinterpret_cast<uintptr_t>(end) - reinterpret_cast<uintptr_t>(start);
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}
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constexpr ALWAYS_INLINE size_t GetPointerDifference(uintptr_t start, uintptr_t end) {
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return end - start;
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}
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void InitializeHeapHead(HeapHead *out, u32 magic, void *start, void *end, u32 option);
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void FinalizeHeap(HeapHead *heap);
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bool ContainsAddress(HeapHandle handle, const void *address);
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size_t GetHeapTotalSize(HeapHandle handle);
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/* Debug Fill */
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u32 GetDebugFillValue(FillType type);
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u32 SetDebugFillValue(FillType type, u32 value);
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inline void FillMemory(void *dst, u32 fill_value, size_t size) {
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/* All heap blocks must be at least 32-bit aligned. */
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AMS_ASSERT(util::IsAligned(reinterpret_cast<uintptr_t>(dst), alignof(u32)));
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AMS_ASSERT(util::IsAligned(size, sizeof(u32)));
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for (size_t i = 0; i < size / sizeof(fill_value); i++) {
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reinterpret_cast<u32 *>(dst)[i] = fill_value;
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}
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}
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inline void FillUnallocatedMemory(HeapHead *heap, void *address, size_t size) {
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if (heap->option & CreateOption_DebugFill) {
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FillMemory(address, impl::GetDebugFillValue(FillType_Unallocated), size);
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}
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}
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inline void FillAllocatedMemory(HeapHead *heap, void *address, size_t size) {
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if (heap->option & CreateOption_ZeroClear) {
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FillMemory(address, 0, size);
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} else if (heap->option & CreateOption_DebugFill) {
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FillMemory(address, impl::GetDebugFillValue(FillType_Allocated), size);
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}
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}
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inline void FillFreedMemory(HeapHead *heap, void *address, size_t size) {
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if (heap->option & CreateOption_DebugFill) {
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FillMemory(address, impl::GetDebugFillValue(FillType_Freed), size);
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}
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}
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} |