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[heap_tracker] Use ankerl map instead of rb tree (#249)

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: eden-emu/eden#249
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2025-08-27 05:00:38 +02:00 • committed by crueter
parent 380cfcaeed
commit c9a3baab5d
Signed by untrusted user: crueter
GPG key ID: 425ACD2D4830EBC6
11 changed files with 103 additions and 305 deletions
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82
src/common/heap_tracker.h
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@ -1,93 +1,55 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <atomic>
#include <mutex>
#include <set>
#include <shared_mutex>
#include <ankerl/unordered_dense.h>
#include "common/host_memory.h"
#include "common/intrusive_red_black_tree.h"
namespace Common {
struct SeparateHeapMap {
Common::IntrusiveRedBlackTreeNode addr_node{};
Common::IntrusiveRedBlackTreeNode tick_node{};
VAddr vaddr{};
PAddr paddr{};
size_t size{};
size_t tick{};
MemoryPermission perm{};
bool is_resident{};
};
struct SeparateHeapMapAddrComparator {
static constexpr int Compare(const SeparateHeapMap& lhs, const SeparateHeapMap& rhs) {
if (lhs.vaddr < rhs.vaddr) {
return -1;
} else if (lhs.vaddr <= (rhs.vaddr + rhs.size - 1)) {
return 0;
} else {
return 1;
}
}
};
struct SeparateHeapMapTickComparator {
static constexpr int Compare(const SeparateHeapMap& lhs, const SeparateHeapMap& rhs) {
if (lhs.tick < rhs.tick) {
return -1;
} else if (lhs.tick > rhs.tick) {
return 1;
} else {
return SeparateHeapMapAddrComparator::Compare(lhs, rhs);
}
}
PAddr paddr{}; //8
std::size_t size{}; //8 (16)
std::size_t tick{}; //8 (24)
// 4 bits needed, sync with host_memory.h if needed
MemoryPermission perm : 4 = MemoryPermission::Read;
bool is_resident : 1 = false;
};
static_assert(sizeof(SeparateHeapMap) == 32); //half a cache line! good for coherency
class HeapTracker {
public:
explicit HeapTracker(Common::HostMemory& buffer);
~HeapTracker();
void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perm,
bool is_separate_heap);
void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perm, bool is_separate_heap);
void Unmap(size_t virtual_offset, size_t size, bool is_separate_heap);
void Protect(size_t virtual_offset, size_t length, MemoryPermission perm);
u8* VirtualBasePointer() {
inline u8* VirtualBasePointer() noexcept {
return m_buffer.VirtualBasePointer();
}
bool DeferredMapSeparateHeap(u8* fault_address);
bool DeferredMapSeparateHeap(size_t virtual_offset);
private:
using AddrTreeTraits =
Common::IntrusiveRedBlackTreeMemberTraitsDeferredAssert<&SeparateHeapMap::addr_node>;
using AddrTree = AddrTreeTraits::TreeType<SeparateHeapMapAddrComparator>;
using TickTreeTraits =
Common::IntrusiveRedBlackTreeMemberTraitsDeferredAssert<&SeparateHeapMap::tick_node>;
using TickTree = TickTreeTraits::TreeType<SeparateHeapMapTickComparator>;
AddrTree m_mappings{};
TickTree m_resident_mappings{};
// TODO: You may want to "fake-map" the first 2GB of 64-bit address space
// and dedicate it entirely to a recursive PTE mapping :)
// However Ankerl is way better than using an RB tree, in all senses
using AddrTree = ankerl::unordered_dense::map<VAddr, SeparateHeapMap>;
AddrTree m_mappings;
using TicksTree = ankerl::unordered_dense::map<VAddr, SeparateHeapMap>;
TicksTree m_resident_mappings;
private:
void SplitHeapMap(VAddr offset, size_t size);
void SplitHeapMapLocked(VAddr offset);
AddrTree::iterator GetNearestHeapMapLocked(VAddr offset);
void RebuildSeparateHeapAddressSpace();
inline HeapTracker::AddrTree::iterator GetNearestHeapMapLocked(VAddr offset) noexcept {
return m_mappings.find(offset);
}
private:
Common::HostMemory& m_buffer;
const s64 m_max_resident_map_count;
std::shared_mutex m_rebuild_lock{};
std::mutex m_lock{};
s64 m_map_count{};