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📄 ABI.h(7 KB)
📄 AssertFrameRecognizer.h(1.79 KB)
📄 DynamicLoader.h(12.8 KB)
📄 ExecutionContext.h(23.91 KB)
📄 ExecutionContextScope.h(2.07 KB)
📄 InstrumentationRuntime.h(3.06 KB)
📄 InstrumentationRuntimeStopInfo.h(1.3 KB)
📄 JITLoader.h(2.15 KB)
📄 JITLoaderList.h(1.17 KB)
📄 Language.h(9.42 KB)
📄 LanguageRuntime.h(6.71 KB)
📄 Memory.h(4.66 KB)
📄 MemoryHistory.h(998 B)
📄 MemoryRegionInfo.h(4.76 KB)
📄 ModuleCache.h(2.42 KB)
📄 OperatingSystem.h(2.66 KB)
📄 PathMappingList.h(4.09 KB)
📄 Platform.h(42.4 KB)
📄 Process.h(110.8 KB)
📄 ProcessStructReader.h(3.27 KB)
📄 Queue.h(5.04 KB)
📄 QueueItem.h(5.24 KB)
📄 QueueList.h(3.32 KB)
📄 RegisterCheckpoint.h(1.89 KB)
📄 RegisterContext.h(7.73 KB)
📄 RegisterContextUnwind.h(9.73 KB)
📄 RegisterNumber.h(1.71 KB)
📄 RemoteAwarePlatform.h(3.76 KB)
📄 SectionLoadHistory.h(2.79 KB)
📄 SectionLoadList.h(2.36 KB)
📄 StackFrame.h(20.05 KB)
📄 StackFrameList.h(5.83 KB)
📄 StackFrameRecognizer.h(5.65 KB)
📄 StackID.h(3.16 KB)
📄 StopInfo.h(6.92 KB)
📄 StructuredDataPlugin.h(7.14 KB)
📄 SystemRuntime.h(11.83 KB)
📄 Target.h(49.2 KB)
📄 TargetList.h(7.75 KB)
📄 Thread.h(49.21 KB)
📄 ThreadCollection.h(1.63 KB)
📄 ThreadList.h(4.65 KB)
📄 ThreadPlan.h(24.41 KB)
📄 ThreadPlanBase.h(1.79 KB)
📄 ThreadPlanCallFunction.h(5.55 KB)
📄 ThreadPlanCallFunctionUsingABI.h(1.98 KB)
📄 ThreadPlanCallOnFunctionExit.h(1.56 KB)
📄 ThreadPlanCallUserExpression.h(2.21 KB)
📄 ThreadPlanPython.h(2.11 KB)
📄 ThreadPlanRunToAddress.h(2.04 KB)
📄 ThreadPlanShouldStopHere.h(5.02 KB)
📄 ThreadPlanStack.h(5.48 KB)
📄 ThreadPlanStepInRange.h(4.66 KB)
📄 ThreadPlanStepInstruction.h(1.86 KB)
📄 ThreadPlanStepOut.h(3.67 KB)
📄 ThreadPlanStepOverBreakpoint.h(1.84 KB)
📄 ThreadPlanStepOverRange.h(1.83 KB)
📄 ThreadPlanStepRange.h(3.69 KB)
📄 ThreadPlanStepThrough.h(1.97 KB)
📄 ThreadPlanStepUntil.h(2.12 KB)
📄 ThreadPlanTracer.h(2.32 KB)
📄 ThreadSpec.h(3.35 KB)
📄 UnixSignals.h(4.25 KB)
📄 Unwind.h(2.4 KB)
📄 UnwindAssembly.h(1.81 KB)
📄 UnwindLLDB.h(5.69 KB)

Editing: Memory.h

//===-- Memory.h ------------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLDB_TARGET_MEMORY_H
#define LLDB_TARGET_MEMORY_H

#include "lldb/Utility/RangeMap.h"
#include "lldb/lldb-private.h"
#include <map>
#include <mutex>
#include <vector>

namespace lldb_private {
// A class to track memory that was read from a live process between
// runs.
class MemoryCache {
public:
  // Constructors and Destructors
  MemoryCache(Process &process);

~MemoryCache();

void Clear(bool clear_invalid_ranges = false);

void Flush(lldb::addr_t addr, size_t size);

size_t Read(lldb::addr_t addr, void *dst, size_t dst_len, Status &error);

uint32_t GetMemoryCacheLineSize() const { return m_L2_cache_line_byte_size; }

void AddInvalidRange(lldb::addr_t base_addr, lldb::addr_t byte_size);

bool RemoveInvalidRange(lldb::addr_t base_addr, lldb::addr_t byte_size);

// Allow external sources to populate data into the L1 memory cache
  void AddL1CacheData(lldb::addr_t addr, const void *src, size_t src_len);

void AddL1CacheData(lldb::addr_t addr,
                      const lldb::DataBufferSP &data_buffer_sp);

protected:
  typedef std::map<lldb::addr_t, lldb::DataBufferSP> BlockMap;
  typedef RangeVector<lldb::addr_t, lldb::addr_t, 4> InvalidRanges;
  typedef Range<lldb::addr_t, lldb::addr_t> AddrRange;
  // Classes that inherit from MemoryCache can see and modify these
  std::recursive_mutex m_mutex;
  BlockMap m_L1_cache; // A first level memory cache whose chunk sizes vary that
                       // will be used only if the memory read fits entirely in
                       // a chunk
  BlockMap m_L2_cache; // A memory cache of fixed size chinks
                       // (m_L2_cache_line_byte_size bytes in size each)
  InvalidRanges m_invalid_ranges;
  Process &m_process;
  uint32_t m_L2_cache_line_byte_size;

private:
  MemoryCache(const MemoryCache &) = delete;
  const MemoryCache &operator=(const MemoryCache &) = delete;
};

class AllocatedBlock {
public:
  AllocatedBlock(lldb::addr_t addr, uint32_t byte_size, uint32_t permissions,
                 uint32_t chunk_size);

~AllocatedBlock();

lldb::addr_t ReserveBlock(uint32_t size);

bool FreeBlock(lldb::addr_t addr);

lldb::addr_t GetBaseAddress() const { return m_range.GetRangeBase(); }

uint32_t GetByteSize() const { return m_range.GetByteSize(); }

uint32_t GetPermissions() const { return m_permissions; }

uint32_t GetChunkSize() const { return m_chunk_size; }

bool Contains(lldb::addr_t addr) const {
    return m_range.Contains(addr);
  }

protected:
  uint32_t TotalChunks() const { return GetByteSize() / GetChunkSize(); }

uint32_t CalculateChunksNeededForSize(uint32_t size) const {
    return (size + m_chunk_size - 1) / m_chunk_size;
  }
  // Base address of this block of memory 4GB of chunk should be enough.
  Range<lldb::addr_t, uint32_t> m_range;
  // Permissions for this memory (logical OR of lldb::Permissions bits)
  const uint32_t m_permissions;
  // The size of chunks that the memory at m_addr is divied up into.
  const uint32_t m_chunk_size;
  // A sorted list of free address ranges.
  RangeVector<lldb::addr_t, uint32_t> m_free_blocks;
  // A sorted list of reserved address.
  RangeVector<lldb::addr_t, uint32_t> m_reserved_blocks;
};

// A class that can track allocated memory and give out allocated memory
// without us having to make an allocate/deallocate call every time we need
// some memory in a process that is being debugged.
class AllocatedMemoryCache {
public:
  // Constructors and Destructors
  AllocatedMemoryCache(Process &process);

~AllocatedMemoryCache();

void Clear();

lldb::addr_t AllocateMemory(size_t byte_size, uint32_t permissions,
                              Status &error);

bool DeallocateMemory(lldb::addr_t ptr);

protected:
  typedef std::shared_ptr<AllocatedBlock> AllocatedBlockSP;

AllocatedBlockSP AllocatePage(uint32_t byte_size, uint32_t permissions,
                                uint32_t chunk_size, Status &error);

// Classes that inherit from MemoryCache can see and modify these
  Process &m_process;
  std::recursive_mutex m_mutex;
  typedef std::multimap<uint32_t, AllocatedBlockSP> PermissionsToBlockMap;
  PermissionsToBlockMap m_memory_map;

private:
  AllocatedMemoryCache(const AllocatedMemoryCache &) = delete;
  const AllocatedMemoryCache &operator=(const AllocatedMemoryCache &) = delete;
};

} // namespace lldb_private

#endif // LLDB_TARGET_MEMORY_H

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Editing: Memory.h

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