MemoryRegionInfoCache.h

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//===----------------------------------------------------------------------===//
//
// 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_MEMORYREGIONINFOCACHE_H
#define LLDB_TARGET_MEMORYREGIONINFOCACHE_H
 
#include "lldb/Target/MemoryRegionInfo.h"
#include "lldb/Utility/Locked.h"
 
#include <map>
#include <mutex>
#include <optional>
 
namespace lldb_private {
class MemoryRegionInfoCache {
public:
  MemoryRegionInfoCache() = default;
 
  /// Remove all cached entries.  Should be called whenever
  /// Process resumes execution of the inferior.
  void Clear();
 
  /// Return a MemoryRegionInfo that covers \p load_addr,
  /// returns empty optional if there is no entry.
  std::optional<MemoryRegionInfo> GetMemoryRegion(lldb::addr_t load_addr);
 
  /// Add a MemoryRegionInfo to the collection.
  void AddRegion(const MemoryRegionInfo &region_info);
 
  size_t GetSize();
 
private:
  Guarded<std::map<lldb::addr_t, MemoryRegionInfo>, std::mutex> m_region_infos;
};
} // namespace lldb_private
 
#endif // LLDB_TARGET_MEMORYREGIONINFOCACHE_H