win: Gather memory information

util/win/process_info.h

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 31 matching lines @@
     //! \brief The base address of the loaded DLL.
     WinVMAddress dll_base;
 
     //! \brief The size of the module.
     WinVMSize size;
 
     //! \brief The module's timestamp.
     time_t timestamp;
   };
 
+  // \brief Contains information about a range of pages in the virtual address
+  //    space of a process.
+  struct MemoryInfo {
+    MemoryInfo();

[Mark Mentovai, 2015/09/26 03:36:36]

Is this form needed because of the vector?

[scottmg, 2015/09/26 04:08:53]

No, just habit. Removed.

+    explicit MemoryInfo(const MEMORY_BASIC_INFORMATION& mbi);
+    ~MemoryInfo();
+
+    //! \brief The base address of the region of pages.
+    WinVMAddress base_address;
+
+    //! \brief The size of the region beginning at base_address in bytes.
+    WinVMSize region_size;
+
+    //! \brief The base address of a range of pages that was allocated by
+    //!     `VirtualAlloc()`. The page pointed to base_address is within this
+    //!     range of pages.
+    WinVMAddress allocation_base;
+
+    //! \brief The state of the pages, one of `MEM_COMMIT`, `MEM_FREE`, or
+    //!     `MEM_RESERVE`.
+    uint32_t state;
+
+    //! \brief The memory protection option when this page was originally
+    //!     allocated. This will be `PAGE_EXECUTE`, `PAGE_EXECUTE_READ`, etc.
+    uint32_t allocation_protect;
+
+    //! \brief The current memoryprotection state. This will be `PAGE_EXECUTE`,
+    //!   `PAGE_EXECUTE_READ`, etc.
+    uint32_t protect;
+
+    //! \brief The type of the pages. This will be one of `MEM_IMAGE`,
+    //!     `MEM_MAPPED`, or `MEM_PRIVATE`.
+    uint32_t type;
+  };
+
   ProcessInfo();
   ~ProcessInfo();
 
   //! \brief Initializes this object with information about the given
   //!     \a process.
   //!
   //! This method must be called successfully prior to calling any other
   //! method in this class. This method may only be called once.
   //!
   //! \return `true` on success, `false` on failure with a message logged.
@@ skipping 23 matching lines @@
   //! \param[out] peb_size The size of the Process Environment Block.
   void Peb(WinVMAddress* peb_address, WinVMSize* peb_size) const;
 
   //! \brief Retrieves the modules loaded into the target process.
   //!
   //! The modules are enumerated in initialization order as detailed in the
   //!     Process Environment Block. The main executable will always be the
   //!     first element.
   bool Modules(std::vector<Module>* modules) const;
 
+  //! \brief Retrieves information about all pages mapped into the process.
+  const std::vector<MemoryInfo>& MemoryInformation() const;
+
  private:
   template <class Traits>
   friend bool GetProcessBasicInformation(HANDLE process,
                                          bool is_wow64,
                                          ProcessInfo* process_info,
                                          WinVMAddress* peb_address,
                                          WinVMSize* peb_size);
   template <class Traits>
   friend bool ReadProcessData(HANDLE process,
                               WinVMAddress peb_address_vmaddr,
                               ProcessInfo* process_info);
 
+  friend bool ReadMemoryInfo(HANDLE process, ProcessInfo* process_info);
+
   pid_t process_id_;
   pid_t inherited_from_process_id_;
   std::wstring command_line_;
   WinVMAddress peb_address_;
   WinVMSize peb_size_;
   std::vector<Module> modules_;
+  std::vector<MemoryInfo> memory_info_;
   bool is_64_bit_;
   bool is_wow64_;
   InitializationStateDcheck initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessInfo);
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_WIN_PROCESS_INFO_H_