itkMemoryUsageObserver.h Source File

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 /*=========================================================================
  *
  *  Copyright Insight Software Consortium
  *
  *  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.txt
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  *
  *=========================================================================*/
 #ifndef __itkMemoryUsageObserver_h
 #define __itkMemoryUsageObserver_h
 
 #include "itkConfigure.h"
 #include "itkMacro.h"
 #include "itkObject.h"
 #include "itkObjectFactory.h"
 #include "itkIntTypes.h"
 
 #if defined( WIN32 ) || defined( _WIN32 )
   #include <windows.h>
   #define SUPPORT_TOOLHELP32
   #if defined( SUPPORT_TOOLHELP32 )
 typedef LONG NTSTATUS;
   #endif
 #endif
 
 namespace itk
 {
 class ITKCommon_EXPORT MemoryUsageObserverBase
 {
 public:
   typedef SizeValueType MemoryLoadType;
 
   virtual ~MemoryUsageObserverBase();
 
   virtual MemoryLoadType GetMemoryUsage() = 0;
 };
 
 #if defined( WIN32 ) || defined( _WIN32 )
 class ITKCommon_EXPORT WindowsMemoryUsageObserver:public MemoryUsageObserverBase
 {
 public:
   WindowsMemoryUsageObserver();
   virtual ~WindowsMemoryUsageObserver();
 
   virtual MemoryLoadType GetMemoryUsage();
 
 protected:
 #if defined( SUPPORT_TOOLHELP32 )
   typedef NTSTATUS ( WINAPI * PZwQuerySystemInformation )(UINT, PVOID, ULONG, PULONG);
 
   // handle ntdll.dll library
   HMODULE m_hNTLib;
   // Windows native API function to query system information
   PZwQuerySystemInformation ZwQuerySystemInformation;
 #endif // defined(SUPPORT_TOOLHELP32)
 };
 #endif // defined(WIN32) || defined(_WIN32)
 
 #ifdef linux
 class ITKCommon_EXPORT LinuxMemoryUsageObserver:public MemoryUsageObserverBase
 {
 public:
   virtual ~LinuxMemoryUsageObserver();
   virtual MemoryLoadType GetMemoryUsage();
 };
 #endif // linux
 
 
 #if defined( __APPLE__ )
 class ITKCommon_EXPORT MacOSXMemoryUsageObserver:public MemoryUsageObserverBase
 {
 public:
   virtual ~MacOSXMemoryUsageObserver();
   virtual MemoryLoadType GetMemoryUsage();
 };
 #endif // Mac OS X
 
 
 #if defined( __SUNPRO_CC ) || defined ( __sun__ )
 class ITKCommon_EXPORT SunSolarisMemoryUsageObserver:public MemoryUsageObserverBase
 {
 public:
   virtual ~SunSolarisMemoryUsageObserver();
   virtual MemoryLoadType GetMemoryUsage();
 };
 #endif // Sun Solaris
 
 
 #if !defined( WIN32 ) && !defined( _WIN32 )
 class ITKCommon_EXPORT SysResourceMemoryUsageObserver:public MemoryUsageObserverBase
 {
 public:
   virtual ~SysResourceMemoryUsageObserver();
   virtual MemoryLoadType GetMemoryUsage();
 };
 #if !defined( __APPLE__ ) && !defined( __SUNPRO_CC ) && !defined ( __sun__ ) && !defined( __FreeBSD__ ) \
   && !defined( __OpenBSD__ )
 
 
 
 
 
 
 