modules/jdk.packager/src/main/native/library/common/WindowsPlatform.h

*** 1,7 ****
  /*
!  * Copyright (c) 2014, 2016, Oracle and/or its affiliates.
   * All rights reserved. Use is subject to license terms.
   *
   * This file is available and licensed under the following license:
   *
   * Redistribution and use in source and binary forms, with or without
--- 1,7 ----
  /*
!  * Copyright (c) 2014, 2017, Oracle and/or its affiliates.
   * All rights reserved. Use is subject to license terms.
   *
   * This file is available and licensed under the following license:
   *
   * Redistribution and use in source and binary forms, with or without
*** 42,51 ****
--- 42,88 ----
  #include "JavaUserPreferences.h"
  
  #include <Windows.h>
  
  
+ // the class is used to create and detect single instance of user application
+ class SingleInstance {
+ private:
+     const int BUF_SIZE;
+ 
+     DWORD  _lastError;
+     HANDLE _mutex;
+     TString _name;
+     TString _sharedMemoryName;
+     HANDLE _hMapFile;
+     LPCTSTR _pBuf;
+ 
+     SingleInstance(): BUF_SIZE(0) {}
+ 
+     SingleInstance(TString& name_);
+ 
+ public:
+     static SingleInstance* getInstance(TString& name) {
+         static SingleInstance* result = NULL;
+         
+         if (result == NULL) {
+             result = new SingleInstance(name);
+         }
+         
+         return result;
+     }
+ 
+     ~SingleInstance();
+ 
+     bool IsAnotherInstanceRunning() {
+         return (ERROR_ALREADY_EXISTS == _lastError);
+     }
+ 
+     bool writePid(DWORD pid);
+     DWORD readPid();
+ };
+ 
  #pragma warning( push )
  #pragma warning( disable : 4250 ) // C4250 - 'class1' : inherits 'class2::member'
  class WindowsPlatform : virtual public Platform, GenericPlatform {
  private:
      DWORD FMainThread;
*** 78,88 ****
--- 115,127 ----
      virtual std::vector<TString> GetLibraryImports(const TString FileName);
      virtual std::vector<TString> FilterOutRuntimeDependenciesForPlatform(std::vector<TString> Imports);
  
      virtual Process* CreateProcess();
      
+     virtual void reactivateAnotherInstance();
      virtual bool IsMainThread();
+     virtual bool CheckForSingleInstance(TString Name);
      virtual TPlatformNumber GetMemorySize();
  
  #ifdef DEBUG
      virtual bool IsNativeDebuggerPresent();
      virtual int GetProcessID();