--- a/src/jdk.jpackage/share/native/libapplauncher/WindowsPlatform.cpp	Mon Jan 07 16:43:30 2019 -0500
+++ b/src/jdk.jpackage/share/native/libapplauncher/WindowsPlatform.cpp	Tue Jan 08 07:37:14 2019 -0500
@@ -292,114 +292,6 @@
     return TRUE;
 }
 
-void WindowsPlatform::reactivateAnotherInstance() {
-    if (singleInstanceProcessId == 0) {
-        printf("Unable to reactivate another instance, PID is undefined");
-        return;
-    }
-    EnumWindows(&enumWindows, (LPARAM)singleInstanceProcessId);
-}
-
-// returns true if another instance is already running.
-// if false, we need to continue regular launch.
-bool WindowsPlatform::CheckForSingleInstance(TString name) {
-    if (SingleInstance::getInstance(name)->IsAnotherInstanceRunning()) {
-        // read PID
-        DWORD pid = SingleInstance::getInstance(name)->readPid();
-        if (pid != 0) {
-            singleInstanceProcessId = pid;
-            return true;
-        }
-    } else {
-        // it is the first intance
-        // write pid and continue regular launch
-        SingleInstance::getInstance(name)->writePid(GetCurrentProcessId());
-    }
-    return false;
-}
-
-SingleInstance::SingleInstance(TString& name_): BUF_SIZE(256), _name(name_),
-        _hMapFile(NULL), _pBuf(NULL) {
-    _mutex = CreateMutex(NULL, TRUE, name_.data());
-    _lastError = GetLastError();
-    _sharedMemoryName = _T("Local\\jpackage-") + _name;
-}
-
-SingleInstance::~SingleInstance() {
-    if (_pBuf != NULL) {
-        UnmapViewOfFile(_pBuf);
-        _pBuf = NULL;
-    }
-
-    if (_hMapFile != NULL) {
-        CloseHandle(_hMapFile);
-        _hMapFile = NULL;
-    }
-
-    if (_mutex != NULL) {
-        CloseHandle(_mutex);
-        _mutex = NULL;
-    }
-}
-
-bool SingleInstance::writePid(DWORD pid) {
-    _hMapFile = CreateFileMapping(
-                 INVALID_HANDLE_VALUE,
-                 NULL,
-                 PAGE_READWRITE,
-                 0,
-                 BUF_SIZE,
-                 _sharedMemoryName.data());
-
-    if (_hMapFile == NULL) {
-        return false;
-    }
-
-    _pBuf = (LPTSTR) MapViewOfFile(_hMapFile,
-                        FILE_MAP_ALL_ACCESS,
-                        0,
-                        0,
-                        BUF_SIZE);
-
-    if (_pBuf == NULL) {
-        CloseHandle(_hMapFile);
-        _hMapFile = NULL;
-        return false;
-    }
-
-    CopyMemory((PVOID)_pBuf, &pid, sizeof(DWORD));
-
-    return true;
-}
-
-DWORD SingleInstance::readPid() {
-    _hMapFile = OpenFileMapping(
-                   FILE_MAP_ALL_ACCESS,
-                   FALSE,
-                   _sharedMemoryName.data());
-
-    if (_hMapFile == NULL) {
-        return 0;
-    }
-
-   _pBuf = (LPTSTR) MapViewOfFile(_hMapFile,
-               FILE_MAP_ALL_ACCESS,
-               0,
-               0,
-               BUF_SIZE);
-
-    if (_pBuf == NULL) {
-        CloseHandle(_hMapFile);
-        _hMapFile = NULL;
-        return 0;
-    }
-
-    DWORD pid = 0;
-    CopyMemory(&pid, (PVOID)_pBuf,  sizeof(DWORD));
-
-    return pid;
-}
-
 TPlatformNumber WindowsPlatform::GetMemorySize() {
     SYSTEM_INFO si;
     GetSystemInfo(&si);