Examples of ca.eandb.jdcp.worker.policy.win32.Kernel32$SYSTEM_POWER_STATUS

Package ca.eandb.jdcp.worker.policy.win32

Examples of ca.eandb.jdcp.worker.policy.win32.Kernel32$SYSTEM_POWER_STATUS

com.sun.jna.examples.win32.Kernel32
This structure is non-trivial since it is a pattern stamped into a large block of result memory rather than something that stands alone or is used for input.


  /**
   * Updates the state of this <code>CourtesyMonitor</code>.
   */
  public synchronized void update() {
    SYSTEM_POWER_STATUS status = new SYSTEM_POWER_STATUS();
    Kernel32.INSTANCE.GetSystemPowerStatus(status);


    switch (status.ACLineStatus) {
    case 0: // battery
      allow(!requireAC

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      // The window needs to be made visible once to set its WindowProc.
      msgWindow.setVisible(true);
      msgWindow.setVisible(false);


      // Get a handle to the window.
      HWND hwnd = new HWND();
      hwnd.setPointer(Native.getWindowPointer(msgWindow));


      // Set the WindowProc so that this instance receives window
      // messages.
      prevWndProc = User32.INSTANCE.SetWindowLong(hwnd,
          User32.GWL_WNDPROC, this);

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        private HANDLE port;
        private Map fileMap = new HashMap();
        private Map handleMap = new HashMap();
        
        private void handleChanges(FileInfo finfo) throws IOException {
            Kernel32 klib = Kernel32.INSTANCE;
            FILE_NOTIFY_INFORMATION fni = finfo.info;
            // Need an explicit read, since data was filled in asynchronously
            fni.read();
            do {
                FileEvent event = null;
                File file = new File(finfo.file, fni.getFilename());
                switch(fni.Action) {
                case Kernel32.FILE_ACTION_MODIFIED:
                    event = new FileEvent(file, FILE_MODIFIED); break;
                case Kernel32.FILE_ACTION_ADDED:
                    event = new FileEvent(file, FILE_CREATED); break;
                case Kernel32.FILE_ACTION_REMOVED:
                    event = new FileEvent(file, FILE_DELETED); break;
                case Kernel32.FILE_ACTION_RENAMED_OLD_NAME:
                    event = new FileEvent(file, FILE_NAME_CHANGED_OLD); break;
                case Kernel32.FILE_ACTION_RENAMED_NEW_NAME:
                    event = new FileEvent(file, FILE_NAME_CHANGED_NEW); break;
                default:
                    // TODO: other actions...
                    System.err.println("Unrecognized file action '" + fni.Action + "'");
                }
                if (event != null)
                    notify(event);
                fni = fni.next();
            } while (fni != null);
            // Trigger the next read
            if (!finfo.file.exists()) {
                unwatch(finfo.file);
                return;
            }
            
            if (!klib.ReadDirectoryChangesW(finfo.handle, finfo.info,
                                            finfo.info.size(), finfo.recursive,
                                            finfo.notifyMask, finfo.infoLength, 
                                            finfo.overlapped, null)) {
                int err = klib.GetLastError();
                throw new IOException("ReadDirectoryChangesW failed on "
                                      + finfo.file + ": '" 
                                      + getSystemError(err)
                                      + "' (" + err + ")");
            }

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                                      + getSystemError(err)
                                      + "' (" + err + ")");
            }
        }
        private FileInfo waitForChange() {
            Kernel32 klib = Kernel32.INSTANCE;
            IntByReference rcount = new IntByReference();
            HANDLEByReference rkey = new HANDLEByReference();
            PointerByReference roverlap = new PointerByReference();
            klib.GetQueuedCompletionStatus(port, rcount, rkey, roverlap, Kernel32.INFINITE);
            return (FileInfo)handleMap.get(rkey.getValue());
        }

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                dir = dir.getParentFile();
            }
            if (dir == null) {
                throw new FileNotFoundException("No ancestor found for " + file);
            }
            Kernel32 klib = Kernel32.INSTANCE;
            int mask = Kernel32.FILE_SHARE_READ
                | Kernel32.FILE_SHARE_WRITE | Kernel32.FILE_SHARE_DELETE;
            int flags = Kernel32.FILE_FLAG_BACKUP_SEMANTICS
                | Kernel32.FILE_FLAG_OVERLAPPED;
            HANDLE handle = klib.CreateFile(file.getAbsolutePath(), 
                                            Kernel32.FILE_LIST_DIRECTORY,
                                            mask, null, Kernel32.OPEN_EXISTING,
                                            flags, null);
            if (Kernel32.INVALID_HANDLE_VALUE.equals(handle)) {
                throw new IOException("Unable to open " + file + " (" 
                                      + klib.GetLastError() + ")");
            }
            int notifyMask = convertMask(eventMask);
            FileInfo finfo = new FileInfo(file, handle, notifyMask, recursive);
            fileMap.put(file, finfo);
            handleMap.put(handle, finfo);
            // Existing port is returned
            port = klib.CreateIoCompletionPort(handle, port, handle.getPointer(), 0);
            if (Kernel32.INVALID_HANDLE_VALUE.equals(port)) {
                throw new IOException("Unable to create/use I/O Completion port "
                        + "for " + file + " ("
                        + klib.GetLastError() + ")");
            }
            // TODO: use FileIOCompletionRoutine callback method instead of a 
            // dedicated thread
            if (!klib.ReadDirectoryChangesW(handle, finfo.info, finfo.info.size(), 
                                            recursive, notifyMask, finfo.infoLength, 
                                            finfo.overlapped, null)) {
                int err = klib.GetLastError();
                throw new IOException("ReadDirectoryChangesW failed on "
                                      + finfo.file 
                                      + ": '" + getSystemError(err)
                                      + "' (" + err + ")");
            }

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        }
        protected synchronized void unwatch(File file) {
            FileInfo finfo = (FileInfo)fileMap.remove(file);
            if (finfo != null) {
                handleMap.remove(finfo.handle);
                Kernel32 klib = Kernel32.INSTANCE;
                klib.CloseHandle(finfo.handle);
            }
        }

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                Kernel32 klib = Kernel32.INSTANCE;
                klib.CloseHandle(finfo.handle);
            }
        }
        protected synchronized void dispose() {
            Kernel32 klib = Kernel32.INSTANCE;
            klib.PostQueuedCompletionStatus(port, 0, null, null);
            klib.CloseHandle(port);
            port = null;
            watcher = null;
        }

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            klib.CloseHandle(port);
            port = null;
            watcher = null;
        }
        private String getSystemError(int code) {
            Kernel32 lib = Kernel32.INSTANCE;
            PointerByReference pref = new PointerByReference();
            lib.FormatMessage(Kernel32.FORMAT_MESSAGE_ALLOCATE_BUFFER
                              |Kernel32.FORMAT_MESSAGE_FROM_SYSTEM
                              |Kernel32.FORMAT_MESSAGE_IGNORE_INSERTS, 
                              null, code, 
                              0, pref, 0, null);
            String s = pref.getValue().getString(0, !Boolean.getBoolean("w32.ascii"));
            lib.LocalFree(pref.getValue());
            return s;
        }

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        private HANDLE port;
        private final Map fileMap = new HashMap();
        private final Map handleMap = new HashMap();
        
        private void handleChanges(FileInfo finfo) throws IOException {
            Kernel32 klib = Kernel32.INSTANCE;
            FILE_NOTIFY_INFORMATION fni = finfo.info;
            // Need an explicit read, since data was filled in asynchronously
            fni.read();
            do {
                FileEvent event = null;
                File file = new File(finfo.file, fni.getFilename());
                switch(fni.Action) {
                case Kernel32.FILE_ACTION_MODIFIED:
                    event = new FileEvent(file, FILE_MODIFIED); break;
                case Kernel32.FILE_ACTION_ADDED:
                    event = new FileEvent(file, FILE_CREATED); break;
                case Kernel32.FILE_ACTION_REMOVED:
                    event = new FileEvent(file, FILE_DELETED); break;
                case Kernel32.FILE_ACTION_RENAMED_OLD_NAME:
                    event = new FileEvent(file, FILE_NAME_CHANGED_OLD); break;
                case Kernel32.FILE_ACTION_RENAMED_NEW_NAME:
                    event = new FileEvent(file, FILE_NAME_CHANGED_NEW); break;
                default:
                    // TODO: other actions...
                    System.err.println("Unrecognized file action '" + fni.Action + "'");
                }
                if (event != null)
                    notify(event);
                fni = fni.next();
            } while (fni != null);
            // Trigger the next read
            if (!finfo.file.exists()) {
                unwatch(finfo.file);
                return;
            }
            
            if (!klib.ReadDirectoryChangesW(finfo.handle, finfo.info,
                                            finfo.info.size(), finfo.recursive,
                                            finfo.notifyMask, finfo.infoLength, 
                                            finfo.overlapped, null)) {
                int err = klib.GetLastError();
                throw new IOException("ReadDirectoryChangesW failed on "
                                      + finfo.file + ": '" 
                                      + getSystemError(err)
                                      + "' (" + err + ")");
            }

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                                      + getSystemError(err)
                                      + "' (" + err + ")");
            }
        }
        private FileInfo waitForChange() {
            Kernel32 klib = Kernel32.INSTANCE;
            IntByReference rcount = new IntByReference();
            HANDLEByReference rkey = new HANDLEByReference();
            PointerByReference roverlap = new PointerByReference();
            klib.GetQueuedCompletionStatus(port, rcount, rkey, roverlap, Kernel32.INFINITE);
            
            synchronized (this) { 
                return (FileInfo)handleMap.get(rkey.getValue());
            }
        }

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