1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef INCLUDED_CANVAS_PRIORITYBOOSTER_HXX 25 #define INCLUDED_CANVAS_PRIORITYBOOSTER_HXX 26 27 #include <sal/types.h> 28 29 #include <memory> 30 #include <canvas/canvastoolsdllapi.h> 31 32 33 namespace canvas 34 { 35 namespace tools 36 { 37 struct PriorityBooster_Impl; 38 39 /** Simplistic RAII object, to temporarily boost execution 40 priority for the current scope. 41 */ 42 class PriorityBooster 43 { 44 public: 45 /** Create booster, with given priority delta 46 47 @param nDelta 48 Difference in execution priority. Positive values 49 increase prio, negative values decrease prio. 50 */ 51 CANVASTOOLS_DLLPUBLIC explicit PriorityBooster( sal_Int32 nDelta ); 52 CANVASTOOLS_DLLPUBLIC ~PriorityBooster(); 53 54 private: 55 // also disables copy constructor and assignment operator 56 const ::std::auto_ptr< PriorityBooster_Impl > mpImpl; 57 }; 58 } 59 } 60 61 #endif /* INCLUDED_CANVAS_PRIORITYBOOSTER_HXX */ 62 // eof 63