unique_string_manager.h
Go to the documentation of this file.00001 /* 00002 * Copyright (c) 2011, Willow Garage, Inc. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions are met: 00007 * 00008 * * Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * * Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * * Neither the name of the Willow Garage, Inc. nor the names of its 00014 * contributors may be used to endorse or promote products derived from 00015 * this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00018 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00021 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00022 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00023 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00024 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00025 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00026 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00027 * POSSIBILITY OF SUCH DAMAGE. 00028 */ 00029 00030 #ifndef UNIQUE_STRING_MANAGER_H_ 00031 #define UNIQUE_STRING_MANAGER_H_ 00032 00033 #include <boost/thread/mutex.hpp> 00034 00035 namespace rviz_interaction_tools 00036 { 00037 00038 inline int getNextInt() 00039 { 00040 static int val = 0; 00041 static boost::mutex mtx; 00042 00043 boost::mutex::scoped_lock lock ( mtx ); 00044 return val++; 00045 } 00046 00047 // on construction, acquires a unique id number 00048 // can be used to generate unique strings 00049 class UniqueStringManager 00050 { 00051 private: 00052 int val_; 00053 public: 00054 UniqueStringManager() 00055 { 00056 val_ = getNextInt(); 00057 } 00058 std::string unique(std::string base) 00059 { 00060 std::stringstream ss; 00061 ss << base << "_" << val_; 00062 return ss.str(); 00063 } 00064 }; 00065 00066 } 00067 00068 #endif /* UNIQUE_STRING_MANAGER_H_ */