1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab: 2 * 3 * DataDifferential Utility Library 4 * 5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/ 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are 10 * met: 11 * 12 * * Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * * Redistributions in binary form must reproduce the above 16 * copyright notice, this list of conditions and the following disclaimer 17 * in the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * * The names of its contributors may not be used to endorse or 21 * promote products derived from this software without specific prior 22 * written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 * 36 */ 37 38 #pragma once 39 40 #include <string> 41 42 namespace datadifferential { 43 namespace util { 44 45 class Pidfile 46 { 47 public: 48 Pidfile(const std::string &arg); 49 50 ~Pidfile(); 51 error_message()52 const std::string &error_message() 53 { 54 return _error_message; 55 } 56 57 bool create(); 58 59 private: 60 int _last_errno; 61 const std::string _filename; 62 std::string _error_message; 63 }; 64 65 } /* namespace util */ 66 } /* namespace datadifferential */ 67