private/XrdCl/XrdClOperationTimeout.hh

0001 /*
0002  * XrdClOperationTimeout.hh
0003  *
0004  *  Created on: 4 Nov 2020
0005  *      Author: simonm
0006  */
0007
0008 #ifndef SRC_XRDCL_XRDCLOPERATIONTIMEOUT_HH_
0009 #define SRC_XRDCL_XRDCLOPERATIONTIMEOUT_HH_
0010
0011 #include <cstdint>
0012 #include <ctime>
0013 #include <exception>
0014
0015 namespace XrdCl
0016 {
0017   class operation_expired : public std::exception {};
0018
0019   class Timeout
0020   {
0021     public:
0022
0023       Timeout(): timeout( 0 ), start( 0 )
0024       {
0025       }
0026
0027       Timeout( uint16_t timeout ): timeout( timeout ), start( time( 0 ) )
0028       {
0029       }
0030
0031       Timeout& operator=( const Timeout &to )
0032       {
0033         timeout = to.timeout;
0034         start   = to.start;
0035         return *this;
0036       }
0037
0038       Timeout( const Timeout &to ) : timeout( to.timeout ), start( to.start )
0039       {
0040       }
0041
0042       operator uint16_t() const
0043       {
0044         if( !timeout ) return 0;
0045         time_t elapsed = time( 0 ) - start;
0046         if( timeout < elapsed) throw operation_expired();
0047         return timeout - elapsed;
0048       }
0049
0050     private:
0051
0052       uint16_t timeout;
0053       time_t   start;
0054   };
0055
0056 }
0057
0058 #endif /* SRC_XRDCL_XRDCLOPERATIONTIMEOUT_HH_ */