XRootD
XrdClOptimizers.hh
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1 //------------------------------------------------------------------------------
2 // Copyright (c) 2011-2012 by European Organization for Nuclear Research (CERN)
3 // Author: Lukasz Janyst <ljanyst@cern.ch>
4 //------------------------------------------------------------------------------
5 // XRootD is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU Lesser General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
9 //
10 // XRootD is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
14 //
15 // You should have received a copy of the GNU Lesser General Public License
16 // along with XRootD. If not, see <http://www.gnu.org/licenses/>.
17 //------------------------------------------------------------------------------
18 
19 #ifndef __XRD_CL_OPTIMIZERS_HH__
20 #define __XRD_CL_OPTIMIZERS_HH__
21 
22 #ifdef __GNUC__
23 #define likely(x) __builtin_expect(!!(x), 1)
24 #define unlikely(x) __builtin_expect(!!(x), 0)
25 #else
26 #define likely(x) x
27 #define unlikely(x) x
28 #endif
29 
30 #endif // __XRD_CL_OPTIMIZERS_HH__