1 // 2 // Copyright 2013 Francisco Jerez 3 // 4 // Permission is hereby granted, free of charge, to any person obtaining a 5 // copy of this software and associated documentation files (the "Software"), 6 // to deal in the Software without restriction, including without limitation 7 // the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 // and/or sell copies of the Software, and to permit persons to whom the 9 // Software is furnished to do so, subject to the following conditions: 10 // 11 // The above copyright notice and this permission notice shall be included in 12 // all copies or substantial portions of the Software. 13 // 14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 // OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 // OTHER DEALINGS IN THE SOFTWARE. 21 // 22 23 #ifndef CLOVER_CORE_TIMESTAMP_HPP 24 #define CLOVER_CORE_TIMESTAMP_HPP 25 26 #include "core/object.hpp" 27 28 struct pipe_query; 29 30 namespace clover { 31 class command_queue; 32 33 namespace timestamp { 34 /// 35 /// Emit a timestamp query that is executed asynchronously by 36 /// the command queue \a q. 37 /// 38 class query { 39 public: 40 query(command_queue &q); 41 query(query &&other); 42 ~query(); 43 44 query &operator=(const query &) = delete; 45 46 /// 47 /// Retrieve the query results. 48 /// 49 cl_ulong operator()() const; 50 51 private: 52 const intrusive_ref<command_queue> q; 53 pipe_query *_query; 54 }; 55 56 /// 57 /// Get the current timestamp value. 58 /// 59 class current { 60 public: 61 current(command_queue &q); 62 63 /// 64 /// Retrieve the query results. 65 /// 66 cl_ulong operator()() const; 67 68 private: 69 cl_ulong result; 70 }; 71 } 72 } 73 74 #endif 75
