src/gallium/state_trackers/clover/core/timestamp.hpp

   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          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