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  1. //
  2. // Copyright 2012 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 __CORE_RESOURCE_HPP__
  24. #define __CORE_RESOURCE_HPP__
  25.  
  26. #include <list>
  27.  
  28. #include "core/base.hpp"
  29. #include "core/memory.hpp"
  30. #include "core/geometry.hpp"
  31. #include "pipe/p_state.h"
  32.  
  33. namespace clover {
  34.    class mapping;
  35.  
  36.    ///
  37.    /// Class that represents a device-specific instance of some memory
  38.    /// object.
  39.    ///
  40.    class resource {
  41.    public:
  42.       typedef clover::point<size_t, 3> point;
  43.  
  44.       resource(const resource &r) = delete;
  45.       virtual ~resource();
  46.  
  47.       void copy(command_queue &q, const point &origin, const point &region,
  48.                 resource &src_resource, const point &src_origin);
  49.  
  50.       void *add_map(command_queue &q, cl_map_flags flags, bool blocking,
  51.                     const point &origin, const point &region);
  52.       void del_map(void *p);
  53.       unsigned map_count() const;
  54.  
  55.       clover::device &dev;
  56.       clover::memory_obj &obj;
  57.  
  58.       friend class sub_resource;
  59.       friend class mapping;
  60.       friend struct ::_cl_kernel;
  61.  
  62.    protected:
  63.       resource(clover::device &dev, clover::memory_obj &obj);
  64.  
  65.       pipe_sampler_view *bind_sampler_view(clover::command_queue &q);
  66.       void unbind_sampler_view(clover::command_queue &q,
  67.                                pipe_sampler_view *st);
  68.  
  69.       pipe_surface *bind_surface(clover::command_queue &q, bool rw);
  70.       void unbind_surface(clover::command_queue &q, pipe_surface *st);
  71.  
  72.       pipe_resource *pipe;
  73.       point offset;
  74.  
  75.    private:
  76.       std::list<mapping> maps;
  77.    };
  78.  
  79.    ///
  80.    /// Resource associated with its own top-level data storage
  81.    /// allocated in some device.
  82.    ///
  83.    class root_resource : public resource {
  84.    public:
  85.       root_resource(clover::device &dev, clover::memory_obj &obj,
  86.                     clover::command_queue &q, const std::string &data);
  87.       root_resource(clover::device &dev, clover::memory_obj &obj,
  88.                     root_resource &r);
  89.       virtual ~root_resource();
  90.    };
  91.  
  92.    ///
  93.    /// Resource that reuses a portion of some other resource as data
  94.    /// storage.
  95.    ///
  96.    class sub_resource : public resource {
  97.    public:
  98.       sub_resource(clover::resource &r, point offset);
  99.    };
  100.  
  101.    ///
  102.    /// Class that represents a mapping of some resource into the CPU
  103.    /// memory space.
  104.    ///
  105.    class mapping {
  106.    public:
  107.       mapping(command_queue &q, resource &r, cl_map_flags flags,
  108.               bool blocking, const resource::point &origin,
  109.               const resource::point &region);
  110.       mapping(const mapping &m) = delete;
  111.       mapping(mapping &&m);
  112.       ~mapping();
  113.  
  114.       operator void *() {
  115.          return p;
  116.       }
  117.  
  118.       operator char *() {
  119.          return (char *)p;
  120.       }
  121.  
  122.    private:
  123.       pipe_context *pctx;
  124.       pipe_transfer *pxfer;
  125.       void *p;
  126.    };
  127. }
  128.  
  129. #endif
  130.