//
// Copyright 2012 Francisco Jerez
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//

#include "core/platform.hpp"
#include "util/u_debug.h"

using namespace clover;

platform::platform() : adaptor_range(evals(), devs) {
   int n = pipe_loader_probe(NULL, 0);
   std::vector<pipe_loader_device *> ldevs(n);

   unsigned major = 1, minor = 1;
   debug_get_version_option("CLOVER_PLATFORM_VERSION_OVERRIDE", &major, &minor);
   version = CL_MAKE_VERSION(major, minor, 0);

   pipe_loader_probe(&ldevs.front(), n);

   for (pipe_loader_device *ldev : ldevs) {
      try {
         if (ldev)
            devs.push_back(create<device>(*this, ldev));
      } catch (error &) {
         pipe_loader_release(&ldev, 1);
      }
   }
}

std::vector<cl_name_version>
platform::supported_extensions() const {
   std::vector<cl_name_version> vec;

   vec.push_back( cl_name_version{ CL_MAKE_VERSION(1, 0, 0), "cl_khr_icd" } );
   return vec;
}

std::string
platform::supported_extensions_as_string() const {
   static std::string extensions_string;

   if (!extensions_string.empty())
      return extensions_string;

   const auto extension_list = supported_extensions();
   for (const auto &extension : extension_list) {
      if (!extensions_string.empty())
         extensions_string += " ";
      extensions_string += extension.name;
   }
   return extensions_string;
}

std::string
platform::platform_version_as_string() const {
   static const std::string version_string =
      std::to_string(CL_VERSION_MAJOR(version)) + "." +
      std::to_string(CL_VERSION_MINOR(version));
   return version_string;
}

cl_version
platform::platform_version() const {
   return version;
}