/***************************************************************************************************
 * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this list of
 *       conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *     * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
 *       to endorse or promote products derived from this software without specific prior written
 *       permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 **************************************************************************************************/
/* \file
   \brief 
*/

#pragma once

#include <map>
#include <string>


#include "cutlass/library/library.h"
#include "cutlass/library/util.h"

#include "options.h"
#include "device_allocation.h"

namespace cutlass {
namespace profiler {

/////////////////////////////////////////////////////////////////////////////////////////////////

/// Collection of allocations on the device
class DeviceContext {
public:

  //
  // Type definitions
  //
  using AllocationMap = std::map<std::string, DeviceAllocation *>;

private:
  //
  // Data members
  //

  /// Memory allocations that exist (owning)
  DeviceAllocationList device_memory_;

  /// Non-owning set of named allocations
  AllocationMap allocations_;
  
public:

  /// Allocates memory of a given type, capacity (elements), and name
  DeviceAllocation *allocate_block(
    std::string const &name,
    library::NumericTypeID type, 
    size_t capacity);

  /// Allocates memory of a given type, capacity (elements), and name
  DeviceAllocation *allocate_tensor(
    std::string const &name,
    library::NumericTypeID type, 
    library::LayoutTypeID layout_id, 
    std::vector<int> const &extent, 
    std::vector<int> const &stride = std::vector<int>(),
    int batch_count = 1);

  /// Allocates memory of a given type, capacity (elements), and name
  DeviceAllocation *allocate_tensor(
    Options const &options,
    std::string const &name,
    library::NumericTypeID type, 
    library::LayoutTypeID layout_id, 
    std::vector<int> const &extent, 
    std::vector<int> const &stride = std::vector<int>(),
    int batch_count = 1);

  /// Allocates memory for sparse meta data 
  DeviceAllocation *allocate_sparsemeta_tensor(
    Options const &options,
    std::string const &name,
    library::NumericTypeID type, 
    library::LayoutTypeID layout_id, 
    library::NumericTypeID type_a,
    std::vector<int> const &extent, 
    std::vector<int> const &stride = std::vector<int>(),
    int batch_count = 1);

  /// Clears named allocations (but does not necessarily free memory)
  void clear();

  /// Frees all device memory allocations
  void free();

  /// Gets the allocation by name
  DeviceAllocation &at(std::string const &name);

  size_t size() const;

  AllocationMap::iterator begin();
  AllocationMap::iterator end();
};

/////////////////////////////////////////////////////////////////////////////////////////////////

} // namespace profiler
} // namespace cutlass