/*
 *  Copyright 2008-2013 NVIDIA Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

/*! \file thrust/system/cuda/error.h
 *  \brief CUDA-specific error reporting
 */

#pragma once

#include <thrust/detail/config.h>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header
#include <thrust/detail/type_traits.h>
#include <thrust/system/error_code.h>

THRUST_NAMESPACE_BEGIN

namespace system
{
// To construct an error_code after a CUDA Runtime error:
//
//   error_code(::cudaGetLastError(), cuda_category())

// XXX N3000 prefers enum class errc { ... }
/*! Namespace for CUDA Runtime errors.
 */
namespace cuda::errc
{
/*! \p errc_t enumerates the kinds of CUDA Runtime errors.
 */
enum errc_t
{
  // from cuda/include/driver_types.h
  // mirror their order
  success                           = cudaSuccess,
  missing_configuration             = cudaErrorMissingConfiguration,
  memory_allocation                 = cudaErrorMemoryAllocation,
  initialization_error              = cudaErrorInitializationError,
  launch_failure                    = cudaErrorLaunchFailure,
  launch_timeout                    = cudaErrorLaunchTimeout,
  launch_out_of_resources           = cudaErrorLaunchOutOfResources,
  invalid_device_function           = cudaErrorInvalidDeviceFunction,
  invalid_configuration             = cudaErrorInvalidConfiguration,
  invalid_device                    = cudaErrorInvalidDevice,
  invalid_value                     = cudaErrorInvalidValue,
  invalid_pitch_value               = cudaErrorInvalidPitchValue,
  invalid_symbol                    = cudaErrorInvalidSymbol,
  map_buffer_object_failed          = cudaErrorMapBufferObjectFailed,
  unmap_buffer_object_failed        = cudaErrorUnmapBufferObjectFailed,
  invalid_texture                   = cudaErrorInvalidTexture,
  invalid_texture_binding           = cudaErrorInvalidTextureBinding,
  invalid_channel_descriptor        = cudaErrorInvalidChannelDescriptor,
  invalid_memcpy_direction          = cudaErrorInvalidMemcpyDirection,
  invalid_filter_setting            = cudaErrorInvalidFilterSetting,
  invalid_norm_setting              = cudaErrorInvalidNormSetting,
  cuda_runtime_unloading            = cudaErrorCudartUnloading,
  unknown                           = cudaErrorUnknown,
  invalid_resource_handle           = cudaErrorInvalidResourceHandle,
  not_ready                         = cudaErrorNotReady,
  insufficient_driver               = cudaErrorInsufficientDriver,
  set_on_active_process_error       = cudaErrorSetOnActiveProcess,
  no_device                         = cudaErrorNoDevice,
  ecc_uncorrectable                 = cudaErrorECCUncorrectable,
  shared_object_symbol_not_found    = cudaErrorSharedObjectSymbolNotFound,
  shared_object_init_failed         = cudaErrorSharedObjectInitFailed,
  unsupported_limit                 = cudaErrorUnsupportedLimit,
  duplicate_variable_name           = cudaErrorDuplicateVariableName,
  duplicate_texture_name            = cudaErrorDuplicateTextureName,
  duplicate_surface_name            = cudaErrorDuplicateSurfaceName,
  devices_unavailable               = cudaErrorDevicesUnavailable,
  invalid_kernel_image              = cudaErrorInvalidKernelImage,
  no_kernel_image_for_device        = cudaErrorNoKernelImageForDevice,
  incompatible_driver_context       = cudaErrorIncompatibleDriverContext,
  peer_access_already_enabled       = cudaErrorPeerAccessAlreadyEnabled,
  peer_access_not_enabled           = cudaErrorPeerAccessNotEnabled,
  device_already_in_use             = cudaErrorDeviceAlreadyInUse,
  profiler_disabled                 = cudaErrorProfilerDisabled,
  assert_triggered                  = cudaErrorAssert,
  too_many_peers                    = cudaErrorTooManyPeers,
  host_memory_already_registered    = cudaErrorHostMemoryAlreadyRegistered,
  host_memory_not_registered        = cudaErrorHostMemoryNotRegistered,
  operating_system_error            = cudaErrorOperatingSystem,
  peer_access_unsupported           = cudaErrorPeerAccessUnsupported,
  launch_max_depth_exceeded         = cudaErrorLaunchMaxDepthExceeded,
  launch_file_scoped_texture_used   = cudaErrorLaunchFileScopedTex,
  launch_file_scoped_surface_used   = cudaErrorLaunchFileScopedSurf,
  sync_depth_exceeded               = cudaErrorSyncDepthExceeded,
  attempted_operation_not_permitted = cudaErrorNotPermitted,
  attempted_operation_not_supported = cudaErrorNotSupported,
  startup_failure                   = cudaErrorStartupFailure
}; // end errc_t
} // namespace cuda::errc

/*! \return A reference to an object of a type derived from class \p thrust::error_category.
 *  \note The object's \p equivalent virtual functions shall behave as specified
 *        for the class \p thrust::error_category. The object's \p name virtual function shall
 *        return a pointer to the string <tt>"cuda"</tt>. The object's
 *        \p default_error_condition virtual function shall behave as follows:
 *
 *        If the argument <tt>ev</tt> corresponds to a CUDA error value, the function
 *        shall return <tt>error_condition(ev,cuda_category())</tt>.
 *        Otherwise, the function shall return <tt>system_category.default_error_condition(ev)</tt>.
 */
inline const error_category& cuda_category();

// XXX N3000 prefers is_error_code_enum<cuda::errc>

/*! Specialization of \p is_error_code_enum for \p cuda::errc::errc_t
 */
template <>
struct is_error_code_enum<cuda::errc::errc_t> : thrust::detail::true_type
{};

// XXX replace cuda::errc::errc_t with cuda::errc upon c++0x
/*! \return <tt>error_code(static_cast<int>(e), cuda::error_category())</tt>
 */
inline error_code make_error_code(cuda::errc::errc_t e);

// XXX replace cuda::errc::errc_t with cuda::errc upon c++0x
/*! \return <tt>error_condition(static_cast<int>(e), cuda::error_category())</tt>.
 */
inline error_condition make_error_condition(cuda::errc::errc_t e);
} // namespace system

namespace cuda_cub
{
namespace errc = system::cuda::errc;
} // namespace cuda_cub

namespace cuda
{
// XXX replace with using system::cuda_errc upon c++0x
namespace errc = system::cuda::errc;
} // namespace cuda

using system::cuda_category;

THRUST_NAMESPACE_END

#include <thrust/system/cuda/detail/error.inl>
