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opencl.hpp
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opencl.hpp
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//
// Copyright (c) 2008-2020 The Khronos Group Inc.
//
// 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
*
* \brief C++ bindings for OpenCL 1.0, OpenCL 1.1, OpenCL 1.2,
* OpenCL 2.0, OpenCL 2.1, OpenCL 2.2, and OpenCL 3.0.
* \author Lee Howes and Bruce Merry
*
* Derived from the OpenCL 1.x C++ bindings written by
* Benedict R. Gaster, Laurent Morichetti and Lee Howes
* With additions and fixes from:
* Brian Cole, March 3rd 2010 and April 2012
* Matt Gruenke, April 2012.
* Bruce Merry, February 2013.
* Tom Deakin and Simon McIntosh-Smith, July 2013
* James Price, 2015-
* \version 2.2.0
* \date 2019-09-18
*
* Optional extension support
*
* cl_ext_device_fission
* #define CL_HPP_USE_CL_DEVICE_FISSION
* cl_khr_d3d10_sharing
* #define CL_HPP_USE_DX_INTEROP
* cl_khr_sub_groups
* #define CL_HPP_USE_CL_SUB_GROUPS_KHR
* cl_khr_image2d_from_buffer
* #define CL_HPP_USE_CL_IMAGE2D_FROM_BUFFER_KHR
*
* Doxygen documentation for this header is available here:
*
* http://khronosgroup.github.io/OpenCL-CLHPP/
*
* The latest version of this header can be found on the GitHub releases page:
*
* https://github.com/KhronosGroup/OpenCL-CLHPP/releases
*
* Bugs and patches can be submitted to the GitHub repository:
*
* https://github.com/KhronosGroup/OpenCL-CLHPP
*/
/*! \mainpage
* \section intro Introduction
* For many large applications C++ is the language of choice and so it seems
* reasonable to define C++ bindings for OpenCL.
*
* The interface is contained with a single C++ header file \em opencl.hpp and all
* definitions are contained within the namespace \em cl. There is no additional
* requirement to include \em cl.h and to use either the C++ or original C
* bindings; it is enough to simply include \em opencl.hpp.
*
* The bindings themselves are lightweight and correspond closely to the
* underlying C API. Using the C++ bindings introduces no additional execution
* overhead.
*
* There are numerous compatibility, portability and memory management
* fixes in the new header as well as additional OpenCL 2.0 features.
* As a result the header is not directly backward compatible and for this
* reason we release it as opencl.hpp rather than a new version of cl.hpp.
*
*
* \section compatibility Compatibility
* Due to the evolution of the underlying OpenCL API the 2.0 C++ bindings
* include an updated approach to defining supported feature versions
* and the range of valid underlying OpenCL runtime versions supported.
*
* The combination of preprocessor macros CL_HPP_TARGET_OPENCL_VERSION and
* CL_HPP_MINIMUM_OPENCL_VERSION control this range. These are three digit
* decimal values representing OpenCL runime versions. The default for
* the target is 200, representing OpenCL 2.0 and the minimum is also
* defined as 200. These settings would use 2.0 API calls only.
* If backward compatibility with a 1.2 runtime is required, the minimum
* version may be set to 120.
*
* Note that this is a compile-time setting, and so affects linking against
* a particular SDK version rather than the versioning of the loaded runtime.
*
* The earlier versions of the header included basic vector and string
* classes based loosely on STL versions. These were difficult to
* maintain and very rarely used. For the 2.0 header we now assume
* the presence of the standard library unless requested otherwise.
* We use std::array, std::vector, std::shared_ptr and std::string
* throughout to safely manage memory and reduce the chance of a
* recurrance of earlier memory management bugs.
*
* These classes are used through typedefs in the cl namespace:
* cl::array, cl::vector, cl::pointer and cl::string.
* In addition cl::allocate_pointer forwards to std::allocate_shared
* by default.
* In all cases these standard library classes can be replaced with
* custom interface-compatible versions using the CL_HPP_NO_STD_ARRAY,
* CL_HPP_NO_STD_VECTOR, CL_HPP_NO_STD_UNIQUE_PTR and
* CL_HPP_NO_STD_STRING macros.
*
* The OpenCL 1.x versions of the C++ bindings included a size_t wrapper
* class to interface with kernel enqueue. This caused unpleasant interactions
* with the standard size_t declaration and led to namespacing bugs.
* In the 2.0 version we have replaced this with a std::array-based interface.
* However, the old behaviour can be regained for backward compatibility
* using the CL_HPP_ENABLE_SIZE_T_COMPATIBILITY macro.
*
* Finally, the program construction interface used a clumsy vector-of-pairs
* design in the earlier versions. We have replaced that with a cleaner
* vector-of-vectors and vector-of-strings design. However, for backward
* compatibility old behaviour can be regained with the
* CL_HPP_ENABLE_PROGRAM_CONSTRUCTION_FROM_ARRAY_COMPATIBILITY macro.
*
* In OpenCL 2.0 OpenCL C is not entirely backward compatibility with
* earlier versions. As a result a flag must be passed to the OpenCL C
* compiled to request OpenCL 2.0 compilation of kernels with 1.2 as
* the default in the absence of the flag.
* In some cases the C++ bindings automatically compile code for ease.
* For those cases the compilation defaults to OpenCL C 2.0.
* If this is not wanted, the CL_HPP_CL_1_2_DEFAULT_BUILD macro may
* be specified to assume 1.2 compilation.
* If more fine-grained decisions on a per-kernel bases are required
* then explicit build operations that take the flag should be used.
*
*
* \section parameterization Parameters
* This header may be parameterized by a set of preprocessor macros.
*
* - CL_HPP_TARGET_OPENCL_VERSION
*
* Defines the target OpenCL runtime version to build the header
* against. Defaults to 200, representing OpenCL 2.0.
*
* - CL_HPP_NO_STD_STRING
*
* Do not use the standard library string class. cl::string is not
* defined and may be defined by the user before opencl.hpp is
* included.
*
* - CL_HPP_NO_STD_VECTOR
*
* Do not use the standard library vector class. cl::vector is not
* defined and may be defined by the user before opencl.hpp is
* included.
*
* - CL_HPP_NO_STD_ARRAY
*
* Do not use the standard library array class. cl::array is not
* defined and may be defined by the user before opencl.hpp is
* included.
*
* - CL_HPP_NO_STD_UNIQUE_PTR
*
* Do not use the standard library unique_ptr class. cl::pointer and
* the cl::allocate_pointer functions are not defined and may be
* defined by the user before opencl.hpp is included.
*
* - CL_HPP_ENABLE_EXCEPTIONS
*
* Enable exceptions for use in the C++ bindings header. This is the
* preferred error handling mechanism but is not required.
*
* - CL_HPP_ENABLE_SIZE_T_COMPATIBILITY
*
* Backward compatibility option to support cl.hpp-style size_t
* class. Replaces the updated std::array derived version and
* removal of size_t from the namespace. Note that in this case the
* new size_t class is placed in the cl::compatibility namespace and
* thus requires an additional using declaration for direct backward
* compatibility.
*
* - CL_HPP_ENABLE_PROGRAM_CONSTRUCTION_FROM_ARRAY_COMPATIBILITY
*
* Enable older vector of pairs interface for construction of
* programs.
*
* - CL_HPP_CL_1_2_DEFAULT_BUILD
*
* Default to OpenCL C 1.2 compilation rather than OpenCL C 2.0
* applies to use of cl::Program construction and other program
* build variants.
*
* - CL_HPP_USE_CL_DEVICE_FISSION
*
* Enable the cl_ext_device_fission extension.
*
* - CL_HPP_USE_CL_IMAGE2D_FROM_BUFFER_KHR
*
* Enable the cl_khr_image2d_from_buffer extension.
*
* - CL_HPP_USE_CL_SUB_GROUPS_KHR
*
* Enable the cl_khr_subgroups extension.
*
* - CL_HPP_USE_DX_INTEROP
*
* Enable the cl_khr_d3d10_sharing extension.
*
* - CL_HPP_USE_IL_KHR
*
* Enable the cl_khr_il_program extension.
*
*
* \section example Example
*
* The following example shows a general use case for the C++
* bindings, including support for the optional exception feature and
* also the supplied vector and string classes, see following sections for
* decriptions of these features.
*
* Note: the C++ bindings use std::call_once and therefore may need to be
* compiled using special command-line options (such as "-pthread") on some
* platforms!
*
* \code
#define CL_HPP_ENABLE_EXCEPTIONS
#define CL_HPP_TARGET_OPENCL_VERSION 200
#include <CL/opencl.hpp>
#include <iostream>
#include <vector>
#include <memory>
#include <algorithm>
const int numElements = 32;
int main(void)
{
// Filter for a 2.0 or newer platform and set it as the default
std::vector<cl::Platform> platforms;
cl::Platform::get(&platforms);
cl::Platform plat;
for (auto &p : platforms) {
std::string platver = p.getInfo<CL_PLATFORM_VERSION>();
if (platver.find("OpenCL 2.") != std::string::npos ||
platver.find("OpenCL 3.") != std::string::npos) {
// Note: an OpenCL 3.x platform may not support all required features!
plat = p;
}
}
if (plat() == 0) {
std::cout << "No OpenCL 2.0 or newer platform found.\n";
return -1;
}
cl::Platform newP = cl::Platform::setDefault(plat);
if (newP != plat) {
std::cout << "Error setting default platform.\n";
return -1;
}
// C++11 raw string literal for the first kernel
std::string kernel1{R"CLC(
global int globalA;
kernel void updateGlobal()
{
globalA = 75;
}
)CLC"};
// Raw string literal for the second kernel
std::string kernel2{R"CLC(
typedef struct { global int *bar; } Foo;
kernel void vectorAdd(global const Foo* aNum, global const int *inputA, global const int *inputB,
global int *output, int val, write_only pipe int outPipe, queue_t childQueue)
{
output[get_global_id(0)] = inputA[get_global_id(0)] + inputB[get_global_id(0)] + val + *(aNum->bar);
write_pipe(outPipe, &val);
queue_t default_queue = get_default_queue();
ndrange_t ndrange = ndrange_1D(get_global_size(0)/2, get_global_size(0)/2);
// Have a child kernel write into third quarter of output
enqueue_kernel(default_queue, CLK_ENQUEUE_FLAGS_WAIT_KERNEL, ndrange,
^{
output[get_global_size(0)*2 + get_global_id(0)] =
inputA[get_global_size(0)*2 + get_global_id(0)] + inputB[get_global_size(0)*2 + get_global_id(0)] + globalA;
});
// Have a child kernel write into last quarter of output
enqueue_kernel(childQueue, CLK_ENQUEUE_FLAGS_WAIT_KERNEL, ndrange,
^{
output[get_global_size(0)*3 + get_global_id(0)] =
inputA[get_global_size(0)*3 + get_global_id(0)] + inputB[get_global_size(0)*3 + get_global_id(0)] + globalA + 2;
});
}
)CLC"};
std::vector<std::string> programStrings;
programStrings.push_back(kernel1);
programStrings.push_back(kernel2);
cl::Program vectorAddProgram(programStrings);
try {
vectorAddProgram.build("-cl-std=CL2.0");
}
catch (...) {
// Print build info for all devices
cl_int buildErr = CL_SUCCESS;
auto buildInfo = vectorAddProgram.getBuildInfo<CL_PROGRAM_BUILD_LOG>(&buildErr);
for (auto &pair : buildInfo) {
std::cerr << pair.second << std::endl << std::endl;
}
return 1;
}
typedef struct { int *bar; } Foo;
// Get and run kernel that initializes the program-scope global
// A test for kernels that take no arguments
auto program2Kernel =
cl::KernelFunctor<>(vectorAddProgram, "updateGlobal");
program2Kernel(
cl::EnqueueArgs(
cl::NDRange(1)));
//////////////////
// SVM allocations
auto anSVMInt = cl::allocate_svm<int, cl::SVMTraitCoarse<>>();
*anSVMInt = 5;
cl::SVMAllocator<Foo, cl::SVMTraitCoarse<cl::SVMTraitReadOnly<>>> svmAllocReadOnly;
auto fooPointer = cl::allocate_pointer<Foo>(svmAllocReadOnly);
fooPointer->bar = anSVMInt.get();
cl::SVMAllocator<int, cl::SVMTraitCoarse<>> svmAlloc;
std::vector<int, cl::SVMAllocator<int, cl::SVMTraitCoarse<>>> inputA(numElements, 1, svmAlloc);
cl::coarse_svm_vector<int> inputB(numElements, 2, svmAlloc);
//////////////
// Traditional cl_mem allocations
std::vector<int> output(numElements, 0xdeadbeef);
cl::Buffer outputBuffer(begin(output), end(output), false);
cl::Pipe aPipe(sizeof(cl_int), numElements / 2);
// Default command queue, also passed in as a parameter
cl::DeviceCommandQueue defaultDeviceQueue = cl::DeviceCommandQueue::makeDefault(
cl::Context::getDefault(), cl::Device::getDefault());
auto vectorAddKernel =
cl::KernelFunctor<
decltype(fooPointer)&,
int*,
cl::coarse_svm_vector<int>&,
cl::Buffer,
int,
cl::Pipe&,
cl::DeviceCommandQueue
>(vectorAddProgram, "vectorAdd");
// Ensure that the additional SVM pointer is available to the kernel
// This one was not passed as a parameter
vectorAddKernel.setSVMPointers(anSVMInt);
cl_int error;
vectorAddKernel(
cl::EnqueueArgs(
cl::NDRange(numElements/2),
cl::NDRange(numElements/2)),
fooPointer,
inputA.data(),
inputB,
outputBuffer,
3,
aPipe,
defaultDeviceQueue,
error
);
cl::copy(outputBuffer, begin(output), end(output));
cl::Device d = cl::Device::getDefault();
std::cout << "Output:\n";
for (int i = 1; i < numElements; ++i) {
std::cout << "\t" << output[i] << "\n";
}
std::cout << "\n\n";
return 0;
}
*
* \endcode
*
*/
#ifndef CL_HPP_
#define CL_HPP_
/* Handle deprecated preprocessor definitions. In each case, we only check for
* the old name if the new name is not defined, so that user code can define
* both and hence work with either version of the bindings.
*/
#if !defined(CL_HPP_USE_DX_INTEROP) && defined(USE_DX_INTEROP)
# pragma message("opencl.hpp: USE_DX_INTEROP is deprecated. Define CL_HPP_USE_DX_INTEROP instead")
# define CL_HPP_USE_DX_INTEROP
#endif
#if !defined(CL_HPP_USE_CL_DEVICE_FISSION) && defined(USE_CL_DEVICE_FISSION)
# pragma message("opencl.hpp: USE_CL_DEVICE_FISSION is deprecated. Define CL_HPP_USE_CL_DEVICE_FISSION instead")
# define CL_HPP_USE_CL_DEVICE_FISSION
#endif
#if !defined(CL_HPP_ENABLE_EXCEPTIONS) && defined(__CL_ENABLE_EXCEPTIONS)
# pragma message("opencl.hpp: __CL_ENABLE_EXCEPTIONS is deprecated. Define CL_HPP_ENABLE_EXCEPTIONS instead")
# define CL_HPP_ENABLE_EXCEPTIONS
#endif
#if !defined(CL_HPP_NO_STD_VECTOR) && defined(__NO_STD_VECTOR)
# pragma message("opencl.hpp: __NO_STD_VECTOR is deprecated. Define CL_HPP_NO_STD_VECTOR instead")
# define CL_HPP_NO_STD_VECTOR
#endif
#if !defined(CL_HPP_NO_STD_STRING) && defined(__NO_STD_STRING)
# pragma message("opencl.hpp: __NO_STD_STRING is deprecated. Define CL_HPP_NO_STD_STRING instead")
# define CL_HPP_NO_STD_STRING
#endif
#if defined(VECTOR_CLASS)
# pragma message("opencl.hpp: VECTOR_CLASS is deprecated. Alias cl::vector instead")
#endif
#if defined(STRING_CLASS)
# pragma message("opencl.hpp: STRING_CLASS is deprecated. Alias cl::string instead.")
#endif
#if !defined(CL_HPP_USER_OVERRIDE_ERROR_STRINGS) && defined(__CL_USER_OVERRIDE_ERROR_STRINGS)
# pragma message("opencl.hpp: __CL_USER_OVERRIDE_ERROR_STRINGS is deprecated. Define CL_HPP_USER_OVERRIDE_ERROR_STRINGS instead")
# define CL_HPP_USER_OVERRIDE_ERROR_STRINGS
#endif
/* Warn about features that are no longer supported
*/
#if defined(__USE_DEV_VECTOR)
# pragma message("opencl.hpp: __USE_DEV_VECTOR is no longer supported. Expect compilation errors")
#endif
#if defined(__USE_DEV_STRING)
# pragma message("opencl.hpp: __USE_DEV_STRING is no longer supported. Expect compilation errors")
#endif
/* Detect which version to target */
#if !defined(CL_HPP_TARGET_OPENCL_VERSION)
# pragma message("opencl.hpp: CL_HPP_TARGET_OPENCL_VERSION is not defined. It will default to 300 (OpenCL 3.0)")
# define CL_HPP_TARGET_OPENCL_VERSION 300
#endif
#if CL_HPP_TARGET_OPENCL_VERSION != 100 && \
CL_HPP_TARGET_OPENCL_VERSION != 110 && \
CL_HPP_TARGET_OPENCL_VERSION != 120 && \
CL_HPP_TARGET_OPENCL_VERSION != 200 && \
CL_HPP_TARGET_OPENCL_VERSION != 210 && \
CL_HPP_TARGET_OPENCL_VERSION != 220 && \
CL_HPP_TARGET_OPENCL_VERSION != 300
# pragma message("opencl.hpp: CL_HPP_TARGET_OPENCL_VERSION is not a valid value (100, 110, 120, 200, 210, 220 or 300). It will be set to 300 (OpenCL 3.0).")
# undef CL_HPP_TARGET_OPENCL_VERSION
# define CL_HPP_TARGET_OPENCL_VERSION 300
#endif
/* Forward target OpenCL version to C headers if necessary */
#if defined(CL_TARGET_OPENCL_VERSION)
/* Warn if prior definition of CL_TARGET_OPENCL_VERSION is lower than
* requested C++ bindings version */
#if CL_TARGET_OPENCL_VERSION < CL_HPP_TARGET_OPENCL_VERSION
# pragma message("CL_TARGET_OPENCL_VERSION is already defined as is lower than CL_HPP_TARGET_OPENCL_VERSION")
#endif
#else
# define CL_TARGET_OPENCL_VERSION CL_HPP_TARGET_OPENCL_VERSION
#endif
#if !defined(CL_HPP_MINIMUM_OPENCL_VERSION)
# define CL_HPP_MINIMUM_OPENCL_VERSION 200
#endif
#if CL_HPP_MINIMUM_OPENCL_VERSION != 100 && \
CL_HPP_MINIMUM_OPENCL_VERSION != 110 && \
CL_HPP_MINIMUM_OPENCL_VERSION != 120 && \
CL_HPP_MINIMUM_OPENCL_VERSION != 200 && \
CL_HPP_MINIMUM_OPENCL_VERSION != 210 && \
CL_HPP_MINIMUM_OPENCL_VERSION != 220 && \
CL_HPP_MINIMUM_OPENCL_VERSION != 300
# pragma message("opencl.hpp: CL_HPP_MINIMUM_OPENCL_VERSION is not a valid value (100, 110, 120, 200, 210, 220 or 300). It will be set to 100")
# undef CL_HPP_MINIMUM_OPENCL_VERSION
# define CL_HPP_MINIMUM_OPENCL_VERSION 100
#endif
#if CL_HPP_MINIMUM_OPENCL_VERSION > CL_HPP_TARGET_OPENCL_VERSION
# error "CL_HPP_MINIMUM_OPENCL_VERSION must not be greater than CL_HPP_TARGET_OPENCL_VERSION"
#endif
#if CL_HPP_MINIMUM_OPENCL_VERSION <= 100 && !defined(CL_USE_DEPRECATED_OPENCL_1_0_APIS)
# define CL_USE_DEPRECATED_OPENCL_1_0_APIS
#endif
#if CL_HPP_MINIMUM_OPENCL_VERSION <= 110 && !defined(CL_USE_DEPRECATED_OPENCL_1_1_APIS)
# define CL_USE_DEPRECATED_OPENCL_1_1_APIS
#endif
#if CL_HPP_MINIMUM_OPENCL_VERSION <= 120 && !defined(CL_USE_DEPRECATED_OPENCL_1_2_APIS)
# define CL_USE_DEPRECATED_OPENCL_1_2_APIS
#endif
#if CL_HPP_MINIMUM_OPENCL_VERSION <= 200 && !defined(CL_USE_DEPRECATED_OPENCL_2_0_APIS)
# define CL_USE_DEPRECATED_OPENCL_2_0_APIS
#endif
#if CL_HPP_MINIMUM_OPENCL_VERSION <= 210 && !defined(CL_USE_DEPRECATED_OPENCL_2_1_APIS)
# define CL_USE_DEPRECATED_OPENCL_2_1_APIS
#endif
#if CL_HPP_MINIMUM_OPENCL_VERSION <= 220 && !defined(CL_USE_DEPRECATED_OPENCL_2_2_APIS)
# define CL_USE_DEPRECATED_OPENCL_2_2_APIS
#endif
#ifdef _WIN32
#include <malloc.h>
#if defined(CL_HPP_USE_DX_INTEROP)
#include <CL/cl_d3d10.h>
#include <CL/cl_dx9_media_sharing.h>
#endif
#endif // _WIN32
#if defined(_MSC_VER)
#include <intrin.h>
#endif // _MSC_VER
// Check for a valid C++ version
// Need to do both tests here because for some reason __cplusplus is not
// updated in visual studio
#if (!defined(_MSC_VER) && __cplusplus < 201103L) || (defined(_MSC_VER) && _MSC_VER < 1700)
#error Visual studio 2013 or another C++11-supporting compiler required
#endif
//
#if defined(CL_HPP_USE_CL_DEVICE_FISSION) || defined(CL_HPP_USE_CL_SUB_GROUPS_KHR)
#include <CL/cl_ext.h>
#endif
#if defined(__APPLE__) || defined(__MACOSX)
#include <OpenCL/opencl.h>
#else
#include <CL/opencl.h>
#endif // !__APPLE__
#if (__cplusplus >= 201103L || _MSVC_LANG >= 201103L )
#define CL_HPP_NOEXCEPT_ noexcept
#else
#define CL_HPP_NOEXCEPT_
#endif
#if __cplusplus >= 201703L
# define CL_HPP_DEFINE_STATIC_MEMBER_ inline
#elif defined(_MSC_VER)
# define CL_HPP_DEFINE_STATIC_MEMBER_ __declspec(selectany)
#elif defined(__MINGW32__)
# define CL_HPP_DEFINE_STATIC_MEMBER_ __attribute__((selectany))
#else
# define CL_HPP_DEFINE_STATIC_MEMBER_ __attribute__((weak))
#endif // !_MSC_VER
// Define deprecated prefixes and suffixes to ensure compilation
// in case they are not pre-defined
#if !defined(CL_API_PREFIX__VERSION_1_1_DEPRECATED)
#define CL_API_PREFIX__VERSION_1_1_DEPRECATED
#endif // #if !defined(CL_API_PREFIX__VERSION_1_1_DEPRECATED)
#if !defined(CL_API_SUFFIX__VERSION_1_1_DEPRECATED)
#define CL_API_SUFFIX__VERSION_1_1_DEPRECATED
#endif // #if !defined(CL_API_SUFFIX__VERSION_1_1_DEPRECATED)
#if !defined(CL_API_PREFIX__VERSION_1_2_DEPRECATED)
#define CL_API_PREFIX__VERSION_1_2_DEPRECATED
#endif // #if !defined(CL_API_PREFIX__VERSION_1_2_DEPRECATED)
#if !defined(CL_API_SUFFIX__VERSION_1_2_DEPRECATED)
#define CL_API_SUFFIX__VERSION_1_2_DEPRECATED
#endif // #if !defined(CL_API_SUFFIX__VERSION_1_2_DEPRECATED)
#if !defined(CL_API_PREFIX__VERSION_2_2_DEPRECATED)
#define CL_API_PREFIX__VERSION_2_2_DEPRECATED
#endif // #if !defined(CL_API_PREFIX__VERSION_2_2_DEPRECATED)
#if !defined(CL_API_SUFFIX__VERSION_2_2_DEPRECATED)
#define CL_API_SUFFIX__VERSION_2_2_DEPRECATED
#endif // #if !defined(CL_API_SUFFIX__VERSION_2_2_DEPRECATED)
#if !defined(CL_CALLBACK)
#define CL_CALLBACK
#endif //CL_CALLBACK
#include <utility>
#include <limits>
#include <iterator>
#include <mutex>
#include <cstring>
#include <functional>
// Define a size_type to represent a correctly resolved size_t
#if defined(CL_HPP_ENABLE_SIZE_T_COMPATIBILITY)
namespace cl {
using size_type = ::size_t;
} // namespace cl
#else // #if defined(CL_HPP_ENABLE_SIZE_T_COMPATIBILITY)
namespace cl {
using size_type = size_t;
} // namespace cl
#endif // #if defined(CL_HPP_ENABLE_SIZE_T_COMPATIBILITY)
#if defined(CL_HPP_ENABLE_EXCEPTIONS)
#include <exception>
#endif // #if defined(CL_HPP_ENABLE_EXCEPTIONS)
#if !defined(CL_HPP_NO_STD_VECTOR)
#include <vector>
namespace cl {
template < class T, class Alloc = std::allocator<T> >
using vector = std::vector<T, Alloc>;
} // namespace cl
#endif // #if !defined(CL_HPP_NO_STD_VECTOR)
#if !defined(CL_HPP_NO_STD_STRING)
#include <string>
namespace cl {
using string = std::string;
} // namespace cl
#endif // #if !defined(CL_HPP_NO_STD_STRING)
#if CL_HPP_TARGET_OPENCL_VERSION >= 200
#if !defined(CL_HPP_NO_STD_UNIQUE_PTR)
#include <memory>
namespace cl {
// Replace unique_ptr and allocate_pointer for internal use
// to allow user to replace them
template<class T, class D>
using pointer = std::unique_ptr<T, D>;
} // namespace cl
#endif
#endif // #if CL_HPP_TARGET_OPENCL_VERSION >= 200
#if !defined(CL_HPP_NO_STD_ARRAY)
#include <array>
namespace cl {
template < class T, size_type N >
using array = std::array<T, N>;
} // namespace cl
#endif // #if !defined(CL_HPP_NO_STD_ARRAY)
// Define size_type appropriately to allow backward-compatibility
// use of the old size_t interface class
#if defined(CL_HPP_ENABLE_SIZE_T_COMPATIBILITY)
namespace cl {
namespace compatibility {
/*! \brief class used to interface between C++ and
* OpenCL C calls that require arrays of size_t values, whose
* size is known statically.
*/
template <int N>
class size_t
{
private:
size_type data_[N];
public:
//! \brief Initialize size_t to all 0s
size_t()
{
for (int i = 0; i < N; ++i) {
data_[i] = 0;
}
}
size_t(const array<size_type, N> &rhs)
{
for (int i = 0; i < N; ++i) {
data_[i] = rhs[i];
}
}
size_type& operator[](int index)
{
return data_[index];
}
const size_type& operator[](int index) const
{
return data_[index];
}
//! \brief Conversion operator to T*.
operator size_type* () { return data_; }
//! \brief Conversion operator to const T*.
operator const size_type* () const { return data_; }
operator array<size_type, N>() const
{
array<size_type, N> ret;
for (int i = 0; i < N; ++i) {
ret[i] = data_[i];
}
return ret;
}
};
} // namespace compatibility
template<int N>
using size_t = compatibility::size_t<N>;
} // namespace cl
#endif // #if defined(CL_HPP_ENABLE_SIZE_T_COMPATIBILITY)
// Helper alias to avoid confusing the macros
namespace cl {
namespace detail {
using size_t_array = array<size_type, 3>;
} // namespace detail
} // namespace cl
/*! \namespace cl
*
* \brief The OpenCL C++ bindings are defined within this namespace.
*
*/
namespace cl {
class Memory;
#define CL_HPP_INIT_CL_EXT_FCN_PTR_(name) \
if (!pfn_##name) { \
pfn_##name = (PFN_##name) \
clGetExtensionFunctionAddress(#name); \
if (!pfn_##name) { \
} \
}
#define CL_HPP_INIT_CL_EXT_FCN_PTR_PLATFORM_(platform, name) \
if (!pfn_##name) { \
pfn_##name = (PFN_##name) \
clGetExtensionFunctionAddressForPlatform(platform, #name); \
if (!pfn_##name) { \
} \
}
class Program;
class Device;
class Context;
class CommandQueue;
class DeviceCommandQueue;
class Memory;
class Buffer;
class Pipe;
#if defined(CL_HPP_ENABLE_EXCEPTIONS)
/*! \brief Exception class
*
* This may be thrown by API functions when CL_HPP_ENABLE_EXCEPTIONS is defined.
*/
class Error : public std::exception
{
private:
cl_int err_;
const char * errStr_;
public:
/*! \brief Create a new CL error exception for a given error code
* and corresponding message.
*
* \param err error code value.
*
* \param errStr a descriptive string that must remain in scope until
* handling of the exception has concluded. If set, it
* will be returned by what().
*/
Error(cl_int err, const char * errStr = NULL) : err_(err), errStr_(errStr)
{}
~Error() throw() {}
/*! \brief Get error string associated with exception
*
* \return A memory pointer to the error message string.
*/
virtual const char * what() const throw ()
{
if (errStr_ == NULL) {
return "empty";
}
else {
return errStr_;
}
}
/*! \brief Get error code associated with exception
*
* \return The error code.
*/
cl_int err(void) const { return err_; }
};
#define CL_HPP_ERR_STR_(x) #x
#else
#define CL_HPP_ERR_STR_(x) NULL
#endif // CL_HPP_ENABLE_EXCEPTIONS
namespace detail
{
#if defined(CL_HPP_ENABLE_EXCEPTIONS)
static inline cl_int errHandler (
cl_int err,
const char * errStr = NULL)
{
if (err != CL_SUCCESS) {
throw Error(err, errStr);
}
return err;
}
#else
static inline cl_int errHandler (cl_int err, const char * errStr = NULL)
{
(void) errStr; // suppress unused variable warning
return err;
}
#endif // CL_HPP_ENABLE_EXCEPTIONS
}
//! \cond DOXYGEN_DETAIL
#if !defined(CL_HPP_USER_OVERRIDE_ERROR_STRINGS)
#define __GET_DEVICE_INFO_ERR CL_HPP_ERR_STR_(clGetDeviceInfo)
#define __GET_PLATFORM_INFO_ERR CL_HPP_ERR_STR_(clGetPlatformInfo)
#define __GET_DEVICE_IDS_ERR CL_HPP_ERR_STR_(clGetDeviceIDs)
#define __GET_PLATFORM_IDS_ERR CL_HPP_ERR_STR_(clGetPlatformIDs)
#define __GET_CONTEXT_INFO_ERR CL_HPP_ERR_STR_(clGetContextInfo)
#define __GET_EVENT_INFO_ERR CL_HPP_ERR_STR_(clGetEventInfo)
#define __GET_EVENT_PROFILE_INFO_ERR CL_HPP_ERR_STR_(clGetEventProfileInfo)
#define __GET_MEM_OBJECT_INFO_ERR CL_HPP_ERR_STR_(clGetMemObjectInfo)
#define __GET_IMAGE_INFO_ERR CL_HPP_ERR_STR_(clGetImageInfo)
#define __GET_SAMPLER_INFO_ERR CL_HPP_ERR_STR_(clGetSamplerInfo)
#define __GET_KERNEL_INFO_ERR CL_HPP_ERR_STR_(clGetKernelInfo)
#if CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __GET_KERNEL_ARG_INFO_ERR CL_HPP_ERR_STR_(clGetKernelArgInfo)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 120
#if CL_HPP_TARGET_OPENCL_VERSION >= 200
#define __GET_KERNEL_SUB_GROUP_INFO_ERR CL_HPP_ERR_STR_(clGetKernelSubGroupInfo)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 200
#define __GET_KERNEL_WORK_GROUP_INFO_ERR CL_HPP_ERR_STR_(clGetKernelWorkGroupInfo)
#define __GET_PROGRAM_INFO_ERR CL_HPP_ERR_STR_(clGetProgramInfo)
#define __GET_PROGRAM_BUILD_INFO_ERR CL_HPP_ERR_STR_(clGetProgramBuildInfo)
#define __GET_COMMAND_QUEUE_INFO_ERR CL_HPP_ERR_STR_(clGetCommandQueueInfo)
#define __CREATE_CONTEXT_ERR CL_HPP_ERR_STR_(clCreateContext)
#define __CREATE_CONTEXT_FROM_TYPE_ERR CL_HPP_ERR_STR_(clCreateContextFromType)
#define __GET_SUPPORTED_IMAGE_FORMATS_ERR CL_HPP_ERR_STR_(clGetSupportedImageFormats)
#define __CREATE_BUFFER_ERR CL_HPP_ERR_STR_(clCreateBuffer)
#define __COPY_ERR CL_HPP_ERR_STR_(cl::copy)
#define __CREATE_SUBBUFFER_ERR CL_HPP_ERR_STR_(clCreateSubBuffer)
#define __CREATE_GL_BUFFER_ERR CL_HPP_ERR_STR_(clCreateFromGLBuffer)
#define __CREATE_GL_RENDER_BUFFER_ERR CL_HPP_ERR_STR_(clCreateFromGLBuffer)
#define __GET_GL_OBJECT_INFO_ERR CL_HPP_ERR_STR_(clGetGLObjectInfo)
#if CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __CREATE_IMAGE_ERR CL_HPP_ERR_STR_(clCreateImage)
#define __CREATE_GL_TEXTURE_ERR CL_HPP_ERR_STR_(clCreateFromGLTexture)
#define __IMAGE_DIMENSION_ERR CL_HPP_ERR_STR_(Incorrect image dimensions)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __SET_MEM_OBJECT_DESTRUCTOR_CALLBACK_ERR CL_HPP_ERR_STR_(clSetMemObjectDestructorCallback)
#define __CREATE_USER_EVENT_ERR CL_HPP_ERR_STR_(clCreateUserEvent)
#define __SET_USER_EVENT_STATUS_ERR CL_HPP_ERR_STR_(clSetUserEventStatus)
#define __SET_EVENT_CALLBACK_ERR CL_HPP_ERR_STR_(clSetEventCallback)
#define __WAIT_FOR_EVENTS_ERR CL_HPP_ERR_STR_(clWaitForEvents)
#define __CREATE_KERNEL_ERR CL_HPP_ERR_STR_(clCreateKernel)
#define __SET_KERNEL_ARGS_ERR CL_HPP_ERR_STR_(clSetKernelArg)
#define __CREATE_PROGRAM_WITH_SOURCE_ERR CL_HPP_ERR_STR_(clCreateProgramWithSource)
#if CL_HPP_TARGET_OPENCL_VERSION >= 200
#define __CREATE_PROGRAM_WITH_IL_ERR CL_HPP_ERR_STR_(clCreateProgramWithIL)
#endif // #if CL_HPP_TARGET_OPENCL_VERSION >= 200
#define __CREATE_PROGRAM_WITH_BINARY_ERR CL_HPP_ERR_STR_(clCreateProgramWithBinary)
#if CL_HPP_TARGET_OPENCL_VERSION >= 210
#define __CREATE_PROGRAM_WITH_IL_ERR CL_HPP_ERR_STR_(clCreateProgramWithIL)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 210
#if CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __CREATE_PROGRAM_WITH_BUILT_IN_KERNELS_ERR CL_HPP_ERR_STR_(clCreateProgramWithBuiltInKernels)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __BUILD_PROGRAM_ERR CL_HPP_ERR_STR_(clBuildProgram)
#if CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __COMPILE_PROGRAM_ERR CL_HPP_ERR_STR_(clCompileProgram)
#define __LINK_PROGRAM_ERR CL_HPP_ERR_STR_(clLinkProgram)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __CREATE_KERNELS_IN_PROGRAM_ERR CL_HPP_ERR_STR_(clCreateKernelsInProgram)
#if CL_HPP_TARGET_OPENCL_VERSION >= 200
#define __CREATE_COMMAND_QUEUE_WITH_PROPERTIES_ERR CL_HPP_ERR_STR_(clCreateCommandQueueWithProperties)
#define __CREATE_SAMPLER_WITH_PROPERTIES_ERR CL_HPP_ERR_STR_(clCreateSamplerWithProperties)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 200
#define __SET_COMMAND_QUEUE_PROPERTY_ERR CL_HPP_ERR_STR_(clSetCommandQueueProperty)
#define __ENQUEUE_READ_BUFFER_ERR CL_HPP_ERR_STR_(clEnqueueReadBuffer)
#define __ENQUEUE_READ_BUFFER_RECT_ERR CL_HPP_ERR_STR_(clEnqueueReadBufferRect)
#define __ENQUEUE_WRITE_BUFFER_ERR CL_HPP_ERR_STR_(clEnqueueWriteBuffer)
#define __ENQUEUE_WRITE_BUFFER_RECT_ERR CL_HPP_ERR_STR_(clEnqueueWriteBufferRect)
#define __ENQEUE_COPY_BUFFER_ERR CL_HPP_ERR_STR_(clEnqueueCopyBuffer)
#define __ENQEUE_COPY_BUFFER_RECT_ERR CL_HPP_ERR_STR_(clEnqueueCopyBufferRect)
#define __ENQUEUE_FILL_BUFFER_ERR CL_HPP_ERR_STR_(clEnqueueFillBuffer)
#define __ENQUEUE_READ_IMAGE_ERR CL_HPP_ERR_STR_(clEnqueueReadImage)
#define __ENQUEUE_WRITE_IMAGE_ERR CL_HPP_ERR_STR_(clEnqueueWriteImage)
#define __ENQUEUE_COPY_IMAGE_ERR CL_HPP_ERR_STR_(clEnqueueCopyImage)
#define __ENQUEUE_FILL_IMAGE_ERR CL_HPP_ERR_STR_(clEnqueueFillImage)
#define __ENQUEUE_COPY_IMAGE_TO_BUFFER_ERR CL_HPP_ERR_STR_(clEnqueueCopyImageToBuffer)
#define __ENQUEUE_COPY_BUFFER_TO_IMAGE_ERR CL_HPP_ERR_STR_(clEnqueueCopyBufferToImage)
#define __ENQUEUE_MAP_BUFFER_ERR CL_HPP_ERR_STR_(clEnqueueMapBuffer)
#define __ENQUEUE_MAP_IMAGE_ERR CL_HPP_ERR_STR_(clEnqueueMapImage)
#define __ENQUEUE_UNMAP_MEM_OBJECT_ERR CL_HPP_ERR_STR_(clEnqueueUnMapMemObject)
#define __ENQUEUE_NDRANGE_KERNEL_ERR CL_HPP_ERR_STR_(clEnqueueNDRangeKernel)
#define __ENQUEUE_NATIVE_KERNEL CL_HPP_ERR_STR_(clEnqueueNativeKernel)
#if CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __ENQUEUE_MIGRATE_MEM_OBJECTS_ERR CL_HPP_ERR_STR_(clEnqueueMigrateMemObjects)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 120
#if CL_HPP_TARGET_OPENCL_VERSION >= 210
#define __ENQUEUE_MIGRATE_SVM_ERR CL_HPP_ERR_STR_(clEnqueueSVMMigrateMem)
#define __SET_DEFAULT_DEVICE_COMMAND_QUEUE_ERR CL_HPP_ERR_STR_(clSetDefaultDeviceCommandQueue)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 210
#define __ENQUEUE_ACQUIRE_GL_ERR CL_HPP_ERR_STR_(clEnqueueAcquireGLObjects)
#define __ENQUEUE_RELEASE_GL_ERR CL_HPP_ERR_STR_(clEnqueueReleaseGLObjects)
#define __CREATE_PIPE_ERR CL_HPP_ERR_STR_(clCreatePipe)
#define __GET_PIPE_INFO_ERR CL_HPP_ERR_STR_(clGetPipeInfo)
#define __RETAIN_ERR CL_HPP_ERR_STR_(Retain Object)
#define __RELEASE_ERR CL_HPP_ERR_STR_(Release Object)
#define __FLUSH_ERR CL_HPP_ERR_STR_(clFlush)
#define __FINISH_ERR CL_HPP_ERR_STR_(clFinish)
#define __VECTOR_CAPACITY_ERR CL_HPP_ERR_STR_(Vector capacity error)
#if CL_HPP_TARGET_OPENCL_VERSION >= 210
#define __GET_HOST_TIMER_ERR CL_HPP_ERR_STR_(clGetHostTimer)
#define __GET_DEVICE_AND_HOST_TIMER_ERR CL_HPP_ERR_STR_(clGetDeviceAndHostTimer)
#endif
#if CL_HPP_TARGET_OPENCL_VERSION >= 220
#define __SET_PROGRAM_RELEASE_CALLBACK_ERR CL_HPP_ERR_STR_(clSetProgramReleaseCallback)
#define __SET_PROGRAM_SPECIALIZATION_CONSTANT_ERR CL_HPP_ERR_STR_(clSetProgramSpecializationConstant)
#endif
/**
* CL 1.2 version that uses device fission.
*/
#if CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __CREATE_SUB_DEVICES_ERR CL_HPP_ERR_STR_(clCreateSubDevices)
#else
#define __CREATE_SUB_DEVICES_ERR CL_HPP_ERR_STR_(clCreateSubDevicesEXT)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 120
/**
* Deprecated APIs for 1.2
*/
#if defined(CL_USE_DEPRECATED_OPENCL_1_1_APIS)
#define __ENQUEUE_MARKER_ERR CL_HPP_ERR_STR_(clEnqueueMarker)
#define __ENQUEUE_WAIT_FOR_EVENTS_ERR CL_HPP_ERR_STR_(clEnqueueWaitForEvents)
#define __ENQUEUE_BARRIER_ERR CL_HPP_ERR_STR_(clEnqueueBarrier)
#define __UNLOAD_COMPILER_ERR CL_HPP_ERR_STR_(clUnloadCompiler)
#define __CREATE_GL_TEXTURE_2D_ERR CL_HPP_ERR_STR_(clCreateFromGLTexture2D)
#define __CREATE_GL_TEXTURE_3D_ERR CL_HPP_ERR_STR_(clCreateFromGLTexture3D)
#define __CREATE_IMAGE2D_ERR CL_HPP_ERR_STR_(clCreateImage2D)
#define __CREATE_IMAGE3D_ERR CL_HPP_ERR_STR_(clCreateImage3D)
#endif // #if defined(CL_USE_DEPRECATED_OPENCL_1_1_APIS)
/**
* Deprecated APIs for 2.0
*/
#if defined(CL_USE_DEPRECATED_OPENCL_1_2_APIS)
#define __CREATE_COMMAND_QUEUE_ERR CL_HPP_ERR_STR_(clCreateCommandQueue)
#define __ENQUEUE_TASK_ERR CL_HPP_ERR_STR_(clEnqueueTask)
#define __CREATE_SAMPLER_ERR CL_HPP_ERR_STR_(clCreateSampler)
#endif // #if defined(CL_USE_DEPRECATED_OPENCL_1_1_APIS)
/**
* CL 1.2 marker and barrier commands
*/
#if CL_HPP_TARGET_OPENCL_VERSION >= 120
#define __ENQUEUE_MARKER_WAIT_LIST_ERR CL_HPP_ERR_STR_(clEnqueueMarkerWithWaitList)
#define __ENQUEUE_BARRIER_WAIT_LIST_ERR CL_HPP_ERR_STR_(clEnqueueBarrierWithWaitList)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 120
#if CL_HPP_TARGET_OPENCL_VERSION >= 210
#define __CLONE_KERNEL_ERR CL_HPP_ERR_STR_(clCloneKernel)
#endif // CL_HPP_TARGET_OPENCL_VERSION >= 210
#endif // CL_HPP_USER_OVERRIDE_ERROR_STRINGS
//! \endcond
namespace detail {
// Generic getInfoHelper. The final parameter is used to guide overload
// resolution: the actual parameter passed is an int, which makes this
// a worse conversion sequence than a specialization that declares the
// parameter as an int.
template<typename Functor, typename T>
inline cl_int getInfoHelper(Functor f, cl_uint name, T* param, long)
{
return f(name, sizeof(T), param, NULL);