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/usr/include/boost/compute

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algorithm/	-	0755	rm
allocator/	-	0755	rm
async/	-	0755	rm
container/	-	0755	rm
detail/	-	0755	rm
exception/	-	0755	rm
experimental/	-	0755	rm
functional/	-	0755	rm
image/	-	0755	rm
interop/	-	0755	rm
iterator/	-	0755	rm
lambda/	-	0755	rm
memory/	-	0755	rm
random/	-	0755	rm
types/	-	0755	rm
type_traits/	-	0755	rm
utility/	-	0755	rm
algorithm.hpp	4399	0644	edit dl rm
allocator.hpp	748	0644	edit dl rm
async.hpp	703	0644	edit dl rm
buffer.hpp	6783	0644	edit dl rm
cl.hpp	1625	0644	edit dl rm
closure.hpp	10111	0644	edit dl rm
cl_ext.hpp	664	0644	edit dl rm
command_queue.hpp	62500	0644	edit dl rm
config.hpp	2359	0644	edit dl rm
container.hpp	1021	0644	edit dl rm
context.hpp	6594	0644	edit dl rm
core.hpp	1141	0644	edit dl rm
device.hpp	21203	0644	edit dl rm
event.hpp	10280	0644	edit dl rm
exception.hpp	858	0644	edit dl rm
function.hpp	12138	0644	edit dl rm
functional.hpp	1343	0644	edit dl rm
image.hpp	894	0644	edit dl rm
image2d.hpp	549	0644	edit dl rm
image3d.hpp	549	0644	edit dl rm
image_format.hpp	559	0644	edit dl rm
image_sampler.hpp	561	0644	edit dl rm
iterator.hpp	1140	0644	edit dl rm
kernel.hpp	17580	0644	edit dl rm
lambda.hpp	862	0644	edit dl rm
memory.hpp	717	0644	edit dl rm
memory_object.hpp	6994	0644	edit dl rm
pipe.hpp	4008	0644	edit dl rm
platform.hpp	7420	0644	edit dl rm
program.hpp	25342	0644	edit dl rm
random.hpp	1148	0644	edit dl rm
source.hpp	551	0644	edit dl rm
svm.hpp	1969	0644	edit dl rm
system.hpp	9388	0644	edit dl rm
types.hpp	870	0644	edit dl rm
type_traits.hpp	1106	0644	edit dl rm
user_event.hpp	2414	0644	edit dl rm
utility.hpp	823	0644	edit dl rm
version.hpp	665	0644	edit dl rm
wait_list.hpp	557	0644	edit dl rm

Edit: /usr/include/boost/compute/buffer.hpp (6783B)

//---------------------------------------------------------------------------//
// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
//
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
// See http://boostorg.github.com/compute for more information.
//---------------------------------------------------------------------------//

#ifndef BOOST_COMPUTE_BUFFER_HPP
#define BOOST_COMPUTE_BUFFER_HPP

#include <boost/compute/config.hpp>
#include <boost/compute/context.hpp>
#include <boost/compute/exception.hpp>
#include <boost/compute/memory_object.hpp>
#include <boost/compute/detail/get_object_info.hpp>

namespace boost {
namespace compute {

// forward declarations
class command_queue;

/// \class buffer
/// \brief A memory buffer on a compute device.
///
/// The buffer class represents a memory buffer on a compute device.
///
/// Buffers are allocated within a compute context. For example, to allocate
/// a memory buffer for 32 float's:
///
/// \snippet test/test_buffer.cpp constructor
///
/// Once created, data can be copied to and from the buffer using the
/// \c enqueue_*_buffer() methods in the command_queue class. For example, to
/// copy a set of \c int values from the host to the device:
/// \code
/// int data[] = { 1, 2, 3, 4 };
///
/// queue.enqueue_write_buffer(buf, 0, 4 * sizeof(int), data);
/// \endcode
///
/// Also see the copy() algorithm for a higher-level interface to copying data
/// between the host and the device. For a higher-level, dynamically-resizable,
/// type-safe container for data on a compute device, use the vector<T> class.
///
/// Buffer objects have reference semantics. Creating a copy of a buffer
/// object simply creates another reference to the underlying OpenCL memory
/// object. To create an actual copy use the buffer::clone() method.
///
/// \see context, command_queue
class buffer : public memory_object
{
public:
    /// Creates a null buffer object.
    buffer()
        : memory_object()
    {
    }

/// Creates a buffer object for \p mem. If \p retain is \c true, the
    /// reference count for \p mem will be incremented.
    explicit buffer(cl_mem mem, bool retain = true)
        : memory_object(mem, retain)
    {
    }

/// Create a new memory buffer in of \p size with \p flags in
    /// \p context.
    ///
    /// \see_opencl_ref{clCreateBuffer}
    buffer(const context &context,
           size_t size,
           cl_mem_flags flags = read_write,
           void *host_ptr = 0)
    {
        cl_int error = 0;
        m_mem = clCreateBuffer(context,
                               flags,
                               (std::max)(size, size_t(1)),
                               host_ptr,
                               &error);
        if(!m_mem){
            BOOST_THROW_EXCEPTION(opencl_error(error));
        }
    }

/// Creates a new buffer object as a copy of \p other.
    buffer(const buffer &other)
        : memory_object(other)
    {
    }

/// Copies the buffer object from \p other to \c *this.
    buffer& operator=(const buffer &other)
    {
        if(this != &other){
            memory_object::operator=(other);
        }

return *this;
    }

#ifndef BOOST_COMPUTE_NO_RVALUE_REFERENCES
    /// Move-constructs a new buffer object from \p other.
    buffer(buffer&& other) BOOST_NOEXCEPT
        : memory_object(std::move(other))
    {
    }

/// Move-assigns the buffer from \p other to \c *this.
    buffer& operator=(buffer&& other) BOOST_NOEXCEPT
    {
        memory_object::operator=(std::move(other));

return *this;
    }
    #endif // BOOST_COMPUTE_NO_RVALUE_REFERENCES

/// Destroys the buffer object.
    ~buffer()
    {
    }

/// Returns the size of the buffer in bytes.
    size_t size() const
    {
        return get_memory_size();
    }

/// \internal_
    size_t max_size() const
    {
        return get_context().get_device().max_memory_alloc_size();
    }

/// Returns information about the buffer.
    ///
    /// \see_opencl_ref{clGetMemObjectInfo}
    template<class T>
    T get_info(cl_mem_info info) const
    {
        return get_memory_info<T>(info);
    }

/// \overload
    template<int Enum>
    typename detail::get_object_info_type<buffer, Enum>::type
    get_info() const;

/// Creates a new buffer with a copy of the data in \c *this. Uses
    /// \p queue to perform the copy.
    buffer clone(command_queue &queue) const;

#if defined(BOOST_COMPUTE_CL_VERSION_1_1) || defined(BOOST_COMPUTE_DOXYGEN_INVOKED)
    /// Creates a new buffer out of this buffer.
    /// The new buffer is a sub region of this buffer.
    /// \p flags The mem_flags which should be used to create the new buffer
    /// \p origin The start index in this buffer
    /// \p size The size of the new sub buffer
    ///
    /// \see_opencl_ref{clCreateSubBuffer}
    ///
    /// \opencl_version_warning{1,1}
    buffer create_subbuffer(cl_mem_flags flags, size_t origin,
                            size_t size)
    {
        BOOST_ASSERT(origin + size <= this->size());
        BOOST_ASSERT(origin % (get_context().
                               get_device().
                               get_info<CL_DEVICE_MEM_BASE_ADDR_ALIGN>() / 8) == 0);
        cl_int error = 0;

cl_buffer_region region = { origin, size };

cl_mem mem = clCreateSubBuffer(m_mem,
                                       flags,
                                       CL_BUFFER_CREATE_TYPE_REGION,
                                       &region,
                                       &error);

if(!mem){
            BOOST_THROW_EXCEPTION(opencl_error(error));
        }

return buffer(mem, false);
    }
  #endif // BOOST_COMPUTE_CL_VERSION_1_1
};

/// \internal_ define get_info() specializations for buffer
BOOST_COMPUTE_DETAIL_DEFINE_GET_INFO_SPECIALIZATIONS(buffer,
    ((cl_mem_object_type, CL_MEM_TYPE))
    ((cl_mem_flags, CL_MEM_FLAGS))
    ((size_t, CL_MEM_SIZE))
    ((void *, CL_MEM_HOST_PTR))
    ((cl_uint, CL_MEM_MAP_COUNT))
    ((cl_uint, CL_MEM_REFERENCE_COUNT))
    ((cl_context, CL_MEM_CONTEXT))
)

#ifdef BOOST_COMPUTE_CL_VERSION_1_1
BOOST_COMPUTE_DETAIL_DEFINE_GET_INFO_SPECIALIZATIONS(buffer,
    ((cl_mem, CL_MEM_ASSOCIATED_MEMOBJECT))
    ((size_t, CL_MEM_OFFSET))
)
#endif // BOOST_COMPUTE_CL_VERSION_1_1

namespace detail {

// set_kernel_arg specialization for buffer
template<>
struct set_kernel_arg<buffer>
{
    void operator()(kernel &kernel_, size_t index, const buffer &buffer_)
    {
        kernel_.set_arg(index, buffer_.get());
    }
};

} // end detail namespace
} // end compute namespace
} // end boost namespace

#endif // BOOST_COMPUTE_BUFFER_HPP

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