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ecaa982b9f
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7593 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
//---------------------------------------------------------------------------//
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// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#ifndef BOOST_COMPUTE_SVM_HPP
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#define BOOST_COMPUTE_SVM_HPP
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#include <boost/compute/config.hpp>
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#include <boost/compute/context.hpp>
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#include <boost/compute/memory/svm_ptr.hpp>
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// svm functions require OpenCL 2.0
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#if defined(CL_VERSION_2_0) || defined(BOOST_COMPUTE_DOXYGEN_INVOKED)
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namespace boost {
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namespace compute {
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/// Allocates a shared virtual memory (SVM) buffer.
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//
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/// \opencl_version_warning{2,0}
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///
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/// \see_opencl2_ref{clSVMAlloc}
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///
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/// \see svm_free()
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template<class T>
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inline svm_ptr<T> svm_alloc(const context &context,
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size_t size,
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cl_svm_mem_flags flags = CL_MEM_READ_WRITE,
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unsigned int alignment = 0)
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{
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svm_ptr<T> ptr(
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clSVMAlloc(context.get(), flags, size * sizeof(T), alignment),
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context
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);
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if(!ptr.get()){
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BOOST_THROW_EXCEPTION(opencl_error(CL_MEM_OBJECT_ALLOCATION_FAILURE));
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}
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return ptr;
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}
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/// Deallocates a shared virtual memory (SVM) buffer.
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///
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/// \opencl_version_warning{2,0}
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///
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/// \see_opencl2_ref{clSVMFree}
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///
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/// \see svm_alloc(), command_queue::enqueue_svm_free()
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template<class T>
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inline void svm_free(svm_ptr<T> ptr)
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{
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clSVMFree(ptr.get_context(), ptr.get());
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}
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/// \overload
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template<class T>
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inline void svm_free(const context &context, svm_ptr<T> ptr)
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{
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clSVMFree(context.get(), ptr.get());
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}
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} // end compute namespace
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} // end boost namespace
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#endif // CL_VERSION_2_0
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#endif // BOOST_COMPUTE_PIPE_HPP
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