/// <summary> /// Creates a new memory buffer with the specified flags and of the specified size. /// </summary> /// <param name="memoryFlags">The flags, that determines the how the memory buffer is created and how it can be accessed.</param> /// <param name="size">The size of memory that should be allocated for the memory buffer.</param> /// <exception cref="OpenClException">If the memory buffer could not be created, then an <see cref="OpenClException"/> is thrown.</exception> /// <returns>Returns the created memory buffer.</returns> public MemoryBuffer CreateBuffer(Memory.MemoryFlag memoryFlags, int size, object handleIdentifier) { // Creates a new memory buffer of the specified size and with the specified memory flags IntPtr memoryBufferPointer = MemoryNativeApi.CreateBuffer(Handle, (Interop.Memory.MemoryFlag)memoryFlags, new UIntPtr((uint)size), IntPtr.Zero, out Result result); // Checks if the creation of the memory buffer was successful, if not, then an exception is thrown if (result != Result.Success) { throw new OpenClException("The memory buffer could not be created.", result); } // Creates the memory buffer from the pointer to the memory buffer and returns it return(new MemoryBuffer(memoryBufferPointer, handleIdentifier)); }
/// <summary> /// Creates a new memory buffer with the specified flags and of the specified size. /// </summary> /// <param name="memoryFlags">The flags, that determines the how the memory buffer is created and how it can be accessed.</param> /// <param name="size">The size of memory that should be allocated for the memory buffer.</param> /// <exception cref="OpenClException">If the memory buffer could not be created, then an <see cref="OpenClException"/> is thrown.</exception> /// <returns>Returns the created memory buffer.</returns> public MemoryBuffer CreateBuffer(OpenCl.DotNetCore.Memory.MemoryFlag memoryFlags, long size) { // Creates a new memory buffer of the specified size and with the specified memory flags Result result; IntPtr memoryBufferPointer = MemoryNativeApi.CreateBuffer(this.Handle, (Interop.Memory.MemoryFlag)memoryFlags, new UIntPtr((ulong)size), IntPtr.Zero, out result); // Checks if the creation of the memory buffer was successful, if not, then an exception is thrown if (result != Result.Success) { throw new OpenClException("The memory buffer could not be created.", result); } // Creates the memory buffer from the pointer to the memory buffer and returns it return(new MemoryBuffer(memoryBufferPointer)); }
public MemoryAllocation CreateMemoryAllocation(IntPtr clContext, uint byteSize, MemoryFlag flags, IntPtr data) { Result err; var buffer = MemoryNativeApi.CreateBuffer(clContext, flags, new UIntPtr(byteSize), data, out err); if (err != Result.Success) { OnLowDeviceMemory(); buffer = MemoryNativeApi.CreateBuffer(clContext, flags, new UIntPtr(byteSize), data, out err); if (err != Result.Success) { ThrowOnError(err, String.Format("Failed to allocate device memory. Size: {0}", byteSize)); } } return(new MemoryAllocation(buffer, byteSize, flags)); }
public MemoryBuffer CreateBuffer(MemoryFlag memoryFlags, Type t, object[] value, object handleIdentifier) { // Tries to create the memory buffer, if anything goes wrong, then it is crucial to free the allocated memory IntPtr hostBufferPointer = IntPtr.Zero; try { // Determines the size of the specified value and creates a pointer that points to the data inside the structure int size = Marshal.SizeOf(t) * value.Length; hostBufferPointer = Marshal.AllocHGlobal(size); for (int i = 0; i < value.Length; i++) { Marshal.StructureToPtr(value[i], IntPtr.Add(hostBufferPointer, i * Marshal.SizeOf(t)), false); } // Creates a new memory buffer for the specified value IntPtr memoryBufferPointer = MemoryNativeApi.CreateBuffer( Handle, (Interop.Memory.MemoryFlag)memoryFlags, new UIntPtr(( uint )size), hostBufferPointer, out Result result ); // Checks if the creation of the memory buffer was successful, if not, then an exception is thrown if (result != Result.Success) { throw new OpenClException("The memory buffer could not be created.", result); } // Creates the memory buffer from the pointer to the memory buffer and returns it return(new MemoryBuffer(memoryBufferPointer, handleIdentifier)); } finally { // Deallocates the host memory allocated for the value if (hostBufferPointer != IntPtr.Zero) { Marshal.FreeHGlobal(hostBufferPointer); } } }