This folder contains a legacy pointer interface utility header, that facilitates integrating SYCL applications into codebases that rely on malloc/free allocations on the device.

The utility header offers an interface to simluate the traditional C behaviour of malloc a pointer on the device and free it later.

The malloc returns a non-dereferenciable pointer that can be used later in SYCL code to retrieve the buffer it refers to, plus an offset into it.

Include the legacy_pointer.hpp file in your program, and replace your device malloc/free operations with codeplay::legacy::malloc/free

To retrieve the buffer from the pointer, just use the function codeplay::legacy::PointerMapper::get_buffer_id to obtain the buffer id from the PointerMapper class, and then the method codeplay::legacy::PointerMapper::get_buffer to obtain the SYCL buffer.

mkdir build && cd build # in SDK root
cmake .. -DComputeCpp_DIR=/path/to/computecpp -DCOMPUTECPP_SDK_BUILD_TESTS=ON
make legacy-basic legacy-offset