Function opencl_is_available

src/core/CL/OpenCL.cpp:236–257

}

bool opencl_is_available()
{
    CLSymbols::get().load_default();

    // Using static objects that rely on OpenCL in their constructor or
    // destructor is implementation defined according to the OpenCL API
    // Specification. These objects include CLScheduler.
    //
    // For compatibility with OpenCL runtimes that also use static objects to
    // hold their state, we call a harmless OpenCL function (clGetPlatformIDs
    // with invalid parameters must result in CL_INVALID_VALUE) to ensure the
    // runtimes have a chance to initialize their static objects first. Thanks
    // to C++11 rules about normal program completion (cf [basic.start]), this
    // ensures their static objects are destroyed last, i.e. after the
    // singleton CLScheduler is destroyed.
    //
    // When OpenCL is not available, this call results in CL_OUT_OF_RESOURCES,
    // which is equally harmless.
    (void)clGetPlatformIDs(0, nullptr, nullptr);

    return CLSymbols::get().clBuildProgram_ptr != nullptr;
}
} // namespace arm_compute

cl_int clEnqueueMarker(cl_command_queue command_queue, cl_event *event)