Method AFSymbolManager

src/api/unified/symbol_manager.cpp:188–221

}

AFSymbolManager::AFSymbolManager()
    : defaultHandle(nullptr)
    , numBackends(0)
    , backendsAvailable(0)
    , logger(loggerFactory("unified")) {
    // In order of priority.
    static const af_backend order[] = {AF_BACKEND_CUDA, AF_BACKEND_ONEAPI,
                                       AF_BACKEND_OPENCL, AF_BACKEND_CPU};
    LibHandle handle                = nullptr;
    af::Backend backend             = AF_BACKEND_DEFAULT;
    // Decremeting loop. The last successful backend loaded will be the most
    // prefered one.
    for (int i = NUM_BACKENDS - 1; i >= 0; i--) {
        int bknd_idx          = backend_index(order[i]);
        bkndHandles[bknd_idx] = openDynLibrary(order[i]);
        if (bkndHandles[bknd_idx]) {
            handle  = bkndHandles[bknd_idx];
            backend = order[i];
            numBackends++;
            backendsAvailable += order[i];
        }
    }
    if (backend) {
        AF_TRACE("AF_DEFAULT_BACKEND: {}", getBackendDirectoryName(backend));
        defaultBackend = backend;
    } else {
        logger->error("Backend was not found");
        defaultBackend = AF_BACKEND_DEFAULT;
    }

    // Keep a copy of default order handle inorder to use it in ::setBackend
    // when the user passes AF_BACKEND_DEFAULT
    defaultHandle = handle;
}

AFSymbolManager::~AFSymbolManager() {
    for (auto& bkndHandle : bkndHandles) {