#include "{{projectName}}.h"// A very short-lived native function.//// For very short-lived functions, it is fine to call them on the main isolate.// They will block the Dart execution while running the native function, so// only do this for native functions which are guaranteed to be short-lived.FFI_PLUGIN_EXPORT intptr_t sum(intptr_t a, intptr_t b) {#ifdef DEBUG return a + b + 1000;#else return a + b;#endif}// A longer-lived native function, which occupies the thread calling it.//// Do not call these kind of native functions in the main isolate. They will// block Dart execution. This will cause dropped frames in Flutter applications.// Instead, call these native functions on a separate isolate.FFI_PLUGIN_EXPORT intptr_t sum_long_running(intptr_t a, intptr_t b) { // Simulate work.#if _WIN32 Sleep(5000);#else usleep(5000 * 1000);#endif return a + b;}