#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#if _WIN32

#include <windows.h>

#else

#include <pthread.h>

#include <unistd.h>

#endif

#if _WIN32

#define FFI_PLUGIN_EXPORT __declspec(dllexport)

#else

#define FFI_PLUGIN_EXPORT

#endif

// 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);

// 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);