45 using handle = std::unique_ptr<T, deleter<T, fn>>;
47 void exit_with_error(std::string msg, wasmtime_error_t *err,  in exit_with_error()
49   std::cerr << "error: " << msg << std::endl;  in exit_with_error()
56   std::cerr << std::string(error_message.data, error_message.size) << std::endl;  in exit_with_error()
58   std::exit(1);  in exit_with_error()
90                              const std::string &filename) {  in compile_wat_module_from_file()
91   std::ifstream t(filename);  in compile_wat_module_from_file()
92   std::stringstream buffer;  in compile_wat_module_from_file()
95     std::cerr << "error reading file: " << filename << std::endl;  in compile_wat_module_from_file()
96     std::exit(1);  in compile_wat_module_from_file()
98   const std::string &content = buffer.str();  in compile_wat_module_from_file()
127            _print_finished_future.wait_for(std::chrono::seconds(0)) !=  in print_is_pending()
128                std::future_status::ready;  in print_is_pending()
135   std::promise<int32_t> _value_to_print;
136   std::promise<void> _print_finished;
137   std::future<void> _print_finished_future;
147   std::cout << "polling async host function result" << std::endl;  in poll_print_finished_state()
155   } catch (const std::exception &ex) {  in poll_print_finished_state()
156     std::string msg = ex.what();  in poll_print_finished_state()
165   std::thread printer_thread([]() {  in main()
167     std::cout << "received value to print!" << std::endl;  in main()
168     std::this_thread::sleep_for(std::chrono::milliseconds(500));  in main()
169     std::cout << "printing: " << value_to_print << std::endl;  in main()
170     std::this_thread::sleep_for(std::chrono::milliseconds(500));  in main()
171     std::cout << "signaling that value is printed" << std::endl;  in main()
189   static std::string host_module_name = "host";  in main()
190   static std::string host_func_name = "print";  in main()
207         std::cout << "invoking async host function" << std::endl;  in main()
213           std::cout << "deleting async_call_env" << std::endl;  in main()
231     std::cout << "yielding instantiation!" << std::endl;  in main()
244   static std::string guest_func_name = "print_fibonacci";  in main()
253   std::array<wasmtime_val_t, 1> args;  in main()
256   std::array<wasmtime_val_t, 0> results;  in main()
266       std::cout << "waiting for async host function to complete" << std::endl;  in main()
268       std::cout << "async host function completed" << std::endl;  in main()
272     std::cout << "yield!" << std::endl;  in main()
284   std::cout << "async function call complete!" << std::endl;  in main()