Function run

example/memory.cc:66–167

void run() {
  // Initialize.
  std::cout << "Initializing..." << std::endl;
  auto engine = wasm::Engine::make();
  auto store_ = wasm::Store::make(engine.get());
  auto store = store_.get();

  // Load binary.
  std::cout << "Loading binary..." << std::endl;
  std::ifstream file("memory.wasm");
  file.seekg(0, std::ios_base::end);
  auto file_size = file.tellg();
  file.seekg(0);
  auto binary = wasm::vec<byte_t>::make_uninitialized(file_size);
  file.read(binary.get(), file_size);
  file.close();
  if (file.fail()) {
    std::cout << "> Error loading module!" << std::endl;
    exit(1);
  }

  // Compile.
  std::cout << "Compiling module..." << std::endl;
  auto module = wasm::Module::make(store, binary);
  if (!module) {
    std::cout << "> Error compiling module!" << std::endl;
    exit(1);
  }

  // Instantiate.
  std::cout << "Instantiating module..." << std::endl;
  auto imports = wasm::vec<wasm::Extern*>::make();
  auto instance = wasm::Instance::make(store, module.get(), imports);
  if (!instance) {
    std::cout << "> Error instantiating module!" << std::endl;
    exit(1);
  }

  // Extract export.
  std::cout << "Extracting exports..." << std::endl;
  auto exports = instance->exports();
  size_t i = 0;
  auto memory = get_export_memory(exports, i++);
  auto size_func = get_export_func(exports, i++);
  auto load_func = get_export_func(exports, i++);
  auto store_func = get_export_func(exports, i++);

  // Try cloning.
  assert(memory->copy()->same(memory));

  // Check initial memory.
  std::cout << "Checking memory..." << std::endl;
  check(memory->size(), 2u);
  check(memory->data_size(), 0x20000u);
  check(memory->data()[0], 0);
  check(memory->data()[0x1000], 1);
  check(memory->data()[0x1003], 4);