Function main

examples/wasip1/main.c:38–110

                            wasm_trap_t *trap);

int main() {
  // Set up our context
  wasm_engine_t *engine = wasm_engine_new();
  assert(engine != NULL);
  wasmtime_store_t *store = wasmtime_store_new(engine, NULL, NULL);
  assert(store != NULL);
  wasmtime_context_t *context = wasmtime_store_context(store);

  // Create a linker with WASI functions defined
  wasmtime_linker_t *linker = wasmtime_linker_new(engine);
  wasmtime_error_t *error = wasmtime_linker_define_wasi(linker);
  if (error != NULL)
    exit_with_error("failed to link wasi", error, NULL);

  wasm_byte_vec_t wasm;
  // Load our input file to parse it next
  FILE *file = fopen("target/wasm32-wasip1/debug/wasi.wasm", "rb");
  if (!file) {
    printf("> Error loading file!\n");
    exit(1);
  }
  fseek(file, 0L, SEEK_END);
  size_t file_size = ftell(file);
  wasm_byte_vec_new_uninitialized(&wasm, file_size);
  fseek(file, 0L, SEEK_SET);
  if (fread(wasm.data, file_size, 1, file) != 1) {
    printf("> Error loading module!\n");
    exit(1);
  }
  fclose(file);

  // Compile our modules
  wasmtime_module_t *module = NULL;
  error = wasmtime_module_new(engine, (uint8_t *)wasm.data, wasm.size, &module);
  if (!module)
    exit_with_error("failed to compile module", error, NULL);
  wasm_byte_vec_delete(&wasm);

  // Instantiate wasi
  wasi_config_t *wasi_config = wasi_config_new();
  assert(wasi_config);
  wasi_config_inherit_argv(wasi_config);
  wasi_config_inherit_env(wasi_config);
  wasi_config_inherit_stdin(wasi_config);
  wasi_config_inherit_stdout(wasi_config);
  wasi_config_inherit_stderr(wasi_config);
  wasm_trap_t *trap = NULL;
  error = wasmtime_context_set_wasi(context, wasi_config);
  if (error != NULL)
    exit_with_error("failed to instantiate WASI", error, NULL);

  // Instantiate the module
  error = wasmtime_linker_module(linker, context, "", 0, module);
  if (error != NULL)
    exit_with_error("failed to instantiate module", error, NULL);

  // Run it.
  wasmtime_func_t func;