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Update wasm_c_api to use vector types (#751)

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The WASM C API now requires the use of vector types in certain apis.
Switching WAMR to use the new call signatures improves "drop in"
compilation compatibility between WAMR and other implementations
from a C-api embedding program's perspective.

* wasm_func_callback_t type has been updated to use wasm_val_vec_t
* wasm_func_callback_with_env_t type has been updated to use wasm_val_vec_t
* wasm_func_call() has been updated to use wasm_val_vec_t
* wasm_instance_new() has been updated to use wasm_extern_vec_t*
* wasm_instance_new_with_args() has been updated to use wasm_extern_vec_t*
* wasm_runtime_invoke_c_api_native() has been updated to support vector types
  in native callbacks without modifying the contract with the interpreter code.
* All users of the modified functions (including samples/wasm-c-api/src/*.c)
  have been appropriately updated.
This commit is contained in:
Saju Pillai
2021-09-15 23:54:25 -07:00
committed by GitHub
parent ed32693fc8
commit 76d641c7ea
13 changed files with 186 additions and 128 deletions
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13
samples/wasm-c-api/src/trap.c
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@ -9,7 +9,7 @@
// A function to be called from Wasm code.
own wasm_trap_t* fail_callback(
void* env, const wasm_val_t args[], wasm_val_t results[]
void* env, const wasm_val_vec_t* args, wasm_val_vec_t* results
) {
printf("Calling back...\n");
own wasm_name_t message;
@ -80,9 +80,10 @@ int main(int argc, const char* argv[]) {
// Instantiate.
printf("Instantiating module...\n");
const wasm_extern_t* imports[] = { wasm_func_as_extern(fail_func) };
wasm_extern_vec_t imports;
wasm_extern_vec_new(&imports, 1, (wasm_extern_t* []) { wasm_func_as_extern(fail_func) });
own wasm_instance_t* instance =
wasm_instance_new(store, module, imports, NULL);
wasm_instance_new(store, module, &imports, NULL);
if (!instance) {
printf("> Error instantiating module!\n");
return 1;
@ -111,8 +112,10 @@ int main(int argc, const char* argv[]) {
}
printf("Calling export %d...\n", i);
wasm_val_t results[1]; \
own wasm_trap_t* trap = wasm_func_call(func, NULL, results);
wasm_val_vec_t results;
wasm_val_vec_new_uninitialized(&results, 1);
own wasm_trap_t* trap = wasm_func_call(func, NULL, &results);
if (!trap) {
printf("> Error calling function, expected trap!\n");
return 1;