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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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44
samples/wasm-c-api/src/multi.c
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@ -9,18 +9,18 @@
// A function to be called from Wasm code.
own wasm_trap_t* callback(
const wasm_val_t args[], wasm_val_t results[]
const wasm_val_vec_t *args, wasm_val_vec_t *results
) {
printf("Calling back...\n> ");
printf("> %"PRIu32" %"PRIu64" %"PRIu64" %"PRIu32"\n",
args[0].of.i32, args[1].of.i64,
args[2].of.i64, args[3].of.i32);
args->data[0].of.i32, args->data[1].of.i64,
args->data[2].of.i64, args->data[3].of.i32);
printf("\n");
wasm_val_copy(&results[0], &args[3]);
wasm_val_copy(&results[1], &args[1]);
wasm_val_copy(&results[2], &args[2]);
wasm_val_copy(&results[3], &args[0]);
wasm_val_copy(&results->data[0], &args->data[3]);
wasm_val_copy(&results->data[1], &args->data[1]);
wasm_val_copy(&results->data[2], &args->data[2]);
wasm_val_copy(&results->data[3], &args->data[0]);
return NULL;
}
@ -91,9 +91,10 @@ int main(int argc, const char* argv[]) {
// Instantiate.
printf("Instantiating module...\n");
const wasm_extern_t* imports[] = { wasm_func_as_extern(callback_func) };
wasm_extern_vec_t imports;
wasm_extern_vec_new(&imports, 1, (wasm_extern_t *[]) { wasm_func_as_extern(callback_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;
@ -120,13 +121,14 @@ int main(int argc, const char* argv[]) {
// Call.
printf("Calling export...\n");
wasm_val_t args[4] = {
WASM_I32_VAL(1), WASM_I64_VAL(2), WASM_I64_VAL(3), WASM_I32_VAL(4)
};
wasm_val_t results[4] = {
WASM_INIT_VAL, WASM_INIT_VAL, WASM_INIT_VAL, WASM_INIT_VAL
};
if (wasm_func_call(run_func, args, results)) {
wasm_val_vec_t args, results;
wasm_val_vec_new(&args, 4, (wasm_val_t []){
WASM_I32_VAL(1), WASM_I64_VAL(2), WASM_I64_VAL(3), WASM_I32_VAL(4)
});
wasm_val_vec_new(&results, 4, (wasm_val_t []) {
WASM_INIT_VAL, WASM_INIT_VAL, WASM_INIT_VAL, WASM_INIT_VAL
});
if (wasm_func_call(run_func, &args, &results)) {
printf("> Error calling function!\n");
return 1;
}
@ -136,12 +138,12 @@ int main(int argc, const char* argv[]) {
// Print result.
printf("Printing result...\n");
printf("> %"PRIu32" %"PRIu64" %"PRIu64" %"PRIu32"\n",
results[0].of.i32, results[1].of.i64, results[2].of.i64, results[3].of.i32);
results.data[0].of.i32, results.data[1].of.i64, results.data[2].of.i64, results.data[3].of.i32);
assert(results[0].of.i32 == 1);
assert(results[1].of.i64 == 2);
assert(results[2].of.i64 == 3);
assert(results[3].of.i32 == 4);
assert(results.data[0].of.i32 == 1);
assert(results.data[1].of.i64 == 2);
assert(results.data[2].of.i64 == 3);
assert(results.data[3].of.i32 == 4);
// Shut down.
printf("Shutting down...\n");