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Remove an improper assumption when creating wasm_trap (#1657)

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Allow to have multiple stores in an engine and multiple instances
in a store. Letting a wasm_function_t pass its wasm_store_t to make
it more efficient.
This commit is contained in:
liang.he 2022-11-01 11:56:28 +08:00 committed by GitHub
parent 101ea0ea3c
commit a1f7832625
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 37 additions and 68 deletions
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103
core/iwasm/common/wasm_c_api.c
View File

@ -1637,11 +1637,11 @@ wasm_frame_func_offset(const wasm_frame_t *frame)
}
static wasm_trap_t *
wasm_trap_new_internal(WASMModuleInstanceCommon *inst_comm_rt,
const char *default_error_info)
wasm_trap_new_internal(wasm_store_t *store,
WASMModuleInstanceCommon *inst_comm_rt,
const char *error_info)
{
wasm_trap_t *trap;
const char *error_info = NULL;
wasm_instance_vec_t *instances;
wasm_instance_t *frame_instance = NULL;
uint32 i;
@ -1651,72 +1651,44 @@ wasm_trap_new_internal(WASMModuleInstanceCommon *inst_comm_rt,
return NULL;
}
#if WASM_ENABLE_INTERP != 0
if (inst_comm_rt->module_type == Wasm_Module_Bytecode) {
error_info = wasm_get_exception((WASMModuleInstance *)inst_comm_rt);
}
#endif
#if WASM_ENABLE_AOT != 0
if (inst_comm_rt->module_type == Wasm_Module_AoT) {
error_info = aot_get_exception((AOTModuleInstance *)inst_comm_rt);
}
#endif
/*
* a wrong combination of module filetype and compilation flags
* also leads to below branch
*/
if (!error_info && !(error_info = default_error_info)) {
return NULL;
}
if (!(trap = malloc_internal(sizeof(wasm_trap_t)))) {
return NULL;
}
if (!(trap->message = malloc_internal(sizeof(wasm_byte_vec_t)))) {
goto failed;
}
/* fill in message */
if (strlen(error_info) > 0) {
if (!(trap->message = malloc_internal(sizeof(wasm_byte_vec_t)))) {
goto failed;
}
wasm_name_new_from_string_nt(trap->message, error_info);
if (strlen(error_info) && !trap->message->data) {
goto failed;
}
#if WASM_ENABLE_DUMP_CALL_STACK != 0
#if WASM_ENABLE_INTERP != 0
if (inst_comm_rt->module_type == Wasm_Module_Bytecode) {
trap->frames = ((WASMModuleInstance *)inst_comm_rt)->frames;
}
#endif
#if WASM_ENABLE_AOT != 0
if (inst_comm_rt->module_type == Wasm_Module_AoT) {
trap->frames = ((AOTModuleInstance *)inst_comm_rt)->frames;
}
#endif
#endif /* WASM_ENABLE_DUMP_CALL_STACK != 0 */
/* allow a NULL frames list */
if (!trap->frames) {
return trap;
}
if (!(instances = singleton_engine->stores->data[0]->instances)) {
goto failed;
}
for (i = 0; i < instances->num_elems; i++) {
if (instances->data[i]->inst_comm_rt == inst_comm_rt) {
frame_instance = instances->data[i];
break;
wasm_name_new_from_string_nt(trap->message, error_info);
if (!trap->message->data) {
goto failed;
}
}
for (i = 0; i < trap->frames->num_elems; i++) {
(((wasm_frame_t *)trap->frames->data) + i)->instance = frame_instance;
/* fill in frames */
#if WASM_ENABLE_DUMP_CALL_STACK != 0
trap->frames = ((WASMModuleInstance *)inst_comm_rt)->frames;
if (trap->frames) {
/* fill in instances */
instances = store->instances;
bh_assert(instances != NULL);
for (i = 0; i < instances->num_elems; i++) {
if (instances->data[i]->inst_comm_rt == inst_comm_rt) {
frame_instance = instances->data[i];
break;
}
}
for (i = 0; i < trap->frames->num_elems; i++) {
(((wasm_frame_t *)trap->frames->data) + i)->instance =
frame_instance;
}
}
#endif /* WASM_ENABLE_DUMP_CALL_STACK != 0 */
return trap;
failed:
@ -2929,14 +2901,9 @@ failed:
if (argv != argv_buf)
wasm_runtime_free(argv);
/* trap -> exception -> trap */
if (wasm_runtime_get_exception(func->inst_comm_rt)) {
return wasm_trap_new_internal(func->inst_comm_rt, NULL);
}
else {
return wasm_trap_new_internal(func->inst_comm_rt,
"wasm_func_call failed");
}
return wasm_trap_new_internal(
func->store, func->inst_comm_rt,
wasm_runtime_get_exception(func->inst_comm_rt));
}
size_t

2
samples/wasm-c-api/src/trap.c
View File

@ -143,6 +143,8 @@ int main(int argc, const char* argv[]) {
own wasm_name_t message;
wasm_trap_message(trap, &message);
printf("> %s\n", message.data);
assert(message.num_elems > 0);
assert(strncmp(message.data, "Exception: ", strlen("Exception: ")) == 0);
printf("Printing origin...\n");
own wasm_frame_t* frame = wasm_trap_origin(trap);