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206 lines (175 loc) · 6.59 KB
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#include <stdlib.h>
#include <uv.h>
#include <node_api.h>
#include "../../js-native-api/common.h"
typedef struct {
napi_ref js_cb_ref;
napi_ref js_tsfn_finalizer_ref;
napi_threadsafe_function tsfn;
uv_thread_t thread;
} AddonData;
static void AsyncWorkCbExecute(napi_env env, void* data) {
(void) env;
(void) data;
}
static void call_cb_and_delete_ref(napi_env env, napi_ref* optional_ref) {
napi_value js_cb, undefined;
if (optional_ref == NULL) {
AddonData* data;
NODE_API_CALL_RETURN_VOID(env, napi_get_instance_data(env, (void**)&data));
optional_ref = &data->js_cb_ref;
}
NODE_API_CALL_RETURN_VOID(env,
napi_get_reference_value(env, *optional_ref, &js_cb));
NODE_API_CALL_RETURN_VOID(env, napi_get_undefined(env, &undefined));
NODE_API_CALL_RETURN_VOID(env,
napi_call_function(env, undefined, js_cb, 0, NULL, NULL));
NODE_API_CALL_RETURN_VOID(env, napi_delete_reference(env, *optional_ref));
*optional_ref = NULL;
}
static void AsyncWorkCbComplete(napi_env env,
napi_status status,
void* data) {
(void) status;
(void) data;
call_cb_and_delete_ref(env, NULL);
}
static bool establish_callback_ref(napi_env env, napi_callback_info info) {
AddonData* data;
size_t argc = 1;
napi_value js_cb;
NODE_API_CALL_BASE(env, napi_get_instance_data(env, (void**)&data), false);
NODE_API_ASSERT_BASE(
env, data->js_cb_ref == NULL, "reference must be NULL", false);
NODE_API_CALL_BASE(
env, napi_get_cb_info(env, info, &argc, &js_cb, NULL, NULL), false);
NODE_API_CALL_BASE(
env, napi_create_reference(env, js_cb, 1, &data->js_cb_ref), false);
return true;
}
static napi_value AsyncWorkCallback(napi_env env, napi_callback_info info) {
if (establish_callback_ref(env, info)) {
napi_value resource_name;
napi_async_work work;
NODE_API_CALL(env,
napi_create_string_utf8(
env, "AsyncIncrement", NAPI_AUTO_LENGTH, &resource_name));
NODE_API_CALL(env,
napi_create_async_work(
env, NULL, resource_name, AsyncWorkCbExecute, AsyncWorkCbComplete,
NULL, &work));
NODE_API_CALL(env, napi_queue_async_work(env, work));
}
return NULL;
}
static void TestBufferFinalizerCallback(napi_env env, void* data, void* hint) {
(void) data;
(void) hint;
call_cb_and_delete_ref(env, NULL);
}
static napi_value TestBufferFinalizer(napi_env env, napi_callback_info info) {
napi_value buffer = NULL;
if (establish_callback_ref(env, info)) {
NODE_API_CALL(env,
napi_create_external_buffer(
env, sizeof(napi_callback), TestBufferFinalizer,
TestBufferFinalizerCallback, NULL, &buffer));
}
return buffer;
}
static void ThreadsafeFunctionCallJS(napi_env env,
napi_value tsfn_cb,
void* context,
void* data) {
(void) tsfn_cb;
(void) context;
(void) data;
call_cb_and_delete_ref(env, NULL);
}
static void ThreadsafeFunctionTestThread(void* raw_data) {
AddonData* data = raw_data;
napi_status status;
// No need to call `napi_acquire_threadsafe_function()` because the main
// thread has set the refcount to 1 and there is only this one secondary
// thread.
status = napi_call_threadsafe_function(data->tsfn,
ThreadsafeFunctionCallJS,
napi_tsfn_nonblocking);
if (status != napi_ok) {
napi_fatal_error("ThreadSafeFunctionTestThread",
NAPI_AUTO_LENGTH,
"Failed to call TSFN",
NAPI_AUTO_LENGTH);
}
status = napi_release_threadsafe_function(data->tsfn, napi_tsfn_release);
if (status != napi_ok) {
napi_fatal_error("ThreadSafeFunctionTestThread",
NAPI_AUTO_LENGTH,
"Failed to release TSFN",
NAPI_AUTO_LENGTH);
}
}
static void FinalizeThreadsafeFunction(napi_env env, void* raw, void* hint) {
AddonData* data;
NODE_API_CALL_RETURN_VOID(env, napi_get_instance_data(env, (void**)&data));
NODE_API_ASSERT_RETURN_VOID(env,
uv_thread_join(&data->thread) == 0, "Failed to join the thread");
call_cb_and_delete_ref(env, &data->js_tsfn_finalizer_ref);
data->tsfn = NULL;
}
// This function accepts two arguments: the JS callback, and the finalize
// callback. The latter moves the test forward.
static napi_value
TestThreadsafeFunction(napi_env env, napi_callback_info info) {
AddonData* data;
size_t argc = 2;
napi_value argv[2], resource_name;
NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, argv, NULL, NULL));
NODE_API_CALL(env, napi_get_instance_data(env, (void**)&data));
NODE_API_ASSERT(env, data->js_cb_ref == NULL, "reference must be NULL");
NODE_API_ASSERT(
env, data->js_tsfn_finalizer_ref == NULL,
"tsfn finalizer reference must be NULL");
NODE_API_CALL(env, napi_create_reference(env, argv[0], 1, &data->js_cb_ref));
NODE_API_CALL(env,
napi_create_reference(env, argv[1], 1, &data->js_tsfn_finalizer_ref));
NODE_API_CALL(env,
napi_create_string_utf8(
env, "TSFN instance data test", NAPI_AUTO_LENGTH, &resource_name));
NODE_API_CALL(env,
napi_create_threadsafe_function(
env, NULL, NULL, resource_name, 0, 1, NULL,
FinalizeThreadsafeFunction, NULL, ThreadsafeFunctionCallJS,
&data->tsfn));
NODE_API_ASSERT(env,
uv_thread_create(&data->thread, ThreadsafeFunctionTestThread, data) == 0,
"uv_thread_create failed");
return NULL;
}
static void DeleteAddonData(napi_env env, void* raw_data, void* hint) {
AddonData* data = raw_data;
if (data->js_cb_ref) {
NODE_API_CALL_RETURN_VOID(env, napi_delete_reference(env, data->js_cb_ref));
}
if (data->js_tsfn_finalizer_ref) {
NODE_API_CALL_RETURN_VOID(env,
napi_delete_reference(env, data->js_tsfn_finalizer_ref));
}
free(data);
}
static napi_value Init(napi_env env, napi_value exports) {
AddonData* data = malloc(sizeof(*data));
data->js_cb_ref = NULL;
data->js_tsfn_finalizer_ref = NULL;
NODE_API_CALL(env, napi_set_instance_data(env, data, DeleteAddonData, NULL));
napi_property_descriptor props[] = {
DECLARE_NODE_API_PROPERTY("asyncWorkCallback", AsyncWorkCallback),
DECLARE_NODE_API_PROPERTY("testBufferFinalizer", TestBufferFinalizer),
DECLARE_NODE_API_PROPERTY("testThreadsafeFunction", TestThreadsafeFunction),
};
NODE_API_CALL(env,
napi_define_properties(
env, exports, sizeof(props) / sizeof(*props), props));
return exports;
}
NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)