1 #include <stdlib.h>
2 #include "node_api.h"
3 #include "uv.h"
4 #include "../../js-native-api/common.h"
5
RunInCallbackScope(napi_env env,napi_callback_info info)6 static napi_value RunInCallbackScope(napi_env env, napi_callback_info info) {
7 size_t argc;
8 napi_value args[3];
9
10 NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, NULL, NULL, NULL));
11 NODE_API_ASSERT(env, argc == 3 , "Wrong number of arguments");
12
13 NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
14
15 napi_valuetype valuetype;
16 NODE_API_CALL(env, napi_typeof(env, args[0], &valuetype));
17 NODE_API_ASSERT(env, valuetype == napi_object,
18 "Wrong type of arguments. Expects an object as first argument.");
19
20 NODE_API_CALL(env, napi_typeof(env, args[1], &valuetype));
21 NODE_API_ASSERT(env, valuetype == napi_string,
22 "Wrong type of arguments. Expects a string as second argument.");
23
24 NODE_API_CALL(env, napi_typeof(env, args[2], &valuetype));
25 NODE_API_ASSERT(env, valuetype == napi_function,
26 "Wrong type of arguments. Expects a function as third argument.");
27
28 napi_async_context context;
29 NODE_API_CALL(env, napi_async_init(env, args[0], args[1], &context));
30
31 napi_callback_scope scope = NULL;
32 NODE_API_CALL(env,
33 napi_open_callback_scope(env, args[0], context, &scope));
34
35 // If the function has an exception pending after the call that is ok
36 // so we don't use NODE_API_CALL as we must close the callback scope
37 // regardless.
38 napi_value result = NULL;
39 napi_status function_call_result =
40 napi_call_function(env, args[0], args[2], 0, NULL, &result);
41 if (function_call_result != napi_ok) {
42 GET_AND_THROW_LAST_ERROR((env));
43 }
44
45 NODE_API_CALL(env, napi_close_callback_scope(env, scope));
46 NODE_API_CALL(env, napi_async_destroy(env, context));
47
48 return result;
49 }
50
51 static napi_env shared_env = NULL;
52 static napi_deferred deferred = NULL;
53
Callback(uv_work_t * req,int ignored)54 static void Callback(uv_work_t* req, int ignored) {
55 napi_env env = shared_env;
56
57 napi_handle_scope handle_scope = NULL;
58 NODE_API_CALL_RETURN_VOID(env, napi_open_handle_scope(env, &handle_scope));
59
60 napi_value resource_name;
61 NODE_API_CALL_RETURN_VOID(env, napi_create_string_utf8(
62 env, "test", NAPI_AUTO_LENGTH, &resource_name));
63 napi_async_context context;
64 NODE_API_CALL_RETURN_VOID(env,
65 napi_async_init(env, NULL, resource_name, &context));
66
67 napi_value resource_object;
68 NODE_API_CALL_RETURN_VOID(env, napi_create_object(env, &resource_object));
69
70 napi_value undefined_value;
71 NODE_API_CALL_RETURN_VOID(env, napi_get_undefined(env, &undefined_value));
72
73 napi_callback_scope scope = NULL;
74 NODE_API_CALL_RETURN_VOID(env,
75 napi_open_callback_scope(env, resource_object, context, &scope));
76
77 NODE_API_CALL_RETURN_VOID(env,
78 napi_resolve_deferred(env, deferred, undefined_value));
79
80 NODE_API_CALL_RETURN_VOID(env, napi_close_callback_scope(env, scope));
81
82 NODE_API_CALL_RETURN_VOID(env, napi_close_handle_scope(env, handle_scope));
83 NODE_API_CALL_RETURN_VOID(env, napi_async_destroy(env, context));
84 free(req);
85 }
86
NoopWork(uv_work_t * work)87 static void NoopWork(uv_work_t* work) { (void) work; }
88
TestResolveAsync(napi_env env,napi_callback_info info)89 static napi_value TestResolveAsync(napi_env env, napi_callback_info info) {
90 napi_value promise = NULL;
91 if (deferred == NULL) {
92 shared_env = env;
93 NODE_API_CALL(env, napi_create_promise(env, &deferred, &promise));
94
95 uv_loop_t* loop = NULL;
96 NODE_API_CALL(env, napi_get_uv_event_loop(env, &loop));
97
98 uv_work_t* req = malloc(sizeof(*req));
99 uv_queue_work(loop,
100 req,
101 NoopWork,
102 Callback);
103 }
104 return promise;
105 }
106
Init(napi_env env,napi_value exports)107 static napi_value Init(napi_env env, napi_value exports) {
108 napi_property_descriptor descriptors[] = {
109 DECLARE_NODE_API_PROPERTY("runInCallbackScope", RunInCallbackScope),
110 DECLARE_NODE_API_PROPERTY("testResolveAsync", TestResolveAsync)
111 };
112
113 NODE_API_CALL(env, napi_define_properties(
114 env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
115
116 return exports;
117 }
118
119 NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)
120