1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "napi/native_api.h"
17 #include <csetjmp>
18 #include <cstdio>
19 #include <cstdlib>
20 #include <js_native_api.h>
21 #include <node_api.h>
22
23 #define PARAM_0 0
24 #define PARAM_1 1
25 #define PARAM_2 2
26 #define PARAM_UNNORMAL (-1)
27 #define ERRON_0 0
28 #define ONEVAL 1
29 #define MINUSONE (-1)
30
31 static int count = PARAM_0;
Longjmp(napi_env env, napi_callback_info info)32 static napi_value Longjmp(napi_env env, napi_callback_info info)
33 {
34 jmp_buf jmp;
35 count = PARAM_0;
36 int ret = setjmp(jmp);
37 if (count == PARAM_0) {
38 count = PARAM_1;
39 longjmp(jmp, PARAM_1);
40 }
41 count = PARAM_0;
42 napi_value result = nullptr;
43 if (ret == PARAM_0) {
44 napi_create_int32(env, PARAM_UNNORMAL, &result);
45 } else {
46 napi_create_int32(env, PARAM_0, &result);
47 }
48 return result;
49 }
50
_Longjmp(napi_env env, napi_callback_info info)51 static napi_value _Longjmp(napi_env env, napi_callback_info info)
52 {
53 jmp_buf jmp;
54 count = PARAM_0;
55 int ret = _setjmp(jmp);
56 if (count == PARAM_0) {
57 count = PARAM_1;
58 _longjmp(jmp, PARAM_1);
59 }
60 count = PARAM_0;
61 napi_value result = nullptr;
62 if (ret == PARAM_0) {
63 napi_create_int32(env, PARAM_UNNORMAL, &result);
64 } else {
65 napi_create_int32(env, PARAM_0, &result);
66 }
67 return result;
68 }
69
_Setjmp(napi_env env, napi_callback_info info)70 static napi_value _Setjmp(napi_env env, napi_callback_info info)
71 {
72 napi_value result = nullptr;
73 jmp_buf jmp;
74 count = PARAM_0;
75 int ret = _setjmp(jmp);
76 if (count == PARAM_0 && ret != PARAM_0) {
77 count = PARAM_0;
78 napi_create_int32(env, PARAM_UNNORMAL, &result);
79 return result;
80 }
81 if (count == PARAM_1 && ret == PARAM_0) {
82 count = PARAM_0;
83 napi_create_int32(env, PARAM_UNNORMAL, &result);
84 return result;
85 }
86 if (count == PARAM_0) {
87 count = PARAM_1;
88 _longjmp(jmp, PARAM_1);
89 }
90 count = PARAM_0;
91 if (ret == PARAM_0) {
92 napi_create_int32(env, PARAM_UNNORMAL, &result);
93 } else {
94 napi_create_int32(env, PARAM_0, &result);
95 }
96 return result;
97 }
98
99 EXTERN_C_START
Init(napi_env env, napi_value exports)100 static napi_value Init(napi_env env, napi_value exports)
101 {
102 napi_property_descriptor desc[] = {
103 {"longjmp", nullptr, Longjmp, nullptr, nullptr, nullptr, napi_default, nullptr},
104 {"_longjmp", nullptr, _Longjmp, nullptr, nullptr, nullptr, napi_default, nullptr},
105 {"_setjmp", nullptr, _Setjmp, nullptr, nullptr, nullptr, napi_default, nullptr},
106 };
107 napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
108 return exports;
109 }
110 EXTERN_C_END
111
112 static napi_module demoModule = {
113 .nm_version = 1,
114 .nm_flags = 0,
115 .nm_filename = "setjmpndk1",
116 .nm_register_func = Init,
117 .nm_modname = "setjmpndk1",
118 .nm_priv = ((void *)0),
119 .reserved = {0},
120 };
121
RegisterEntryModule(void)122 extern "C" __attribute__((constructor)) void RegisterEntryModule(void) { napi_module_register(&demoModule); }
123