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 <cstdio>
17 #include <ctime>
18 #include <fcntl.h>
19 #include <js_native_api.h>
20 #include <js_native_api_types.h>
21 #include <node_api.h>
22 #include <semaphore.h>
23 #include <unistd.h>
24
25 #define MPARAM_1 (-1)
26 #define PARAM_1 1
27 #define PARAM_0 0
28 #define PARAM_0777 0777
29
SemUnlink(napi_env env, napi_callback_info info)30 static napi_value SemUnlink(napi_env env, napi_callback_info info)
31 {
32 char buf[100];
33 struct timespec ts;
34 int ret = MPARAM_1;
35 sem_t *psem = SEM_FAILED;
36 do {
37 clock_gettime(CLOCK_REALTIME, &ts);
38 snprintf(buf, sizeof(buf), "/testsem-%d-%d", static_cast<int>(getpid()), static_cast<int>(ts.tv_nsec));
39 psem = sem_open(buf, O_CREAT, PARAM_0777, PARAM_1);
40 if (psem == SEM_FAILED) {
41 break;
42 }
43 ret = sem_close(psem);
44 if (ret == MPARAM_1) {
45 break;
46 }
47 ret = sem_unlink(buf);
48 } while (PARAM_0);
49 napi_value result = nullptr;
50 napi_create_int32(env, ret, &result);
51 return result;
52 }
53
54 EXTERN_C_START
Init(napi_env env, napi_value exports)55 static napi_value Init(napi_env env, napi_value exports)
56 {
57 napi_property_descriptor desc[] = {
58 {"sem_unlink", nullptr, SemUnlink, nullptr, nullptr, nullptr, napi_default, nullptr},
59 };
60 napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
61 return exports;
62 }
63
64 EXTERN_C_END
65
66 static napi_module demoModule = {
67 .nm_version = 1,
68 .nm_flags = 0,
69 .nm_filename = nullptr,
70 .nm_register_func = Init,
71 .nm_modname = "semaphore1",
72 .nm_priv = ((void *)0),
73 .reserved = {0},
74 };
75
RegisterEntryModule(void)76 extern "C" __attribute__((constructor)) void RegisterEntryModule(void) { napi_module_register(&demoModule); }
77